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MetrikAnalogueIndicatingMeters
Manual Metrik
Analogue Indicating Meters Publication Reference: mtrka/EN/M/C
mtrka/EN/M/C2011.ALSTOM,theALSTOMlogoandanyalternativeversionthereofaretrademarksandservicemarksofALSTOM.Theothernamesmentioned,registeredornot,arethepropertyoftheirrespectivecompanies.Thetechnicalandotherdatacontainedinthisdocumentisprovidedforinformationonly.NeitherALSTOM, itsofficersoremployeesacceptresponsibilityfor,orshouldbetakenasmakinganyrepresentationorwarranty(whetherexpressorimplied),astotheaccuracyorcompletenessofsuchdataortheachievementofanyprojectedperformancecriteriawheretheseareindicated.ALSTOMreservestherighttoreviseorchangethisdataatanytimewithoutfurthernotice.
GRID
Service Manual MTRKA/EN M/C
METRIK
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HANDLING OF ELECTRONIC EQUIPMENT
A persons normal movements can easily generate electrostatic potentials of several thousand volts. Discharge of these voltages into semiconductor devices when handling circuits can cause serious damage, which often may not be immediately apparent but the reliability of the circuit will have been reduced.
The electronic circuits of Alstom Grid products are immune to the relevant levels of electrostatic discharge when housed in their cases. Do not expose them to the risk of damage by withdrawing modules unnecessarily.
Each module incorporates the highest practicable protection for its semiconductor devices. However, if it becomes necessary to withdraw a module, the following precautions should be taken to preserve the high reliability and long life for which the equipment has been designed and manufactured.
1. Before removing a module, ensure that you are a same electrostatic potential as the equipment by touching the case.
2. Handle the module by its front-plate, frame, or edges of the printed circuit board. Avoid touching the electronic components, printed circuit track or connectors.
3. Do not pass the module to any person without first ensuring that you are both at the same electrostatic potential. Shaking hands achieves equipotential.
4. Place the module on an anti-static surface, or on a conducting surface that is at the same potential as you.
5. Store or transport the module in a conductive bag.
More information on safe working procedures for all electronic equipment can be found in BS5783 and IEC 60147-0F.
If you are making measurements on the internal electronic circuitry of equipment in service, it is preferable that you are earthed to the case with a conductive wrist strap.
Wrist straps should have a resistance to ground between 500k 10M ohms. If a wrist strap is not available you should maintain regular contact with the case to prevent the build up of static. Instrumentation which may be used for making measurements should be earthed to the case whenever possible.
Alstom Grid strongly recommends that detailed investigations on the electronic circuitry, or modification work, should be carried out in a Special Handling Area such as described in BS5783 or IEC 60147-0F.
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METRIK
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1. SAFETY SECTION This Safety Section should be read before commencing any work on the equipment.
1.1 Health and Safety
The information in the Safety Section of the product documentation is intended to ensure that products are properly installed and handled in order to maintain them in a safe condition. It is assumed that everyone who will be associated with the equipment will be familiar with the contents of the Safety Section.
1.2 Explanation of symbols and labels
The meaning of symbols and labels may be used on the equipment or in the product documentation, is given below.
Caution: refer to product documentation Caution: risk of electric shock
Protective/safety *earth terminal Functional *earth terminal
NOTE: This symbol may also be used for a protective/safety earth terminal if that terminal is part of a terminal block or sub-assembly e.g. power supply.
*NOTE: THE TERM EARTH USED THROUGHOUT THE PRODUCT DOCUMENTATION IS THE DIRECT EQUIVALENT OF THE NORTH AMERICAN TERM GROUND.
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METRIK
2. INSTALLING, COMMISSIONING AND SERVICING
Equipment connections
Personnel undertaking installation, commissioning or servicing work on this equipment should be aware of the correct working procedures to ensure safety. The product documentation should be consulted before installing, commissioning or servicing the equipment.
Terminals exposed during installation, commissioning and maintenance may present a hazardous voltage unless the equipment is electrically isolated.
If there is unlocked access to the rear of the equipment, care should be taken by all personnel to avoid electrical shock or energy hazards.
Voltage and current connections should be made using insulated crimp terminations to ensure that terminal block insulation requirements are maintained for safety. To ensure that wires are correctly terminated the correct crimp terminal and tool for the wire size should be used.
Before energising the equipment it must be earthed using the protective earth terminal, or the appropriate termination of the supply plug in the case of plug connected equipment. Omitting or disconnecting the equipment earth may cause a safety hazard.
The recommended minimum earth wire size is 2.5mm2, unless otherwise stated in the technical data section of the product documentation.
Before energising the equipment, the following should be checked:
Voltage rating and polarity; CT circuit rating and integrity of connections; Protective fuse rating; Integrity of earth connection (where applicable)
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3. EQUIPMENT OPERATING CONDITIONS The equipment should be operated within the specified electrical and environmental limits.
3.1 Current transformer circuits
Do not open the secondary circuit of a live CT since the high level voltage produced may be lethal to personnel and could damage insulation.
3.2 External resistors
Where external resistors are fitted to relays, these may present a risk of electric shock or burns, if touched.
3.3 Battery Replacement
Where internal batteries are fitted they should be replaced with the recommended type and be installed with the correct polarity, to avoid possible damage to the equipment.
3.4 Insulation and dielectric strength testing
Insulation testing may leave capacitors charged up to a hazardous voltage. At the end of each part of the test, the voltage should be gradually reduced to zero, to discharge capacitors, before the test leads are disconnected.
3.5 Insertion of modules and pcb cards
These must not be inserted into or withdrawn from equipment whist it is energised since this may result in damage.
3.6 Fibre optic communication
Where fibre optic communication devices are fitted, these should not be viewed directly. Optical power meters should be used to determine the operation or signal level of the device.
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METRIK
4. OLDER PRODUCTS Electrical adjustments
Equipments that require direct physical adjustments to their operating mechanism to change current or voltage settings should have the electrical power removed before making the change, to avoid any risk of electrical shock.
Mechanical adjustments
The electrical power to the relay contacts should be removed before checking any mechanical settings, to avoid any risk of electric shock.
Draw out case relays
Removal of the cover on equipment incorporating electromechanical operating elements, may expose hazardous live parts such as relay contacts.
Insertion and withdrawal of extender cards
When using an extender card, this should not be inserted or withdrawn from the equipment whilst it is energised. This is to avoid possible shock or damage hazards. Hazardous live voltages may be accessible on the extender card.
Insertion and withdrawal of heavy current test plugs
When using a heavy current test plug, CT shorting links must be in place before insertion or removal, to avoid potentially lethal voltages.
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5. DECOMMISSIONING AND DISPOSAL
Decommissioning: The auxiliary supply circuit in the relay may include capacitors across the supply or to earth. To avoid electric shock or energy hazards, after completely isolating the supplies to the relay (both poles of any dc supply), the capacitors should be safely discharged via the external terminals prior to decommissioning.
Disposal: It is recommended that incineration and disposal to water courses is avoided. The product should be disposed of in a safe manner. Any products containing batteries should have them removed before disposal, taking precautions to avoid short circuits. Particular regulations within the country of operation, may apply to the disposal of lithium batteries.
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METRIK
6. TECHNICAL SPECIFICATIONS 6.1 Protective fuse rating
The recommended maximum rating of the external protective fuse for this equipment is 16A, Red Spot type or equivalent, unless otherwise stated in the technical data section of the product documentation.
Insulation class: IEC 61010-1 : 2002 Class II EN 61010-1 : 2002 Class II
Insulation Category (Over voltage):
IEC 61010-1 : 2002 Category III EN 61010-1 : 2002 Category III
Environment: IEC 61010-1 : 2002 Pollution degree 2
EN 61010-1 : 2002 Pollution degree 2
Compliance is demonstrated by reference to generic safety standards.
Product Safety:
73/23/EEC & 2006/95/EC
EN 61010-1 : 2002
Compliance with the European Commission Low Voltage Directive.
Compliance is demonstrated by reference to generic safety standards.
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CONTENT
1. SAFETY SECTION 3
1.1 Health and Safety 3 1.2 Explanation of symbols and labels 3
2. INSTALLING, COMMISSIONING AND SERVICING 4
3. EQUIPMENT OPERATING CONDITIONS 5
3.1 Current transformer circuits 5 3.2 External resistors 5 3.3 Battery Replacement 5 3.4 Insulation and dielectric strength testing 5 3.5 Insertion of modules and pcb cards 5 3.6 Fibre optic communication 5
4. OLDER PRODUCTS 6
5. DECOMMISSIONING AND DISPOSAL 7
6. TECHNICAL SPECIFICATIONS 8
6.1 Protective fuse rating 8
7. INTRODUCTION 13
8. TECHNICAL INFORMATION 15
8.1 METRIK A (AMMETERS) 15 8.1.1 Moving Iron 15 8.1.2 Moving Coil 16 8.1.3 Rectified Moving Coil 16 8.2 METRIK C (METER RELAYS) 16 8.3 METRIK D (DIFFERENTIAL METER) 17 8.3.1 Differential instruments 17 8.3.2 Dual value instruments 18 8.4 METRIK F (FREQUENCY METERS) 19 8.4.1 Pointer instruments 19 8.4.2 Reed instruments 20 8.5 METRIK M (MAXIMUM DEMAND AMMETERS) 21 8.5.1 Maximum demand ammeters 21 8.6 METRIK P (POWER FACTOR METERS) 22 8.7 METRIK PSI (PHASE SEQUENCE INDICATORS) 23 8.8 METRIK R (VARMETERS) 24 8.9 METRIK S (SYNCHRONISING METER) 25
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METRIK
8.9.1 Electronic meters 25 8.9.2 Electro-mechanical meters 26 8.10 METRIK T (TIME ELAPSE/HOURS RUN) 26 8.11 METRIK V (VOLTMETERS) 27 8.11.1 Moving Iron 28 8.11.2 Moving Coil 28 8.11.3 Rectified Moving Coil 28 8.12 METRIK W (WATTMETERS) 28
9. INSTRUMENT NOMENCLATURE 30
9.1 METRIK A ammeters 30 9.2 METRIK C meter relays 30 9.3 METRIK D Differential Instruments 31 9.4 METRIK F frequency meters 31 9.5 METRIK M maximum demand meter 32 9.6 METRIK P Phase Angle meters 32 9.7 METRIK PSI Phase Sequence Indication 33 9.8 METRIK R Varmeters 33 9.9 METRIK S Synchronising Instruments 34 9.10 METRIK T time elapse/hours run 34 9.11 METRIK V Voltmeters 35 9.12 METRIK W Wattmeters 36
10. WIRING DIAGRAMS 37
10.1 ST/SM SYNCHRONISING METERS 37 10.2 SL SYNCHRONISING METERS 38 10.3 P, R AND W POWER METERS 39
11. INSTRUMENTATION ACCESSORY 40
11.1 TA SERIES MOULDED CASE CURRENT TRANSFORMERS 40 11.1.1 Introduction 40 11.1.2 CT selection tables 41 11.1.3 Technical details 42 11.2 TC SERIES NARROW WIDTH CURRENT TRANSFORMERS 43 11.2.1 Introduction 43 11.2.2 CT selection tables 43 11.3 TYPE 17* CURRENT TRANSFORMERS 45
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11.3.1 Introduction to type 173 45 11.3.2 Features 45 11.3.3 Technical specification 45 11.3.4 Range 45 11.3.5 Outline dimensions 45 11.3.6 Introduction to type 174 46 11.3.7 Features 46 11.3.8 Technical specification 46 11.3.9 Range 46 11.3.10 Outline dimensions 46 11.4 RT SPLIT CORE CURRENT TRANSFORMERS 47 11.4.1 Introduction to type RT 47 11.4.2 Features 47 11.4.3 Technical specification 47 11.4.4 Range and dimensions 47 11.4.5 Outline drawing 48 11.5 RT RING CORE CURRENT TRANSFORMERS 48 11.5.1 Introduction to type RT 48 11.5.2 Features 48 11.5.3 Technical specification 48 11.5.4 Measurement 49 11.5.5 Protection 49 11.5.6 Dimensions 50 11.6 DC SHUNTS 51 11.6.1 Introduction 51 11.6.2 Accuracy 51 11.6.3 Range 51 11.6.4 Outline drawings 51 11.6.5 Dimensions 52 11.7 PHASE SELECTOR SWITCH 53 11.7.1 Introduction 53 11.7.2 Types 53 11.7.3 Accessories 53 11.7.4 Features 53 11.7.5 Technical details 53 11.7.6 Standards 53 11.7.7 Ordering information 54 11.7.8 Outline and dimensions 54 11.7.9 Switch drawings 55
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METRIK
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7. INTRODUCTION The METRIK range of analogue indicating instruments cover a number of measurement, monitoring and metering functions for comprehensive power system information. The use of analogue technology achieves high accuracy over a wide dynamic measuring range for instantaneous and integrated power system parameters. METRIK provides a host of measurement, monitoring and metering facilities as detailed below:
METRIK A (Ammeters) AC moving iron measurement DC moving coil measurement AC rectified moving coil measurement Short (90) and long scale (240) display of readings
METRIK C (Indicating meter with an output contact) AC moving iron measurement DC moving coil measurement Voltage and current measurement Alarm contact Short (90) scale display of readings
METRIK D (Differential meters) DV differential voltmeters DF Differential frequency meters Short (90) scale display of readings
METRIK F (Frequency meters) Single and double pointer indication Single and double reed indication Differential indication Short (90) and long scale (240) display of readings
METRIK M (Maximum Demand meters) 8, 15, 20 or 30 minute integration time With a saturable CT With or without instantaneous current indication Short (90) scale display of readings
METRIK P (Phase Angle meters) Single or three phase connection 3 wire or 4 wire, balanced or unbalanced loads Short (90) and long scale (240) display of readings
METRIK PSI (Phase Sequence Indication) Single phase connection
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METRIK
METRIK R (Varmeters) Single or three phase connection 3 wire or 4 wire, balanced or unbalanced loads Class 1.0 or 1.5 accuracy Short (90) and long scale (240) display of readings
METRIK S (Synchronising Instruments) Single or three phase connection Rotary (360) scale display of readings
METRIK T (Hours run/time elapse Meters) AC or DC voltage input Rotary digit indication
METRIK V (Voltmmeters) AC moving iron measurement DC moving coil measurement AC rectified moving coil measurement Short (90) and long scale (240) display of readings
METRIK W (Wattmeters) Single or three phase connection 3 wire or 4 wire, balanced or unbalanced loads Class 1.0 or 1.5 accuracy Short (90) and long scale (240) display of readings
User friendly features. High accuracy, typically 1.5 for for current, voltage and power measurements.
Class 0.5 for frequency meaurements.
True RMS measurement (moving iron). Mean measurement (moving coil). Customer defined scaling details.
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8. TECHNICAL INFORMATION 8.1 METRIK A (AMMETERS)
METRIK A ammeters can be supplied with either moving iron, moving coil or rectified moving coil movements.
DESIGN
Accuracy Class 1.5
Burden 0.3 1.2VA
Material PC (uninflammable to UL94 V-0)
Enclosure protection Case IP52, terminals IP00 to EN60529 :1989
Operating position Vertical
Test Voltage 2kv rms to EN61010-1 :1990
Environmental conditions EN60051-1 :1995/01
EN60051-2 :1984
EN60051-9 :1988
Temperature: nominal range -25 +55 C
Temperature: reference range +18 +28 C
Temperature: storage range -40 +70 C
Humidity Up to 80% (without condensing)
DIMENSIONS
Case size 48mm 72mm 96mm 144mm
Bezel height (mm) 48mm 72mm 96mm 144mm
Panel cut out (mm) 45mm+ 0.6mm
68mm+ 0.8mm
92mm+ 0.8mm
138mm+ 1.0mm
Bezel depth (mm) 5mm 5.5mm 5.5mm 8mm
Scale length 41mm 62mm 92mm 135mm
Weight 0.14kg 0.18kg 0.2kg 0.4kg
8.1.1 Moving Iron
Meters with a moving iron are intended for measurement of AC currents with frequencies from 15 Hz to 100 Hz. They measure rms values independently on the signal form of current. The accuracy class is 1.5. As the beginning of the scale is non-linear, reading from 15% of rating onwards is possible. Ammeters with ratings for double, triple or even six-times the value of rated current are available on request. The overload range is extremely non-linear.
MEASURING RANGE
mA 100, 150, 250, 400 or 600 mA
A 1, 1.5, 2.5, 4, 6, 10, 15, 25, 40 or 60A
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METRIK
8.1.2 Moving Coil
Meters with a moving coil are intended for measurement of direct currents. A measuring system with a core magnet is not sensitive to external electromagnetic fields and is resistant to mechanical impacts and vibrations. The scale is entirely linear and interchangeable. The accuracy class is 1.5.
MEASURING RANGE
A 40, 60, 100, 150, 250, 400 or 600 A mA 1, 1.5, 2.5, 4, 5, 6, 10, 15, 20, 25, 40, 50, 60, 100, 150, 250, 400, 600mA or
4 20mA
8.1.3 Rectified Moving Coil
Meters with a moving coil and a rectifier are intended for measurement of AC currents in the frequency range from 40 Hz to 5000 Hz where low meter consumption is required. The meters measure the mean value of rectified current. The scale is expressed in rms values at the sine form of the measured quantity. Distortion or deviation from the sine form of more than 1% entails additional errors. The scale is interchangeable. The accuracy class is 1.5.
MEASURING RANGE
A 100, 150, 250, 400, 500 or 600 A mA 1, 1.5, 2.5, 4, 5, 6, 10,mA
8.2 METRIK C (METER RELAYS)
METRIK C meter relays combine indication and control of ac or dc voltages and currents. They can be used with a variety of transducers or sensors and have a wide range of applications in the electrical amd process industries.
Indication is by means of accurate and robust moving iron and moving coil movements. Each instrument has two independently adjustable alarm or control points which can be set anywhere on the scale by back of panel potentiometers.
Two relay outputs are provided with adjustable time delay on pickup or drop off. The relays are available in combinations of alarm indication:
High and Low Low and Low High and High
This alarm configuration has to be specified at the time of order. In addition LED indicators display when either of the alarms trip.
DIMENSIONS
Case size 96mm
Bezel height (mm) 96mm
Panel cut out (mm) 91mm
Bezel depth (mm) 5.7mm
Scale length 90mm
Weight 0.48g
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MEASURING RANGE
Voltage mV 10, 15, 20, 25, 40 or 50mV 60, 100, 150, 250, 300, 400, 500 or 600mV
Voltage V 1, 1.5, 2.5, 4 , 5, 6 , 10, 15, 20, 25 or 40V 50, 60, 100, 150, 250 or 300V 400, 500 or 600V
Current A 15, 20, 30, 40 or 50A 60, 100, 150, 250, 300, 400, 500 or 600A
Current mA 1, 1.5, 2.5, 4 , 5, 6 , 10, 15, 20, 25, 40 or 60mA 100, 150, 200, 300, 400, 500 or 600mA
Current A 1, 1.5, 2.5, 4 , 5A
8.3 METRIK D (DIFFERENTIAL METER)
METRIK D differential meters can be supplied as either showing the difference between two measured signals or showing two measured values on the same meter.
DIMENSIONS
Case size 96mm 144mm
Bezel height (mm) 96mm 144mm
Panel cut out (mm) 92mm+ 0.8mm 138mm+1.0mm
Bezel depth (mm) 5.5mm 8mm
Scale length 92mm 135mm
Weight 0.2kg 0.4kg
Instrument Options : the following options are available on this instrument:
Glass: Clear, low glare or polycarbonate Construction : Tropic sealing
8.3.1 Differential instruments
METRIK D differential instruments are intended to show the diffential measurement of either voltage or frequency. The voltmeters use rectified moving coil movements whlist the frequency meters have a microprocessor measurement method.
DESIGN : VOLTAGE
Accuracy Class 1.5
Burden 0.3 1.2VA
Material PC (uninflammable to UL94 V-0)
Enclosure protection Case IP52, terminals IP00 to EN60529 :1989
Operating position Vertical
Test Voltage 2kv rms to EN61010-1 :1990
Environmental conditions EN60051-1 :1995/01 EN60051-2 :1984 EN60051-9 :1988
Temperature: nominal range -25 +55 C
Temperature: reference range +18 +28 C
Temperature: storage range -40 +70 C
Humidity Up to 80% (without condensing)
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METRIK
DESIGN : FREQUENCY
Accuracy Class 0.5
Voltage circuit 57.7/110, 230, 400 or 500V ac
Voltage range (power supply) 20%
Voltage Burden 1.0VA (57.7V) to 2VA (500V)
Voltage overload 1.2 x continuously, 2 x for 5s
Material PC (uninflammable to UL94 V-0)
Enclosure protection Case IP52, terminals IP00 to EN60529 :1997
Operating position Vertical
Test Voltage EN61010-1 :2002, CAT III 300v
Environmental conditions EN60051-1 :1995/01 EN60051-2 :1984 EN60051-9 :1988
Temperature: nominal range -25 +55 C
Temperature: reference range +18 +28 C
Temperature: storage range -40 +70 C
Humidity Up to 80% (without condensing)
MEASURING RANGE
Frequency 45 .. 55Hz, 48 .. 52Hz, 45 .. 65Hz, 55 .. 65Hz or 58 .. 62Hz
8.3.2 Dual value instruments
METRIK D dual value instruments are intended to show two voltage measurements on the same meter. They use a moving iron measurement method.
DESIGN : VOLTMETERS
Accuracy Class 1.5
Burden 0.3 1.2VA
Material PC (uninflammable to UL94 V-0)
Enclosure protection Case IP52, terminals IP00 to EN60529 :1989
Operating position Vertical
Test Voltage 2kv rms to EN61010-1 :1990
Environmental conditions EN60051-1 :1995/01 EN60051-2 :1984 EN60051-9 :1988
Temperature: nominal range -25 +55 C
Temperature: reference range +18 +28 C
Temperature: storage range -40 +70 C
Humidity Up to 80% (without condensing)
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8.4 METRIK F (FREQUENCY METERS)
METRIK F frequency meters can be supplied with either pointer or reed indication.
8.4.1 Pointer instruments
METRIK F Pointer frequency meters are intended for measurement of frequencies in the range from 45 Hz to 65 Hz. The accuracy class is 0.5. It is designed for measurement of mains voltage frequency within five different measuring ranges (45-55 Hz, 48-52 Hz, 45-65 Hz, etc). The Meter consists of: power supply unit, measuring unit with microprocessor and instrument with moving coil.
DESIGN
Accuracy Class 0.5
Voltage circuit 57.7/110, 230, 400 or 500V ac
Voltage range (power supply) 20%
Voltage Burden 1.0VA (57.7V) to 2VA (500V)
Voltage overload 1.2 x continuously, 2 x for 5s
Material PC (uninflammable to UL94 V-0)
Enclosure protection Case IP52, terminals IP00 to EN60529 :1997
Operating position Vertical
Test Voltage EN61010-1 :2002, CAT III 300v
Environmental conditions EN60051-1 :1995/01 EN60051-2 :1984 EN60051-9 :1988
Temperature: nominal range -25 +55 C
Temperature: reference range +18 +28 C
Temperature: storage range -40 +70 C
Humidity Up to 80% (without condensing)
DIMENSIONS
Case size 72mm 96mm
Bezel height (mm) 72mm 96mm
Panel cut out (mm) 68mm+0.8mm 92mm+0.8mm
Bezel depth (mm) 5.5mm 5.5mm
Scale length 62mm 92mm
Weight 0.18kg 0.2kg
MEASURING RANGE
Frequency 45 .. 55Hz, 48 .. 52Hz, 45 .. 65Hz, 55 .. 65Hz or 58 .. 62Hz
Instrument Options: the following options are available on this instrument:
Glass: Clear, low glare or polycarbonate Construction : Tropic sealing
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METRIK
8.4.2 Reed instruments
METRIK F Reed frequency meters are intended for measurement of frequencies in the range from 45 Hz to 65 Hz. Two-system reed frequency meters are intended for measurement of two frequencies in the system for synchronisation. Their class is 0.5. They are in three different sizes: 144x144 mm, 96x96 mm or (72x72mm single reed only).
DESIGN
Accuracy Class 0.5
Voltage circuit 110, 230, 400 or 500V ac
Voltage range (power supply) 20%
Voltage Burden 1.0VA (57.7V) to 2VA (500V)
Voltage overload 1.2 x continuously, 2 x for 5s
Material PC (uninflammable to UL94 V-0)
Enclosure protection Case IP52, terminals IP00 to EN60529 :1989
Operating position Vertical
Test Voltage 2kv to EN61010-1 :1990
Environmental conditions EN60051-1 :1995/01 EN60051-2 :1984 EN60051-9 :1988
Temperature: nominal range -25 +55 C
Temperature: reference range +18 +28 C
Temperature: storage range -40 +70 C
Humidity Up to 80% (without condensing)
DIMENSIONS
Case size 72mm 96mm 144mm
Bezel height (mm) 72mm 96mm 144mm
Panel cut out (mm) 68mm+0.8mm 92mm+0.8mm 138mm+1.0mm
Bezel depth (mm) 5.5mm 5.5mm 8mm
Scale length 62mm 92mm 135mm
Weight 0.18kg 0.2kg 0.4kg
MEASURING RANGE
Frequency 47 .. 53Hz, 57 .. 63Hz, 45 .. 55Hz or 55 .. 65Hz
Instrument Options: the following options are available on this instrument:
Glass: Clear, low glare or polycarbonate Construction : Tropic sealing
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8.5 METRIK M (MAXIMUM DEMAND AMMETERS)
8.5.1 Maximum demand ammeters
METRIK M Maximum demand ammeters can be supplied with either with or without an instantaneous current indicator. These bimetal maximum current meters with a bimetal measuring system are intended for testing the thermal load of transformers, cables, electrical machines, etc. They indicate average rms current value in a setting period of 8, 15, 20 or 30 minutes. The accuracy class is 3 and the meters are provided with an interchangeable scale. METRIK M are supplied with a protecting saturable current transformer (available in 96mm or 144mm case sizes).
DESIGN
Accuracy Class 3.0 integrated measurement
Accuracy Class 1.5 instananeous measurement
Current circuit 1A or 5A
Current Burden 1.8VA (1A) or 2.8VA (5A)
Material PC (uninflammable to UL94 V-0)
Enclosure protection Case IP52, terminals IP00 to EN60529 :1989
Operating position Vertical
Test Voltage 2kv rms to EN61010-1 :1990
Environmental conditions EN60051-1 :1995/01 EN60051-2 :1984 EN60051-9 :1988
Temperature: nominal range -25 +55 C
Temperature: reference range +18 +28 C
Temperature: storage range -40 +70 C
Humidity Up to 80% (without condensing)
DIMENSIONS
Case size 96mm 144mm
Bezel height (mm) 96mm 144mm
Panel cut out (mm) 92mm+0.8mm 138mm+1.0mm
Bezel depth (mm) 5.5mm 8mm
Scale length 92mm 135mm
Weight 0.2kg 0.4kg
MEASURING RANGE
Rating is calculated as 20% higer than the transformer ratio
Transformer ratio Rating Transformer ratio Rating
10A 12 A 40A 48A
15A 18 A 50A 60A
20A 24A 60A 72A
25A 30A 75A 90A
30A 36A 80A 96A
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METRIK
8.6 METRIK P (POWER FACTOR METERS)
METRIK P Power factor meters are intended for measurement of power factors in single or three phase networks, with balanced or unbalanced loads. The accuracy class is 2.5. Power factor meters are available in two different sizes: 144x144 mm and 96x96 mm.
DESIGN Accuracy Class 2.5 Voltage circuit 57.7/100, 63.5/110 or 230/400V ac
3u or 3b max voltage 150/250V 4u, 4b or 1b max voltage 230/400V
Voltage Burden
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8.7 METRIK PSI (PHASE SEQUENCE INDICATORS)
METRIK PSI Phase Sequence Indicators are intended for to show that the phase rotation of the connected three phase supply is correct. Illumination of the red neonindicator shows incorrect phase rotation and green neon shows correct rotation.
DESIGN
Voltage circuit Specified within 100 to 500V ac
Frequency range 50 or 60Hz
Material PC (uninflammable to UL94 V-0)
Enclosure protection Case IP52, terminals IP00 to EN60529 :1989
Operating position Vertical
Test Voltage 3.7kv rms to EN61010-1 :1990
Environmental conditions EN60051-1 :1995/01 EN60051-2 :1984 EN60051-9 :1988
Temperature: nominal range -25 +55 C
Temperature: reference range +18 +28 C
Temperature: storage range -40 +70 C
Humidity Up to 80% (without condensing)
DIMENSIONS
Case size 72mm 96mm
Bezel height (mm) 72mm 96mm
Panel cut out (mm) 68mm+0.8mm 92mm+0.8mm
Bezel depth (mm) 5.5mm 5.5mm
Scale length 62mm 92mm
Weight 0.18kg 0.3kg
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METRIK
8.8 METRIK R (VARMETERS)
METRIK R Power meters are electronic meters intended for measuring reactive power in single or three phase networks, with balanced or unbalanced loads. The accuracy class is 1.5, but on request we are also able to produce class 1 meters. The scale value depends on primary values of current and voltage. The power meters are in two different sizes: 144x144 mm or 96x96 mm.
DESIGN Accuracy Class 1.5 or Class 1.0 Voltage circuit 57.7/100, 63.5/110 or 230/400V ac
3u or 3b max voltage 150/250V 4u, 4b or 1b max voltage 230/400V
Voltage Burden
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Instrument Options : the following options are available on this instrument:
Scales : Spares scales and red line scale markings Glass : Clear, low glare or polycarbonate Construction : Tropical sealing
8.9 METRIK S (SYNCHRONISING METER)
METRIK S synchronising meters are used to indicate when two voltage circuits can be connected. This is done by checking that the voltage magnitude, phase rotation and frequency are within preset limits.
8.9.1 Electronic meters
The SL96 synchroscope comprises of a circle of 18 red LEDs that light alternatively to indicate phase differences. The speed and direction in which the LEDs light indicates the whether the incoming machine is fast or slow. If the frequency is difference exceeds 3Hz three LEDs above the FAST or SLOW inscriptions light alternately. In addition, the SL96 has a LCD display for synchronisation information. Optional check- synchronising output relay contacts close when synchronisation is reached.
DESIGN
Voltage circuit 57.7/100, 63.5/110, 120, 380, 415 or 440V ac
Voltage range 80 120%
Voltage Burden
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METRIK
8.9.2 Electro-mechanical meters
These electromechanical synchroscopes have a analogue indication. They are available for single (SM96 or SM14) and three phase (ST96 or ST14) circuits. The speed and direction of the pointer indicates the whether the incoming machine is fast or slow. The pointer will rotate in the correct direction when the difference in supply and running frequency has been reduced to 1.5Hz or below.
DESIGN
Voltage circuit Single : 57.7/100, 63.5/110, 220, 380, 440 or 500V ac Three : 63.5/110, 220, 380, 440 or 500V ac
Voltage Burden
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Glass : Clear or low glare (not 48mm)
DIMENSIONS
Case size 48mm 72mm 96mm
Bezel height (mm) 48mm 72mm 96mm
Panel cut out (mm) 45mm+0.6mm 68mm+0.8mm 92mm+0.8mm
Bezel depth (mm) 5mm 5.5mm 5.5mm
Weight 0.14kg 0.18kg 0.2kg
8.11 METRIK V (VOLTMETERS)
METRIK V voltmeters can be supplied with moving iron, moving coil or rectified moving coil movements
DESIGN
Accuracy Class 1.5
Burden 0.3 1.2VA
Material PC (uninflammable to UL94 V-0)
Enclosure protection Case IP52, terminals IP00 to EN60529 :1989
Operating position Vertical
Test Voltage 2 kv rms to EN61010-1 :1990
Environmental conditions EN60051-1 :1995/01 EN60051-2 :1984 EN60051-9 :1988
Temperature: nominal range -25 +55 C
Temperature: reference range +18 +28 C
Temperature: storage range -40 +70 C
Humidity Up to 80% (without condensing)
DIMENSIONS
Case size 48mm 72mm 96mm 144mm
Bezel height (mm) 48mm 72mm 96mm 144mm
Panel cut out (mm) 45mm + 0.6mm 68mm + 0.8mm 92mm + 0.8mm 138mm + 1.0mm
Bezel depth (mm) 5mm 5.5mm 5.5mm 8mm
Scale length 41mm 62mm 92mm 135mm
Weight 0.14kg 0.18kg 0.2kg 0.4kg
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METRIK
8.11.1 Moving Iron
Meters with a moving iron are intended for measurement of AC voltages with frequencies from 15 Hz to 100 Hz. They measure rms values independently on the signal form of voltage. The accuracy class is 1.5. As the beginning of the scale is non-linear, reading from 15% of rating onwards is possible. The overload range is extremely non-linear.
MEASURING RANGE
V 6, 10, 15, 25, 40, 60, 100, 150, 250, 400 or 600V
8.11.2 Moving Coil
Meters with a moving coil are intended for measurement of direct voltages. A measuring system with a core magnet is not sensitive to external electromagnetic fields and is resistant to mechanical impacts and vibrations. The scale is entirely linear and interchangeable. The accuracy class is 1.5.
MEASURING RANGE
mV 100, 150, 250, 400 or 600mV
V 1, 1.5, 2.5, 4, 6, 10, 15, 25, 40, 60, 100, 150, 250, 400, 500 or 600V
Sensitivity 1 k / per volt 8.11.3 Rectified Moving Coil
Meters with a moving coil and a rectifier are intended for measurement of AC voltages in the frequency range from 40 Hz to 5000 Hz where low meter consumption is required. The meters measure the mean value of rectified voltage. The scale is expressed in rms values at the sine form of the measured quantity. Distortion or deviation from the sine form of more than 1% entails additional errors. The scale is interchangeable. The accuracy class is 1.5.
MEASURING RANGE
V 2.5, 6, 10, 15, 25, 40, 60, 100, 150, 250, 400, 500 or 600V
8.12 METRIK W (WATTMETERS)
METRIK W Wattmeters are electronic meters intended for measuring active power in single or three phase networks, with balanced or unbalanced loads. The accuracy class is 1.5, but on request we are also able to produce class 1 meters. The scale value depends on primary values of current and voltage. The power meters are in two different sizes: 144x144 mm or 96x96 mm.
DESIGN Accuracy Class 1.5 or Class 1.0 Voltage circuit 57.7/100, 63.5/110 or 230/400V ac
3u or 3b max voltage 150/250V 4u, 4b or 1b max voltage 230/400V
Voltage Burden
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EN60051-2 :1984 EN60051-9 :1988
Temperature: nominal range -25 +55 C Temperature: reference range +18 +28 C Temperature: storage range -40 +70 C Humidity Up to 80% (without condensing)
DIMENSIONS Case size 96mm 144mm Bezel height (mm) 96mm 144mm Panel cut out (mm) 92mm + 0.8mm 138mm + 1.0mm Bezel depth (mm) 5.5mm 8mm Scale length 92mm 135mm Weight 0.3kg 0.3kg
MEASURING RANGE Power is calculated as follows : Active Reactive Single phase system 1b U I Cos U I Sin Single phase system 4b 3 x U I Cos 3 x U I Sin Three phase, 3 wire system 3 x U I Cos 3 x U I Sin Three phase, 4 wire system 3 x U I Cos 3 x U I Sin
Instrument Options: the following options are available on this instrument:
Scales : Spares scales and red line scale markings Glass : Clear, low glare or polycarbonate Construction : Tropic sealing
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METRIK
9. INSTRUMENT NOMENCLATURE The METRIK analogue instrumentation range uses the following model number system to identify the mechanical construction of the meter. In addition information of the design of the dial will also be required.
9.1 METRIK A ammeters
The model number is 13 digits long. The first 5 digits identify the application whilst the remainder identify the technical specification of the instrument.
Identifier Scale Case Accuracy Type
A48DC 90 48mm 1.5% DC Moving Coil
A72DC 90 72mm 1.5% DC Moving Coil
A96DC 90 96mm 1.5% DC Moving Coil
A14DC 90 144mm 1.5% DC Moving Coil
A48DI 90 48mm 1.5% AC Moving Iron
A72DI 90 72mm 1.5% AC Moving Iron
A96DI 90 96mm 1.5% AC Moving Iron
A14DI 90 144mm 1.5% AC Moving Iron
A48DR 90 48mm 1.5% AC Rectified Moving Coil
A72DR 90 72mm 1.5% AC Rectified Moving Coil
A96DR 90 96mm 1.5% AC Rectified Moving Coil
A14DR 90 144mm 1.5% AC Rectified Moving Coil
A48IC 240 48mm 1.5% DC Moving Coil
A72IC 240 72mm 1.5% DC Moving Coil
A96IC 240 96mm 1.5% DC Moving Coil
A14IC 240 144mm 1.5% DC Moving Coil
A48IR 240 48mm 1.5% AC Rectified Moving Coil
A72IR 240 72mm 1.5% AC Rectified Moving Coil
A96IR 240 96mm 1.5% AC Rectified Moving Coil
A14IR 240 144mm 1.5% AC Rectified Moving Coil
9.2 METRIK C meter relays
The model number is 14 digits long, The first 6 digits identify the application whilst the remaining 8 identify the technical specification of the instrument.
Identifier Movement Case Type
CA96ZC Moving Coil 96mm Ammeter
CA96ZI Moving Iron 96mm Ammeter
CA96ZR Rectified Moving Coil 96mm Ammeter
CV96ZC Moving Coil 96mm Voltmeter
CV96ZI Moving Iron 96mm Voltmeter
CV96ZR Rectified Moving Coil 96mm Voltmeter
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9.3 METRIK D Differential Instruments
The model number is 13 digits long, The first 5 digits identify the application whilst the remaining 8 identify the technical specification of the instrument.
Identifier Case Type
2V96D 96mm Double Voltmeter
2V14D 144mm Double Voltmeter
DF96D 96mm Differential Frequency
DF14D 144mm Differential Frequency
DV96D 96mm Differential Voltmeter
DV14D 144mm Differential Voltmeter
9.4 METRIK F frequency meters
The model number is 12 or 13 digits long depending on the model selected. The first 3 or 4 digits identify the application whilst the remaining 9 identify the technical specification of the instrument.
Identifier Scale Case Accuracy Type
DF14D 90 144mm 0.5% Differential Pointer
DF96D 90 96mm 0.5% Differential Pointer
F72D 90 72mm 0.5% Single pointer
F72L 240 72mm 0.5% Single pointer
F96D 90 96mm 0.5% Single pointer
F96L 240 96mm 0.5% Single pointer
2R14D - 144mm 0.5% Single reed
2R72D - 72mm 0.5% Single reed
2R96D - 96mm 0.5% Single reed
2F14D 90 144mm 0.5% Double pointer
2F14L 240 144mm 0.5% Double pointer
2F96D 90 96mm 0.5% Double pointer
2F96L 240 96mm 0.5% Double pointer
2R14D - 144mm 0.5% Double reed
2R96D - 96mm 0.5% Double reed
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METRIK
9.5 METRIK M maximum demand meter
The model number is 14 digits long. The first 6 digits identify the application whilst the remainder identify the technical specification of the instrument.
Identifier Scale Case Time Type
M96DDA 90 96mm 8 min With instantaneous ammeter
M96DDB 90 96mm 15 min With instantaneous ammeter
M96DDC 90 96mm 20 min With instantaneous ammeter
M96DDD 90 96mm 30 min With instantaneous ammeter
M96DSA 90 96mm 8 min Without instantaneous ammeter
M96DSB 90 96mm 15 min Without instantaneous ammeter
M96DSC 90 96mm 20 min Without instantaneous ammeter
M96DSD 90 96mm 30 min Without instantaneous ammeter
9.6 METRIK P Phase Angle meters
The model number is 16 digits long. The first 6 digits identify the application whilst the remainder identify the technical specification of the instrument.
Identifier Scale Case Accuracy Phase Wires Load
P14DB1 90 144mm 2.5% Single - balanced
P14DB3 90 144mm 2.5% three three balanced
P14DB4 90 144mm 2.5% three four balanced
P14DU3 90 144mm 2.5% three three unbalanced
P14DU4 90 144mm 2.5% three four unbalanced
P14IB1 240 144mm 2.5% Single - balanced
P14IB3 240 144mm 2.5% three three balanced
P14IB4 240 144mm 2.5% three four balanced
P14IU3 240 144mm 2.5% three three unbalanced
P14IU4 240 144mm 2.5% three four unbalanced
P96DB1 90 96mm 2.5% Single - balanced
P96DB3 90 96mm 2.5% three three balanced
P96DB4 90 96mm 2.5% three four balanced
P96DU3 90 96mm 2.5% three three unbalanced
P96DU4 90 96mm 2.5% three four unbalanced
P96IB1 240 96mm 2.5% Single - balanced
P96IB3 240 96mm 2.5% three three balanced
P96IB4 240 96mm 2.5% three four balanced
P96IU3 240 96mm 2.5% three three unbalanced
P96IU4 240 96mm 2.5% three four unbalanced
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9.7 METRIK PSI Phase Sequence Indication
The model number is 10 digits long. The first 5 digits identify the application whilst the remainder identify the technical specification of the instrument.
Identifier Case Digits 6 to 8 Digit 9 Digit 10
PSI72 72mm Ac voltage Operating frequency Design issue
PSI96 96mm Ac voltage Operating frequency Design issue
9.8 METRIK R Varmeters
The model number is 16 digits long. The first 6 digits identify the application whilst the remainder identify the technical specification of the instrument.
Identifier Scale Case Accuracy Phase Wires Load
R14DB1 90 144mm 1.5% Single - balanced
R14DB3 90 144mm 1.5% three three balanced
R14DB4 90 144mm 1.5% three four balanced
R14DU3 90 144mm 1.5% three three unbalanced
R14DU4 90 144mm 1.5% three four unbalanced
R14IB1 240 144mm 1.5% Single - balanced
R14IB3 240 144mm 1.5% three three balanced
R14IB4 240 144mm 1.5% three four balanced
R14IU3 240 144mm 1.5% three three unbalanced
R14IU4 240 144mm 1.5% three four unbalanced
R96DB1 90 96mm 1.5% Single - balanced
R96DB3 90 96mm 1.5% three three balanced
R96DB4 90 96mm 1.5% three four balanced
R96DU3 90 96mm 1.5% three three unbalanced
R96DU4 90 96mm 1.5% three four unbalanced
R96IB1 240 96mm 1.5% Single - balanced
R96IB3 240 96mm 1.5% three three balanced
R96IB4 240 96mm 1.5% three four balanced
R96IU3 240 96mm 1.5% three three unbalanced
R96IU4 240 96mm 1.5% three four unbalanced
R14EB1 90 144mm 1.0% Single - balanced
R14EB3 90 144mm 1.0% three three balanced
R14EB4 90 144mm 1.0% three four balanced
R14EU3 90 144mm 1.0% three three unbalanced
R14EU4 90 144mm 1.0% three four unbalanced
R14KB1 240 144mm 1.0% Single - balanced
R14KB3 240 144mm 1.0% three three balanced
R14KB4 240 144mm 1.0% three four balanced
R14KU3 240 144mm 1.0% three three unbalanced
R14KU4 240 144mm 1.0% three four unbalanced
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METRIK
Identifier Scale Case Accuracy Phase Wires Load
R96EB1 90 96mm 1.0% Single - balanced
R96EB3 90 96mm 1.0% three three balanced
R96EB4 90 96mm 1.0% three four balanced
R96EU3 90 96mm 1.0% three three unbalanced
R96EU4 90 96mm 1.0% three four unbalanced
R96KB1 240 96mm 1.0% Single - balanced
R96KB3 240 96mm 1.0% three three balanced
R96KB4 240 96mm 1.0% three four balanced
R96KU3 240 96mm 1.0% three three unbalanced
R96KU4 240 96mm 1.0% three four unbalanced
9.9 METRIK S Synchronising Instruments
The model number is 11 (mechanical movement) or 14 (electronic movement) digits long. The first 4 digits identify the application whilst the remainder identify the technical specification of the instrument.
Identifier Case Connection Type
SL96 96mm Single phase Electronic display
SM14 144mm Single phase Mechanical pointer display
SM96 96mm Single phase Mechanical pointer display
ST14 144mm Three phase Mechanical pointer display
ST96 96mm Three phase Mechanical pointer display
9.10 METRIK T time elapse/hours run
The model number is 12 digits long. The first 4 digits identify the application whilst the remainder identify the technical specification of the instrument.
Identifier Case Type
T48D 48mm AC or DC hours run
T72D 72mm AC or DC hours run
T96D 96mm AC or DC hours run
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9.11 METRIK V Voltmeters
The model number is 13 digits long. The first 5 digits identify the application whilst the remainder identify the technical specification of the instrument.
Identifier Scale Case Accuracy Type
V48DC 90 48mm 1.5% DC Moving Coil
V72DC 90 72mm 1.5% DC Moving Coil
V96DC 90 96mm 1.5% DC Moving Coil
V14DC 90 144mm 1.5% DC Moving Coil
V48DI 90 48mm 1.5% AC Moving Iron
V72DI 90 72mm 1.5% AC Moving Iron
V96DI 90 96mm 1.5% AC Moving Iron
V14DI 90 144mm 1.5% AC Moving Iron
V48DR 90 48mm 1.5% AC Rectified Moving Coil
V72DR 90 72mm 1.5% AC Rectified Moving Coil
V96DR 90 96mm 1.5% AC Rectified Moving Coil
V14DR 90 144mm 1.5% AC Rectified Moving Coil
V48IC 240 48mm 1.5% DC Moving Coil
V72IC 240 72mm 1.5% DC Moving Coil
V96IC 240 96mm 1.5% DC Moving Coil
V14IC 240 144mm 1.5% DC Moving Coil
V48IR 240 48mm 1.5% AC Rectified Moving Coil
V72IR 240 72mm 1.5% AC Rectified Moving Coil
V96IR 240 96mm 1.5% AC Rectified Moving Coil
V14IR 240 144mm 1.5% AC Rectified Moving Coil
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METRIK
9.12 METRIK W Wattmeters
The model number is 16 digits long. The first 6 digits identify the application whilst the remainder identify the technical specification of the instrument.
Identifier Scale Case Accuracy Phase Wires Load W14DB1 90 144mm 1.5% Single - balanced W14DB3 90 144mm 1.5% three three balanced W14DB4 90 144mm 1.5% three four balanced W14DU3 90 144mm 1.5% three three unbalanced W14DU4 90 144mm 1.5% three four unbalanced W14IB1 240 144mm 1.5% Single - balanced W14IB3 240 144mm 1.5% three three balanced W14IB4 240 144mm 1.5% three four balanced W14IU3 240 144mm 1.5% three three unbalanced W14IU4 240 144mm 1.5% three four unbalanced W96DB1 90 96mm 1.5% Single - balanced W96DB3 90 96mm 1.5% three three balanced W96DB4 90 96mm 1.5% three four balanced W96DU3 90 96mm 1.5% three three unbalanced W96DU4 90 96mm 1.5% three four unbalanced W96IB1 240 96mm 1.5% Single - balanced W96IB3 240 96mm 1.5% three three balanced W96IB4 240 96mm 1.5% three four balanced W96IU3 240 96mm 1.5% three three unbalanced W96IU4 240 96mm 1.5% three four unbalanced W14EB1 90 144mm 1.0% Single - balanced W14EB3 90 144mm 1.0% three three balanced W14EB4 90 144mm 1.0% three four balanced W14EU3 90 144mm 1.0% three three unbalanced W14EU4 90 144mm 1.0% three four unbalanced W14KB1 240 144mm 1.0% Single - balanced W14KB3 240 144mm 1.0% three three balanced W14KB4 240 144mm 1.0% three four balanced W14KU3 240 144mm 1.0% three three unbalanced W14KU4 240 144mm 1.0% three four unbalanced W96EB1 90 96mm 1.0% Single - balanced W96EB3 90 96mm 1.0% three three balanced W96EB4 90 96mm 1.0% three four balanced W96EU3 90 96mm 1.0% three three unbalanced W96EU4 90 96mm 1.0% three four unbalanced W96KB1 240 96mm 1.0% Single - balanced W96KB3 240 96mm 1.0% three three balanced W96KB4 240 96mm 1.0% three four balanced W96KU3 240 96mm 1.0% three three unbalanced W96KU4 240 96mm 1.0% three four unbalanced
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10. WIRING DIAGRAMS 10.1 ST/SM SYNCHRONISING METERS
R(L1)
M0104ENa
S(L2)T(L3)
R(L1)S(L2)T(L3)
u v u v
u v u v
u v
u v
incoming running
2 5 8 21 51
ST THREE PHASE CONNECTION
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METRIK
M0105ENa
R(L1)
ACC1
S(L2)
R(L1)S(L2)
u v
100V125V
100/3, 110/3200V, 380V440V, 500V
u v
u v
u v
u v
u v
incoming running
HB EHB E
2 52 5
5121HB E
SM SINGLE PHASE CONNECTION
10.2 SL SYNCHRONISING METERS
M0102ENa
SYNC. BUS BAR GEN
GEN.
1 N
3 N
2L
4L5
K1
N
L
US
6
SL96 PHASE TO NEUTRAL CONNECTION
M0101ENa
SYNC. BUS BAR GEN
GEN.
1 L1
3 L1
2L2
4L25
K1
L1L2L3
US
6
P SL96 PHASE TO PHASE CONNECTION
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10.3 P, R AND W POWER METERS
CT3CT215
16 17 1819 20 21
Bat.
13 14
11 2 5 8
L1L2L3N
K L
K L
U V
U V
>>>
CT1
4b
3b
CT3CT215
16 17 1819 20 21
Bat.
13 14
11 2 5 8
L1L2L3N
K L
K L
U V
U V
>>>
CT1
U V
U V
3b
CT3CT215
16 17 1819 20 21
Bat.
13 14
11 2 5 8
L1L2L3N
K L
K L
K L
K L
U V
U V
>>>
>>>
CT1
U V
U V
CT3CT215
16 17 1819 20 21
Bat.
13 14
11 2 5 8
L1
N
K L
K L
U V
U V
>>>
CT1
1b
Note: Connection teminals 19, 20, 21 are not on Power Factor types.
b-balanced load u-unbalanced load
4u
M0106ENa
CT3CT215
16 17 1819 20 21
Bat.
13 14
11 2 5 8
L1L2L3N
K L
K L
K L
K L
K L
K L
u u u N
V V V
U U U N
V V V
>>>
>>>
>>>
CT1
1b*
*
*
*
3b*
*
*
*
3u*
*
*
*
4b*
*
*
*
4u*
*
*
*
Watts & varsPower Factor
M161M2x1
CONNECTION DIAGRAMS FOR PANEL METERS
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METRIK
11. INSTRUMENTATION ACCESSORY 11.1 TA SERIES MOULDED CASE CURRENT TRANSFORMERS
11.1.1 Introduction
The TA Series is a range of moulded case current transformers manufactured to IEC 60185, the International Electrotechnical Commission Standard which specifies the rating and performance requirements for CTs to be used with electrical measuring instruments and protective devices. The TA Series includes CTs only for use with electrical measuring instruments.
Product Features User benefits Class 3, 1 or 0.5 with 5A and 1A
secondaries as standard One range of CTs allows a wide variety
of CT applications to be achieved from one supplier
Compact design having apertures designed for standard busbars up to 4000A
Conforms with industry standard dimensions for copperwork, eliminates mounting problems and reduces the requirement for special CTs to accommodate the primary circuit
Choice of bar or foot mounting Adaptable and easily mounted Terminal cover and all fixings supplied
with each CT as standard Full package approach simplifies
ordering process
11.1.1.1 Application
In addition to the class accuracy, primary and secondary ratings, when selecting a CT the aperture size and VA rating must also be determined.
11.1.1.2 Aperature size
The TA series is designed with aperture dimensions that suit the size of busbar for given primary currents. Table 1 shows the copper busbar current ratings for different sizes of busbar according to DIN 43761.
Busbar Current (Amps) Number of bars Dimensions
(mm) 1 2 3 4 20 x 5 320 560 725 -
20 x 10 500 925 1320 - 25 x 3 280 470 525 - 25 x 5 385 660 840 - 30 x 3 335 545 590 - 30 x 5 445 760 940 -
30 x 10 675 1200 1670 - 40 x 10 850 1470 2000 2580 50 x 5 695 1140 1330 2010
50 x 10 1020 1720 2320 2950 60 x 5 825 1330 1510 2310
60 x 10 1180 1960 2610 3290 80 x 5 1070 1680 1830 2830
80 x 10 1500 2410 3170 3930 100 x 5 1300 2010 2150 3300 100 x 10 1810 2850 3720 4530
TABLE 1 : COPPER BUSBAR CURRENT RATINGS
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11.1.1.3 VA RATING
The VA rating of a CT must be greater than, or equal to, the total VA burden of all the devices being fed and the connecting cable. In order to select a CT with an appropriate VA rating, refer to Tables 2 and 3 which show typical device and cable burdens respectively.
Moving Iron Instruments 0.4 . . . 1.5
Rectified Moving Coil Instruments 0.5
Power Instrument 1.0 . . . 2.5
Maximum Demand Indicators 2.5 . . . 5.0
Digital Indicators 0.5 . . . 1.0
kWh Meters 1.0 . . . 5.0
Recorders 2.0 . . . 5.0
Istat 300 Transducers 0.2 . . . 1.5
Numeric Relays 1.0 . . . 2.5
TABLE 2 : TYPICAL DEVICE BURDEN IN VA
Burden (VA/mm) of single conductor Copper cross section (mm2) For 5A secondary CT For 5A secondary CT
0.75 - 0.047
1 - 0.034
1.5 0.57 0.023
2 0.43 0.017
2.5 0.34 0.014
4 0.22 0.0085
6 0.14 0.0057
10 0.085 0.0034
TABLE 3 : CABLE BURDEN IN VA
11.1.2 CT selection tables
All CTs supplied with full fixing kit and terminal cover as standard. All CTs are available with either 1A or 5A secondary. Wound primary CTs for lower primary currents are also available on request.
VA Type TA210: Primary current, secondary 1A or 5A:
Wound Primary
5A 10A 15A 20A 25A 30A 40A 50A 60A
Class 0.5 15
Class 1 20
Class 3 30
75A 100A 125A 150A 200A 250A 300A
Class 0.5 15
Class 1 20
Class 3 30
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METRIK
VA Type TA400: Primary current, secondary 1A or 5A:
Size 100mm x 20mm
750A 800A 1000A 1200A 1500A 2000A
Class 0.5 10
Class 1 15
Class 3 20
VA Type TA500: Primary current, secondary 1A or 5A:
size 100mm x 30mm
1500A 2000A 1000A 2500A 3000A 4000A
Class 0.5 10
Class 1 15
Class 3 20
VA Type TA600: Primary current, secondary 1A or 5A:
size 125mm x 60mm
1000A 1500A 2000A 2500A 3000A 4000A 5000A
Class 0.5 15 20 30 35 40
Class 1 20 30 40 50 60
Class 3 30 40 60 70 80
11.1.3 Technical details
Manufactured to IEC60185 Current transformers
Maximum system voltage 660V
Secondary 1A or 5A
Voltage Isolation 3kv rms for 60 seconds
Overload 1.2In continuously
Thermal current (Ith) 60 x primary current for 1 second
Dynamic current (Idyn) 2.5 x (Ith)
Rated current factor 5 x primary
Case High Impact polycarbonate
11.1.3.1 Linearity
The error limits are maintained between the following load values:
For CT with VA > 2.5 between 25 and 100% In For CT with VA 2.5 between 50 and 100% In
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11.1.3.2 Accuracy
Accuracy at other load values is indicated in Table 4 below:
% accuracy at Phase angle in minutes at Class
0.1In 0.2In 1In 1.2In 0.1In 0.2In 1In 1.2In
0.5 1 0.75 0.5 0.5 60 45 30 20
1.0 2 1.5 1 1 120 90 60 60
TABLE 4 : ACCURACY AT LOAD VALUES
11.1.3.3 Order details
We require the following information:
1. Model type: to suit busbar size
2. CT ratio
3. Class/VA: to suit the loading conditions
eg. TA250: 800/5A: Class 0.5, 10VA
11.2 TC SERIES NARROW WIDTH CURRENT TRANSFORMERS
11.2.1 Introduction
The TC Series is a range of moulded case current transformers manufactured to IEC 60185, the International Electrotechnical Commission Standard which specifies the rating and performance requirements for CTs to be used with electrical measuring instruments and protective devices. The TC Series has a narrower profile than the TA range and is only for use with electrical measuring instruments.
11.2.1.1 Application
In addition to the class accuracy, primary and secondary ratings, when selecting a CT the aperture size and VA rating must also be determined.
11.2.1.2 Aperature size
The TC series is designed with aperture dimensions that suit the size of busbar for given primary currents. Table 1 above shows the copper busbar current ratings for different sizes of busbar according to DIN 43761.
11.2.1.3 VA rating
The VA rating of a CT must be greater than, or equal to, the total VA burden of all the devices being fed and the connecting cable. In order to select a CT with an appropriate VA rating, refer to Tables 2 and 3 that show typical device and cable burdens respectively.
11.2.2 CT selection tables
All CTs supplied with full fixing kit and terminal cover as standard. All CTs are available with either 1A or 5A secondary. Wound primary CTs for lower primary currents are also available on request.
VA Type TC050: Primary current, secondary 1A or 5A:
size 25mm x 5mm
40A 50A 60A 75A 100A 125A 150A 200A 250A
Class 0.5 - - - - 1.5 1.75 2.5 3.75 5
Class 1 - - 1.25 2 2.5 3.5 3.5 5 7.5
Class 3 1.5 3 3.5 3.5 3.75 5 5 5 7.5
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VA Type TC052: Primary current, secondary 1A or 5A: size 30mm x 10mm
125A 150A 200A 250A 300A 400A 500A 600A
Class 0.5 - 1 2.5 3.5 3.5 3.5 5 5
Class 1 1.5 2 3 3.75 3.75 5 5 7.5
Class 3 2 2.5 3.5 5 5 7.5 10 10
VA Type TC060: Primary current, secondary 1A or 5A: size 40mm x 10mm
150A 200A 250A 300A 400A 500A 600A 700A 800A
Class 0.5 1 3.5 5 5 5 7.5 7.5 10 10
Class 1 3.5 5 7.5 7.5 7.5 10 10 15 15
Class 3 5 7.5 10 10 10 15 15 20 20
VA Type TC062: Primary current, secondary 1A or 5A: size 30mm x 10mm
100A 125A 150A 200A 250A 300A 400A 500A 600A
Class 0.5 1.75 3.75 5 7.5 7.5 10 10 15 15
Class 1 3.75 7.5 7.5 10 10 10 10 15 20
Class 3 7.5 10 10 10 15 15 15 20 20
VA Type TC080: Primary current, secondary 1A or 5A: size 60mm x 12mm
400A 500A 600A 750A 800A 1000A 1200A 1500A 1600A
Class 0.5 5 7.5 10 15 15 15 15 15 15
Class 1 7.5 10 15 20 20 20 20 20 20
Class 3 15 20 25 25 30 30 30 30 30
VA Type TC120: Primary current, secondary 1A or 5A: size 100mm x 50mm
1500A 1600A 2000A 2500A 3000A 4000A
Class 0.5 15 15 15 20 30 35
Class 1 20 20 20 30 40 50
Class 3 30 30 30 40 60 60
11.2.2.1 Order details
We require the following information:
1. Model type: to suit busbar size
2. CT ratio
3. Class/VA: to suit the loading conditions
eg. TC120: 1500/5A: Class 0.5, 15VA
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11.3 TYPE 17x CURRENT TRANSFORMERS
11.3.1 Introduction to type 173
A range of moulded case current transformers suitable for primary currents from 1A to 800A using cable (24mm circular)or bar (30 mm x 10mm) primaries. They have secondary values of 1A or 5A.
11.3.2 Features
Transparent terminal covers Base or busbar mounting Screw or push on terminals
11.3.3 Technical specification
Conforms to: IEC44-1, IEC185 and BS7626 Rated system voltage: 0.72/3kV Ambient temperature range: -30 to +80 degrees C Self extinquishing to UL94V0 Enclosure to IP54
11.3.4 Range
CLASS 3 CLASS 1 CLASS 0.5 Primary A 2.5VA 5VA 10VA 15VA 2.5VA 5VA 10VA 15VA 2.5VA 5VA 10VA 15VA1, 2.5 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 5, 7.5 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 10, 15 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 20, 30 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 40 Yes 60 Yes 80 Yes Yes 100 Yes Yes Yes Yes 150 Yes Yes Yes Yes Yes Yes 200 Yes Yes Yes Yes Yes Yes Yes 300 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 400, 500 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 600, 800 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
11.3.5 Outline dimensions
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11.3.6 Introduction to type 174
A range of moulded case current transformers suitable for primary currents from 200A to 1200A using cable (35mm circular)or bar (40 mm x 10mm) primaries. They have secondary values of 1A or 5A.
11.3.7 Features
Transparent terminal covers Base or busbar mounting Screw or push on terminals
11.3.8 Technical specification
Conforms to: IEC44-1, IEC185 and BS7626 Rated system voltage: 0.72/3kV Ambient temperature range: -30 to +80 degrees C Self extinquishing to UL94V0 Enclosure to IP54
11.3.9 Range
CLASS 3 CLASS 1 CLASS 0.5
Primary A 2.5VA 5VA 10VA 15VA 2.5VA 5VA 10VA 15VA 2.5VA 5VA 10VA 15VA
200 Yes Yes
300 Yes Yes Yes Yes Yes Yes Yes
400, 500 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
600, 800 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1000,1200 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
11.3.10 Outline dimensions
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11.4 RT SPLIT CORE CURRENT TRANSFORMERS
11.4.1 Introduction to type RT
A range of ring type split core current transformers supplied with a 1 metre length flying lead. They are suitable for primary currents from 100A to 3000A with a standard 5A secondary
11.4.2 Features
Flying leads Split core allows installation without disconnecting cables
11.4.3 Technical specification
Conforms to: IEC185, BS7626, BSEN600044-1 and IEC 60044-1 Rated system voltage: 0.72/3kV Ambient temperature range: -30 to +80 degrees C Frequency range 50 60Hz Insulation level 3kV for 1 minute Continuous current 1.2 x rated current
11.4.4 Range and dimensions
Rating Dimension
Primary current A Burden VA A B C D
100A 1.5VA 32mm 88mm 12mm 35mm
150A 5VA 32mm 88mm 12mm 35mm
200A 5VA 32mm 88mm 12mm 35mm
300A 5VA 32mm 88mm 12mm 35mm
400A 5VA 45mm 95mm 12mm 30mm
500A 5VA 45mm 95mm 12mm 30mm
600A 5VA 45mm 95mm 12mm 30mm
800A 5VA 65mm 115mm 12mm 25mm
1000A 5VA 65mm 115mm 12mm 25mm
1200A 5VA 85mm 145mm 12mm 30mm
1250A 5VA 85mm 145mm 12mm 30mm
1500A 5VA 85mm 145mm 12mm 30mm
1600A 5VA 85mm 145mm 12mm 30mm
2000A 5VA 105mm 165mm 12mm 30mm
2500A 5VA 105mm 165mm 12mm 30mm
3000A 5VA 105mm 165mm 12mm 30mm
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11.4.5 Outline drawing
11.5 RT RING CORE CURRENT TRANSFORMERS
11.5.1 Introduction to type RT
A range of ring type Current transformers suitable for primary currents from 1A to 5000A with 1A or 5A secondaries. They are supplied with either resin coating or tape wrapped.
11.5.2 Features
Primary current 1A to 5000A Base or bus bar mounting Choice of sizes
11.5.3 Technical specification
Conforms to: IEC185, BS7626, and IEC 60044-1 Rated system voltage: 0.72/3kV Ambient temperature range: -30 to +80 degrees C Frequency range 50 60Hz Insulation level 3kV for 1 minute Continuous current 1.2 x rated current Short term terminal current Ith 60 x rated current
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11.5.4 Measurement
CLASS 3 CLASS 1 CLASS 0.5
Primary A 2.5VA 5VA 10VA 15VA 2.5VA 5VA 10VA 15VA 2.5VA 5VA 10VA 15VA
40 Yes Yes
50 Yes Yes Yes
60 Yes Yes Yes Yes
80 Yes Yes Yes Yes Yes
100 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
150 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
200 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
300 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
400 Yes Yes Yes
500 Yes Yes Yes
600 Yes Yes Yes Yes Yes Yes
800 Yes Yes Yes
1000 Yes Yes Yes
1200-1600 Yes Yes Yes
2000 Yes Yes Yes
3000 Yes Yes Yes
4500-5000 Yes Yes Yes
11.5.5 Protection
CLASS 5P10 CLASS 10P10
Primary A 5VA 10VA 15VA 20VA 5VA 10VA 15VA 20VA
100 Yes Yes
120 Yes Yes
150 Yes Yes Yes Yes
200 Yes Yes Yes Yes Yes Yes
300 Yes Yes Yes Yes Yes Yes
400 Yes Yes Yes Yes Yes Yes Yes Yes
500 Yes Yes Yes Yes Yes Yes Yes Yes
600 Yes Yes Yes Yes Yes Yes Yes Yes
800 Yes Yes Yes Yes Yes Yes Yes Yes
1000 Yes Yes Yes Yes Yes Yes Yes Yes
1200 Yes Yes Yes Yes Yes Yes Yes Yes
1600 Yes Yes Yes Yes Yes Yes Yes Yes
2000-2500 Yes Yes Yes Yes Yes Yes Yes Yes
3000-5000 Yes Yes Yes Yes Yes Yes Yes Yes
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11.5.6 Dimensions
Measurement Current Transformers
PROTECTION current transformers
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11.6 DC SHUNTS
11.6.1 Introduction
Shunts are used to enable measurements of dc currents in ranges from 1A to 15,000A (depending on the model) and also allow instruments to be located at a safe working distance. All shunts rated at under 25A are mounted on self extinquishing plastic base or on a 35mm rail to DIN EN500022 standard.
The shunts comply with EN60051 for measuring dc ammeters and dc power meters to accuracy class 1, 1.5 or 2.5.
11.6.2 Accuracy
Class 0.2 and 0.5 available to DIN 43703
11.6.3 Range
Current Rating 50mV 60mV 75mV 100mV 150mV 300mV
1, 1.5, 2.5, 4, 6, 10, 15 or 25A Case 1 Case 1 Case 1 Case 1 Case 1 Case 1
40, 60, 100 or 150A Case 1 Case 1 Case 1 Case 1 Case 1 Case 1
250, 400, 600 or 1000A Case 2 Case 2 Case 2 Case 2 Case 2 Case 2
1500A Case 2 Case 2 Case 2 Case 2 Case 3 Case 3
2000A Case 2 Case 2 Case 3 Case 3 Case 3 Case 3
2500A Case 2 Case 2 Case 3 Case 3 Case 3 Case 3
4000A Case 3 Case 3 Case 3 Case 3 Case 3 Case 3
6000A Case 3 Case 3 Case 3 Case 3 Case 3 N/a
10000A Case 3 Case 3 Case 3 Case 3 Case 3 N/a
15000A Case 3 Case 3 Case 3 Case 3 Case 3 N/a
11.6.4 Outline drawings
Case 1
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Case 2
Case 3
11.6.5 Dimensions
Dimensions
A1 A2 B1 B2 B3 C1 C2 E H
Case 1
Minimum 90 28 20 - - 8 - 73 -
Maximum 385 33 25 - - 8 - 365 -
Case 2
Minimum 138 28 30 15 48 10 10 98 30
Maximum 450 33 120 30 60 10 10 240 60
Case 3
Minimum 158 28 90 15 31 15 10 115 60
Maximum 460 33 120 35 30 30 20 410 170
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11.7 PHASE SELECTOR SWITCH
11.7.1 Introduction
Series 12 phase selector switches are designed for use in conjunction with indicating voltmeters, ammeters and their associated current transformers for monitoring voltage or current in three phase circuits.
11.7.2 Types
Type Description
12-8151 Measures currents in 3 phase supply lines
12-8351 Measures voltages in 3 phase circuits without neutral
12-8357 Measures voltages in 3 phase circuits with neutral
11.7.3 Accessories
72mm2 DIN legend plates designed to suit Extended duty lables engraved as required
11.7.4 Features
16A rated Double break contacts Semi rapid notch mechanism Positive switch location 48mm2 bezel to match Standard DIN and Metrik instruments Legend plates and duty labels Optional:
Recessed terminals for safety Switch block sealing to IP40
11.7.5 Technical details
Parameter Value
Rated operating voltage 600V
Rated operating current 16A
Rated thermal current 20A
Rated short duration (1 sec) current 300A
Mechanical life 1.25 x 108 operations, maximum 150 per hour
Normal operating temperature -20 to +70 degrees C
Degree of protection IP40 to IEC60144
Terminals (recessed) M3.5 screws and U clamp
Terminals (capacity) Up to 4mm2 solid connectors
Up to 2.5mm2 flexible cable
11.7.6 Standards
Standards: VDE 0660, IEC 60408
Approvals: CSA, UL, Bureau Veritas
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11.7.7 Ordering information
Specify switch type required and any accessories needed.
11.7.8 Outline and dimensions
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11.7.9 Switch drawings
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PXXX Product Description
GRID
Alstom Grid - ALSTOM 2011. ALSTOM, the ALSTOM logo and any alternative version thereof are trademarks and service marks of ALSTOM. The other names mentioned, registered or not, are the property of their respective companies. The technical and other data contained in this document is provided for information only. Neither ALSTOM, its officers or employees accept responsibility for, or should be taken as making any representation or warranty (whether express or implied), as to the accuracy or completeness of such data or the achievement of any projected performance criteria where these are indicated. ALSTOM reserves the right to revise or change this data at any time without further notice. Alstom Grid Worldwide Contact Centre www.alstom.com/grid/contactcentre/ Tel: +44 (0) 1785 250 070 www.alstom.com
Metrik Analogue Front Cover TemplateCover pagemtrka_enm_C1. SAFETY SECTION1.1 Health and Safety1.2 Explanation of symbols and labels
2. INSTALLING, COMMISSIONING AND SERVICING3. EQUIPMENT OPERATING CONDITIONS3.1 Current transformer circuits3.2 External resistors3.3 Battery Replacement3.4 Insulation and dielectric strength testing3.5 Insertion of modules and pcb cards3.6 Fibre optic communication
4. OLDER PRODUCTS5. DECOMMISSIONING AND DISPOSAL6. TECHNICAL SPECIFICATIONS6.1 Protective fuse rating
7. INTRODUCTION8. TECHNICAL INFORMATION8.1 METRIK A (AMMETERS) 8.1.1 Moving Iron 8.1.2 Moving Coil 8.1.3 Rectified Moving Coil
8.2 METRIK C (METER RELAYS) 8.3 METRIK D (DIFFERENTIAL METER) 8.3.1 Differential instruments8.3.2 Dual value instruments
8.4 METRIK F (FREQUENCY METERS) 8.4.1 Pointer instruments8.4.2 Reed instruments
8.5 METRIK M (MAXIMUM DEMAND AMMETERS) 8.5.1 Maximum demand ammeters
8.6 METRIK P (POWER FACTOR METERS) 8.7 METRIK PSI (PHASE SEQUENCE INDICATORS) 8.8 METRIK R (VARMETERS) 8.9 METRIK S (SYNCHRONISING METER) 8.9.1 Electronic meters8.9.2 Electro-mechanical meters
8.10 METRIK T (TIME ELAPSE/HOURS RUN) 8.11 METRIK V (VOLTMETERS) 8.11.1 Moving Iron8.11.2 Moving Coil8.11.3 Rectified Moving Coil
8.12 METRIK W (WATTMETERS)
9. INSTRUMENT NOMENCLATURE9.1 METRIK A ammeters9.2 METRIK C meter relays 9.3 METRIK D Differential Instruments 9.4 METRIK F frequency meters9.5 METRIK M maximum demand meter9.6 METRIK P Phase Angle meters9.7 METRIK PSI Phase Sequence Indication9.8 METRIK R Varmeters9.9 METRIK S Synchronising Instruments9.10 METRIK T time elapse/hours run9.11 METRIK V Voltmeters9.12 METRIK W Wattmeters
10. WIRING DIAGRAMS10.1 ST/SM SYNCHRONISING METERS10.2 SL SYNCHRONISING METERS10.3 P, R AND W POWER METERS
11. INSTRUMENTATION ACCESSORY11.1 TA SERIES MOULDED CASE CURRENT TRANSFORMERS11.1.1 Introduction11.1.1.1 Application11.1.1.2 Aperature size11.1.1.3 VA RATING
11.1.2 CT selection tables11.1.3 Technical details11.1.3.1 Linearity11.1.3.2 Accuracy11.1.3.3 Order details
11.2 TC SERIES NARROW WIDTH CURRENT TRANSFORMERS11.2.1 Introduction11.2.1.1 Application11.2.1.2 Aperature size11.2.1.3 VA rating
11.2.2 CT selection tables11.2.2.1 Order details
11.3 TYPE 17x CURRENT TRANSFORMERS11.3.1 Introduction to type 17311.3.2 Features11.3.3 Technical specification11.3.4 Range11.3.5 Outline dimensions11.3.6 Introduction to type 17411.3.7 Features11.3.8 Technical specification11.3.9 Range11.3.10 Outline dimensions
11.4 RT SPLIT CORE CURRENT TRANSFORMERS11.4.1 Introduction to type RT11.4.2 Features11.4.3 Technical specification11.4.4 Range and dimensions11.4.5 Outline drawing
11.5 RT RING CORE CURRENT TRANSFORMERS 11.5.1 Introduction to type RT11.5.2 Features11.5.3 Technical specification11.5.4 Measurement11.5.5 Protection11.5.6 Dimensions
11.6 DC SHUNTS11.6.1 Introduction11.6.2 Accuracy11.6.3 Range11.6.4 Outline drawings11.6.5 Dimensions
11.7 PHASE SELECTOR SWITCH11.7.1 Introduction11.7.2 Types11.7.3 Accessories11.7.4 Features11.7.5 Technical details11.7.6 Standards11.7.7 Ordering information11.7.8 Outline and dimensions11.7.9 Switch drawings
TM_BackCover