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DRY TYPE TRANSFORMERS Single Phase Isolation Transformers...........A1 Three Phase Isolation Transformers............A2 Autotransformers..........................................A3 Energy Efficient Transformers.....................A5 Electrostatically Shielded Transformers.....A6 Non-Linear Load Transformers....................A7 Drive Isolation Transformers.......................A8 Transformer Construction............................A9 Easy Selection Guide..................................A10 Catalogue Numbering System...................A11

Dry Type Transformers

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Page 1: Dry Type Transformers

A1

DRY TYPE TRANSFORMERS

Single Phase Isolation Transformers...........A1

Three Phase Isolation Transformers............A2

Autotransformers..........................................A3

Energy Efficient Transformers.....................A5

Electrostatically Shielded Transformers.....A6

Non-Linear Load Transformers....................A7

Drive Isolation Transformers.......................A8

Transformer Construction............................A9

Easy Selection Guide..................................A10

Catalogue Numbering System...................A11

Page 2: Dry Type Transformers

A1

Single Phase Isolation (Double-Wound) Transformers

Isolation transformers should be used on all systems which require grounding of the load. Pioneer Electric single phase distribution transformers are ideal for supplying auxiliary lighting circuits from 600V and lower supplies as well as electric heating equipment.

• General purpose ventilated steel enclosure suitable for indoor, dry locations. After fabrication, all metal is finished in ASA 61 gray powder coating suitable for most industrial and commercial installations.

• Transformers rated up to 75 KVA may be readily hung on H-columns, walls, shelves, or floor mounted to suit each installation. Most units have lifting lugs, conduit KOs, and a removable front cover for convenient access to terminals.

• Transformers rated above 75 KVA are suitable for floor or platform mounting and come complete with integral lifting lugs and removable front panels for convenient access to terminals.

• Transformer terminations rated below 330 amps are supplied with suitable hardware and lugs for cable connection. Terminations above 330 amps are supplied with terminal pads only.

• Primary windings have full capacity taps for supply voltage compensation and split secondaries for flexibility.

• Class 220 insulation used throughout.

• CSA certified and UL listed.

Applications

Features

KVACatalog No.

TapsEnclosure Dim. (in.)

Weight (lbs.)Al Windings

600V-120V/240VAl Windings

480V-120V/240VCu Windings

600V-120V/240VCu Windings

480V-120V/240V Length Depth Height

5 N/A N/A SC5JK/Z SC5HK/Z 0 11.00 11.00 14.25 807.5 N/A N/A SC7.5JK/Z SC7.5HK/Z 5% 15.75 16.00 21.00 10010 N/A N/A SC10JK/Z SC10HK/Z 5% 15.75 16.00 21.00 11015 SA15JK/Z SA15HK/Z SC15JK/Z SC15HK/Z 5% 15.75 16.00 21.00 15525 SA25JK/Z SA25HK/Z SC25JK/Z SC25HK/Z 2 x 2.5% 20.50 20.75 26.25 221

37.5 SA37JK/Z SA37HK/Z SC37JK/Z SC37HK/Z 2 x 2.5% 20.50 20.75 26.25 32550 SA50JK/Z SA50HK/Z SC50JK/Z SC50HK/Z 2 x 2.5% 20.50 20.75 26.25 36575 SA75JK/Z SA75HK/Z SC75JK/Z SC75HK/Z 2 x 2.5% 24.50 22.00 31.50 540

100 SA100JK/Z SA100HK/Z SC100JK/Z SC100HK/Z 2 x 2.5% 30.75 29.75 31.75 720150 SA150JK/Z SA150HK/Z SC150JK/Z SC150HK/Z 2 x 2.5% 40.00 37.00 45.75 998167 SA167JK/Z SA167HK/Z SC167JK/Z SC167HK/Z 2 x 2.5% 40.00 37.00 45.75 1080250 SA250JK/Z SA250HK/Z SC250JK/Z SC250HK/Z 2 x 2.5% 40.00 37.00 45.75 1370

Typical Electrical and Tap Configurations:

DRY TYPE TRANSFORMERS

H2

H2 H2

H4 H4

H6 H5 H3

H3 H1

H1

H1

UP TO 3KVA 5KVA TO 10KVA

TAP CONNECTIONSH1-H2 95%H2-H3 100%H3-H4 105%

15KVA AND UP

X1 X1

X2

X3

X4

X1

X3

X2

X4X4

X3

X2

TAP CONNECTIONSH1-H2 95%H2-H3 97.5%H3-H4 100%H4-H5 102.5%H5-H6 105%

Page 3: Dry Type Transformers

A2

Three Phase Isolation (Double-Wound) Transformers

Designed for indoor installations in hotels, schools, factories, industrial, and commercial buildings where a reliable power source is required for lighting and other low voltage equipment and machinery.

• Other primary and secondary voltages available.

• All enclosures listed are indoor type. Outdoor enclosures available, refer to factory.

• All dimensions are subject to change and should not be used for construction purposes. Certified drawings provided upon request.

• Shipping weights are approximate. Actual weights may be higher due to packaging and crating.

Applications Features

Notes

Typical Electrical and Tap Configurations:

KVACatalog No.

TapsEnclosure Dim. (in.)

Weight (lbs.)Cu Windings

600Δ - 208Y/120 Cu Windings

480Δ - 208Y/120Cu Windings

416Δ - 208Y/120Cu Windings600Y - 240Δ Length Depth Height

3 BC3JM/Z BC3HM/Z BC3GM/Z BC3QC/Z - 11.00 11.00 14.25 856 BC6JM/Z BC6HM/Z BC6GM/Z BC6QC/Z ±5% 15.75 16.00 21.00 1309 BC9JM/Z BC9HM/Z BC9GM/Z BC9QC/Z ±5% 15.75 16.00 21.00 143

15 BC15JM/Z BC15HM/Z BC15GM/Z BC15QC/Z ±5% 20.50 16.00 21.00 18830 BC30JM/Z BC30HM/Z BC30GM/Z BC30QC/Z ±2.5%, ±5% 20.50 20.75 26.25 29845 BC45JM/Z BC45HM/Z BC45GM/Z BC45QC/Z ±2.5%, ±5% 20.50 20.75 26.25 36075 BC75JM/Z BC75HM/Z BC75GM/Z BC75QC/Z ±2.5%, ±5% 24.50 22.00 31.50 515

112 BC112JM/Z BC112HM/Z BC112GM/Z BC112QC/Z ±2.5%, ±5% 30.75 29.75 31.75 780150 BC150JM/Z BC150HM/Z BC150GM/Z BC150QC/Z ±2.5%, ±5% 30.75 29.75 31.75 970225 BC225JM/Z BC225HM/Z BC225GM/Z BC225QC/Z ±2.5%, ±5% 40.00 37.00 45.75 1460300 BC300JM/Z BC300HM/Z BC300GM/Z BC300QC/Z ±2.5%, ±5% 40.00 37.00 45.75 1835

• Using computer aided design techniques and modern materials, Pioneer Electric engineers have created a range of highly efficient transformers having long trouble-free life with reduced weight, size, and cost.

• Ventilation openings in the enclosure are coordinated with the cooling ducts in the coils to ensure proper natural circulation of the cooling air for long life and minimum losses.

• General purpose ventilated steel enclosure, suitable for indoor locations. After fabrication, the enclosures are finished in ASA 61 gray powder coating suitable for most industrial and commercial installations.

• Transformers rated up to 75 KVA may be readily hung on H-columns, walls, shelves, or floor mounted to suit each installation. All units have lifting lugs, conduit KOs, and a removable front cover for convenient access to terminals.

• Transformers rated 112.5 - 300 KVA are suitable for floor or platform mounting and come complete with integral lifting lugs as well as removable top, front, and rear panels for convenient access to terminals.

• Transformer terminations rated below 330 amps are supplied with suitable hardware and lugs for cable connection. Terminations above 330 amps are supplied with terminal pads only.

• Class 220 insulation used throughout.

• CSA certified and UL listed.

DRY TYPE TRANSFORMERS

H2

H2

H3

H3

H1

H1

X3

X3

X1

X1

X0

X2

X2 TAP CONNECTIONS 2 ±5%

TAP CONNECTIONS 4 ±2.5%

DELTA PRIMARY4 WIRE WYE SECONDARY

WYE PRIMARY (NO NEUTRAL CON.)DELTA SECONDARY

105%100% 95%

105%102.5% 100% 97.5% 95%

Page 4: Dry Type Transformers

A3

Autotransformers

Autotransformers are an economical and compact means of connecting electrical equipment to a power supply of a different voltage. Part of the winding is common to both primary and secondary circuits so there is no isolation between the two. This may not be acceptable on some power systems which do not have a grounded neutral on the secondary side of the main power transformer. Typical applications include motor loads of industrial machinery, electric heating, air conditioners, etc.

Applications Features

KVA

600V - 480V, 60Hz 480V - 240V, 60Hz 240V - 208V, 60Hz 240V - 120V, 50/60Hz

Cat. No.Encl.

Size

Weight

(lbs.)Cat. No.

Encl.

Size

Weight

(lbs.)Cat. No.

Encl.

Size

Weight

(lbs.)Cat. No.

Encl.

Size

Weight

(lbs.)3 MC3JH #0 8.00 MC3HC #1 40 MC3CB #0 20 MC3CA/50 #1 405 MC5JH #0 10.00 MC5HC #1 60 MC5CB #0 25 MC5CA/50 #1 55

7.5 MC7H #1 10.00 MC7HC #1 80 MC7CB #1 30 MC7CA/50 #1 7510 MC10JH #1 10.00 MC10HC #2 90 MC10CB #1 35 M10CA/50 #2 9015 MC15JH #1 14.25 MC15HC #2 110 MC15CB #1 45 MC15CA/50 #2 11025 MC25JH #2 14.25 MC25HC #4 150 MC25CB #2 60 MC25CA/50 #4 150

37.5 MC37JH #2 21.00 MC37HC #4 200 MC37CB #2 90 MC37CA/50 #4 20050 MC50JH #4 26.25 MC50HC #6 235 MC50CB #4 130 MC50CA/50 #6 23575 MC75JH #4 26.25 MC75HC #6 275 MC75CB #4 165 MC75CA/50 #6 275

100 MC100JH #4 31.50 MC100HC #6 315 MC100CB #4 200 MC100CA/50 #6 315150 MC150JH #6 31.50 MC150HC #7 345 MC150CB #4 240 MC150CA/50 #7 345

Single Phase Autotransfomers

Enclosure Dimensions

Typical Three Phase Electrical Configuration

Size No. Length Depth Height0 9.50 7.00 8.001 12.00 9.00 10.002 11.00 11.00 14.253 15.50 11.00 14.254 15.75 16.00 21.005 20.50 16.00 21.006 20.50 20.75 26.257 24.50 22.00 31.508 30.75 29.75 31.759 40.00 37.00 45.75

10 46.00 40.00 64.5011 60.00 45.00 69.0012 73.00 45.00 78.00

• Performs same function as an isolation transformer of same KVA and voltage rating without the isolation feature.

• Generally radiates less noise than equivalent isolation transformer.

• All terminals are clearly identified and easy to connect.

• May be used in either step-up or step-down configurations.

• Low regulation; less than 3%.

• General purpose ventilated steel enclosure, suitable for indoor locations. After fabrication, the enclosures are finished in ASA 61 gray powder coating suitable for most industrial and commercial installations.

• Transformers in up to #7 enclosures may be readily hung on H-columns, walls, shelves, or floor mounted to suit each installation. All units have lifting lugs, conduit KOs, and a removable front cover for convenient access to terminals.

• Transformers in #8 or larger enclosures are suitable for floor or platform mounting and come complete with integral lifting lugs as well as removable top, front, and rear panels for convenient access to terminals.

• Transformer terminations rated below 330 amps are supplied with suitable hardware and lugs for cable connection. Terminations above 330 amps are supplied with terminal pads only.

• Class 220 insulation used throughout.

• CSA certified and UL listed.

DRY TYPE TRANSFORMERS

HV(H1)

LV(X1)

LV(X2)LV(X3)

HV(H2)HV(H3)

Page 5: Dry Type Transformers

A4

KVA Catalog No. Enclosure SizeWeight

(lbs.)3 RC3JH #1 216 RC6JH #1 349 RC9JH #3 45

15 RC15JH #3 6530 RC30JH #5 11545 RC45JH #6 13575 RC75JH #6 200

112 RC112JH #7 225150 RC150JH #7 265225 RC225JH #8 450300 RC300JH #9 525

KVA Catalog No. Enclosure SizeWeight

(lbs.)3 RC3CB #0 186 RC6CB #0 219 RC9CB #1 30

15 RC15CB #1 5230 RC30CB #3 7045 RC45CB #3 12575 RC75CB #5 135

112 RC112CB #5 180150 RC150CB #6 200225 RC225CB #6 240300 RC300CB #7 300

KVA Catalog No. Enclosure SizeWeight

(lbs.)3 RC3HC #1 656 RC6HC #1 859 RC9HC #3 110

15 RC15HC #3 12530 RC30HC #5 20045 RC45HC #5 22575 RC75HC #6 325

112 RC112HC #7 450150 RC150HC #7 550225 RC225HC #8 675300 RC300HC #8 900

KVA Catalog No. Enclosure SizeWeight

(lbs.)3 RC3JC #1 406 RC6JC #1 759 RC9JC #3 120

15 RC15JC #3 15530 RC30JC #5 22545 RC45JC #6 26575 RC75JC #6 400

112 RC112JC #7 550150 RC150JC #7 610225 RC225JC #8 970300 RC300JC #9 1300

KVA Catalog No. Enclosure SizeWeight

(lbs.)3 RC3JB #1 456 RC6JB #1 709 RC9JB #3 130

15 RC15JB #3 13030 RC30JB #5 21045 RC45JB #6 25075 RC75JB #6 360

112 RC112JB #7 555150 RC150JB #8 650225 RC225JB #8 920300 RC300JB #9 1330

KVA Catalog No. Enclosure SizeWeight

(lbs.)3 RC3HB #1 656 RC6HB #1 859 RC9HB #3 110

15 RC15HB #3 13030 RC30HB #5 20045 RC45HB #5 22575 RC75HB #6 325

112 RC112HB #7 450150 RC150HB #7 550225 RC225HB #8 675300 RC300HB #8 900

600Y PRIMARY VOLTS - 480Y SECONDARY VOLTS, 3Ø

240Y PRIMARY VOLTS - 208Y SECONDARY VOLTS, 3Ø

480Y PRIMARY VOLTS - 240Y SECONDARY VOLTS, 3Ø

600Y PRIMARY VOLTS - 240Y SECONDARY VOLTS, 3Ø

600Y PRIMARY VOLTS - 208Y SECONDARY VOLTS, 3Ø

480Y PRIMARY VOLTS - 208Y SECONDARY VOLTS, 3Ø

• Other primary and secondary voltages available.

• Standard units do not have primary taps. Taps available on special order, refer to factory.

• All enclosures listed are indoor type. Outdoor enclosures available, refer to factory.

• All dimensions are subject to change and should not be used for construction purposes. Certified drawings provided upon request.

Notes

DRY TYPE TRANSFORMERS

Page 6: Dry Type Transformers

A5

Energy Efficient Transformers (e-RatedTM)

As energy prices rise, it is imperative to reduce the operating costs of electrical systems. All transformers have losses that appear in the form of heat. Transformers designed for temperature rises of 80°C or 115°C and with the special grade core steel will operate at lower than normal losses. Therefore, have greater life expectancy, lower operating costs, and significantly enhanced overload capabilities.

Core Losses: Are mainly caused by the resistance of the iron core to the magnetic flux magnetizing it. These losses can be reduced by lowering the flux density, using higher grade steel, special construction, and exacting assembly techniques. In most cases, the core loss has the greater effect on total losses. Since core losses are present at all times when the transformer is energized while load losses are proportional to transformer load.

Load Losses: Are caused primarily by the resistance of the winding conductors to the current which flows through them. These losses can be reduced by lowering the resistance of the windings and by lowering the temperature rise of the unit.

Total Losses = Core Loss + (%Load2 X Winding Loss)

Applications

Transformer Losses

Features

KVA115°C Temp. Rise, 600V - 120Y208V 80°C Temp. Rise, 600V - 120Y208V

Cat. No. TapsEnclosure

Size

Weight

(lbs.)Cat. No. Taps

Enclosure

Size

Weight

(lbs.)3 BC3JM/T115 - #4 105 BC3JM/T80 - #4 1206 BC6JM/T115 ±5% #4 135 BC6JM/T80 ±5% #4 1609 BC9JM/T115 ±5% #5 168 BC9JM/T80 ±5% #5 185

15 BC15JM/T115 ±5% #6 230 BC15JM/T80 ±5% #6 26030 BC30JM/T115 ±2.5%, ±5% #6 290 BC30JM/T80 ±2.5%, ±5% #7 36045 BC45JM/T115 ±2.5%, ±5% #7 430 BC45JM/T80 ±2.5%, ±5% #8 50075 BC75JM/T115 ±2.5%, ±5% #8 610 BC75JM/T80 ±2.5%, ±5% #9 780

112 BC112JM/T115 ±2.5%, ±5% #9 920 BC112JM/T80 ±2.5%, ±5% #9 1140150 BC150JM/T115 ±2.5%, ±5% #9 1230 BC150JM/T80 ±2.5%, ±5% #9 1460225 BC225JM/T115 ±2.5%, ±5% #9 1650 BC225JM/T80 ±2.5%, ±5% #9 1850300 BC300JM/T115 ±2.5%, ±5% #10 2600 BC300JM/T80 ±2.5%, ±5% #10 2800

Energy Efficient Transfomers

Enclosure DimensionsSize No. Length Depth Height

0 9.50 7.00 8.001 12.00 9.00 10.002 11.00 11.00 14.253 15.50 11.00 14.254 15.75 16.00 21.005 20.50 16.00 21.006 20.50 20.75 26.257 24.50 22.00 31.508 30.75 29.75 31.759 40.00 37.00 45.75

10 46.00 40.00 64.5011 60.00 45.00 69.0012 73.00 45.00 78.00

To meet NEMA TP-1 and CSA C802 transformer efficiency standards, transformer cores are made with higher grade silicon steel, constructed with special miter arrangements, and utilize winding conductors that have lower resistance to reduce losses.

Pioneer Electric e-RatedTM transformers meet or exceed TP-1 and C802 requirements. In addition, if the transformers are operating at a temperature rise of 80°C or 115°C they will have approximately 35% and 20% lower losses, respectively compared to conventional 150°C rise units.

An additional benefit of Pioneer Electric e-RatedTM transformers is their enhanced overload capability. e-RatedTM transformers with 80°C or 115°C temperature rise can be operated at 150°C and yield overload capability of 30% or 15% without reducing life expectancy or service reliability.

DRY TYPE TRANSFORMERS

Page 7: Dry Type Transformers

A6

Electrostatically Shielded Transformers

Electrostatically (faraday) shielded transformers are designed to protect sensitive electrical equipment and electronic devices and systems from high frequency voltages (electrical noise) or transients that occur due to switching and loading on distribution lines.

Electrical noise and transients are classified in two ways:

Normal mode: Noise which appears between the hot and neutral current carrying conductors.

Common mode: Noise which appears between the ground wire, hot, and neutral current carrying conductors.Common mode noise is more prevalent and should be the key criterion for any noise suppression device.

The shielded transformer suppresses common mode noise by introducing a grounded shield between its primary and secondary windings. The grounded shield provides a low resistance path to ground by the effect of capacitive coupling which prevents high frequency signals present in the source voltage from reaching the secondary of the transformer and subsequently the connected load.

The electrostatic shield will not perform any function with regard to harmonic current or voltage distrotion of waveforms. By redirecting unwanted commom mode electrical noise and transients generated on the source side of the transformer to ground the shield is extremely valuable in protecting sensitive equipment connected to the transformer output.

The ratio of the common mode noise attenuation on the input to that of the output is expressed in Decibels (dB).

Isolation transformers with electrostatic shields installed can have input to output noise ratios within the range of 10:1 to 1,000,000 or higher.

• Hospital operating rooms and X-ray equipment

• Computer installations

• Data processing

• Programmable controllers

• Instrumentation

Electral Noise

Electrostatic Shielding

Applications Features

Three Phase Isolation Transformer Shield

Common Mode Noise Attenuation

Minimum(dB)

Range(dB) Ratio Range

No Shield 12 12 - 20 10:1Single Shield 50 50 - 65 1000:1

Double Shield 65 65 - 90 10,000:1Triple Shield 90 90 - 120 100,000:1

Ultra Isolating 120 120 - 150 1,000,000:1

Shielded Transformer

Dirty power with noise and spikes into the shielded transformer

Clean power out of the shielded transformer

Ground

WindingCapacitance

ProtectedLoad

Primary

Secondary

• Shielded transformers are available with copper or aluminum windings.

• Knock outs provided for simplified wiring.

• General purpose ventilated steel enclosure, suitable for indoor locations. After fabrication, the enclosures are finished in ASA 61 gray powder coating suitable for most industrial and commercial installations.

• Transformers rated up to 75KVA may be readily hung on H-columns, walls, shelves, or floor mounted to suit each installation. All units have lifting lugs, conduit KOs, and a removable front cover for convenient access to terminals.

• Transformers rated above 75KVA are suitable for floor or platform mounting and come complete with provisions for lifting as well as removable top, front, and rear panels for convenient access to terminals.

• Internal ground lugs.

• Class 220 insulation used throughout.

• CSA certified and UL listed.

DRY TYPE TRANSFORMERS

Page 8: Dry Type Transformers

A7

Non-Linear Load Transformers (K-Factor Rated)

Today`s modern electronic, electrical components, and circuitry such as computers, copiers, printers, fax machines and display terminals utilize switching mode power supplies for their operation. These switching mode power supplies are non-linear in nature and cause significant power system problems:

• Circuit breakers and fuses blowing far below their cur-rent ratings.

• Neutrals in transformers and panelboards are much hotter than their ratings.

• Distribution transformers are overheating even when operating well within their specified nameplate ratings.

These problems are the result of harmonics. Solid state switching elements such as SCR`s, transistors, and capacitors which are found in computers, fax machines, energy efficient ballasts, etc. continuously switch on and off producing non-linear or non-sinusoidal wave shapes in the current supplied from the power source.

A linear load uses current from the power source continuously over the sinusoidal cycle. A non-linear load uses current in large pulses from the power source which creates harmonic distortion.

Harmonic components are represented by periodic waves that have a frequency that is a multiple of the fundamental frequency. Harmonic frequencies superimpose themselves upon the fundamental waveform distorting it and changing the magnitude.

Applications Effects on TransformersThe major components in the harmonic currents of switching mode power supplies are the third and fifth harmonics. Harmonics which are multiples of 3 such as the 3rd, 6th, 9th, etc. are called triplen harmonics. When triplen harmonics are present in a three phase system they add together in the neutral conductor. Third harmonics result in a high 180Hz current flowing through the transformer neutral terminal. The core steel of the transformer has stray losses which will increase dramatically with harmonic distortion. These effects cause the transformers to operate at significantly higher temperatures.

Effects of Harmonic Components on the Sinusoidal Cycle

Distorted Non-Linear Wave = Fundamental + 3rd Harmonic + 5th Harmonic

K - RatingsA K-factor rating applied to a transformer is an index of the transformers ability to supply harmonic content in its load current while operating within its temperature limits.

For dry-type transformers a K-factor calculation is made to determine the amount of harmonic content present in a power system. K-rated transformers are sized to handle 100% of the fundamental 60Hz load plus the non-linear load specified. The neutral of the transformer is sized at 200% of the current rating of the phase connections.

Selecting Transformer K-Rating Based on Load Type:

K-factor 1: Motors Incandescent Lighting Resistance Heating Motor Generators (without solid state drives)

K-factor 4: HID Lighting Induction Heaters Welders UPS with optional input filtering PLC’s and Solid-State Drives

K-factor 13: Multiple receptacle circuits in health facilities UPS without input filtering Production or assembly line equipment Facilities and classrooms of schools

K-factor 20: SCR variable speed drives Circuits with data processing equipment Main-frame computers Critical care areas and hospital operating rooms

Pioneer Electric can calculate and provide K-factor ratings of any magnitude when harmonic values are given.

DRY TYPE TRANSFORMERS

Page 9: Dry Type Transformers

A8

Drive Isolation Transformers (DIT)

Pioneer Electric drive isolation transformers are specifically designed to meet the requirements of AC and DC variable speed drives or rectifier outputs. Pioneer Electric DIT type transformers are manufactured and rated to match stan-dard motor horsepower and voltage ratings.

Applications Features• Anticipating that harmonics generated by the

rectifiers will be present, the steel core is increased to operate the transformer at a lower flux density to prevent saturation.

• Standard K-factor 4 rating. All K-factor ratings are available.

• Available in either high quality copper or aluminum windings.

• Braced to withstand the mechanical stresses of the current reversals and short circuits associated with SCR drives.

• Isolates the power source from the low frequency noise generated by SCR voltage spikes and transient feedback.

• Reduces short circuit currents.

• Lower than normal losses and temperature rise for greater life expectancy and overload capability.

• Full current neutral.

• Standard taps supplied, ± 5% FCAN and FCBN or ±2 x 2-1/2% FCAN and FCBN

• Thermal protectors (thermostats) for over temperature tripping are supplied standard.

• Class 220 insulation used throughout.

• CSA certified and UL listed.

Drive Rating (H.P.)

Recommended Transformer

Size (DIT)

Catalog No. Enclosure Dim. (in.)Weight

(lbs.)Al Windings575Δ - 460Y/266

Al Windings460Δ - 460Y/266

Al Windings460Δ - 230Y/133

Al Windings230Δ - 230Y/133 Length Depth Height

5 8 DA8J1P1 DA8H1P1 DA8H1S1 DA8C1S1 15.75 16.00 21.00 1358 11 DA11J1P1 DA11H1P1 DA11H1S1 DA11C1S1 15.75 16.00 21.00 150

10 14 DA14J1P1 DA14H1P1 DA14H1S1 DA14C1S1 20.50 16.00 21.00 18215 20 DA20J1P1 DA20H1P1 DA20H1S1 DA20C1S1 20.50 20.75 26.25 24720 27 DA27J1P1 DA27H1P1 DA27H1S1 DA27C1S1 20.50 20.75 26.25 27525 34 DA34J1P1 DA34H1P1 DA34H1S1 DA34C1S1 20.50 20.75 26.25 31030 40 DA40J1P1 DA40H1P1 DA40H1S1 DA40C1S1 20.50 20.75 26.25 33640 51 DA51J1P1 DA51H1P1 DA51H1S1 DA51C1S1 24.50 22.00 31.50 45550 63 DA63J1P1 DA63H1P1 DA63H1S1 DA63C1S1 24.50 22.00 31.50 48560 75 DA75J1P1 DA75H1P1 DA75H1S1 DA75C1S1 24.50 22.00 31.50 56575 93 DA93J1P1 DA93H1P1 DA93H1S1 DA93C1S1 30.75 29.75 31.75 755

100 118 DA118J1P1 DA118H1P1 DA118H1S1 DA118C1S1 30.75 29.75 31.75 820125 145 DA145J1P1 DA145H1P1 DA145H1S1 DA145C1S1 30.75 29.75 31.75 890150 175 DA175J1P1 DA175H1P1 DA175H1S1 DA175C1S1 40.00 37.00 45.75 1250200 220 DA220J1P1 DA220H1P1 DA220H1S1 DA220C1S1 40.00 37.00 45.75 1470250 275 DA275J1P1 DA275H1P1 DA275H1S1 DA275C1S1 40.00 37.00 45.75 1750300 330 DA330J1P1 DA330H1P1 DA330H1S1 DA330C1S1 40.00 37.00 45.75 1990400 440 DA440J1P1 DA440H1P1 DA440H1S1 DA440C1S1 46.00 40.00 64.50 2700

DRY TYPE TRANSFORMERS

Page 10: Dry Type Transformers

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Transformer Construction

• All Pioneer Electric three phase transformers utilize three legged cores

• Only high quality grain oriented silicon steel is used

• Core steel is precision cut and stacked for reduced noise and losses

• Cores are clamped with heavy steel brackets

• Epoxy impregnated windings

• Epoxy cast coil designs

• 50 Hz designs (or other frequencies when specified)

• All non-standard voltages

• Special configurations: delta-delta, delta or wye zig-zag

• Special impedance designs

• Temperature sensing devices

• Multiple windings

• Special tap arrangements

• Low audible noise designs

• Tropicalization

• Special paint available upon request

• Anti-vibration pads: all transformers have standard internal vibration isolators; external pads are available

• Lightning and surge arrestors

• Non-sinusoidal load designs

• Optional tests are available

• Enclosures: NEMA and CSA

Type 2: ventilated, indoor, driproof (Pioneer Standard)

Type 3: ventilated indoor or outdoor weather resistant

Type 4: non-ventilated indoor or outdoor watertight (protection against splashing and hose directed water)

Type 12: non-ventilated indoor industrial dust-tight and driproof

• All coil windings are of high quality magnet wire (copper or aluminum is available)

• Class H 220°C insulation is utilized throughout the coil winding process

• All Pioneer Electric transformers are designed with substantial cooling ducts for effective cooling

• Every coil is impregnated and baked in polyester resin varnish

• Standard ±5% or ±2x2.5% taps are provided on all isolation type transformers

Pioneer Electric transformers are manufactured with insulating materials complying with CSA Winding Insulation System Class 220, which is the highest insulation level recognized by the transformer industry.

Pioneer Electric transformers are manufactured in accordance with the requirements of CSA Standard C22.2 No 47. Pioneer Electric transformers are CSA certified and UL listed.

All Pioneer Electric transformers are produced and tested in full compliance with the requirements of CSA Z299.3 and ISO 9002 quality assurance programs. All Pioneer Electric transformers are tested as per the requirements of CSA standard C9 M1981.

• Standard enclosures are constructed of heavy gauge steel

• Ventilation openings are arranged so that each standard enclosure is suitable for either NEMA or CSA type 1 or type 2 applications

• All enclosures are designed to minimize the possibility of accidental contact with live parts and to restrict the access of falling particles into the transformer

• All Pioneer Electric standard enclosures are finished in ASA 61 grey powder coating

Core

Available Options

Coils

Insulation System

Approval

Quality Assurance and Testing

Enclosure

DRY TYPE TRANSFORMERS

Page 11: Dry Type Transformers

A10

Easy Selection Guide

KVA 120V 240V 480V 600V

1 8.3 4.2 2.1 1.72 16.7 8.3 4.2 3.33 25.0 12.5 6.3 5.05 41.7 20.8 10.4 8.3

7.5 62.5 31.3 15.6 12.510 83.3 41.7 20.8 16.715 125.0 62.5 31.3 25.025 208.0 104.0 52.1 41.7

37.5 313.0 156.0 78.0 62.550 417.0 208.0 104.0 83.375 625.0 313.0 156.0 125.0

100 833.0 417.0 208.0 167.0150 1250.0 625.0 313.0 250.0

KVA 208V 240V 480V 600V

3 8.3 7.2 3.6 2.96 16.6 14.4 7.2 5.89 25.0 21.7 10.7 8.7

15 41.7 36.1 18.1 14.530 83.4 72.3 36.1 28.945 125 108 54.2 43.475 208 181 90.3 72.3

112.5 313 271 135 108150 417 361 181 145225 625 542 271 217300 834 723 361 289

Motor H.P. up to 0.5 1 1.5 2 3 5 7.5 10

Actual KVA Required 1.16 1.9 2.30 2.76 3.92 6.45 9.23 11.5Closest Standard KVA 2.0 3.0 3.0 3.0 5.0 7.5 10.0 15.0

Motor H.P. up to 2 3 5 7.5 10 15 20 25

Actual KVA Required 2.4 3.42 5.73 8.4 10.3 15.0 19.8 24.4Closest Standard KVA 3.0 6.0 6.0 9.0 15.0 15.0 30.0 30.0

1. Determine primary or supply voltage

2. Determine secondary or load voltage

3. Verify single phase operation

4. Standard transformers are suitable for operation on a 60 Hz system. Refer to factory for other frequencies.

5. Determine KVA rating of load. Select a transformer hav-ing a standard KVA rating equal to or greater than that required by the load.

6. Select autotransformer or double-wound isolation type. Formula for calculating single phase KVA: KVA = Volts x Amps

1. Determine primary or supply voltage

2. Determine secondary or load voltage

3. Verify three phase operation

4. Standard transformers are suitable for operation on a 60 Hz system. Refer to factory for other frequencies.

5. Determine KVA rating of load. Select a transformer having a standard KVA rating equal to or greater than that required by the load.

6. Select autotransformer or double-wound isolation type. Formula for calculating three phase KVA: KVA = Volts x Amps x 1.73

Steps for selecting required single phase transformer

Steps for selecting required three phase transformer

Line currents at rated voltage single phase

Line currents at rated voltage three phase

1000

1000

DRY TYPE TRANSFORMERS

Page 12: Dry Type Transformers

A11

Catalogue Numbering System

B C 30- - - - /

Type

Windings

KVA Designation

R - 3 Phase Autotransformers

M - 1 Phase Autotransformers

B - 3 Phase Isolation (Distribution)

S - 1 Phase Isolation (Distribution)

D - 3 Phase Drive Isolation

A - Aluminum Windings

C - Copper Windings

J M

Primary Voltage

Code

Primary Voltage

Code

Special Requirement

Blank - No Requirement

50 - 50 Cycles (Hz)

S - Electrostatic Shield

E - Special Enclosure

T - Special Temperature Rise

K - K-Factor Rated

P - Special Paint Finish

M - Special Mounting Brackets

Z - Energy Efficient

EP - Encapsulated Transformer

255075

100150200250350500750

1000150020003000

A - 120A1 - 115A2 - 110B - 208C - 240

C1 - 230C2 - 220D - 277E - 347F - 380G – 416G1 - 400H - 480

H1 - 460H2 - 440

J - 600J1 - 575J2 - 550

K - 120/240K1 - 115/230K2 - 110/220L - 240/480

L1 - 230/460L2 - 220/440M - 208Y/120N - 416Y/240

N1 - 400Y/231P - 480Y/277

P1 - 460Y/266P2 - 440Y/254Q - 600Y/347

Q1 - 575Y/332Q2 - 550Y/318R - 380Y/220S - 240Y/139

S1 - 230Y/133S2 - 220Y/127

X - Special

A - 120A1 - 115A2 - 110B - 208C - 240

C1 - 230C2 - 220D - 277E - 347F - 380G – 416G1 - 400H - 480

H1 - 460H2 - 440

J - 600J1 - 575J2 - 550

K - 120/240K1 - 115/230K2 - 110/220L - 240/480

L1 - 230/460L2 - 220/440M - 208Y/120N - 416Y/240

N1 - 400Y/231P - 480Y/277

P1 - 460Y/266P2 - 440Y/254Q - 600Y/347

Q1 - 575Y/332Q2 - 550Y/318R - 380Y/220S - 240Y/139

S1 - 230Y/133S2 - 220Y/127

X - Special

DRY TYPE TRANSFORMERS