PremsetMedium Voltage DistributionMaintenance Guide I 2013

15 kV compact modular vacuum switchgear with Shielded Solid Insulation System

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Installation & CommissioningBecause without these, you increase the risk of start-up delays and premature equipment failure.

Technical trainingHaving well-trained employees is key to the long-term health of your electrical distribution equipment.

On-demand maintenanceYou need to adopt the right best practices and minimise downtime, while working with limited budgetary and maintenance resources.

ModernisationAgeing, outdated equipment can be modernised, dramatically improvingits performance and lifetime, as well as achieving compliance with currentregulations.

End-of-lifeDispose of outdated equipment in a way that’s both green and transparent.

Installation assessmentFor a comprehensive assessment and a clear analysis of the results.

Maintenance Services ContractsTo prevent such issues, these contracts can focus on predictive and preventive maintenance that is specifically tailored to your site and processes.

End-of-life recyclingSchneider Electric Services has an operational subsidiary allowing youto recycle your medium voltage switchgear.

Premset Maintenance Guide Schneider Electric Services, by your side all day long

To learn more do not hesitate to visit our site Services/Electrical Distribution Services: www.schneider-electric.com

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Premset Maintenance Guide Premset, designed for a long service life

Premset Maintenance & Service program:1. Reduction of total cost of ownership and easy budget control• Optimized maintenance program according to the installation environment and operation conditions• Total budget control through services agreement 2. Improved availability & “best in class” life time of equipment• Preventive maintenance adapted to local operation conditions will ensure extended life time of the equipment• Specific predictive maintenance program, linked with the high technology design of Premset, will help to know and act before any serious failure

occurs (diagnostic of metallic painting, le diagnostic of ageing & circuit breaker …)These programs will contribute to the reduction of down time and critical loss and to the improved safety & security3. Peace of mind due to our reactivity commitment• Through our services agreement, we assure a total peace of mind: even a failure occurs, our Field Services Engineers will go on site within the

defined time in the agreement to fix the issue and change parts if needed.

Corrective maintenanceEmergency On-Site intervention• Guarantee Expert intervention on your site in a lead time which is defined by

a mutual agreement.• Diagnose problems, evaluate a solution and prepare the fixing.

Emergency spare parts delivery• Spare parts delivery lead time guaranteed.

Preventive maintenance

Premset Preventive maintenanceMV main circuit Core unit (encapsuled Vacuum interrup-

ter + earthing switch tank)Metallisation check-up to ensure earth continuity

Busbar + cable connection Earth continuity check-up

Mechanism Mechanism Recommended:- every 5 years (ideal

conditions)- every 3 years (standard

conditions)- every 2 years (agressive

conditions)1. Check open/close/charging2. Check humidity & corrosion

status of the mechanism

LV parts Auxiliary contacts Check the continuity of the contacts in different states

Coil & electrical operation Test tripping chain

Protection relays Refer to maintenance manual of VIP/Sepam or other relay

Other electronic devices Flair & PS100: battery check

CTs & VTs Shielded Metallisation check-up to ensure earth continuity

• The entire MV circuit of Premset is insensitive to harsh environment thanks to Shielded Solid Insulation. For LV parts, it is similar to current Air Insulated Switchgear module.

• No specific tools are required for preventive maintenance of Premset. • Mechanical parts are surface-treated to prevent corrosion.

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Contents

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4

Premset Maintenance Guide

General 5

Operations to be performed

Power circuits and control mechanisms 7

Low Voltage auxiliary circuits 8

Recommended frequency

Normal operating conditions 9

Specific stress conditions 11

Appendice

Emergency spare parts 13

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GeneralPremset Maintenance GuideP

M10

0020

WarningPreventive maintenance operations must be carried out regularly on medium-voltage equipment.

Technicians trained to work on this type of equipment are required. Two skills are essential: • electrical qualifications• knowledge of the equipment to be maintained. This document does not apply to protection relays. Please refer to the maintenance documents specific to each type of switchgear used. If necessary, you can also contact your Product, Country, Services agent.

Electrical qualificationsOnly employees with appropriate electrical qualifications will be allowed to carry out these maintenance operations.

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GeneralPremset Maintenance Guide

Different skill levels have been established to define the persons who are capable of working on medium-voltage equipment:

Level 1Regular maintenance. The maintenance operations to be carried out on the equipment are generally described in the instruction handbook.Minor preventive maintenance operations not requiring disassembly and standard repairs that require one part to be replaced with another provided for this purpose, performed by an operator’s accredited technician according to the manufacturer’s maintenance instructions.

Level 2Operations requiring simple procedures and/or support equipment (integrated into devices or external) that is easy to use and implement.

Level 3Preventive maintenance operations, such as general adjustment, identification and troubleshooting, repairs requiring the replacement of one component or functional unit with another or minor mechanical repairs, carried out by a specialised technician using the tools, adjusting and measuring instruments specified in the manufacturer’s maintenance instructions.

Level 4Operations whose procedures involve knowledge of a particular technique or technology and/or how to use specialised support equipment. All important corrective or preventive maintenance operations carried out by the manufacturer’s after-sales services. Operations that may affect switchgear performance.

Level 5Operations whose procedures involve know-how, requiring the use of particular techniques or technologies, industrial processes or support equipment. Equipment will generally have to be returned to the factory; this applies only to moving parts.

TrainingSchneider Electric offers a wide choice of training courses on operating or maintaining its equipment. Level 3-4-5 operations require training on the equipment.

Training programmeThis training is delivered in our training centres by Schneider Electric’s accredited skilled staff.

Intervention level

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Operations to be performed

Power circuits & Control mechanisms

Premset Maintenance Guide

Dust, impacts, aggressive atmosphere, insufficient or excessive lubrication may adversely affectthe mechanical operation of a device.

OperationsThe necessity for an installation to run continuously generally means that thepower devices are seldom operated.Although the ageing process of a device may be accelerated if it is used toofrequently, mechanical malfunctions may occur if it is not operated fora long period of time.

Regular operation is necessary to maintain the original performance of each operating unit.

Interlocking with keys or padlocks must be fully tested to check that they are working correctly.

PM

100

597

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Low Voltage auxiliary circuits

Operations to be performedPremset Maintenance Guide

Auxiliary wiringIt is used to transmit orders to the various control units of the device and retrieve its states.

A degraded connection or insulating material may prevent the device from operating or cause unwanted tripping. Auxiliary wiring must be checked and replaced at regular intervals, if necessary, especially in the event of vibrations, a high ambient temperature or corrosive atmospheres.

Signalling contactsThe contacts indicating the position of the circuit breaker, earthing switch, voltage transformer truck and ready-to-operate circuit breaker allow the operator to view the states and to act accordingly. Any incorrect signalling can lead to device controlerrors that may endanger the operators.

Contact failure (worn contacts, loose terminals) may be the result of vibrations, corrosion or abnormal overheating; preventive maintenance must ensure good continuity (or non-continuity) of the contact in the different states.

Protection relayAn electrical fault on the installation is detected by the relay which orders the circuit breaker to open in order to ensure that the equipment and operators are protected.Electronic components and cards are sensitive to the environment (ambient temperature, humid and corrosive atmosphere) and to harsh operating conditions (magnetic fields, vibrations, etc.).

To ensure safe operation, the following must be checked at regular intervals:• the tripping chain,• the intervention times according to fault current levels.

Refer to the documents specific to the protection relay used.

Do not walk on the parts, assemblies and areas identified by this pictogram

The equipment must be switched off

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Recommended frequencyPremset Maintenance Guide

3 to 5 years Normal operating conditions

The maintenance programme must be carried out on the cubicles as soon as they are commissionedand then every five years at most; the maintenance operator must have the required skill level(see the description in the table below).These operations are applicable for the environmental and operating conditions that meetthe normal service conditions, in accordance with IEC 60694 for indoor switchgear.

Ambient air temperature• Less than or equal to 40°C.• Less than or equal to 35°C, on average over 24 hours.• Greater than or equal to - 25°C.

Humidity• Average relative humidity over 24 hours < 95%,.• Average relative humidity over 1 month < 90%.• Average vapour pressure over 24 hours < 2.2 kPa.• Average vapour pressure over 1 month < 1.8 kPa.

Altitude• Less than or equal to 3000 m.• Above 3000 m, a derating coefficient will be applied (please consult us).

AmbienceNo dust, smoke, salt, corrosive or flammable gas and vapour (clean industrial air).

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Recommended frequencyPremset Maintenance Guide

Check Frequency (year)

Tools Intervention level

Power down Approximate intervention time

Reference document

COM(1) 3 to 5 Cubicle Switchboard

Switchgear(2)

Visually check the general condition of the cubicle (front panel, control unit, box, frame) • • - 1 - 4 - - 15 min

Power circuitCore unit (encapsulated vacuum interrupter + earthing switch tank): metallisation checkup to ensure earth continuity

• • - 4 • - 15 min

Busbar + cable connection: earth continuity checkup • • - 4 - • 15 min

Control mechanismsOpen / Close the main switch manually and electrically • • - 1 - 4 • - 15 min

Open / Close the earthing switch manually • • - 1 - 4 • - 15 min

Check humidity & corrosion status of mechanism

- • - 1 - 4 • - 15 min

Operate the key-operated interlocks • • - 1 - 4 • • 30 min

Control and signalling auxiliariesCheck that the auxiliary wiring is uninterruptedand the appearance of the insulating material • • - 1 - 4 • • 1 h

Check the tripping chain • • - 1 - 4 • • 30 min - 1 h

(1) Commissioning(2) Visual checks + open/close every year" - ": no tool needed" • ": operation to be made

3 to 5 years Normal operating conditions

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Recommended frequencyPremset Maintenance Guide

6 months - 2 years Specific stress conditions*

The maintenance programme must be carried out on the cubicles as soon as they are commissionedand then every three years at most; the maintenance operator must have the required skill level. The operating conditions in certain fields of activity require the maintenance programmeto be carried out under normal conditions to be complemented for the impact of atmospheric pollutantsto be taken into account.Pollution:SO2 = sulphur dioxide,H2S = hydrogen sulphide.

These types of atmospheric pollutants are mainly found in heavy industry, such asrefineries, the iron and steel industry, paper mills, the petrochemical industry, etc.When these pollutants are combined with humidity, they are highly corrosive for theparts used in our equipment:• bare copper, silvering for electrical contacts,• control mechanisms.

* Specific stress conditions:corrosive atmosphere/solid pollution/heavy electrical stress (short circuit, high switching frequency, high humidity, low-high temperature,...)

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Recommended frequencyPremset Maintenance Guide

6 months - 2 years Specific stress conditions*

* Specific stress conditions:corrosive atmosphere/solid pollution/heavy electrical stress (short circuit, high switching frequency, high humidity, low-high temperature,...)

Check Frequency (year)

Tools Intervention level

Power down Approximate intervention time

Reference document

COM(1) 3 to 5 Cubicle Switchboard

Switchgear(2)

Visually check the general condition of the cubicle (front panel, control unit, box, frame) • • - 1 - 4 - - 15 min

Power circuitCore unit (encapsulated vacuum interrupter + earthing switch tank): metallisation checkup to ensure earth continuity

• • - 4 • - 15 min

Busbar + cable connection: earth continuity checkup • • - 4 - • 15 min

Control mechanismsOpen / Close the main switch manually and electrically • • - 1 - 4 • - 15 min

Open / Close the earthing switch manually • • - 1 - 4 • - 15 min

Check humidity & corrosion status of mechanism

- • - 1 - 4 • - 15 min

Operate the key-operated interlocks • • - 1 - 4 • • 30 min

Control and signalling auxiliariesCheck that the auxiliary wiring is uninterruptedand the appearance of the insulating material • • - 1 - 4 • • 1 h

Check the tripping chain • • - 1 - 4 • • 30 min - 1 h

(1) Commissioning(2) Visual checks + open/close every year" - ": no tool needed" • ": operation to be made

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AppendicePremset Maintenance Guide

Emergency spare parts

Spare parts Commercial reference

Action Who

A R M 1 2 3 4 5

Motor Block • •Motor Block 24-30 VDC P7M12001Motor Block 48-60 VAC/DC P7M12002Motor Block 100-130 VAC/DC P7M12003Motor Block 200-250 VAC/DC P7M12004

Trip coil MX1&2/XF • •Shut trip/close coil MX/XF 24-30 VDC P7M12005Shut trip/close coil MX/XF 48-60 VAC/DC P7M12006Shut trip/close coil MX/XF 100-130VAC/DC P7M12007Shut trip/close coil MX/XF 200-250VAC/DC P7M12008

Replace closing coil MN • •Undervoltage coil 24-30 VDC P7M12012Undervoltage coil 48-60 VAC/DC P7M12013Undervoltage coil 100-130 VAC/DC P7M12014Undervoltage coil 200-250 VAC/DC P7M12015

Micro switch • •2 switches for interlock and wiring P7M120091 switch for interlock and wiring P7M120101 switch for malt and wiring P7M12011

Replace SC100 • •SC100A 24V-60V EMS58560SC100E 110-250V EMS58561SC110A 24V-60V avec com EMS58563SC110E 110-250V avec com EMS58564

Mitop • •Low energy shunt trip Mitop P7M13001

Aux. Contacts Main switch and/or Earthing switch • •BLOCK OF 4 OF CONTACTS 47887WIRE AUXILIARY TERMINAL BLOCK FOR FIXE 47074

Voltage presence indicator/detector • •VPIS 3KV VPI62403VPIS-VO 3KV VPI62413VPIS 6,6KV VPI62404VPIS-VO 6,6KV VPI62414VPIS 15KV VPI62406VPIS-VO 15KV VPI62416VDS 3-7,2 KV L1 long (M06A CB) P7M14008VDS 3-7,2 KV L2 short P7M14009VDS 12-24 KV L1 long (M06A CB) P7M14010VDS 12-24 KV L2 short P7M14011

Live cable interlock • •Electrical device LCI 24-30VDC for Live Cable Interlock P7M12016Electrical device LCI 48-60 VAC/DC for Live Cable Interlock P7M12017Electrical device 100-130 VAC/DC for Live Cable Interlock P7M12018Electrical device 200-250 VAC/DC for Live Cable Interlock P7M12019Electronic device ESL100A 24-48VDC for LCI Live Cable Interlock P7M12020Electronic device ESL100E 110-250VAC/DC for LCI Live Cable Interlock P7M12021

Cable box door interlock • •Interlock main SW and ESW cable box door P7M17020

Fuse VT protection M06A tdb • •Power supply PS100 • •Long life battery - 12V - 24A.h EMS58582Long life battery - 12V - 38A.h EMS58583

Flair 22D battery tdb • •VIP battery tdb • •Busbars • •Set of 3 straight (flat) busbars P7M17001Set of 3 offset (bent) busbars P7M17002

Caps • •3 Caps with short stud P7M170033 Caps with medium stud P7M170043 VPIS Caps with short stud P7M17006

VT connection • •3 Flexible links for VT P7M17026

Busbar Installation • •1 tube of silicone grease 51191816f01 cleaning wipe AAV27065

Operating handle P7M17022 • •A: Adapatation - R: Replacement - M:Modification / 1: final customer - 2: certified Premset installer - 3: local Equipment unit - 4: Schneider Electric After Sales Service team - 5: factory return

As the standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication.

Design: SYNTHESE ECA, Schneider Electric Industries SAS Photos: Schneider Electric Industries SAS

This document has been printed on ecological paper

11-2013NRJED313586EN

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