Maintaining the Performance of the EvoPacT Circuit Breaker

After Tripping Due to an Electrical Event

Note the Event and Take Tripping into Account

Medium voltage electrical network events/faults, detected by the protection, control, and monitoring system, will trip the circuit breaker. Faults are displayed locally and remotely by the indicators and auxiliary contacts installed, depending on the ordered (requested) configuration.

Refer to this user guide and the user guides for the switchgear, and the protection, control and monitoring unit to help determine what the signaling means.

Identify the Tripping Cause

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, NOM-029-STPS, CSA Z462 or local equivalent. Do not re-close a circuit (locally or remotely) before the root cause of the tripping event has been identified and cleared. Turn off all power supplying the equipment before working on or inside the circuit breaker. Verify the circuit breaker is in the open (O OPEN) and racked-out position. Always practice lock-out/tag-out procedures according to OSHA requirements. Use out-of-service tags and padlocks when working on equipment. Leave tags in place until the work is completed and the equipment is ready to be put back into service. Always use a properly rated voltage sensing device to confirm that the power is off. Be aware of potential hazards. Carefully inspect the work area and remove any tools or objects that may have been left on or inside the equipment. Make sure all devices, doors, barriers, plates, panels, and covers are in the correct position before operating the circuit breaker, racking the circuit breaker in or out of the connected position, and before turning on power to this equipment. Failure to follow these instructions will result in death or serious injury.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, NOM-029-STPS, CSA Z462 or local equivalent.
Do not re-close a circuit (locally or remotely) before the root cause of the tripping event has been identified and cleared.
Turn off all power supplying the equipment before working on or inside the circuit breaker.
Verify the circuit breaker is in the open (O OPEN) and racked-out position.
Always practice lock-out/tag-out procedures according to OSHA requirements. Use out-of-service tags and padlocks when working on equipment. Leave tags in place until the work is completed and the equipment is ready to be put back into service.
Always use a properly rated voltage sensing device to confirm that the power is off.
Be aware of potential hazards. Carefully inspect the work area and remove any tools or objects that may have been left on or inside the equipment.
Make sure all devices, doors, barriers, plates, panels, and covers are in the correct position before operating the circuit breaker, racking the circuit breaker in or out of the connected position, and before turning on power to this equipment.

Failure to follow these instructions will result in death or serious injury.

NOTICE
INOPERABLE EQUIPMENT Troubleshooting assistance may be available, depending on the type of protection, control, and monitoring unit. Depending on the type of electrical event/fault and the criticality of the loads, a number of precautionary measures must be taken. In particular, checking insulation and dielectric tests should be performed on all or part of the installation. These checks and tests must be directed and carried out by qualified personnel who are trained on EvoPacT circuit breakers. Failure to follow these instructions can result in equipment damage.

NOTICE

INOPERABLE EQUIPMENT

Troubleshooting assistance may be available, depending on the type of protection, control, and monitoring unit.
Depending on the type of electrical event/fault and the criticality of the loads, a number of precautionary measures must be taken. In particular, checking insulation and dielectric tests should be performed on all or part of the installation. These checks and tests must be directed and carried out by qualified personnel who are trained on EvoPacT circuit breakers.

Failure to follow these instructions can result in equipment damage.

A circuit breaker tripping/electrical event may have a number of causes. Refer to Troubleshooting and Solutions and contact the local Schneider Electric Services representative, if the cause for the trip cannot be found.

In the Event of a Short Circuit, Inspect the Circuit Breaker

Check the general condition of the circuit breaker.
Check the general condition of the primary high voltage contacts (i.e. the runbacks and clusters) and each of the vacuum interrupter pole assemblies on the circuit breaker.
Conduct electrical testing to evaluate if any damage has occurred to the circuit breaker. Refer to Maintenance Dielectric Withstand Test and Circuit Breaker Primary Circuit Resistance Measurement.
Check and record E-gap to evaluate the amount of contact erosion. Refer to Maintenance E-gap Measurement.
If the circuit breaker is still in good condition, proceed to resetting the installation.

Reset the Installation

After the cause of tripping has been identified and cleared or eliminated and verifying that all equipment is fully functional, reset the installation. Refer to this user guide and the user guides for the switchgear and the protection, control and monitoring unit.

Before Working on the Circuit Breaker (LOTO Procedure)

DANGER
hazard of electric shock, explosion, or arc flash Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, NOM-029-STPS, CSA Z462, or local equivalent. Turn off all power supplying the equipment before working on or inside the circuit breaker. Verify the circuit breaker is in the open (O OPEN) and racked-out position. Always practice lock-out/tag-out procedures according to OSHA requirements. Use out-of-service tags and padlocks when working on equipment. Leave tags in place until the work is completed and the equipment is ready to be put back into service. Always use a properly rated voltage sensing device to confirm that the power is off. Do not make any modifications to the equipment or operate the system with interlocks or barriers removed. Contact the local Schneider Electric representative for additional instructions if the equipment does not function as described in this user guide. Be aware of potential hazards. Carefully inspect the work area and remove any tools or objects that may have been left on or inside the equipment. Make sure all devices, doors, barriers, plates, panels, and covers are in the correct position before operating the circuit breaker, racking the circuit breaker in or out of the connected position, and before turning on power to this equipment. Failure to follow these instructions will result in death or serious injury.

DANGER

hazard of electric shock, explosion, or arc flash

Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, NOM-029-STPS, CSA Z462, or local equivalent.
Turn off all power supplying the equipment before working on or inside the circuit breaker.
Verify the circuit breaker is in the open (O OPEN) and racked-out position.
Always practice lock-out/tag-out procedures according to OSHA requirements. Use out-of-service tags and padlocks when working on equipment. Leave tags in place until the work is completed and the equipment is ready to be put back into service.
Always use a properly rated voltage sensing device to confirm that the power is off.
Do not make any modifications to the equipment or operate the system with interlocks or barriers removed. Contact the local Schneider Electric representative for additional instructions if the equipment does not function as described in this user guide.
Be aware of potential hazards. Carefully inspect the work area and remove any tools or objects that may have been left on or inside the equipment.
Make sure all devices, doors, barriers, plates, panels, and covers are in the correct position before operating the circuit breaker, racking the circuit breaker in or out of the connected position, and before turning on power to this equipment.

Failure to follow these instructions will result in death or serious injury.

Turn off all power supplying the equipment before working on or inside the circuit breaker or equipment.
Open the circuit breaker before working on the circuit breaker or equipment.
Rack out the circuit breaker and make sure it is in the test/disconnected position. Refer to The Racking Mechanism Indicators, for more information.
Make sure the circuit breaker is open (O OPEN) and the operating mechanism and closing springs are discharged. Refer to The Circuit Breaker Indicators, for more information.
Remove the circuit breaker from the switchgear using the Schneider Electric lift truck designed for SureSeT medium voltage switchgear. Refer to Insertion into and Removal from the Switchgear, for further information.

Maintenance Prerequisites

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, NOM-029-STPS, or CSA Z462 or local equivalent. Electrical equipment may only be maintained by qualified personnel. Do not disassemble the circuit breaker for maintenance work, except for the accessories described in this maintenance section. All maintenance must be performed by qualified personnel in accordance with local codes with the circuit breaker removed from its compartment and isolated from the medium voltage. The control voltage must be removed from the controls. The circuit breaker must be in the open (O OPEN) position with all springs discharged. Always practice lock-out/tag-out procedures according to OSHA requirements. Use out-of-service tags and padlocks when working on equipment. Leave tags in place until the work is completed and the equipment is ready to be put back into service. Comply with the specified maintenance intervals. Perform maintenance according to the actual operating and ambient conditions. Contact the local Schneider Electric representative with any questions or concerns. Do not use chlorinated detergents. Do not make any modifications to the equipment or operate the system with interlocks or barriers removed. Contact the local Schneider Electric representative for additional instructions if the equipment does not function as described in this user guide. Be aware of potential hazards. Carefully inspect the work area and remove any tools or objects that may have been left on or inside the equipment. Make sure all devices, doors, barriers, plates, panels, and covers are in the correct position before operating the circuit breaker, racking the circuit breaker in or out of the connected position, and before turning on power to this equipment. Failure to follow these instructions will result in death or serious injury.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, NOM-029-STPS, or CSA Z462 or local equivalent.
Electrical equipment may only be maintained by qualified personnel.
Do not disassemble the circuit breaker for maintenance work, except for the accessories described in this maintenance section.
All maintenance must be performed by qualified personnel in accordance with local codes with the circuit breaker removed from its compartment and isolated from the medium voltage. The control voltage must be removed from the controls. The circuit breaker must be in the open (O OPEN) position with all springs discharged.
Always practice lock-out/tag-out procedures according to OSHA requirements. Use out-of-service tags and padlocks when working on equipment. Leave tags in place until the work is completed and the equipment is ready to be put back into service.
Comply with the specified maintenance intervals.
Perform maintenance according to the actual operating and ambient conditions. Contact the local Schneider Electric representative with any questions or concerns.
Do not use chlorinated detergents.
Do not make any modifications to the equipment or operate the system with interlocks or barriers removed. Contact the local Schneider Electric representative for additional instructions if the equipment does not function as described in this user guide.
Be aware of potential hazards. Carefully inspect the work area and remove any tools or objects that may have been left on or inside the equipment.
Make sure all devices, doors, barriers, plates, panels, and covers are in the correct position before operating the circuit breaker, racking the circuit breaker in or out of the connected position, and before turning on power to this equipment.

Failure to follow these instructions will result in death or serious injury.

Knowledge Levels

Level 1:	Basic maintenance operations which can be carried out by personnel with basic skills and doing operations according to Schneider Electric documentation. The personnel has received specific training.
Level 2:	Maintenance operations to be carried out by professional and trained personnel, according to instructions provided by Schneider Electric or following Schneider Electric documentation.
Level 3:	Advanced maintenance operations performed by authorized and trained personnel or Schneider Electric Services.

Operating Limits for the EvoPacT Circuit Breaker

When the EvoPacT circuit breaker is installed and used in normal service conditions and in compliance with the recommended maintenance program, this equipment is designed to operate up to the number of cycles shown in the table below.

Rated Short Circuit Current	ARF200 Operating Mechanism Operation Cycles	Racking Operation Cycles	ARF200 Operating Mechanism M1 Electrical Charging Motor Operation Cycles	MX/XF/MN Release Coils Operation Cycles
≤40kA	30,000	500 with non-Contact Plus or 1,000 with Contact Plus	30,000	30,000

NOTE: These are the maximum number of operations permitted under normal conditions. The equipment must be replaced once any of the maximum number of operations are reached. The number of permissible operations may be reduced if conditions are not normal.

Products and Consumables

Supplier	Item	Schneider Electric Catalog Number*	Symbol
Schneider Electric or Local	Mobilith SHC™ 100 (non-operating mechanism grease)	HUA11872	G1
Schneider Electric or Local	Mobil DTE 24 (or Shell Tellus S2 MX 32) (ARF200 operating mechanism oil)	18315110	O1
Local	Brush for lubricant application	—	T1
Local	Dropper for lubricant application	—	T2
Local	Clean, dry, lint-free cloth	—	T3

Cover Removal/Installation Instructions

If required for maintenance purposes, it is possible to remove the circuit breaker front covers. To REMOVE the front covers on the circuit breaker perform the following steps (see Removal of Covers):

Remove the four (4) bolts on the front cover with a Phillips-head screwdriver.
Move the front cover straight out to take off and then carefully set aside the screws and cover.
On the top secondary plug cover, squeeze the 2x areas in to unsnap the cover from the plates.
Simultaneously, rotate the bottom out and move the top secondary plug cover up to take off and then carefully set aside with the front cover.

Removal of Covers

If it was required to remove the circuit breaker covers during maintenance, ensure that all the covers are properly re-installed. Carefully inspect the work area and make sure to remove any tools or objects that may have been left on or inside the circuit breaker. To INSTALL the front covers on the circuit breaker perform the following steps (see Installation of Covers):

Simultaneously, rotate the bottom of the top secondary plug cover in while moving the cover down to hook the top two (2) tabs over the plug bracket.
On the top secondary plug cover, squeeze the 2x areas in and push the cover towards the plates to snap the two (2) tabs into the slots on the plates.
Move the front cover straight in with the top of the front cover sliding above the metal plate and below the bottom surface of the top secondary plug cover.
Align the four (4) holes on the front cover and install the four (4) bolts with a Phillips-head screwdriver. Torque the bolts to 16–19.5 in-lbs (1.8–2.2 N•m). Do not torque over the maximum of 19.5 in-lbs (2.2 N•m) to prevent damage to the front cover.

Installation of Covers

Cleaning

Follow these practices when cleaning EvoPacT equipment.

NOTICE
improper cleaning practices Use only a clean, dry, lint-free cloth to clean the equipment. Do not use water, alcohol, or other solvents. Do not use high-pressure air, a pressure washer, or other high-pressure cleaning methods. Failure to follow these instructions can result in equipment damage.

Lubrication Instructions

WARNING
damage to the circuit breaker Do not use cleaning agents to wash out the bearings and joints. Use only approved lubricants. Do not substitute lubricants. Use the recommended lubricants only in specified areas of the circuit breaker. Do not use chlorinated detergents. Lubricate the charging ratchet of the drive mechanism on the ARF200 operating mechanism per the recommended maintenance intervals or when the number of operation cycles reaches 5,000, whichever comes first. Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNING

damage to the circuit breaker

Do not use cleaning agents to wash out the bearings and joints.
Use only approved lubricants.
Do not substitute lubricants.
Use the recommended lubricants only in specified areas of the circuit breaker.
Do not use chlorinated detergents.
Lubricate the charging ratchet of the drive mechanism on the ARF200 operating mechanism per the recommended maintenance intervals or when the number of operation cycles reaches 5,000, whichever comes first.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Under normal conditions, lubricate per the recommended maintenance intervals. Refer to Maintenance Structure for more information. More adverse conditions may require more frequent lubrication intervals and different procedures. Variations should be based on the experience of the operating company.

Lubrication Points on the ARF200 Operating Mechanism Charging Ratchet

WARNING
damage to the circuit breaker Do not lubricate the following components: Motor Ball bearings Auxiliary releases Microswitches Blocking magnets Auxiliary switches Failure to follow these instructions can result in death, serious injury, or equipment damage.

Observe the following images for where and how to lubricate charging ratchet located on the left side of the ARF200 operating mechanism. See Circuit Breaker Mechanism Area for location of the ARF200 operating mechanism on the circuit breaker.

Location of the component

Charging Ratchet

Lubrication area in charging ratchet

Lubrication area

NOTE: Use only the “operating mechanism oil” (O1) with dropper (T2) on these areas. Do not use the “non-operating mechanism grease” (G1) or any other lubricants.

Lubrication Points of non-Operating Mechanism Areas of the Circuit Breaker

Areas to Grease in EvoPacT Circuit Breaker Assembly

Apply a thin layer of the “non-operating mechanism grease” (G1) with a brush (T1) (refer to the table in Products and Consumables to these areas: the shutter operating ramps; the MOC mechanism roller, cutout, and linkages; the primary high voltage clusters (6 places); the sliding ground contact; and the automatic discharge pin. Refer to the images below for locations identified.

A	Shutter operating ramps
B	MOC mechanism - roller
C	MOC mechanism - cutout
D	MOC mechanism - linkages
E	Primary high voltage contacts - clusters (6 places)
F	Sliding ground contact
G	Automatic discharge pin

NOTE: Use only the “non-operating mechanism grease” (G1) with brush (T1) on these areas. Do not use the “operating mechanism oil” (O1) or any other lubricants.

Maintenance E-gap Measurement

To re-measure erosion gap or E-gap, during the life of the circuit breaker, the circuit breaker must be completely removed from the switchgear circuit breaker compartment.

The E-gap is the space between the bottom of the pivot block and the top surface of the hexagonal end of the bias spring sleeve. The pivot block and bias spring sleeve are located below each of the vacuum interrupters at the bottom of the pole assembly (refer to E-gap).

The initial E-gap should have also been measured and documented before installing the circuit breaker into the switchgear. Refer to Initial E-gap Measurement, for more details.

Refer to the maintenance interval tables in Maintenance Structure for information on the required frequency at which to re-measure the circuit breaker E-gap during the life of the circuit breaker.

The distance between the initial E-gap measurement and the current E-gap measurement is the amount of contact erosion that has occurred within the vacuum bottle interrupters.

When the current E-gap measurement falls below the limit, the vacuum interrupter may be at its end of life. In this case, contact the local Schneider Electric Services representative.

To measure the current E-gap and calculate the contact erosion make sure to have followed all the steps required to perform maintenance in Before Working on the Circuit Breaker (LOTO Procedure). After those steps are complete, perform the following steps to measure and record the current E-gap. These steps are similar to those performed during initial E-gap measurement.

Manually charge the circuit breaker and push the close (I CLOSE) push button.
Use pin gauges, feeler gauges, or drill bits to measure the space between the pivot block and the hexagonal block.
The E-gap is factory set and should not be adjusted, only measured.
Record the current E-gap measurement in the maintenance log on the Schneider Electric Safe Repository.
Push the open (O OPEN) push button.
Remove all tools and miscellaneous items left on or inside the circuit breaker.
Replace all devices and circuit breaker covers.
With the current E-gap measurement, perform the contact erosion calculation using this equation:

Contact Erosion = (Initial E-gap measurement) - (Current E-gap measurement)
If the current E-gap measurement is less than 0.071 inches (1.8 mm), contact the local Schneider Electric Services representative.

Contact Erosion Limit

Short Circuit Current Rating	End-of-Life E-gap
<40 kA	0.071 in. (1.8 mm)

NOTE: Do not reset the E-gap.

Maintenance Dielectric Withstand Test

DANGER
hazard of electric shock, explosion, or arc flash When performing the dielectric withstand test: Do not exceed the voltages shown in the table One-Minute High-Potential Dielectric Withstand Test Levels. Keep all persons at least 6 ft. (2 m) away from the circuit breaker being tested. Discharge to ground the primary high voltage contacts (i.e., runbacks and clusters) and the vacuum interrupter mid-band ring before handling the circuit breaker. These areas can retain a static charge after a dielectric withstand test. Failure to follow these instructions will result in death or serious injury.

DANGER

hazard of electric shock, explosion, or arc flash

When performing the dielectric withstand test:

Do not exceed the voltages shown in the table One-Minute High-Potential Dielectric Withstand Test Levels.
Keep all persons at least 6 ft. (2 m) away from the circuit breaker being tested.
Discharge to ground the primary high voltage contacts (i.e., runbacks and clusters) and the vacuum interrupter mid-band ring before handling the circuit breaker. These areas can retain a static charge after a dielectric withstand test.

Failure to follow these instructions will result in death or serious injury.

Dielectric withstand testing needs to be performed as part of a series of pre-operational tests (see Initial Dielectric Withstand Test), regular maintenance, and as a method of determining the adequacy of equipment.

To perform dielectric withstand tests, during the life of the circuit breaker, the circuit breaker must be completely removed from the switchgear circuit breaker compartment.

Initial dielectric withstand tests should have also been performed before installing the circuit breaker into the switchgear. Refer to the section Initial Dielectric Withstand Test, for more details.

Refer to the maintenance interval tables in section Maintenance Structure for information on the required frequency at which to retest for circuit breaker dielectric withstand capability during the life of the circuit breaker.

To perform the dielectric withstand test, during the life of the equipment, make sure to have followed all the steps required to perform maintenance in the section Before Working on the Circuit Breaker (LOTO Procedure). After those steps are complete, repeat the testing performed in Initial Dielectric Withstand Test, at the required maintenance intervals.

Consistent unacceptable test results may indicate a loss of vacuum or that the circuit breaker is at its end-of-life. Contact the local Schneider Electric Services representative for technical assistance.

Circuit Breaker Primary Circuit Resistance Measurement

To measure electrical resistance, during the life of the circuit breaker, the circuit breaker must be completely removed from the switchgear circuit breaker compartment. The electrical resistance should be measured from the upper primary high voltage runback to the lower primary high voltage runback on each phase of the circuit breaker (see Typical EvoPacT Circuit Breaker Features).

Refer to the maintenance interval tables in Maintenance Structure, for information on the required frequency at which to re-measure the circuit breaker resistance during the life of the circuit breaker.

The resistance measurement from the upper primary high voltage runback to the lower primary high voltage runback on each phase of a closed (I CLOSED) circuit breaker should not exceed 50 micro ohms using a low-resistance ohmmeter. Determine the circuit resistance of each phase of the circuit breaker with a dc current of at least 100 A. A reading exceeding 50 micro ohms may indicate that either a poor connection exists or that the vacuum interrupter has reached the end of its life cycle. Contact the local Schneider Electric Services representative for technical assistance.

Maintenance Structure

These recommended frequencies are for normal operating conditions. The frequencies should be increased according to the severity of environmental conditions. Abnormal operation or conditions may require immediate corrective action.

If operated beyond the normal service conditions, the equipment may be subject to accelerated aging. The equipment may only be used under conditions other than the normal service conditions with express written permission from Schneider Electric. If the circuit breakers or switchgear are equipped with digital health monitoring system options, then any alerts/warnings/alarms from this(these) monitoring system(s) should be immediately assessed and addressed accordingly.

Regardless of the number of years, perform the required inspection and maintenance on the circuit breaker every:

5,000 operating cycles of the circuit breaker operating mechanism.
50 cycles of racking the circuit breaker in and out.

Safe Repository

For better follow-up of the equipment, upload maintenance reports to the Schneider Electric Safe Repository.

Routine Maintenance

Routine maintenance will be performed every year or at the indicated number of operation cycles, whichever occurs first, to keep the circuit breaker in optimal conditions. The routine maintenance should be operated by the qualified personnel with level 1 knowledge (refer to Knowledge Levels).

Task		Frequency: Number of Operation Cycles
Check	Visual inspection of the entire circuit breaker
	Check the general conditions (missing, loose, or broken parts, signs of corrosion, condensation, etc.) of the mechanical parts and operating mechanism
	Check operation number of the circuit breaker
	Check operation number of the racking mechanism in logs
	Visual check of the E-gap
	Visual inspection (signs of moisture, rust, chalking, cracking, excessive dirt, or signs of overheating) of the clusters
	Inspect the vacuum interrupter poles for damages (chalking, cracking, excessive dirt, or signs of overheating, moisture, or condensation, etc)
	Check circuit breaker padlocks
	Check racking mechanism nterlocks
Clean	Clean and dust the vacuum interrupter poles and primary high voltage runbacks and clusters
Operation	Operate the circuit breaker manually
	Operate the circuit breaker electrically (if equipped)
	Operate the racking mechanism manually
	Operate the racking mechanism electrically (if equipped)
Lubricant	Lubricate charging ratchet	5,000 operating cycles of the circuit breaker operating mechanism
	Lubricate the MOC mechanism roller, cutout, and linkages.	5,000 operating cycles of the circuit breaker operating mechanism
	Lubricate the shutter operating ramps, the primary high voltage clusters (6 places), the sliding ground contact, and the automatic discharge pin	50 cycles of racking the circuit breaker in and out

Time Required

The overall time required to perform this maintenance program is as below:

25–35 minutes typically for a circuit breaker and all accessories installed.

Tools

The following tools may be required to perform the routine maintenance tasks:

a standard toolbox with electrical tools and equipment for an electrician.
Clean, dry, lint-free cloth (T3).
Operating mechanism oil (O1) with dropper (T2).
Non-operating mechanism grease (G1) with brush (T1).

NOTE: Refer to the table in Products and Consumables.

Intermediate Maintenance

Intermediate maintenance will be performed every 2 years or at the indicated number of operation cycles, whichever occurs first, to keep the circuit breaker in optimal conditions. And also, the intermediate maintenance should be operated by the qualified personnel with level 2 knowledge (refer to Knowledge Levels).

Task		Frequency: Number of Operation Cycles
Check	Check the fixing and tightening of auxiliaries and micro-contacts (weldings, signs of wear)
	Check the primary high voltage runbacks and clusters
	Check the operating mechanism lubrication point
	Check the racking system interlocks
Lubricant	Lubricate the charging ratchet of the operating mechanism.	5,000 operating cycles of the circuit breaker operating mechanism
	Lubricate the MOC mechanism roller, cutout, and linkages.	5,000 operating cycles of the circuit breaker operating mechanism
	Lubricate the shutter operating ramps, the primary high voltage clusters (6 places), the sliding ground contact, and the automatic discharge pin	50 cycles of racking the circuit breaker in and out
Operation	Open and close the circuit breaker mechanism electrically
Measurement	Locking magnets Y0 resistance measurement
	Locking magnets Y1 resistance measurement
	Circuit breaker primary circuit resistance measurement
	Open/close release resistance measurement
	Dielectric withstand test

Time Required

The overall time required to perform this maintenance program is as below:

50–60 minutes typically for a circuit breaker and all accessories installed.

Tools

The following tools may be required to perform the intermediate maintenance tasks:

A standard toolbox with electrical tools and equipment for an electrician.
Micro Ohm Meter and Power Frequency Voltage Test devices.
Clean, dry, lint-free cloth (T3).
Operating mechanism oil (O1) with dropper (T2).
Non-operating mechanism grease (G1) with brush (T1).

NOTE: Refer to the table in Products and Consumables.

Manufacturer Maintenance

Manufacturer maintenance will be performed every 3 years or at the indicated number of operation cycles, whichever occurs first, to keep the circuit breaker in optimal conditions. And also, the manufacturer maintenance should be operated by the qualified personnel with level 3 knowledge (refer to Knowledge Levels.

Task		Frequency: Every Three Years	Frequency: Number of Operation Cycles
Measurement	Mechanical characteristic test*
Measurement	Check E-gap with gauge

Time Required

The overall time required to perform this maintenance program is as below:

75–85 minutes typically for a circuit breaker and all accessories installed.

Tools

The following tools may be required to perform the manufacturer maintenance tasks:

A standard toolbox with electrical tools and equipment for an electrician.
Pin gauges, feeler gauges, or drill bits.

Manufacturer Maintenance Prolongation

Maintenance Scheme

Basic electrical equipment, technical expertise, IoT, and cloud connectivity are pillars of Schneider Electric, which can fine-tune the maintenance periodicity of your electrical assets. It relies on the following guidelines:

By identifying the equipment (range, age, maintenance history) and its environmental and usage conditions, Schneider Electric defines its maintenance periodicity. This recommendation is based not only on our technical expertise but also on field statistics. The statistics are from the maintenance history of our worldwide installed base.
If the asset is non-connected, this maintenance periodicity is fixed and time-based.
If the asset is connected, this maintenance periodicity is condition-based, which allows a periodicity extension of up to 2 years. Considering the assets under monitoring can enable live monitoring, the maintenance date shall be rescheduled at the right date. It enables the dynamic condition-based maintenance. This dynamic stage is driven by the Maintenance Index computed in EcoStruxure Asset Advisor.

These guidelines are described in Rules for electrical distribution equipment maintenance and detailed in the next parts.

Rules for electrical distribution equipment maintenance

Time-based Maintenance

It is recommended to carry out manufacturer maintenance every 3 years as an average in standard operation condition (See Time-based maintenance recommendation - Bottom), on top of the routine maintenance generally prescribed on an annual basis.

The recommendation is valid for any industry and geography.

This maintenance periodicity shall be reduced depending on environmental conditions, where one parameter might influence the whole performance (Time-based maintenance recommendation - Top). It may also vary with equipment usage conditions.

This maintenance periodicity is fixed and time-based, defined with operating/servicces conditions assumptions and mission profile.

Time-based maintenance recommendation

NOTE:

Top section: factors description
Bottom section: recommended years periodicity

The recommended maintenance plan for non-connected assets follows a repetitive cycle of routine/intermediate/manufacturer maintenance interventions like described in Repetitive pattern for maintenance plan on non-connected assets.

Repetitive pattern for maintenance plan on non-connected assets

Condition-based Maintenance

Extend the maintenane periodicity:

The increasing native IoT connectivity of our equipment and the continuous monitoring of environmental equipment allow the extension of the manufacturer maintenance periodicity up to 1 or 2 years based on the EcoStruxure Asset Advisor services subscription:

Preventive: Up to 4 years further to operating/services conditions continuously monitored.
Predictive: Up to 5 years further to operating/services conditions continuously monitored and asset health computation.

Asset maintenance at the right date with maintenance index:

The Maintenance Index, based on stress, wear and aging indicators of the asset, continuously controls the date of the next recommended maintenance. The Maintenance Index scales from 1 (no reschedule needed) to 5 (immediate action needed), indicates the need for maintenance and enables dynamic periodicity adjustment.

Dynamic condition-based maintenance:

The maintenance date shall evolve dynamically following the scheduled initial date and the maintenance index result. If the Maintenance Index goes high, a new maintenance date might be proposed to the customer. The new date might be earlier than the initially schedule date.

NOTE: Between two manufacturer maintenances, one intermediate maintenance shall be performed, and its date shall dynamically evolve, based on the Maintenance Index.

The recommended maintenance plan for connected assets follows an optimized cycle of intermediate/manufacturer maintenance interventions like described in Repetitive pattern for maintenance plan on connected assets with EAA predictive.

Repetitive pattern for maintenance plan on connected assets with EAA predictive

Maintenance Guideline for Non-connected and Connected Assets

Three maintenance levels:

Schneider Electric’s maintenance offer is broken down into three different levels: routine, intermediate and manufacturer (Maintenance levels and contents):

Routine maintenance is the simple preventive maintenance, performed by Schneider Electric experts, any service providers or customer competent technicians.
Intermediate maintenance is the preventive maintenance preferably performed by Schneider Electric experts or trained authorized service providers (facility managers, partners, …).
Manufacturer maintenance is the extensive preventive maintenance performed only by a Schneider Electric service representative.

NOTE: Intermediate maintenance includes routine maintenance and manufacturer maintenance includes both.

Maintenance levels and contents

Maintenance periodicity:

The recommended maintenance plan for non-connected assets follows a time-based cycle of routine/intermediate/manufacturer maintenance interventions (Recommended maintenance periodicity for non-connected and connected assets).

The maintenance periodicity for connected assets follows an optimized and dynamic cycle of intermediate/manufacturer maintenance interventions (Recommended maintenance periodicity for non-connected and connected assets). And as the routine maintenance is removed, it allows less shutdowns for the Customer.

NOTE: Depending Customer’s choice, it’s possible to keep a time-based maintenance on connected assets, while still benefiting from maintenance index and recommendation in case of maintenance to be anticipated.

Recommended maintenance periodicity for non-connected and connected assets

Example:

An MV circuit breaker equipped with digital monitoring in switchgear equipped with protection relay, CL110 sensors, and TH110 thermal sensors in normal environmental conditions.

Without connected sensors, its manufacturer maintenance periodicity would be time-based, every 3 years (Recommended dynamic condition-based maintenance example (non-contractual picture)).

Thanks to connected sensors and condition monitoring with EcoStruxure Asset Advisor predictive, this manufacturer maintenance periodicity shifts to 5 years (Recommended dynamic condition-based maintenance example (non-contractual picture)). After the first maintenance operation, the Maintenance Index equals to 1.

Nevertheless, in case of abnormal behavior or evolution of usage and environmental conditions, the maintenance index will dynamically increase from 1 to 4, indicating the necessity to reschedule the date of the next maintenance intervention (Recommended dynamic condition-based maintenance example (non-contractual picture)).

Recommended dynamic condition-based maintenance example (non-contractual picture)

Performing Diagnostics

Schneider Electric offers a large portfolio of proprietary diagnostic services for medium voltage electrical distribution equipment and the EvoPacT circuit breaker. These services are based on long-term experience, using manufacturing data gathered over many years and analytics. Please contact the local Schneider Electric Service representative for further information on how they can equip or perform these diagnostics on switchgear and/or circuit breakers.

End of life

WARNING
hazard of mechanical impact Apply appropriate personal protective equipment (PPE) and follow safe work practices. See NFPA 70E, NOM-029-STPS, or CSA Z462 or local equivalent. This equipment must only be dismantled by qualified personnel. Failure to follow these instructions can result in death, serious injury, or equipment damage.

When a circuit breaker approaches its operating limits, as shown in the table in Operating Limits for the EvoPacT Circuit Breaker, contact the local Schneider Electric Services representative. Schneider Electric is concerned about issues that impact the environment. Schneider Electric offers a complete service to dismantle and recycle Medium Voltage equipment at end-of-life. The circuit breaker contains compressed springs.

Do not perform or carry out any dismantling operations unless authorized.
Penalties may apply according to local regulations and rules.

Contact the local Schneider Electric Service representative for further information.

Circuit Breaker Spare Parts and Component Replacement

WARNING
Use only the spare parts and components recommended by Schneider Electric. Failure to follow these instructions can result in death, serious injury, or equipment damage.

Schneider Electric supplies original spare parts and can provide assistance with identifying the spare parts required for an EvoPacT circuit breaker. To order spare parts, inquire about modification or upgrade of the circuit breaker, or for questions concerning the replacement of any parts or components please contact the local Schneider Electric representative.

Troubleshooting and Solutions

Diagnose the Problem	Identify the Possible Cause(s)	Find the Solution(s)
Charging in the Connected Position
Automatic electrical charging of the operating mechanism does not occur, but the circuit breaker can be mechanically charged.	There is missing or insufficient control supply voltage for the M1 electrical motor.	Check the voltage and the supply circuit conformity (U > 0.85 Un). If the problem persists, replace the M1 electrical motor.
Closing in the Connected Position
The circuit breaker cannot be closed locally or remotely.	The circuit breaker is interlocked mechanically.	Check the position of the racking mechanism. The racking/charging handle is still in the racking mechanism opening. Manually pushing the red racking/emergency trip push button on the racking mechanism. Check the status of the circuit breaker closing blocking electromagnet (if equipped).
	The circuit breaker is not completely connected.	Complete the circuit breaker racking in procedure.
	The operating mechanism is not charged.	If the circuit breaker M1 electrical motor is not energized: rack out the circuit breaker back to the test/disconnected position and perform a manual charge of the operating mechanism. If the circuit breaker M1 electrical motor is energized: check the voltage and the power supply circuit conformity (U > 0.85 Un). If the problem persists, replace the M1 gear motor.
	MX1 opening release is permanently supplied with power.	There is an opening order. Determine the origin of the opening order. This order must be canceled before the circuit breaker can be closed. If the problem persists, replace the MX1 release coil.
	MN undervoltage opening release is not supplied with power.	This is an opening order. Determine the origin of this order. Check the voltage and the supply circuit conformity (U > 0.85 Un). If the problem persists, replace the MN undervoltage release coil.
	XF closing release is continuously supplied with power while the circuit breaker is not “ready to close”.	Determine the origin of the closing order. This order must be canceled before the circuit breaker can be closed. Verify the circuit breaker is “ready to close.” Resend the closing order.
	Close blocking magnet is not supplied with power.	Check electrical interlocks that may be preventing the close blocking magnet from being energized. Check the voltage and the supply circuit conformity (U > 0.85 Un). If the problem persists, replace the close blocking magnet.
	The circuit breaker is not “ready to close”.	Determine what condition is blocking the "ready to close" state of the circuit breaker. Ensure no latched trip signal is applied to the circuit breaker. Resend the closing order.
The circuit breaker cannot be closed electrically, but can be closed mechanically using the closing (I CLOSE) push button located on the circuit breaker (not recommended).	Closing order is not executed by the XF closing release.	Check the voltage and the supply circuit conformity (0.85 - 1.1 Un). If the problem persists, replace the XF closing release coil.
	"Local / Remote" switch located on the compartment is in the "Local" position.	Change position of the "Local / Remote" switch located on the compartment to “Remote” position. Resend the closing order.
	The circuit breaker is not completely connected.	Check the functionality of the secondary disconnect plug and receptacle for circuit breaker power and control.
	The circuit breaker is electrically interlocked.	Verify the circuit breaker is “ready to close.” Check electrical interlocks that may prevent the close coil from being energized. Resend closing order.
Tripping in the Connected Position
Unexpected tripping of the circuit breaker.	Insufficient supply voltage of the MN undervoltage release.	Check the voltage and the supply circuit conformity (U > 0.85 Un).
	Load shedding order sent to the MX1 opening release by another device.	Check the overall load on the distribution system. If necessary, modify the setting of devices in the distribution system.
	Unexpected opening order from the MX1 opening release.	Determine the origin of the order. Refer to the user guide for the protection, control and monitoring unit.
	One of the following causes occurs: overload ground insulation fault short circuit detected by the protection relay/control unit	Determine and eliminate the tripping causes. Check the condition of the circuit breaker before putting it back into service.
Instantaneous opening after each attempt to close the circuit breaker.	Transient overcurrent during closing.	Check the distribution system or the settings of the protection relay/control unit. Check the condition of the circuit breaker before putting it back into service.
	Closing on a short circuit.	Determine and eliminate the tripping causes. Check the condition of the circuit breaker before putting it back into service.
Opening in the Connected Position
The circuit breaker cannot be opened mechanically or electrically.	The ARF200 operating mechanism may not be functioning as intended.	Contact the local Schneider Electric Services representative.
	The circuit breaker VI contacts may be welded.	Contact the local Schneider Electric Services representative.
The circuit breaker cannot be opened electrically, but can be opened mechanically using the opening (O OPEN) push button located on the circuit breaker or red racking/emergency trip push button located on the racking mechanism of the circuit breaker.	Opening order is not executed by the MX1 opening release.	Check the voltage and the supply circuit conformity: 0.7–1.1 Un for DC supply and 0.85–1.1 Un for AC supply. If the problem persists, replace the MX1 opening release coil.
	Opening order is not executed by the MN undervoltage opening release.	Drop in voltage insufficient or residual voltage (> 0.35 Un) across the terminals of the undervoltage release. If the problem persists, replace the MN undervoltage release coil.
	The circuit breaker is not completely connected.	Check the functionality of the secondary disconnect plug and receptacle for circuit breaker power and control.

Diagnose the Problem	Identify the Possible Cause(s)	Find the Solution(s)
Racking In or Racking Out
Cannot push the red racking/emergency trip push button located on the racking mechanism or insert the racking/charging handle into the racking mechanism insertion opening while in the test/disconnected or connected position.	A padlock or keylock for the racking mechanism is present on the switchgear circuit breaker compartment.	Check possibility to release the padlock or keylock in accordance with the status of the installation. Bring installation into compliance to release locked state. Remove the padlock or disengage the keylock.
	The racking mechanism is not properly locked in the correct position in the switchgear circuit breaker compartment.	Check that both the left and right locking tabs on the racking mechanism are properly engaged into the circuit breaker compartment latch plates so that the circuit breaker is properly secured in the compartment.
	The red racking/emergency trip push button located on the racking mechanism is padlocked.	Check possibility to release the padlock in accordance with the status of the installation. Bring installation into compliance to release locked state. Remove the padlock.
	The circuit breaker VI contacts may be welded.	Contact the local Schneider Electric representative.
	The electromagnetic interlock for blocking the racking mechanism is not supplied with power.	Check the voltage and the supply circuit conformity (U＞0.85 Un).
	A cover to prevent accidental trip is padlocked.	Check possibility to release the padlock in accordance with the status of the installation. Bring installation into compliance to release locked state. Remove the padlock.
Cannot turn the racking/charging handle.	Wrong direction of rotation.	Check the direction of rotation according to the "position indicator" and, in SureSeT Switchgear, refer to the instructions on the circuit breaker compartment door (see Circuit Breaker Manual Racking Operating Instructions).
The circuit breaker cannot be mechanically racked into the connected position.	The shutters may not be functioning as intended.	Check the operation of the shutters.
	Primary high voltage contact clusters are incorrectly positioned.	Check the assembly of the primary high voltage contact runbacks and clusters.
	A padlock or keylock for the racking mechanism is present on the switchgear circuit breaker compartment.	Check possibility to release the padlock or keylock in accordance with the status of the installation. Bring installation into compliance to release locked state. Remove the padlock or disengage the keylock.
	The electromagnetic interlock for blocking the racking mechanism is not supplied with power.	Check the voltage and the supply circuit conformity (U ＞ 0.85 Un).
	The circuit breaker is closed (I CLOSED).	Open the circuit breaker.
	The circuit breaker VI contacts may be welded.	Contact the local Schneider Electric representative.
	The racking mechanism is not properly locked in the correct position in the switchgear circuit breaker compartment.	Check that both the left and right locking tabs on the racking mechanism are properly engaged into the circuit breaker compartment latch plates so that the circuit breaker is properly secured in the compartment.
	The red racking/emergency trip push button located on the racking mechanism is padlocked.	Check possibility to release the padlock in accordance with the status of the installation. Bring installation into compliance to release locked state. Remove the padlock.
	The circuit breaker compartment latch plates are not functioning as intended.	Check that both the left and right locking tabs on the racking mechanism are properly engaged into the circuit breaker compartment latch plates so that the circuit breaker is properly secured in the compartment.
The circuit breaker cannot be electrically racked in or out. (In addition to these possible causes, the same possible causes for why the circuit breaker cannot be mechanically racked into the connected position should be considered.)	The switchgear circuit breaker compartment door is not fully closed.	Close the compartment door.
	The switchgear circuit breaker compartment door limit switch is not functioning as intended.	Check the operation of the door closed limit switch.
	The circuit breaker LV plug for additional features is not properly connected.	Check the connection of the LV plug for additional features.
Circuit Breaker Insertion or Extraction
The circuit breaker cannot be pulled out from the switchgear circuit breaker compartment.	The circuit breaker is not in the test/disconnected position.	Rotate the racking/charging handle until the circuit breaker reaches the test/disconnected position. Verify that both the left and right locking tabs on the racking mechanism are fully disengaged from the circuit breaker compartment latch plates.
The circuit breaker cannot be inserted into the switchgear circuit breaker compartment.	The compartment rating code plate is blocking the insertion of a circuit breaker. Since the circuit breaker and compartment are equipped with rating code plates, a circuit breaker can not be inserted into the compartment if it does not meet the rated performance of the compartment. To help ensure the circuit breaker is installed into the proper circuit breaker compartment, Schneider Electric recommends: checking the customer order drawings verifying the rating nameplates on the circuit breaker match the rated performance of the circuit breaker compartment verifying the secondary disconnect labels on the circuit breaker align with the labels on the circuit breaker compartment The compartment rating code plate, constructed of heavy gauge metal, blocks the insertion of a circuit breaker that does not correspond to the compartment.	Check concordance between the circuit breaker compartment rating code plate and the circuit breaker rating code plate.
	A lock is present on the shutters.	Check possibility to release the lock in accordance with the status of the installation. Bring installation into compliance to release locked state. Remove the lock once it is permitted.
	The circuit breaker compartment shutters are open.	Close the circuit breaker compartment shutters.
	The racking mechanism is not in the test/disconnected position.	Move the racking mechanism into the test/disconnected position.
The circuit breaker cannot be locked in the connected or test/disconnected position.	The circuit breaker is not in the correct position.	Turn the racking/charging handle until the circuit breaker reaches the wanted position (connected or test/disconnected).
	Racking/charging handle remains in the racking mechanism.	Remove the racking/charging handle and store it.
	The circuit breaker compartment latch plates are not functioning as intended.	Check that both the left and right locking tabs on the racking mechanism are properly engaged into the circuit breaker compartment latch plates so that the circuit breaker is properly secured in the compartment.
Switchgear circuit breaker compartment door cannot be closed.	The racking mechanism is not properly locked in the correct position in the switchgear circuit breaker compartment.	Check that both the left and right locking tabs on the racking mechanism are properly engaged into the circuit breaker compartment latch plates so that the circuit breaker is properly secured in the compartment.
	The secondary disconnect receptacle for circuit breaker power and control handle is not pushed back to its latched position in the compartment and is still in the test position.	Push the secondary disconnect receptacle handle out from the test position back to its latched position.
	A low voltage device mounted on the door is hitting the circuit breaker.	Check low voltage device placement.
Circuit Breaker with Motorized Racking Mechanism
Racking motor does not stop operating at end of stroke.	Motor issue during racking or racking mechanism microswitch fails to operate.	De-energize the motorization from the LV cabinet. Continued use of the motor in this state may damage the permanent magnet of the motor. Use the manual operation procedure to manually rack the racking mechanism, as required. Contact the local Schneider Electric representative to evaluate the motorized operation.
Motorized racking in operation did not complete full racking stroke.	Motor issue during racking in or racking mechanism microswitch fails to operate.	De-energize the motorization from the LV cabinet. Use the manual operation procedure to manually rack out the racking mechanism, and then rack it back in. Contact the local Schneider Electric representative to evaluate the motorized operation.
Motorized racking out operation did not complete full racking stroke.	Motor issue during racking out or racking mechanism microswitch fails to operate.	De-energize the motorization from the LV cabinet. Use the manual operation procedure to manually rack out the racking mechanism. Contact the local Schneider Electric representative to evaluate the motorized operation.
Electromagnet Blocking the Racking Mechanism
Cannot push the red racking/emergency trip push button of the racking mechanism despite electromagnet activation.	Electromagnet is not supplied or power supply value is inadequate.	Check the electromagnet power supply (connection, wiring continuity, supply voltage value). If the electromagnet is correctly supplied, contact the local Schneider Electric representative.
	The electromagnet is mechanically locked.	Contact the local Schneider Electric representative.
Red racking/emergency trip push button of the racking mechanism can be operated despite electromagnet being powered off.	Electromagnet shaft is blocked and no longer locks the red racking/emergency trip push button.	Check for possible physical causes of the blockage. If necessary, contact the local Schneider Electric representative.