Inspection, Maintenance, and Troubleshooting

This chapter contains the following sections:

Inspection/Preventative Maintenance Guidelines

This section contains information on inspecting and performing preventive maintenance on HVL/cc Metal-Enclosed Switchgear.

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-2011, or CSA Z462. This equipment must only be installed and serviced by qualified electrical personnel. Turn off all power supplying this equipment before working on or inside equipment. The Live Line Indicator is not an indicator of the absence of voltage. Always use a properly rated voltage sensing device to confirm power is off. Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding. Replace all devices, doors, and covers before turning on the 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-2011, or CSA Z462.
This equipment must only be installed and serviced by qualified electrical personnel.
Turn off all power supplying this equipment before working on or inside equipment.
The Live Line Indicator is not an indicator of the absence of voltage.
Always use a properly rated voltage sensing device to confirm power is off.
Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding.
Replace all devices, doors, and covers before turning on the power to this equipment.

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

Inspection

Follow the guidelines and procedures outlined in this section when performing periodic inspections on the equipment.

Recommended Inspection Interval

Periodic inspection of the equipment is necessary to establish the conditions to which the units are subjected (see Recommended Maintenance Guidelines). The maximum recommended inspection interval is one year.

Inspection Procedure

The following is a minimal list of inspection procedures to perform to help ensure proper maintenance.

Bus and Connections. De-energize the primary and secondary circuits. Perform a standard sixty-cycle hi-pot test to measure bus insulation integrity (see Hi-Pot (Dielectric) Testing).
Inspect the connections for symptoms which indicate overheating or weakened insulation. Remove dust from the surfaces of the bus bars, connections, supports, and enclosures. Wipe clean with a solvent such as denatured alcohol. Only apply denatured alcohol with lint free cloths and take care to only use it on the surfaces of bus bars, connections, supports, and enclosures. Vacuum the equipment. Do not use compressed air to blow dust from the surfaces inside the switchgear.
Maintain the instruments, relays, and other devices according to the specific instructions supplied. Inspect the devices and their contacts for dust or dirt; wipe clean with a clean, lint free cloth as necessary. The maintenance schedule for individual devices, such as meters and relays, are based upon recommendations contained in the individual instruction manual for each device. Coordinate the various schedules with the overall maintenance program.
Inspect control wiring connections for tightness and damage.
Manually operate mechanical moving parts such as switch assemblies, interlocks, and doors.
Make sure all bus areas are well ventilated. Inspect grille work and air passages on indoor and outdoor switchgear to make sure they are free from obstruction and dirt accumulation. Clean aluminum filters on outdoor switchgear by removing and thoroughly back-flushing with soap and water. Replace the filters only after they are clean and dry.

Preventive Maintenance

Follow the guidelines and procedures in this section when performing preventative maintenance.

Maintenance Log

Keep a maintenance log (see Troubleshooting) for this equipment. List all inspection, service, and maintenance calls with dates as well as any corrective and preventive actions taken.

Preventative Maintenance Intervals

Periodic maintenance on the switchgear includes cleaning, lubrication, and exercising component parts. The interval between maintenance checks can vary depending upon the amount of usage and environmental conditions of each installation. This definition for periodic maintenance applies throughout this manual, unless otherwise noted.

Inspect the equipment immediately after abnormal or stressful operating conditions occur or after the equipment experiences a trip current.

Recommended Maintenance Guidelines

Component	Ideal Conditions*	Standard Conditions*	Aggressive Conditions*
Epoxy Switch Housing	Every ten years	Every five years	Every two years
Housing interior (all bus and mechanisms)	Every ten years	Every five years	Every two years
Housing	Every ten years	Every five years	Every two years

These inspection/maintenance guidelines cover only the switch and enclosure manufactured by Schneider Electric. If conditions cannot be established and documented, then the aggressive operating condition must be assumed.

These inspection/maintenance guidelines do not warrant any field connections, field modifications, or supersede any maintenance procedures or schedules recommended by component manufacturers.

Environmental Conditions

Ideal Conditions:

Unit is installed and commissioned in accordance with manufacturer’s instructions
Humidity below 40% and no dripping water
Indoor protected from weather
Minimum dust and air circulation
Ambient temperature between 32°F and –104°F (–0°C and +40°C)
No contact with any chemical agents (salt, H₂S, etc.)
No infestation of any animal life (rodents, insects)
No contact with any plant life (mold or other)
No earth movements
No damage to the unit of any kind
No mal-operation of any kind
No abnormally high number of operations (see Typical Life of HVL/cc (a) 25.8 and 38 kV, (b) 5 and 15 kV)
No abnormally high number of trips (see Typical Life of HVL/cc (a) 25.8 and 38 kV, (b) 5 and 15 kV)
No over-voltage or over-current (above ratings)
Thermal scanning of the joints at-least once a year

NOTE: Optional thermal IR scanning windows or an integrated thermal monitoring system package is available from Schneider Electric.

Standard Conditions:

All the above conditions listed under “Ideal Conditions” apply (see Recommended Maintenance Guidelines) with the exception of the following:

Bullet 2: Humidity below 60%.
Bullets 3 through 5: The unit may be indoors or outdoors but must not be subjected to regular extremes of weather (heavy rainstorms, dust storms, flooding, temperature cycles greater than 104°F (40°C), temperatures less than –22°F (–30°C), dense coastal fog or acid rain).
Bullet 8: No regular thick covering of leaves or other debris.

Aggressive Conditions:

Any environmental conditions, which do not satisfy one of the two above descriptions, must be deemed aggressive.

The product has been tested under ideal laboratory conditions to the values listed below.:

1000 Mechanical no load operations
100 Full load current interruptions

The device has been designed and tested to IEEE Std C37.20.4 and CSA C22.2, No.193 requirements. Typical Life of HVL/cc (a) 25.8 and 38 kV, (b) 5 and 15 kV illustrates the typical life of the equipment under ideal laboratory conditions. This chart represents an accumulated total (ksi) at greater than 80% power factor, less than 17.5 kV of the 600 A interrupter.

NOTE: Example: The device successfully interrupts a 600 A current (nameplate rating) 100 times or 100 A current 600 times.

The contact life can also be verified by performing a millivoltage or micrometer test. The value should not increase by 300% of the original value of 80 microohms using a 100 A test micrometer. The 1200 A disconnect has an electrical endurance (full load operations) of 18.

Typical Life of HVL/cc (a) 25.8 and 38 kV, (b) 5 and 15 kV

Replacement Parts

The contact life can also be verified by performing a millivoltage or micrometer test. The value should not increase by 300% of the original value of 80 microohms using a 100 A test micrometer.

Replacement Parts

Description	Part Number
Auxiliary Switch	25713203
Bulb, Push-button 120 V, 60 Hz	120 MB
Fuse, 10 A	BAF10
Mobil red grease #28	1615-100950
Handle, operator	3728693
Motor limit switch	25713203
Motor cut-off switch	25713203
Motor, Electric SEM & OTM
Motor 24 Vdc	SPK997932
Motor 48 Vdc	997933
Motor 125 Vdc/120 Vac	997934
Motor 250 Vdc/240 Vac	SPK997935
Fuses
Fuses for motor 24 Vdc	SPK29743211EE
Fuses for motor 48 Vdc	29743211DH
Fuses for motor 125 Vdc/120 Vac	SPK29743211CZ
Fuses for motor 250 Vdc/240 Vac	29743211CN
Coils
Opening and closing coil 24 Vdc	178024
Opening and closing coil 48 Vdc	178026
Opening and closing coil 125 Vdc	178030
Opening and closing coil 250 Vdc	178032
Opening and closing coil 120 Vac	178027
Opening and closing coil 240 Vac	178030
Air flters (NEMA 3R)	46011-560-01
Live line Indicators
Wiring harness	Contact Schneider Electric*
Replacement Lights	Contact Schneider Electric*
2.4–15 kV Capacitive standoff divider	Contact Schneider Electric*
25.8–38 kV Capacitive standoff divider	Contact Schneider Electric*
Phase Sequence Testing Unit	Contact Schneider Electric*
Strip heater for standard equipment	29904-00682
Class 1, Division 2 T3B rated heater	XP13020T3B
Fuse clip for Mersen CS-3 style fuses	80012-004-01
Fuse clip spring for Mersen CS-3 style fuses	80012-005-01

Typical Schematic

Corrective Maintenance

This section contains information on how to perform corrective maintenance on HVL/cc Metal-Enclosed Switchgear.

Medium Voltage Fuses

Medium voltage fuses provide over-current protection for the medium-voltage switch as well as short circuit interrupting protection up to the short-circuit current rating of the equipment. Schneider Electric HVL/cc equipment can use only Square D (or Bussmann equivalent) or Mersen current limiting fuses.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Use only Square D, Bussmann, or Mersen identical fuses that came with HVL/cc equipment. Do not substitute any other fuse. Failure to follow these instructions will result in death or serious injury.

Always follow the steps listed below before entering the fuse compartment to replace or perform maintenance on the fuses.

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-2011, or CSA Z462. This equipment must only be installed and serviced by qualified electrical personnel. Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment. Qualified electrical personnel must perform work in accordance with national and local electric codes. Perform such work only after reading and understanding all of the instructions contained in this bulletin. Turn off all power supplying this equipment before working on or inside equipment. The Live Line Indicator is not an indicator of the absence of voltage. Always use a properly rated voltage sensing device to confirm power is off. Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding. Before making any electrical connection, ensure that all leads to be connected are de-energized with proper safety grounds applied. Metal-enclosed switchgear have interlocks designed to minimize hazards to the user. It is not possible to eliminate every hazard with interlocks. The user of this device is responsible for recognizing the potential hazards, for wearing protective safety equipment, and for taking adequate safety precautions. Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual. Handle this equipment carefully and install, operate and maintain it correctly in order for it to function properly. Carefully inspect your work area and remove any tools and objects left inside the equipment. Replace all devices, doors, and covers before turning on the power to this equipment. All instructions in this manual are written with the assumption that the customer has taken these measures before performing maintenance or testing. 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-2011, or CSA Z462.
This equipment must only be installed and serviced by qualified electrical personnel.
Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment.
Qualified electrical personnel must perform work in accordance with national and local electric codes.
Perform such work only after reading and understanding all of the instructions contained in this bulletin.
Turn off all power supplying this equipment before working on or inside equipment.
The Live Line Indicator is not an indicator of the absence of voltage.
Always use a properly rated voltage sensing device to confirm power is off.
Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding.
Before making any electrical connection, ensure that all leads to be connected are de-energized with proper safety grounds applied.
Metal-enclosed switchgear have interlocks designed to minimize hazards to the user. It is not possible to eliminate every hazard with interlocks. The user of this device is responsible for recognizing the potential hazards, for wearing protective safety equipment, and for taking adequate safety precautions.
Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual.
Handle this equipment carefully and install, operate and maintain it correctly in order for it to function properly.
Carefully inspect your work area and remove any tools and objects left inside the equipment.
Replace all devices, doors, and covers before turning on the power to this equipment.
All instructions in this manual are written with the assumption that the customer has taken these measures before performing maintenance or testing.

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

If equipped, verify if blown fuse indicator is showing a fuse has blown / opened.
De-energize (turn off) the switch. Use a properly rated voltage sensing device to test and verify that the power is off. Perform lock-out tag-out on all upstream or downstream sources that could energize the primary fuses or control power to help prevent inadvertent closure or energization.
Place the switch in the OPEN position. The load-side LLIs must not be on. Close the ground for the switch if so equipped (see Operating the Ground Switch (if equipped), Switchgear Operation (OTM), and Switchgear Operation (SEM).

NOTE: Always replace all three fuses even if only one has blown to maintain system coordination. When one fuse blows, the other two fuses may experience an over-current condition and could also be damaged.
Replace the load-side panel. Verify that it is properly placed in the interlock slot and all hooks are engaged.
Open the ground switch first (if so equipped), then the main switch can be closed re-energizing the circuit.

Live Line Indicator (LLI) Replacement

Live Line Indicator (LLI) lights are connected by a capacitive circuit to the main bus bars on the line or load side of the HVL/cc switch. LLI lights connected to the load side of the HVL/cc switch are mounted on the front of the switch mechanism cover. LLI lights connected to the line side of the HVL/cc switch are mounted on the front door of the Low Voltage Compartment.

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-2011, or CSA Z462. This equipment must only be installed and serviced by qualified electrical personnel. Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment. Qualified electrical personnel must perform work in accordance with national and local electric codes. Perform such work only after reading and understanding all of the instructions contained in this bulletin. Turn off all power supplying this equipment before working on or inside equipment. The Live Line Indicator is not an indicator of the absence of voltage. Always use a properly rated voltage sensing device to confirm power is off. Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding. Before making any electrical connection, ensure that all leads to be connected are de-energized with proper safety grounds applied. Metal-enclosed switchgear have interlocks designed to minimize hazards to the user. It is not possible to eliminate every hazard with interlocks. The user of this device is responsible for recognizing the potential hazards, for wearing protective safety equipment, and for taking adequate safety precautions. Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual. Handle this equipment carefully and install, operate and maintain it correctly in order for it to function properly. Carefully inspect your work area and remove any tools and objects left inside the equipment. Replace all devices, doors, and covers before turning on the power to this equipment. All instructions in this manual are written with the assumption that the customer has taken these measures before performing maintenance or testing. 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-2011, or CSA Z462.
This equipment must only be installed and serviced by qualified electrical personnel.
Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment.
Qualified electrical personnel must perform work in accordance with national and local electric codes.
Perform such work only after reading and understanding all of the instructions contained in this bulletin.
Turn off all power supplying this equipment before working on or inside equipment.
The Live Line Indicator is not an indicator of the absence of voltage.
Always use a properly rated voltage sensing device to confirm power is off.
Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding.
Before making any electrical connection, ensure that all leads to be connected are de-energized with proper safety grounds applied.
Metal-enclosed switchgear have interlocks designed to minimize hazards to the user. It is not possible to eliminate every hazard with interlocks. The user of this device is responsible for recognizing the potential hazards, for wearing protective safety equipment, and for taking adequate safety precautions.
Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual.
Handle this equipment carefully and install, operate and maintain it correctly in order for it to function properly.
Carefully inspect your work area and remove any tools and objects left inside the equipment.
Replace all devices, doors, and covers before turning on the power to this equipment.
All instructions in this manual are written with the assumption that the customer has taken these measures before performing maintenance or testing.

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

To replace LLIs:

Turn off all power supplying the equipment. Use a properly rated voltage sensing device to confirm that the power is off.
Remove the two mounting screws.
Pull the LLI outside of the cover.
Unplug the wiring harness.
Plug the wiring harness into the new LLI head.
Push the LLI back into the cover opening.
Replace the two mounting screws.
Restore power to the equipment.

If the lights on the LLI do not light up repeat steps 1–8 above. If after repeating the procedure results are not satisfactory, turn off all power to the equipment and contact your Schneider Electric representative.

Class 1, Division 2 Maintenance Requirements

Follow the maintenance requirements below for Class 1, Division 2 rated switchgear used in hazardous areas.

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-2011, or CSA Z462. This equipment must only be installed and serviced by qualified electrical personnel. Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment. Qualified electrical personnel must perform work in accordance with national and local electric codes. Perform such work only after reading and understanding all of the instructions contained in this bulletin. Turn off all power supplying this equipment before working on or inside equipment. The Live Line Indicator is not an indicator of the absence of voltage. Always use a properly rated voltage sensing device to confirm power is off. Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding. Before making any electrical connection, ensure that all leads to be connected are de-energized with proper safety grounds applied. Metal-enclosed switchgear have interlocks designed to minimize hazards to the user. It is not possible to eliminate every hazard with interlocks. The user of this device is responsible for recognizing the potential hazards, for wearing protective safety equipment, and for taking adequate safety precautions. Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual. Handle this equipment carefully and install, operate and maintain it correctly in order for it to function properly. Carefully inspect your work area and remove any tools and objects left inside the equipment. Replace all devices, doors, and covers before turning on the power to this equipment. All instructions in this manual are written with the assumption that the customer has taken these measures before performing maintenance or testing. 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-2011, or CSA Z462.
This equipment must only be installed and serviced by qualified electrical personnel.
Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment.
Qualified electrical personnel must perform work in accordance with national and local electric codes.
Perform such work only after reading and understanding all of the instructions contained in this bulletin.
Turn off all power supplying this equipment before working on or inside equipment.
The Live Line Indicator is not an indicator of the absence of voltage.
Always use a properly rated voltage sensing device to confirm power is off.
Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding.
Before making any electrical connection, ensure that all leads to be connected are de-energized with proper safety grounds applied.
Metal-enclosed switchgear have interlocks designed to minimize hazards to the user. It is not possible to eliminate every hazard with interlocks. The user of this device is responsible for recognizing the potential hazards, for wearing protective safety equipment, and for taking adequate safety precautions.
Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual.
Handle this equipment carefully and install, operate and maintain it correctly in order for it to function properly.
Carefully inspect your work area and remove any tools and objects left inside the equipment.
Replace all devices, doors, and covers before turning on the power to this equipment.
All instructions in this manual are written with the assumption that the customer has taken these measures before performing maintenance or testing.

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

DANGER
Hazard of Explosion Follow instructions provided as NEC class 1 Division 2 environments may contain ignitable gases. Failure to follow these instructions will result in death or serious injury.

When replacing heaters, use only explosion proof T3B rated heaters. Seal wiring connections and openings with silicone before turning on the power.
When replacing LLIs, seal connections at the insulators with silicone before turning on the power.
Use only non-indicating fuses.
Test ports on the LLI heads are factory plugged and are not for use for Class 1, Division 2 rated equipment.
Use only manually operated switch mechanisms (OTM and SEM).

Class 1, Division 2 Required Features

NOTE: All wires must be permanently connected and sealed with silicone.
LLI test ports should be plugged.

Troubleshooting

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-2011, or CSA Z462. This equipment must only be installed and serviced by qualified electrical personnel. Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment. Qualified electrical personnel must perform work in accordance with national and local electric codes. Perform such work only after reading and understanding all of the instructions contained in this bulletin. Turn off all power supplying this equipment before working on or inside equipment. The Live Line Indicator is not an indicator of the absence of voltage. Always use a properly rated voltage sensing device to confirm power is off. Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding. Before making any electrical connection, ensure that all leads to be connected are de-energized with proper safety grounds applied. Metal-enclosed switchgear have interlocks designed to minimize hazards to the user. It is not possible to eliminate every hazard with interlocks. The user of this device is responsible for recognizing the potential hazards, for wearing protective safety equipment, and for taking adequate safety precautions. Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual. Handle this equipment carefully and install, operate and maintain it correctly in order for it to function properly. Carefully inspect your work area and remove any tools and objects left inside the equipment. Replace all devices, doors, and covers before turning on the power to this equipment. All instructions in this manual are written with the assumption that the customer has taken these measures before performing maintenance or testing. 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-2011, or CSA Z462.
This equipment must only be installed and serviced by qualified electrical personnel.
Only qualified electrical personnel familiar with medium voltage circuits should perform the instructions in this bulletin. Personnel must understand the hazards involved in working with or near medium voltage equipment.
Qualified electrical personnel must perform work in accordance with national and local electric codes.
Perform such work only after reading and understanding all of the instructions contained in this bulletin.
Turn off all power supplying this equipment before working on or inside equipment.
The Live Line Indicator is not an indicator of the absence of voltage.
Always use a properly rated voltage sensing device to confirm power is off.
Before performing visual inspections, tests, or maintenance on the equipment, disconnect all sources of electric power. Assume that all circuits are live until they have been completely de-energized, tested, grounded, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding.
Before making any electrical connection, ensure that all leads to be connected are de-energized with proper safety grounds applied.
Metal-enclosed switchgear have interlocks designed to minimize hazards to the user. It is not possible to eliminate every hazard with interlocks. The user of this device is responsible for recognizing the potential hazards, for wearing protective safety equipment, and for taking adequate safety precautions.
Do not make any adjustments to the equipment or operate the system with safety features removed. Contact your local Schneider Electric representative for additional instructions if the device does not function as described in this manual.
Handle this equipment carefully and install, operate and maintain it correctly in order for it to function properly.
Carefully inspect your work area and remove any tools and objects left inside the equipment.
Replace all devices, doors, and covers before turning on the power to this equipment.
All instructions in this manual are written with the assumption that the customer has taken these measures before performing maintenance or testing.

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

The following tables list conditions, mechanisms, and solutions to problems that may occur in HVL/cc Metal-Enclosed Switchgear.

Troubleshooting General Issues

Condition	Mechanism	Action
Live-line Indicator will not illuminate	ALL	Test for voltage using a properly rated voltage sensing device on two of the test ports on the Live-line indicators Check that the switch is closed Check the Live-line block is okay Check that the fuses are installed Check that the fuses are not blown (blown fuse indicator in Lexan cover if provided) Check that the incoming cables are live
Load-side panel cannot be removed or installed	ALL	Check that switch is open and in the grounded position (if applicable)
Ground switch cannot be operated	ALL	Check that the switch is open Check if fuse/load-side panel is properly installed
Switch cannot be operated	ALL	Check that grounding switch is open Check if fuses are installed and not blown (FuseLogic) Check if fuse/load-side panel is properly installed

Troubleshooting Mechanism Issues

Condition	Mechanism	Action
Electrical operation impossible but manual operation is possible	ALL	Check for loose connections Check coil circuit Check control fuses Check electrical interlocks motor cutoff switch Main interrupter cutoff switch Open/Close microswitches Check grounding switch position and cutoff switch Check the configuration of the CIP1 subassembly (see Over-Toggle Mechanism (OTM) and Stored Energy Mechanism (SEM))
Operation impossible following an electrical closing	SEM and OTM (with motor)	Use the operating handle to apply torque in the closing direction until the end position is reached, then check voltage supply so that adequate power is available.
Insertion of operating handle is impossible following electrical closing	SEM and OTM (with motor)	Open switch using backup power. Lock-out the electrical operating mechanism. Push the back of the switch shaft in the closing direction using a large screwdriver to allow insertion of handle, Using a properly rated voltage sensing device, check voltage so that the correct power is supplied to the motor.

Maintenance Log

DATE	INITIALS	ACTION