Start-Up

This section contains instructions for starting up SureSeT metal-clad indoor switchgear with Square D™ brand EvoPacT circuit breakers and VT/CPT auxiliary devices. All safety precaution items stated below and throughout this user guide must be followed prior to working and throughout all procedures. Training of personnel for final start-up can be provided. Continue to treat the equipment per the instructions found in the section Moisture Contamination Avoidance and Mitigation until the equipment is under normal operation. This equipment does not achieve its ratings until it is installed per record/as-built drawings, installed per the instructions contained in this document, and has operational environmental controls with appropriate settings to help mitigate environmental influences. Contact the local Schneider Electric representative for information.

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 be installed, operated, and serviced only by qualified electrical personnel. Only qualified personnel familiar with medium voltage equipment are to perform work described in this set of instructions. Workers must understand the hazards involved in working with or near medium voltage circuits. Operate the electrical equipment only in the environment for which it was designed. Perform work on the equipment only after reading and understanding all of the instructions contained in this user guide and other associated user guides. Turn off all power source(s) to this equipment before working on or inside the equipment. Always use a properly rated voltage sensing device to confirm power is off. Before performing visual inspections, tests, or maintenance on this equipment, disconnect all sources of electric power. Assume all circuits are live until completely de-energized, tested, and tagged. Pay particular attention to the design of the power system. Consider all sources of power, including the possibility of backfeeding. Also, check interconnection diagrams and make sure there are no potential backfeed sources. Never disconnect the main trip source of energized equipment. Always practice lock-out and 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. Circuit breaker and switch contacts must be open and all springs discharged before attempting to open any circuit breaker or auxiliary compartment doors or performing maintenance work, disconnection, or removal of a circuit breaker. Move circuit breakers to the test/disconnected position before attempting to open any circuit breaker or auxiliary compartment doors or removing rear compartment covers. Conduct electrical testing to confirm no short-circuits were created during installation, maintenance, or inspection. Never insert a circuit breaker into a circuit breaker compartment that is not complete and functional. 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. Failure to follow these instructions will result in death or serious injury.

DANGER

hazard of electric shock, explosion, or arc flash Properly close all bus joint boots before energizing this equipment. Review the equipment and site drawings to determine if the top or bottom contacts in the circuit breaker compartment and in the switchgear section are the line side. Both can be energized when the circuit breaker is removed from the compartment. Do not allow the ambient operating temperatures to exceed the specified limits. Provide adequate ventilation at all times to the equipment. Clean, dry, filtered air should be supplied. The ambient operating air must not be polluted by dust, particulates, smoke, corrosive and/or flammable gases, vapors, or salt. Protect the equipment from foreign objects and rodents. Disconnect all high-voltage to the switchgear before accessing the main bus compartment. Properly terminate auxiliary cables and the auxiliary cable shields. The cable shielding must be grounded at both ends of termination to the ground bus of each section and the cable stress cones must have adequate clearance from sources of ground potential and from other phases. Properly discharge the residual charge on any previously energized auxiliary cables prior to performing work in the equipment. Do not use liquid fire extinguishers or water on electrical fires. Before extinguishing fires within the switchgear, be absolutely certain the main power source is disconnected and the main and all feeder circuit breakers are open. Carefully inspect the work area and remove any tools and objects left inside the equipment. Replace all devices, doors, barriers, plates, panels, and covers before racking the circuit breaker in or out of the connected position and before turning on power to this equipment. Remove the temporary source of low-voltage power prior to energizing. All instructions in this user guide are written with the assumption that the customer has taken these measures before performing maintenance or testing. All personnel involved in the start-up operation should be thoroughly familiar with the information in this user guide and the customer order drawings that were provided before working on this equipment. Failure to follow these instructions will result in death or serious injury.

To start the switchgear, follow these steps:

1. Vacuum out every compartment to remove dust, spiderwebs, etc. Remove all loose parts, tools, miscellaneous construction items, and litter. Wipe off the insulation with a clean, dry, lint-free cloth. For proper cleaning practices refer to the section Cleaning.

2. Make sure all insulating boots are installed and properly closed.

3. Replace all the main bus access covers and any other barriers or covers which were removed during installation.

4. Install the rear compartment covers.

5. Connect the battery charger and batteries (if used) to the switchgear control bus according to the customer order drawings.

6. Unblock all the relays and set to the relay schedule. Using a relay tester, verify the settings and electrical operation of each relay.

7. Make sure the control power transformer drawer has the current-limiting fuses in place. Pull the drawer out onto the extension rails into the removed position.

8. Place all circuit breakers into the circuit breaker compartments in the test/disconnected position. Refer to the sections Circuit Breaker Installation and Operation and Circuit Breaker Installation in Switchgear for further information.

9. On the control power transformer, open the secondary circuit breaker and remove the primary fuses. Connect a temporary source of low-voltage power to the stationary secondary contact in the control power transformer compartment or any logical point (consult the customer schematic and wiring diagram).

10. With the circuit breaker compartment doors closed and properly latched (Front Compartments (Circuit Breaker/Auxiliary/LV) Door Operation), rack one circuit breaker at a time into the connected position and perform the following steps:

    1. Electrically close and open the circuit breaker with the door-mounted circuit breaker control panel.

    2. Open the circuit breaker by temporarily closing the trip output contacts of each protection relay.

    3. Reset the relay targets after each operation and rack the circuit breaker into the test/disconnected position.

11. Electrically operate using remote control methods and check the indicating lights/status indicators.

12. Operate all electrical interlocks, transfer schemes, lock-out relays, and other control functions to verify proper operation.

13. Test digital health monitoring system using instructions included in Schneider Electric document number QGH51397, <span><span><span style="font-style: italic; ">Substation Monitoring Device for Medium Voltage Switchgear</span></span></span>.

14. Test the communication network is performing as expected. Refer to the communication network drawings included in the customer order drawings.

15. Remove the temporary source of low-voltage power, make the permanent connection of low-voltage power and perform the following steps:

    1. Install the primary fuses on the control power transformer drawer.

    2. With the circuit breaker compartment doors closed and properly latched (refer to the section Front Compartments (Circuit Breaker/Auxiliary/LV) Door Operation), rack all circuit breakers into the connected position.

    3. Install the control power transformer and voltage transformer drawers into the connected position.

    4. Close the control power transformer secondary circuit breaker when ready.

    5. Close and properly latch all auxiliary compartment doors (refer to the section Front Compartments (Circuit Breaker/Auxiliary/LV) Door Operation).

16. Using a properly rated tester, verify again that trip voltage is available at circuit breaker terminals in each compartment.

17. Verify all rear compartment covers are installed and securely bolted.

18. Verify all front compartment doors are closed and properly latched (refer to the section Front Compartments (Circuit Breaker/Auxiliary/LV) Door Operation).

19. Energize the incoming high-voltage circuits.

20. Electrically close the main, primary circuit breaker to establish electrical service.

21. Electrically close the feeder primary circuit breakers as desired to establish electrical service.

22. Turn on desired loads one at a time.