Commissioning

List of Checks and Inspections

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E or CSA Z462 or local equivalent. 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. Always use a properly rated voltage sensing device to confirm that power is off. Put back all devices, doors, and covers before turning on power to this equipment. Repair the installation immediately if an insulation fault occurs during operation. Failure to follow these instructions will result in death or serious injury.

When starting up new equipment, or following lengthy downtime, a general check takes just a few minutes. Such a check reduces the risk of a malfunction due to error or oversight.

The following table indicates the checks and inspections to be performed according to the event:

A: Insulation and Dielectric Strength Tests

CAUTION
HAZARD OF EQUIPMENT DAMAGE Insulation and dielectric strength tests must only be carried out by qualified electrical personnel. Failure to follow these instructions can result in injury or equipment damage.

Insulation and dielectric strength tests are carried out before the switchboard is delivered. These tests are subject to the currently applicable standards.

A: Insulation and Dielectric Strength Tests on MicroLogic 4 and 7 Trip Units

The MicroLogic 4 and 7 trip units have a second power supply (in addition to the power source provided by the current transformers) to power the earth-leakage protection even when the current demand is low. This power supply must be switched off when carrying out dielectric tests.

To switch off this power supply on the MicroLogic 4 trip unit during a dielectric test, follow this procedure.

WARNING
LOSS OF EARTH-LEAKAGE PROTECTION The dielectric switch must be in the retracted position while the circuit breaker is in use. Failure to follow these instructions can result in death, serious injury, or equipment damage.

A: Insulation and Dielectric Strength Tests on VigiPacT Add-on Devices

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. Insulation and dielectric strength tests must only be carried out by qualified electrical personnel. Disconnect all power sources before performing maintenance inspections.Assume that all circuits are live until they are de-energized, tested, grounded, and tagged. Consider all sources of power, including the possibility of backfeeding and control power. Always use a properly rated voltage sensing device to confirm that power is off. Replace all devices, doors, and covers before turning on power to this equipment. The protective cover for the connections must be reconnected without fail following dielectric tests. Failure to follow these instructions will result in death or serious injury.

CAUTION
HAZARD OF EQUIPMENT DAMAGE Disconnect the protective cover on the front of the VigiPacT Add-on before performing insulation and dielectric strength tests. Failure to follow these instructions can result in injury or equipment damage.

VigiPacT Add-on and VigiPacT Add-on Alarm are electronic devices which need to be disconnected before dielectric tests. Follow this procedure before carrying out a dielectric test:

Step	Action
1	Before carrying out a dielectric test, remove any seal from the VigiPacT Add-on mounting screw then unscrew the screws from the protective cover for the connections (A): Two screws for 3P circuit breakers Three screws for 4P circuit breakers
2	Remove the protective cover. NOTE: Removing the protective cover on the front of the module (A) automatically disconnects the VigiPacT Add-on.
3	After carrying out a dielectric test, put the protective cover (A) back into place. NOTE: If the protective cover is not put back: There is a risk of direct contact with connections. There is a risk of an insulation fault downstream.
4	Tighten the screws of the protective cover.
5	Replace the seal.	–
6	After performing the dielectric test, carry out an earth-leakage test.	–

A: Dielectric Strength Tests with PowerTag Energy

PowerTag Energy is an electronic device which needs to be disconnected before dielectric tests. Follow this procedure before carrying out a dielectric test:

Step	Action
1	To enable a dielectric test to be carried out, turn the dielectric switch (A) counterclockwise from the vertical position to the TEST position (horizontal) by using a flat screwdriver. Result: The switch pops out when the screwdriver is removed.
2	After carrying out a dielectric test, put the switch back to the vertical position: First, push in the switch.
3	Keeping the switch pushed in, turn it clockwise from the TEST position to the RUN position (vertical). Result: The switch stays retracted when the screwdriver is removed.

B: Inspect Switchboard

Check that the circuit breakers are installed:

• In a clean environment without waste from assembling the equipment (such as wiring, tools, shavings, metallic particles)

• In a properly ventilated switchboard (unobstructed ventilation grills)

C: Check Compliance with the Diagram

Check that the circuit breakers comply with the installation diagram:

• Identification of the feeds on the front of the circuit breakers

• Rating and breaking capacity (indications on the faceplate label)

• Identification of the trip units (type, rating)

• Presence of additional functions (VigiPacT Add-on earth-leakage protection, motor mechanism, rotary handle, control or indication auxiliaries, locking, sealing)

• Protection settings (overload, short-circuit, earth-leakage):

  • Thermal-magnetic and MicroLogic 2 and 4 electronic trip units: visually check the position of the adjustment dials

  • MicroLogic 5, 6 and 7 electronic trip units: visually check the position of the adjustment dials for the main settings and use EcoStruxure Power Commission software to check in detail

D: Inspect Mechanical Equipment

Visually inspect the general state of the circuit breaker. Check the following items:

• Terminal shields and interphase barriers

• Escutcheon

• Trip unit

• Case

• Chassis

Check the equipment integrity: a circuit breaker found with a cracked case or burn marks must be immediately taken out of service and replaced.

Check the mounting and mechanical strength:

• Of circuit breakers in the switchboard.

• Of auxiliaries and accessories on the circuit breakers:

  • Rotary handles or motor mechanisms

  • Installation accessories (such as terminal shields and escutcheons)

• Of the chassis (withdrawable circuit breaker)

• Of locks, padlocks and padlock support tabs

E: Check Connections

Check the tightening torque of the power connections and auxiliary circuit connections, as described in the instruction sheets.

F: Check Mechanical Operation

Check the circuit breaker mechanical operation:

• Opening, closing and resetting

• Tripping with the push-to-trip button

• Tripping by MN/MX control auxiliaries

• Opening, closing, resetting by motor mechanism in automatic and manual mode

G: Check Electronic Trip Units and VigiPacT Add-on Devices

Check that the following are working correctly:

• MicroLogic electronic trip units, with the aid of specific maintenance interfaces:

  • Pocket battery

  • Service Interface and a PC running EcoStruxure Power Commission software

  • USB maintenance interface

  NOTE: For trip units without test port, check the functions of the trip unit using primary injection.

• OF, SD or SDE indication contacts

• SDx or SDTAM modules

• VigiPacT Add-on devices and SDV indication contact, by operating the test button T on the front (this test checks the whole measurement system and tripping on earth-leakage faults)

• Wireless indication auxiliaries

H: Check Pairing of Wireless Devices with Gateway or Panel Server

Check that wireless communication with gateway or Panel Server is working correctly:

• For PowerTag Energy, LED is blinking green each time data is sent (every 5 seconds by default)

• For wireless indication auxiliaries, LED is blinking green each time data is sent (every 8 hours, or when status changes).

I: Check Communication

Check that the communication through the communication network works correctly. Refer to DOCA0093EN, ULP System (IEC Standard) – ULP (Universal Logic Plug) System – User Guide.

J: Clean Equipment

To avoid dust deposits that could affect the circuit breaker mechanical operation, clean the circuit breakers when performing maintenance:

• For non-metallic parts: always use a dry cloth. Do not use cleaning products.

• For metallic parts: preferably use a dry cloth. If a cleaning product must be used, do not apply or splash the product onto non-metallic parts.