GEFRAN-SIEI ARTDrive Vector V2 400Vac Series, Instruction Manual

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ARTDrive V2 series - Instruction Manual Chapter 10 Preventive Maintenance • 379
Figure 10-1: Power-Down (De-energizing) Procedures
Figure 10-2: Power-Up (Re-energizing) Procedures
10.9.1 Dust Removal
Build up of dust on electrical components and wiring can damage
components and cause mis-operation.
Build-up of dust on components can increase operating temperature, reducing
their normal life. On standoff insulators, it can collect enough moisture to produce
a current path from bus bars to chassis ground.
Dust (especially metallic dust) on wire surfaces can cause
tracking
between
connector pins. Tracking is usually capacitive in nature and involves a build-up
of electrical charge along the wire surface.
To prevent potentially hazardous electric shock, power must be properly
de-energized before anyone is allowed to make any type of physical contact
with the electrical components or wiring of the drive.
When checking for zero ac or dc voltage, the high voltage detector must be
rated appropriately for the equipment voltages.
De-energizing the Drive
1. Check that the drive is stopped.
2. Open the main circuit breaker (external power) to de-energize the
drive, then lock-out and tag-out the external power.
3. Check the load side of the inverter for zero ac voltage.
4. Wait 5 minutes minimum to discharge the dc capacitors.
(Table 4.11.1)
Power must be properly re-energized to prevent personnel from having
potentially hazardous contact with dangerous voltages.
Re-energizing the Drive
1. Close and secure the drive cabinet doors.
2. Clear all locks and tags from the circuit breaker and drive.
3. Close all disconnects that were opened when de-energizing the drive.