AuCom MVE Series User Manual page 59

COMMISSIONING
Site Acceptance Test Procedure
Physical checks: Mechanical assemblies
•
Power Assembly

Before beginning the commissioning process, check that the power assembly has arrived in good condition and all
connections are correct.
1. All critical bolts on the power assembly are checked and marked in the factory. Check
that all marks are still aligned.
2. Check that all power connections are tightened to the correct torque
3. Check the fibre-optic connections for any loss/poor connection. Check also the fibre-optic
cables for any sign of visible damage or sharp bend.
4. Check the following connections:
• firing connections
gate-cathode leads
•
• pulse transformer leads at gate drive board
5. Check each phase arm visually for any sign of damage:
• Phase arm 1
• Phase arm 2
• Phase arm 3
Enclosure

Check that the enclosure contains all agreed components and is in a fit state for commissioning, including safety
precautions and adequate isolation between the low voltage and medium voltage compartments.
6. Check that all agreed components have been installed into the enclosure and have been
fitted correctly, with adequate insulation & tight connections (use 'N/A' if not fitted):
• power circuit as per electrical drawing, including terminations etc
cable connections
•
• earth bonding
• Isolator / earthing switch mechanism
• input / output bushing
7. Check that all LV connections < M5 are tight (eg low voltage control terminals).
8. Check that there is no debris, dust or other foreign material in the enclosure.
9. Check that the enclosure and floor (if metal) are earthed.
Physical checks: Electrical assemblies
•
Power supplies and subsystem

Test that the soft starter power supply and electrical subsystem show the expected characteristics.
1. Disconnect the power supply connector on the controller.
2. Disconnect the power supply and relay connector on the power interface board.
3. To check the SCRs, perform an insulation resistance test (megger) with a voltage range
500 ~ 1000 VAC.
L1~L3 to earth and T1~T3 to earth should be > 1 MΩ
•
• L1~T1, L2~T2, L3~T3 should be:
V02: 100 kΩ
V06: 300 kΩ
Sight insulation resistance values for motor, input and output cables etc, or witness
•
test performed by others.
58
| MVE User Manual (710-17074-00H)
V03: 200 kΩ V04: 200 kΩ
V11: 500 kΩ V13: 600 kΩ
Date Initial
Date Initial
Date Initial