Danfoss VACON 1000 Operating Manual page 99

Operating Guide | VACON® 1000
Table 16: Checklist of Commissioning Tasks to Do Before Power-up
Item
Make sure that the MV input/supply cables are connected
according to the system schematic and are properly
torqued.
Confirm the proper grounding of the MV cable shields,
motor, transformer, and drive cabinet.
See 6.6 Grounding.
Make sure that the MV input cable shield is grounded at
the drive end of the cable.
Make sure that the cables do not touch the electrical com-
ponents of the drive.
Per local electrical regulations, verify that the MV drive
cabinet is grounded to the earth ground of the facility.
Confirm that the drive cabinet ground busbars are con-
nected in all sections.
Check the resistances of the grounding connections. Mea-
sure both polarities.
Resistances to check:
• Control system grounding
• System safety grounding
• Cabinet support
• Transformer support
• External housing of the cooling fans
• Door locks/handles
The resistances must be approximately ≤0.5 Ω.
Confirm that the MV input and output cables have been
insulation tested according to local regulations.
Do an insulation test for the control power.
Measure the insulation resistance of the 220 V AC terminal
at the outgoing parts of the bypass switches QF11, QF12,
and QF13. Use a 2500 V insulation resistance tester.
The insulation resistance must be higher than 1 MΩ.
Do an insulation resistance test of the drive input and out-
put. See 8.8.1 Dielectric Withstand
Check that the optical fiber cables are in good condition
and the routing is done in a way that does not damage the
cables. For example, make sure that the maximum bend-
ing radius of the cables is not exceeded.
Danfoss A/S © 2024.12
(continued)
Comments
Test.
Date completed Employee
(dd/mm/yyyy)
AQ363633621020en-000401 / 172F3117D |
Commissioning
99