ABB Fimer PVS980-58-4348kVA-I, Руководство по пусконаладке и техническому обслуживанию, Страница: 11 / 58

Safety instructions 9
•
Open the optional 3-phase output switch (-Q62) and the 1-phase output circuit
breakers (-F70 and optional -F63).
4. Make sure that there is no AC or DC voltage present.
•
Use a voltage detector with nominal voltage of 1500 V DC and minimum withstand
voltage of 3000 V DC (in rare fault cases the voltage on the DC terminal can be
two times the system voltage). The detector must be rated for outdoor use, and
must have a self-testing feature to ensure that it works correctly. Notice the
weather conditions of the site when you do the measurements: do not measure in
wet conditions. Do not use a multimeter.
•
Verify that the voltage between the AC busbars and the grounding (PE) busbar is
close to 0 V.
•
Make sure that the voltage between the inverter AC output terminals (L1, L2, L3)
[i] and the grounding (PE) busbar [ii] is close to 0 V. Measure every phase-to-
phase and phase-to-ground voltage (L1-L2, L1-L3, L2-L3, L1-GND, L2-GND and
L3-GND).
•
Verify that the voltage between the DC+ and DC- input terminals [iii] is close to
0 V.
5. Install temporary grounding. Connect the AC and DC busbars to the PE with a
temporary grounding tool. Temporary grounding must withstand the available short-
HV ring main unit (RMU)
External
auxiliary
power
a
b
b
c
i
ii
iii