
Operation
4.0ScopeOperation describes the
WARNING | Rectifier/charger |
| is closed. DC voltage is present in the DC bus. |
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Rectifier/charger
Figure
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| 7 | normal |
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22 |
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| 8 | input (1) |
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| 17 |
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| 16 |
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rectifier/
charger (A):
AC to DC power
*FUSE
Q1 isolation and
protection harmonic fliter
inverter (B): DC to AC power
isolation and protection:
Q5N
*FUSE
QF1: isolation and protection
battery (D):
backup power
| fault |
| bypass |
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19 | 20 | 21 | AC |
input (2) |
isolation: |
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Q4S | static bypass (C): |
maintenance bypass:
Q3BP
When the rectifier/charger is on, press the "inverter ON" button 7 on the control panel. The green "inverter" light 4 flashes.
4.1.2Emergency Power Off (EPO)The UPS emergency shutdown function is generally wired to a
IMPORTANT | After EPO/REPO, unit has to be reset by opening M2 feed (switch Q4S). Open |
| switch Q5N also, and then follow the procedure of single UPS for single unit or |
| parallel UPS for parallel units to |
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Operation | 4 — 1 |