Kohler PowerWAVE 8000DPA RI (S2) Series, Руководство пользователя, Страница: 70 / 88

5: Operation
62
TS_616_08 PW8000DPA ST (S2) User Manual 21/4/22
5.4 How to transfer the load to the maintenance bypass
It may be necessary to transfer the load to the maintenance bypass supply to perform certain UPS service or maintenance
operations – for example, when replacing a module in non-redundant system.
This procedure is usually carried out by a trained service engineer and is not part of the normal day-to-day management of
the UPS system.
Initial conditions:
This procedure assumes one of the following two initial conditions.
1. The UPS system is operating normally, ‘on inverter’
In which case continue at step 3 below:
2. The UPS system is operating with the load ‘on bypass’ due to either
• a system fault
• severe overload
• loss of redundancy
• or operating in ‘ECO’ mode
In which case continue with step 7 below:
Transfer the load to the UPS static bypass:
3. On the UPS control panel (of any UPS module) press the
ENTER
key once to access the menu system.
4. Using the
UP/DOWN
keys, move the cursor so that it is adjacent to
COMMANDS
and then press the
ENTER
key.
5. Using the
UP/DOWN
keys, move the cursor so that it is adjacent to
LOAD TO BYPASS
and then press the
ENTER
key.
a) The UPS system will transfer the load to static bypass (on all UPS modules).
6. On the module control panel(s), verify that:
a) The
INVERTER
LED has extinguished.
b) The BYPASS LED is green.
c) The LCD displays
LOAD NOT PROTECTED
.
CAUTION: Before you carry out this procedure, warn the critical load user that the load will not be supplied with
processed, backed-up power once the transfer to maintenance bypass has been performed.
LINE 1
LINE 2 BY PASS
INVERTER
BATTERY
LOAD
LINE 1
LINE 2 BY PASS
INVERTER
BATTERY
LOAD
LINE 1
LINE 2 BY PASS
INVERTER
BATTERY
LOAD