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5.4 Transfer to Maintenance By Pass Mode 40 to 200kVA
This procedure should be followed when turning from normal operation to maintenance bypass.
This procedure can be used for supplying temporary mains voltage to the system during the
maintenance of the UPS or in case of failure.
1.
Press on the DOWN button when there is “COMMAND MENU” message on the front panel of
the UPS. Then press “ENTER” button.
2.
Press on the DOWN button when there is “ENTER <BYPASS>” message on the front panel of
the UPS. Then press “ENTER” button for 3 seconds. Static by-pass led lit and inverter led off.
Now your load is supplied via Static By-pass.
NOTE :
Using the procedure in 4.2.2.1 and 4.2.2.2 you can switch the load to by-pass
manually. (MANUAL BY-PASS)
3.
Take out the lock from the
S3
(maintenance bypass) switch.
4.
Turn on (into “1” position) the
S3
(maintenance bypass) switch.
5.
Turn off all the following switches into “0” position.
S1
(inverter input)
S2
(static bypass)
S4
(UPS output)
S5
(Battery circuit breaker or battery fuse)
WARNING!!!
Inside the UPS the following points will be on operation:
* By-pass AC input mains terminals
* Maintenance by-pass switch
* UPS output terminals
Now your load is completely supplied via maintenance by-pass and the
UPS is not operating.
WARNING!!!
During the maintenance or static by-pass the connected loads at the UPS output
are not protected against the mains (by-pass source) failure.
5.5 Transfer from Maintenance By Pass to Inverter Mode 10 to 30kVA
1.
While the
S3
switch in closed position ”
1
” (ON) ;turn on (into “
1
” position) the
F1-F2-F3-S1
(rectifier input fuses- inverter input),
S2
(static bypass) and
S4
(UPS output) Switch.
2.
Turn on (into “
1
” position) the
S1
(inverter input) switch.
3.
When “MAINT SWITCH ON!” message appears on the front panel, turn off (into “0” position) the
S3 (maintenance by-pass) switch. By this way the load will be fed from the static by-pass.
4.
See “STATUS NORMAL!” message on the front panel and the green inverter led lit.
5.
Turn on the
BATT.(+)
and
BATT.(-)
fuses into “
1
” (ON) position. Now the UPS system is in
normal operation. You can start-up your load.
