inform Pyramid Plus, Руководство по эксплуатации и установке

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6.6 Transfer to Maintenance By-Pass Mode
1)
Bring S6 (static by-pass) into “STATIC BYPASS” position of either one of the UPS’s.
2)
See that the red coloured by-pass leds on the front panels of both UPS’s are lit. (Static bypass
operation)
3)
Turn on S3 switches (maintenance bypass) of both UPS’s.
4)
Turn off S4 switches (AC output) of both UPS’s.
5)
Turn off S1 switches of both UPS’s.
6)
Turn off S2 switches (AC output) of both UPS’s.
7)
Turn off S5 (optional battery circuit breaker ) or remove battery fuses of both UPS’s.
Now, the UPS’s are completely turned off but the load is supplied by the AC-input via the
Maintenance By-Pass switch.
WARNING!!! Inside the UPS’s the following points will be on operation:
* By-pass AC input mains terminals
* Maintenance by-pass switch
* UPS’s output terminals
Now your load is completely supplied by the maintenance by-pass supply and the UPS’s are 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.
6.7 Transfer from Miantenance By Pass to Inverter Mode
With the S6 switches (static bypass) of the inverters (at least one of them) in “STATIC
BYPASS” position, turn on the parallel connected UPS’s UPS1 and UPS2 as follows:
1)
Turn on the S2 switches (static bypass) of both UPS’s.
2)
Turn on S4 switches (AC output) of both UPS’s.
3)
Turn on S1 switches (inverter input) of both UPS’s.
4)
Turn on the Battery Circuit Breakers S5 (optional) or insert the battery fuses of both UPS’s to
connect the battery groups to the UPS’s for uninterrupted operation.
5)
When “MAINT SWITCH ON!” message appears on LCD, turn off S3 switches (maintenance
bypass) of both UPS’s.
6)
Bring S6 switches (static bypass) of both UPS’s to “NORMAL” position.