26
UPS for 400 Vac Grid, Installation Guide, doc. rel. 3.0
5.
Verify that voltage between neutral and ground is between 0 and 2 Vac. (if not there
may be an issue with the grounding).
6.
Check the dc voltage at the switch of the battery cable. Measure the voltage between
the
plus
side and battery Midpoint, and between the
minus
side and battery Midpoint.
Verify that the readings you get are at least +380 V and -380 V.
7.
FAST FUSES (SEMICONDUCTOR FUSES) must be used between the battery and the
Gamatronic UPS. For example, the Ferraz Shawmut A70QS fuse (F1, F2, F3 and F4 in
Figure 12 and Figure 13.
Be sure to verify proper phase order.
8.
For initial startup to take place, the battery must be connected to the UPS and must be
available.
3.3.4.
Cabling
This section explains UPS cabling and connection requirements.
Warning:
the UPS leaves the factory with the bypass and rectifier ac input
terminals bridged to allow for single feed installation. If you desire a dual
feed installation remove the jumpers from each input phase.
3.3.4.1.
The Ground Line
WARNING! HIGH TOUCH CURRENT!
EARTH CONNECTION ESSENTIAL BEFORE CONNECTING SUPPLY.