Gamatronic Electronic Industries Ltd.
Power+ Technical Guide
67
Figure
6-2: Internal Battery Drawer – Exploded View
6.1.2 EXTERNAL
BATTERIES
External batteries are housed in separate cabinets.
These batteries are connected to the system by heavy duty cables, care must be taken to
ensure correct polarity. Overall voltage may be as high as to -, i.e. +435vDC and –
435vDC with respect to ground/earth. Precautionary measures must be taken whenever
connecting the battery or servicing the battery cabinets.
6.2
INSTALLING AND CONNECTING THE BATTERIES
As shown in the diagram, the DC output cable from the batteries is connected directly to the small
Anderson connectors on the UPS rear panel.
WARNING: When connecting the batteries to the UPS:
y
The UPS’s AC INPUT circuit breaker must be in the OFF position,
AND
y
The battery circuit breaker must be in the OFF position.
WARNING: After connecting the batteries to the UPS, do not turn on the battery circuit breaker until the
UPS
’
s AC INPUT circuit breaker is turned on.
Cables from battery banks are connected to the Anderson connectors on the DC distribution
shelf as indicated in Figure
