Handling The Batteries; Backfeed Protection - Chloride 70-NET Bedienungsanleitung

INSTALLATION CHLORIDE 70-NET 10 - 40KVA

4.9. HANDLING THE BATTERIES

Warning
Batteries are a potential source of danger due to their electrical charge and chemical composi-
tion. Therefore observe the battery handling instructions of the manufacturer. These usually can
be found in the material which accompanies the shipment.
Recharging batteries
Notice
When recharging, observe the indications on the packaging
Exchanging batteries
Notice
Before replacing batteries, both the batteries in the cubicle, as well as those to be installed must
be fully charged.
Connecting external batteries
Warning
If a battery has been disconnected and is to be reconnected, the battery isolator may only be re-
connected after you have made certain that voltage with the correct polarity is present in the in-
termediate circuit (see "Connecting the batteries" on page 18).

4.10. BACKFEED PROTECTION

This feature of 70-NET shall prevent any potential risk from electric shock on the UPS
bypass input AC terminals in the event of failure of the bypass static switch SCR.
Installation of backfeed protection
On customers side an additional external isolation device (magnetic contactor, MC or min-
imum voltage tripping device) must be provided as shown in para. 11 below. The isolation
device must be able to carry the UPS input current (see resp. table of basic UPS operating
instructions).
The isolation device has to be installed in the bypass source path if two mains supplies are
available (see 5.1.4 of IEC/EN 62040-1-1).
Common mains feeding
If UPS with backfeed protection shall be feeded from one source only please connect U ,
2
V , W , (reserve/mains 2) with U , V , W (mains 1) and N (reserve/mains 2) with N (mains
2 2 1 1 1
1) inside feeding customers distribution. Cable bridge between input terminals of the UPS
may not be connected.
Page 20 User Handbook - 10H52163PAMC rev.9 - 06/2008