Figure 15: Connecting The Battery To The Ups; Table 7: Suggested Fuse And Circuit-Breaker Values - Gamatronic Centric 3X480 VAC Installation Manual

For the 120 kw and 240 kw models

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User manual (127 pages)

Table Of Contents

Table of Contents

4.3.4.4

ASSEMBLING AND CONNECTING THE BATTERIES

Note: The Centric supports the use of standard lead-acid batteries, and also lithium-ion batteries. If you

plan to use lithium-ion batteries, consult with your Centric dealer to be sure that the battery setup

parameter values are appropriate for the batteries you will be using.

It is recommended that the battery cabinet(s) be located as close to the UPS as is practical.

Assemble the batteries within the battery cabinet.

Figure 15 shows the recommended connection to the UPS, which includes two fuses inside of each

battery cabinet, one on the plus line and one on the minus line. The recommended fuse values for

one set of two cabinets of 20 x 12 Vdc each are shown in Figure 15, according to the output capacity

of the UPS.

Figure 15 assumes that the battery fuses can be easily disconnected when desired.

Measure the dc voltage at the main terminals of the battery cabinets. Verify that you obtain values of

at least 240 Vdc for each battery cabinet, or at least 480 Vdc across the main battery CB.

Connect the battery set to the Centric's positive ("+") battery bus bar, negative ("–") battery bus bar,

and Neutral bus bar. Refer to Figure 15 and Table 7. Observe proper polarity!

The fuses between the battery cabinets and the Centric (F1, F2, F3, and F4 in Figure 15 must be

FAST FUSES (SEMICONDUCTOR FUSES); for example, the Ferraz Shawmut A70QS fuse.

For initial startup to take place the battery must be connected to the UPS and available.

Note: Fuse values in Table 7 are for fuses F1 through F4 in Figure 15 and Figure 16, and are

based on 10-minute backup time at full load. If longer backup time is needed, please

consult with your dealer.

UPS capacity (kW)

Max. current (A)

Fast fuse (A)

Circuit breaker (A)

AMATRONIC