Vertiv APM 0250kMK16FN02000, Руководство пользователя

Страница: 143 / 192

8.2.3 External Protective Device
W A R N IN G !
1. High earth leak age cu rren t: Earth co n n ectio n is critical befo re co n n ectin g th e in pu t su pply
(in clu din g bo th m ain s su pply an d battery).
2. T h e equ ipm en t m u st be earth ed in acco rdan ce with th e lo cal electrical co de o f practice.
Refer to External Protective Device.
8.2.4 Power Cable
The power cable wiring is similar to that of the UPS module. Refer to Wiring of Power Cable.
The bypass and rectifier input supplies must use the same neutral line input terminal. If the input has a current leakage
protective device, the current leakage protective device must be fitted upstream of the neutral line input terminal.
N O T E: T h e po wer cables (in clu din g th e bypass in pu t cables an d UP S o u tpu t cables) o f each UP S
m o du le sh o u ld be o f th e sam e len gth an d specificatio n s to facilitate lo ad sh arin g.
8.2.5 Parallel Cable
Shielded and double-insulated parallel cables available in lengths 5 m, 10 m and 15 m must be interconnected in a ring
configuration between the UPS modules, as shown in Figure 8.2 below. Method: connect a module parallel cable from its
PARA1 port to the PARA2 port of another module. Follow this method to connect other parallel cables.
The parallel port J3 is provided on the front panel of the bypass module, as shown in Figure 8.3 on the next page.
The ring connection ensures the reliability of the control of the parallel system. Be sure to verify the reliable cable
connection before starting up the system!
F igu re 8 .2 P arallel sign al cables co n n ectio n (P arallel system )
N o. D es crip tion
1 PARA1
2 PARA2
3 LBS
8 Parallel System and LBS System
135
Vertiv™ Liebert® APM Plus User Manual