Vertiv APM 0250kMK16FN02000, User Manual

Page: 152 / 192

8.4.2 External Protective Device
Refer to External Protective Device.
8.4.3 Power Cable
The power cable of dual-bus power system is similar to that of single system. 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.
8.4.4 LBS Cable
For 250 kVA dual bus system, connect the optional LBS cables (10 m, 15 m, 20 m) between the LBS ports (J4) or PARA2
and LBS port the two UPS systems shown in Figure 8.7 on the facing page. The J4 port and PARA port are provided on the
front panel of the bypass module, as shown in Figure 8.8 on page 146.
N O T E: Yo u m u st u se th e sh o rtest LB S cable to su it th e applicatio n an d m u st n o t co il excess.
M ean wh ile, separate th e LB S cable fro m th e po wer cables to preven t electrical in terferen ces.
8 Parallel System and LBS System
144
Vertiv™ Liebert® APM Plus User Manual