Emerson UPS Systems installation manual Installation Drawings

Installation Drawings

Table 3 Liebert-supplied interconnect wiring for three-input Liebert NXL Maintenance Bypass Cabinet

Run	To	From	Conductor
A	Utility AC - Phase A	MBC Bypass AC - Phase A	Maintenance Bypass AC - Phase A
B	Utility AC - Phase B	MBC Bypass AC - Phase B	Maintenance Bypass AC - Phase B
C	Utility AC - Phase C	MBC Bypass AC - Phase C	Maintenance Bypass AC - Phase C
D	Utility Neutral	MBC Neutral	System Input Neutral
E	Utility Ground	MBC Ground	System Ground
F	Utility AC - Phase A	UPS Bypass AC - Phase A	UPS Bypass Input - Phase A
G	Utility AC - Phase B	UPS Bypass AC - Phase B	UPS Bypass Input - Phase B
H	Utility AC - Phase C	UPS Bypass AC - Phase C	UPS Bypass Input - Phase C
I	Utility AC - Phase A	UPS Rectifier AC - Phase A	UPS Rectifier Input - Phase A
J	Utility AC - Phase B	UPS Rectifier AC - Phase B	UPS Rectifier Input - Phase B
K	Utility AC - Phase C	UPS Rectifier AC - Phase C	UPS Rectifier Input - Phase C
L	Utility Neutral	UPS Neutral	UPS Neutral
M*	MBC Ground	UPS Equipment Ground	UPS Ground
N	UPS Output AC - Phase A	MBC Output AC - Phase A	UPS Output - Phase A
O	UPS Output AC - Phase B	MBC Output AC - Phase B	UPS Output - Phase B
P	UPS Output AC - Phase C	MBC Output AC - Phase C	UPS Output - Phase C
P1	UPS Output Neutral	MBC Neutral	UPS Neutral
Q	MBC Output AC - Phase A	Load AC - Phase A	Load AC Input - Phase A
R	MBC Output AC - Phase B	Load AC - Phase B	Load AC Input - Phase B
S	MBC Output AC - Phase C	Load AC - Phase C	Load AC Input - Phase C
T	MBC Neutral	Load Neutral	Load Neutral
U	MBC Ground	Load Ground	Load Equipment Ground
V	MBC Terminal Strip	UPS External Interface Board	Control Wiring

* For detached units only

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