Emerson Liebert Static Transfer Switch - Manual (Page 39)

Installation Drawings
31
Figure 18 Electrical field connections drawing: 800 – 1000 amp Liebert STS2 with single output breaker
SECTION A-A
SIDE VIEW
(WITH FRONT PANELS REMOVED)
FRONT VIEW
FRONT VIEW
GROUND BUS
.51 DIA.
NEUTRAL BUS RIGHT SIDE VIEW
.51 DIA.
INPUT/OUTPUT BUS RIGHT SIDE VIEW
NEUTRAL BUS GROUND
BUS
Ø A, Ø B, Ø
C
SYSTEM OUTPUT
Ø A, Ø B, Ø C SOURCE 1 INPUT
CB5 CB3 CB2
CB1
CB4
SOURCE 1 INPUT Ø
A
SOURCE 2 INPUT Ø A, Ø B, Ø C
SOURCE 1 INPUT Ø
B
SOURCE 1 INPUT Ø C
PEM NUT
FRONT
BUS NEUTRAL
CB3
SYSTEM OUTPUT
ONE-LINE DIAGRAM
PS212800 Rev. 2
CB4
K3
K2
K1
CB5
K3
K1 K2
SOURCE 1
CB1
SOURCE 2
CB2
NOT
RECOMMENDED.
NOTES: 1. ALL DIMENSIONS ARE IN INCHES AND (MILLIMETERS). 5. ALL WIRING IS TO BE IN ACCORDANCE WITH NATIONAL 4.
ALUMINUM
AND
COPPER
CLAD ALUMINUM CABLES ARE
3. CONTROL WIRING AND POWER WIRING MUST BE RUN 2. TOP AND BOTTOM CABLE ENTRY AVAILABLE THROUGH AND LOCAL ELECTRICAL CODES. RUN IN A SEPARATE CONDUIT FROM INPUT CABLES. IN SEPARATE CONDUIT. OUTPUT CABLES SHOULD BE CONDUIT SIZE, AND REPLACE. REMOVABLE ACCESS PLATES. REMOVE, PUNCH TO SUIT NEUTRAL, AND GROUND CABLE CONNECTIONS. KIT 6. HARDWARE KIT IS SUPPLIED FOR INPUT, OUTPUT, INCLUDES 1/2" BOLTS, WASHERS, AND NUTS FOR CONNECTING
CABLES TO THE BUS BARS.
7. THE TORQUE REQUIREMENT FOR 1/2"-13 PEM NUTS IS 428 INCH-LBS. (48 N-m).