Emerson Liebert Static Transfer Switch - Manual (Page 35)

Installation Drawings
27
Figure 14 Electrical field connections drawing: 100 – 250 amp Liebert STS2 with single output breaker
PS212100 Rev. 3
FRONT VIEW
1. ALL DIMENSIONS ARE IN INCHES AND (MILLIMETERS). NOTES:
(WITH FRONT PANELS REMOVED)
SECTION A-A
NEUTRAL BUS SOURCE 1 INPUT Ø B SOURCE 1 INPUT Ø C
CB4
SIDE VIEW
ONE-LINE DIAGRAM
K3
K2
CB3
CB4
SYSTEM OUTPUT
K1
CB1
SOURCE 1
CB5
K1
K3
K2
CB2
SOURCE 2
.51 DIA.
GROUND BUS FRONT VIEW
PEM NUT
RIGHT SIDE VIEW
NEUTRAL BUS
PEM NUT
RIGHT SIDE VIEW INPUT/OUTPUT BUS
5. ALL WIRING IS TO BE IN ACCORDANCE WITH NATIONAL 4.
ALUMINUM
AND COPPER CLAD ALUMINUM CABLES AR
E
3. CONTROL WIRING AND POWER WIRING MUST BE RUN 2. TOP AND BOTTOM CABLE ENTRY AVAILABLE THROUGH AND LOCAL ELECTRICAL CODES. NOT
RECOMMENDED.
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
GROUND BUS
SOURCE 1 INPUT Ø A, Ø
B, Ø C
SOURCE 2 INPUT Ø A, Ø B, Ø C
SYSTEM OUTPUT Ø A, Ø B, Ø C
NEUTRAL BUS
SOURCE 1 INPUT Ø A
FRONT
CB1
C
B2
CB5 CB3
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).