Emerson Static Transfer Switch One-Line Diagram, Front View, Electrical field connections

.51 DIA.	PEM NUT
GROUND BUS	INPUT/OUTPUT BUS
FRONT VIEW	RIGHT SIDE VIEW

PEM NUT

NEUTRAL BUS

RIGHT SIDE VIEW

SOURCE 1 INPUT Ø A, Ø B, Ø C

NOTES:

1.ALL DIMENSIONS ARE IN INCHES AND (MILLIMETERS).

2.TOP AND BOTTOM CABLE ENTRY AVAILABLE THROUGH REMOVABLE ACCESS PLATES. REMOVE, PUNCH TO SUIT CONDUIT SIZE, AND REPLACE.

3.CONTROL WIRING AND POWER WIRING MUST BE RUN IN SEPARATE CONDUIT. OUTPUT CABLES SHOULD BE RUN IN A SEPARATE CONDUIT FROM INPUT CABLES.

4.ALUMINUM AND COPPER CLAD ALUMINUM CABLES ARE NOT RECOMMENDED.

5.ALL WIRING IS TO BE IN ACCORDANCE WITH NATIONAL AND LOCAL ELECTRICAL CODES.

6.HARDWARE KIT IS SUPPLIED FOR INPUT, OUTPUT, NEUTRAL, AND GROUND CABLE CONNECTIONS. KIT 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

428INCH-LBS. (48 N-m).

Figure 14 Electrical field connections

27

		SOURCE 1 INPUT Ø A
	SOURCE 2 INPUT	SOURCE 1 INPUT Ø B
	Ø A, Ø B, Ø C
		SOURCE 1 INPUT Ø C
		NEUTRAL BUS
CB1	CB2
		SOURCE 1			SOURCE 2
CB4	CB5		CB1		CB2
			K1		K2
NEUTRAL	CB3
		K2 K3	CB4	CB3	K1 K3	CB5
BUS
	SYSTEM OUTPUT
	Ø A, Ø B, Ø C
	FRONT
GROUND				SYSTEM OUTPUT
BUS
	SECTION A-A			ONE-LINE DIAGRAM
FRONT VIEW
	SIDE VIEW

(WITH FRONT PANELS REMOVED)

PS212100

Rev. 3

drawing: 100 – 250 amp Liebert STS2 with single output breaker

Installation Drawings