Liebert POWER PROTECTION STATIC TRANSFER SWITCH manual

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

	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
PEM NUT	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

Figure 17 Electrical field connections

29

CB1

CB4

NEUTRAL

BUS

CB3A

GROUND

BUS

FRONT VIEW

(WITH FRONT PANELS REMOVED)

SOURCE 1 INPUT Ø A, Ø B, Ø C

SOURCE 2 INPUT

ØA, Ø B, Ø C

CB2

CB5

SYSTEM OUTPUT Ø A, Ø B, Ø C

CB3

FRONT

NEUTRAL BUS	CONNECTING CABLES TO THE BUS BARS.
RIGHT SIDE VIEW	7. THE TORQUE REQUIREMENT FOR 1/2"-13 PEM NUTS IS
	428 INCH-LBS. (48 N-m).
SOURCE 1 INPUT Ø A
SOURCE 1 INPUT Ø B
SOURCE 1 INPUT Ø C
NEUTRAL BUS
SOURCE 1				SOURCE 2
	CB1			CB2
	K1			K2
K2 K3	CB4	CB3A	CB3	K1 K3	CB5

	SYSTEM OUTPUT
SECTION A-A	ONE-LINE DIAGRAM
	PS212401
SIDE VIEW
	Rev. 2

drawing: 400 – 600 amp STS2 with dual output breakers

Installation Drawings