Liebert POWER PROTECTION STATIC TRANSFER SWITCH manual Electrical field connections

PEM NUT

.51 DIA.

GROUND BUS	.51 DIA.	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

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.

Figure 18 Electrical field connections

30

CB1

CB4

SOURCE 1 INPUT

Ø A, Ø B, Ø C

SOURCE 2 INPUT

ØA, Ø B, Ø C

CB2

CB5

GROUND

BUS

SYSTEM OUTPUT

ØA, Ø B, Ø C

CB3

NEUTRAL BUS

FRONT

NEUTRAL BUS 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	CB3	K1 K3	CB5

SYSTEM OUTPUT

drawing: 800 – 1000 amp STS2 with single output breaker

Installation

FRONT VIEW	SECTION A-A
	SIDE VIEW
(WITH FRONT PANELS REMOVED)

ONE-LINE DIAGRAM

PS212800

Rev. 2

Drawings