Epilson STSTM

1.7.4Accessing Electrical Connections

CAUTION: Only an authorized electrical professional should access electrical con- nections. A severe shock hazard exists.

The ONLY user serviceable items in the Epsilon STS™ unit are:

A.The input power connections

B.The load connection

C.Any wire connections to the customer control terminal block.

D.The communication card options

The access method for connections made to the communication cards is clearly seen when the front door to the Epsilon STS™ unit is opened. Figure 1-5 and 1-6 show the panduit wire-ways used to thread wire through the conduit plates (top or bottom entry). However, access to the input and load power connections is made through the removal of the safety panel located in the upper left of the Epsilon STS™ front (with the door open). This safety panel is removed by first removing the screws securing the panel. It can then be removed by lifting the safety panel away from the unit.

Figure 1-5: 200A STS Power and Control Wire Connections.

CONTROL WIRES

THREADED THROUGH

PANDUIT/WIRE-WAYS

TOP ENTRY

CONDUIT PLATECONTROL WIRE

PANDUIT/WIRE-WAYS

TB1

TERMINAL

CONTROL

WIRES

COMMUNICATION

CARDS

BRACE AT 12" INTERVALS

BOTTOM ENTRY

CONDUIT PLATE

Table 1-1: Input/Output Power Connections.

# OF CABLES PER

 

MINIMUM

CABLE LUG

CONDUIT

 

 

 

 

CABLE SIZE

(SUPPLIED)

HOLE

 

 

 

 

PHASE

N

 

GND

(75°C, CU)

 

DIA. (QTY.)

1

2

 

1

# 4/0 AWG

# 4/0, 3/8” STUD

2-1/2” (3)

 

 

 

 

 

(T&B L973 OR EQUIV.)

 

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Introduction

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