Installation and User Manual

1.6Single Line Diagram

During normal operation, CB1, 2, 3A and 3B (if installed) are closed and the load receives power from the designated preferred source through either SW1 or SW2 SCR switch. In the event of a preferred source failure, the STS will transfer the load to the alternate source in a fraction of a cycle. If bypassed by closing either CB4 or CB5 bypass switch, CB1, 2, 3A and 3B (if installed) are opened, isolating the static switch section for maintenance.

Figure 1-4: Single Line Diagram, Epsilon STSTM with Options.

CB4

 

 

SOURCE

 

 

 

 

 

 

 

 

 

 

 

S1

 

 

 

 

 

 

 

 

 

 

 

INPUT

CB1

 

 

 

SW1

 

 

 

 

 

A

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SOURCE

B

B

 

 

 

 

 

CB3A

OUTPUT

 

 

C

C

 

FUSE

TVSS 1

 

 

A

A

 

#1

 

 

 

 

(OPTION)

 

 

 

 

 

N

 

AC-DC PS 1

 

 

 

 

 

B

B

TO

 

G

 

 

 

 

 

 

 

C

C

 

 

AC-DC PS 2

 

 

CONTROLS

CRITICAL

 

 

SOURCE

AC-DC PS 3

 

 

 

 

CB3B

 

N

LOAD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G

 

 

 

S2

 

 

 

 

 

 

 

 

 

 

INPUT

CB2

FUSE

TVSS 2

 

SW2

(OPTION)

 

 

 

 

A

A

 

 

 

 

 

 

 

(OPTION)

 

 

 

 

 

 

 

 

 

 

CB CONTROL

 

 

 

 

B

B

 

 

 

 

 

 

 

 

SOURCE

 

 

 

 

 

EPO PS

 

 

 

C

C

 

CB5

 

 

 

 

 

 

#2

 

 

 

EPO

 

 

 

 

N

 

 

 

 

 

 

SHUNT TRIPS

 

 

 

 

 

 

 

 

 

 

BYPASS LEDs

 

 

 

 

G

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

G

 

 

 

 

 

 

 

 

 

 

 

 

COMMUNICATIONS

 

TB1

 

 

 

 

 

 

RELAY

JBUS/MODBUS

OPTION

OPTION

STS CABINET

 

 

 

 

CARD

CARD

CARD

CARD

1

2 3 4

 

 

 

 

 

 

(SEE SECT. 2.5.3) (SEE SECT. 2.5.4)

 

 

EPO

SOURCE LOSS TEST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(SEE SECTION 2.5.2.1)

 

(SEE SECTION 2.5.2.2)

 

 

 

86-504004-00 B03

Introduction

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