Class 8839 58M Enclosed AC Drives

Power Circuit Descriptions

Barriered Bypass

Bypass configurations use isolation/bypass contactors to provide emergency full speed operation with Class 20 overloads. When Barriered Bypass (option 910) is selected, configurations with bypass are supplied with dual disconnects and compartmentalized construction for proper circuit isolation when performing maintenance.

 

CB

CB

Pic04.eps

 

Disconnect

Disconnect

 

Line

 

 

 

Reactor

 

 

Fan

Option

 

Control

AC Drive

 

 

lC

 

BC

Barriered

 

 

 

Bypass

 

 

 

Contactor

 

 

 

Compartment

M

 

 

65 KAIC

1–100 Hp

 

UL508C

Line Reactor Options

CB

Disconnect

1.5% Line Reactor

Fans AC Drive

lC

M125–500 Hp

Pic05.eps

Control

BC

25" Wide

Section Adder

Barriered

Bypass

100KAIC

UL508C

Line reactor options are wired ahead of the drive controller and do not affect bypass operation when supplied.

CB Disconnect

Line

Reactor

Option

Pic06 R1.eps

CB Disconnect

Line

Reactor

Option

Pic07 R1.eps

Fan AC Drive

Fan AC Drive

lC

BC

M

M

09/2003

149

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Image 149
Schneider Electric 58 TRX manual Barriered Bypass, Line Reactor Options, 149