22 WL Circuit Breaker Selection and Application Guide
WL Circuit Breaker
Accessories
Metering current transformer 3-phase window
(cradle mounting only)
For draw-out breaker applications a three phase metering CT
is available. Termination screws are integral to the mold for
point-to-point wiring without the use of terminal blocks or
wire couplers. Metering ratios range from 800:5 to 5000:5.
CTs include mounting hardware.
For frame size 3 order part numbers:
3200:5 Rating WLG3200MCT3
4000:5 Rating WLG4000MCT3
5000:5 Rating WLG5000MCT3
Metering current transformer – single phase
A single piece housing that is compact and designed to fit around
phase or neutral bussing. Termination screws are integral to the
mold for point-to-point wiring without the use of terminal blocks
or wire couplers. Metering ratios range from 800:5 to 5000:5.
For frame size 1 and 2 order part numbers:
800:5 Rating WLG800MCT2
1200:5 Rating WLG1200MCT2
1600:5 Rating WLG1600MCT2
2000:5 Rating WLG2000MCT2
2500:5 Rating WLG2500MCT2
3200:5 Rating WLG3200MCT2
For frame size 1, 2 or 3, order part numbers:
800:5 Rating WLG800NMCT23
1200:5 Rating WLG1200NMCT23
1600:5 Rating WLG1600NMCT23
2000:5 Rating WLG2000NMCT23
2500:5 Rating WLG2500NMCT23
3000:5 Rating WLG3000NMCT23
3200:5 Rating WLG3200NMCT23
4000:5 Rating WLG4000NMCT23
5000:5 Rating WLG5000NMCT23
4W Modified Differential Ground Fault (MDGF)
For MDGF draw-out breaker applications, a three phase iron-
core CT is available. The MDGF CTs are physically the same as
the above metering CTs but the current ratio is 1200:1.
For frame size 2, breakers order part number:
1200:1 rating WLGMDGFCT2 Phase CT
For frame size 3, breakers order part number:
1200:1 rating WLGMDGFCT3 Phase CT
For frame size 2 and 3, neutral CT order part number:
1200:1 rating WLGNMDGCT23 Neutral CT
A typical application for modified differential ground fault is
‘Main-Tie-Main’ where all breakers require 3 Phase CTs and a
neutral CT.
Courtesy of NationalSwitchgear.com
To Next Page
Loading...
