Specifications 37
Common CT Specifications
Type:
voltage output, integral burden resistor
Output Voltage at Rated Current:
0.33333 Vac (one-third volt)
Standard CT Wire Length:
2.4 m (8 feet)
Optional CT Wire Length:
up to 30 m (100 feet)
Split-Core CTs
Also called “opening” current transformers. Any UL Listed CT with a 0.333 Vac output
may be used as well as the following UL Recognized CTs under UL file numbers
E96927 or E325972: CTM-0360-
xxx
, ACT-0750-
xxx
, CTS-0750-
xxx
, CTS-1250-
xxx
, CTS-2000-
xxx
, and CTL-1250-
xxx
where
xxx
indicates the full scale current rating. CTB-
www
X
hhh
-
xxx
and CTBL-
www
X
hhh
-
xxx
where
www
and
hhh
indicate the width and height in inches, and
xxx
indicates the full scale current rating.
Solid-Core CTs
Also called “toroid” or “donut” current transformers. These are UL recognized under UL
file number E96927: CTT-0750-100N, CTT-1250-400N, CTT-0300-030N, CTT-0500-060N,
CTT-1000-200N, CTT-0300-005N, CTT-0300-015N, CTT-0500-050N, CTT-0500-030N,
CTT-0500-015N, CTT-0750-070N, CTT-0750-050N, CTT-0750-030N, CTT-1000-150N,
CTT-1000-100N, CTT-1000-070N, CTT-1000-050N, CTT-1250-300N, CTT-1250-250N,
CTT-1250-200N, CTT-1250-150N, CTT-1250-100N, CTT-1250-070N.
