SEM3 Split Core Current Transformer Install Guide
E492531
7KT1280-5MA...
i. In accordance with NEC, CTs may not be installed in
any panel board where they exceed 75% of the wiring
space of any cross sectional area.
ii. Do not install a Current Transformer in an area where
it would block ventilation openings.
iii. Do not install a Current Transformer in area of breaker
arc venting.
iv. Not suitable for Class 2 wiring methods and not
intended for connection to Class 2 equipment.
Field-installed Class 2, Class 3, and other low voltage
conductors shall be separated by a minimum 1/4 inch
(6.4mm) from factory- or field-installed electric light,
power, Class 1, non-power-limited fire alarm circuit
conductors, and medium power network-powered
broadband communications cables. Separation of
conductors may be obtained by clamping, routing,
or an equivalent means.
v. Secure Current Transformers and route conductors so
that they can not directly contact live terminals or
current carrying conductors.
The SEM3 series Split Core Current Transformers measure
rated currents up to 2000 Amps. They may be field installed
within distribution and control equipment such as panel
boards, switchboards, industrial control equipment, and
energy-monitoring / management equipment to measure
current on the service entrance or branch circuit conductors.
Specifications
Ratings:
Primary voltage: 600 VAC
Overvoltage category: CAT IV (service entrance) for
pollution degree 3
Line frequency: 50/60Hz
Secondary (output) current: 100mA
Listed to: UL 2808
Environmental:
Operating temperature: -40°F to 158°F (-40°C to 70°C)
Operating humidity: 0 to 95% non-condensing
Pollution degree: 3 for CAT IV, 600 VAC
Indoor use: Suitable for indoor use
Electrical:
Accuracy class: 0.5S
Protection: Shorting of CT is not needed since CT already
includes shorting means, voltage limited to 5V+/-2V.
Lead wires: 18AWG, Stranded 16/30, 600V, UL style
1015, Brown/Yellow twisted pair, 2 turns per inch.
Type
Rated primary
current I
p
(A)
Rated secondary
current I
s
(mA)
7KT1280-5MA00
50
100
7KT1280-5MA01
125
100
7KT1280-5MA02
250
100
7KT1280-5MA03
400
100
7KT1280-5MA04
600
100
7KT1280-5MA05
800
100
7KT1280-5MA06
1200
100
7KT1280-5MA07
1600
100
7KT1280-5MA08
2000
100
