Manual

NOTE
When extending secondary-stage cable of the current transformer,
use a covered ring-sleeve or the like and a cable of 1.25 to 2 mm².
The standard cable length is as follows.
When secondary-stage current is 5 A:
Up to 2.6 m for 1.25 mm², and up to 4.6 m for 2 mm²
When secondary-stage current is 1 A:
U p to 8.3 m for 1.25 mm², and up to 15 m for 2 mm²
4. Disposal
These current transformers, when no longer serviceable, must be disposed
of as industrial refuse.
5. Specifications
5.1 General
The CTW series are clamp-on current transformers that can be installed
much easier than conventional current transformers, whereby saving labor.
These transformers are particularly useful when expanding existing system
since you can attach them to a cable without having to cut it.
5.2 Characteristic Specifications
Rated primary current (In) / Rated secondary current:
CTW10= 100A / 1A
CTW20= 200A / 1A
CTW100= 500A / 5A
CTW130= 800A / 5A
Rated frequency: 50 / 60 Hz
Rated burden:
CTW10, CTW20 = 0.5VA
CTW100, CTW130 = 2.5VA
Accuracy / Linearity: ±1.0% against rated primary current In
Phase difference: Within ±2° against rated primary current In
Operating circuit voltage: Within 500 V AC
Insulation resistance: 100 MΩ or more at 500 V DC (across core and
output)
Withstand voltage: 2000 V AC for one minute (across core and output)
Operating temperature range: -20 to 50°C (no condensation)
Operating conditions: Indoor location
Weight:
CTW10= Approx. 220 g
CTW20= Approx. 220 g
CTW100= Approx. 350 g
CTW130= Approx. 380 g
6. External Dimensions
Unit: mm
6.1 CTW10 and CTW20
43
25
41
42
0.75mm
2
×300l-2C
K
L
Φ
7
0
Φ
2
4
6.2 CTW100 and CTW130
53
25
51
42
0.75mm
2
×300l-2C
Φ
9
0
Φ
3
6
K
L
IM 77C01W02-01E 2nd Edition: 2004.06.01-00
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