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Installation
CSH120 & CSH200
Zero Sequence CT
Function
PE50032
The specifically designed CSH120 and CSH200 zero sequence CTs measure direct
residual current. The only difference between them is the diameter. Due to their low
voltage insulation, they are used only on cables.
Characteristics
CSH120 CSH200
Inner diameter 120 mm (4.7 in) 200 mm (7.9 in)
Weight 0.6 kg (1.32 lb) 1.4 kg (3.09 lb)
Accuracy ±5% at 20°C (68°F)
±6% max. from –25°C to 70°C
(–13°F to +158°F)
Transformation ratio 1/470
CSH120 and CSH200 Zero Sequence CTs. Maximum permissible current 20 kA - 1 s
Operating temperature –25°C to +70°C (–13°F to +158°F)
Storage temperature –40°C to +85°C (–40°F to +185°F)
Dimensions
DE10228
Dimensions A B D E F H J K L
CSH120
(i
N)
120
(4.75)
164
(6.46)
44
(1.73)
190
(7.48)
76
(2.99)
40
(1.57)
166
(6.54)
62
(2.44)
35
(1.38)
CSH200
(i
N)
200
(7.87)
256
(10.1)
46
(1.81)
274
(10.8)
120
(4.72)
60
(2.36)
257
(10.1)
104
(4.09)
37
(1.46)
4 horizontal mounting
holes Ø 0.2 in. (5 mm)
4 vertical mounting
holes Ø 0.2 in. (5 mm)
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