Zero Phase Current Transformer

c68c2b_8bad33d1e9544629869ae6064c19e39e-mv1.jpg

Taehwatrans’ Zero Phase Current Transformer Series are compact molded-type, zero phase current transformers ideal for improving the sensitivity, compactness and lightweight of electric shock prevention. Typical applications include electric shock prevention from earth leakage breakers, short-circuit relays and ground fault circuit interrupters. As electrical vehicle (EV) takes up more market shares in automotive industry, zero phase current transformers finds new opportunities in EV charging cable and station applications.

Zero Phase Current Transformer Application

  • Residual current circuit breaker
  • Earth leakage circuit breaker
  • ZCT for Energy Storage System (ESS)
  • Home Energy Management System
  • Application leakage circuit interrupter
  • Ground fault interrupter
  • EV Charging Plug & Cable

Zero Phase Current Transformer General Features

  • Minimum output voltage tolerance
  • Close to zero load shift & excellent thermal properties
  • A variety of configuration
  • RoHS compliant

Drawing

Wire Lead Type

Zero-Phase-Current-Sensors-drawing

Dimension & Current Rating

unit: mm/inch
Model No A(min) B(max) C(max) D(max) E(±0.3) F(±0.3) G(±0.5) Current raing
TZ1L 5.9
0.232'
17.4
0.685'
8.0
0.315'
20.5
0.807'
5.5
0.217'
73.0
2.874'
3.0
0.118'
15A
30A
TZP9L 6.0
0.236'
14.0
0.551'
9.0
0.354'
17.5
0.689'
5.7
0.224'
40.0
1.575'
3.0
0.118'
20A
30A
TZ53L10 6.9
0.272'
17.1
0.673'
6.7
0.264'
19.1
0.752'
5.2
0.205'
50.0
1.969'
3.0
0.118'
15A
30A
TZ1pL 7.3
0.287'
19.1
0.752'
8.1
0.319'
22.0
0.866'
7.0
0.276'
73.0
2.874'
3.0
0.118'
15A
30A
TZ2pL9 8.9
0.350'
22.0
0.866'
8.2
0.323'
25.0
0.984'
7.0
0.276'
120±5.0
4.724'
4.0±0.5
0.157'
30A
50A
TZ3L 9.9
0.390'
24.0
0.945'
9.0
0.354'
27.0
1063'
6.0
0.236'
73.0
2.874'
3.0
0.118'
50A
75A
TZ3pL 12.5
0.492'
26.2
1.031'
9.0
0.354'
29.0
1.142'
6.45
0.254'
120±5.0
4.724'
4.0±0.5
0.157'
50A
TZ4L 15.5
0.610'
30.35
1.195'
9.2
0.362'
33.4
1.315'
6.3
0.248'
73.0
2.874'
3.0
0.118'
100A
TZ5L 19.4
0.610'
40.5
1.195'
10.0
0.362'
43.5
1.315'
12.1
0.248'
87.0
2.874'
6.0
0.118'
100A
150A
TZ9L1 26.0
1.024'
49.5
1.949'
15.1
0.594'
52.5
2.067'
8.8
0.346'
106.0
4.173'
6.0
0.236'
225A
Horizontal Type unit: mm/inch
Model No A(min) B(max) C(max) D(max) E F(max) G H Current raing
TZ1H 5.7
0.224'
17.4
0.685'
8.0
0.315'
17.3
0.681'
11.2
0.441'
17.4
0.685'
6± 1.0
0.236'
15A
30A
15A
20A
30A
TZ1H3 6.1
0.240'
17.1
0.673'
7.0
0.276'
18.2
0.717'
10.3
0.406'
17.1
0.673'
2.75
0.108'
TZ2H1 10.5
0.413'
23.5
0.925'
10.0
0.394'
29.7
1.169'
7.1
0.280'
26.0
1.024'
12.5
0.492'
4.3
0.169'
TZ53H 6.9
0.272'
17.1
0.673'
6.0
0.236'
19.1
0.752'
5.2
0.205'
3±0.3
0.118'
6±3.0
0.236'
Wire lead Type unit: mm/inch
Model No A(min) B(max) C(max) D(max) E F(±3.0) G(±1.0) Current Raing
TZ6T 22.5
0.886'
40.3
1.587'
12.7
0.500'
43.5
1.713'
17±1.0
0.669'
70.0
2.756'
6.0
0.236'
150A
TZ8T 33.0
1.299'
57.4
2.260'
18.2
0.717'
57.8
2.276'
19±1.0
0.748'
80.0
3.150'
6.0
0.236'
225A
TZ11T 72.0
2.835'
102
4.016'
15.0
0.591'
105.5
4.154'
22±2.0
0.866'
150.0
5.906'
3.0
0.118'
800A - 1200A
TZ42T 48.5
1.909'
75.4
2.969'
15.0
0.591'
77.0
3.031'
22±2.0
0.866'
103.0
4.055'
6.0
0.236'
400A

Electrical Properties

Based on model TZ1L
Output Voltage Properties Vo=15mV min (at lo=25mA, R=1kΩ,f=60Hz)
Remanence Magnetism T=10% Max ( at IDC=50AT )
Thermal Properties tv = Max 10% ( at -10°C ~ +65°C )
Hair-Pin Properties V" = 6mV max ( at IL=30A )
Pulse Width Properties Tp=2.5m sec min( at Vo = 15mV level )
  1. Output voltage properties: Being measured after demagnetized.
  2. Remanence magnetism: Variation of the output voltage between the virgin CT's and the sataurated CT's.
  3. Thermal properties: Variation of the output voltage from -10℃ to +65℃ at the ambient temperature.
  4. Hair-pin properties: At the balanced current equivalent to 6 times of the rated current along around 360 degree,V" is the maximum output voltage.
  5. Pulse width properties: the wave width at Vo=10mV

Secondary Burden & Output Voltage Graph

Zero-Phase-Current-Sensors-graph1.png Zero-Phase-Current-Sensors-graph2.png