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Current Transformer For GFCI

Open ZCT Current transformer for GFCI

Open ZCT Current transformer for GFCI

Precision and steady output
Close to zero load shift
Excellent balance characteristics
Superior temperature stability
  • Item NO.:

    ZG523
  • Product Detail

Current transformer for GFCI ZG523


The GFCI component must consist of ZCT and GNT coils. The ZCT coil is used to detect a small ground fault difference current between the live line and the earth line .The GNT coil is used to detect an over-current caused by arcing or short circuit of the cable fire or excessive current change. Current transformer is mainly used in GFCI sockets or plugs used in near-water environments such as kitchens, bathrooms, car washes, and arc fault breaker sockets or plugs for air conditioners.


Technical Specification:

Rated Current

20 A

DC Resistance at 25℃

ZCT
GNT

45±5Ω
5.7± 2Ω

Dielectric Withstanding   Voltage(Hi-pot)

 1500 V AC 1 min

Output Voltage Vo

ZCT
GNT

3.4-4.1mV
≥80mH


Current transformer for GFCI


Specification & Dimension:

Model No.

Electrical Characteristics

Dimension(Unit:mm/inch)

Standard PN

Ip(A)

I(mA)

Rl(Ω)

ZCT:V(mV)

A

B

C

D

E

F

Pin

f(Hz)

u(V)

GNT:Ls(mH)


523

20

5

1K

3.5-4.2

16

17.85

11.5

5

11

1.5

□0.64

Z/G523P100

1.0K

1.0V

90-140

0.630

0.703

0.453

0.197

0.433

0.059

0.025

524

20

5

1K

3.5-4.2

17.2

11

3.6

14

18.6

7

□0.64

Z/G524P100

1.0K

1.0V

90-140

0.677

0.433

0.142

0.551

0.732

0.276

0.025

530

30/50

5

1K

4.1±0.5

38.00

19.80

16.50

42.60

2.12

6.18

□0.64

Z/G530P100

1.0K

1.0V


100±25

1.496

0.780

0.650

1.677

0.083

0.243

0.025

537

20/30

5

1K

3.5-4.2

16

20.5

15.8

13.3

15.2

3.2

□0.64

Z/G537P100

1.0K

1.0V

90-140

0.630

0.807

0.622

0.524

0.598

0.126

0.025

542

20/30

5

1K

3.5-4.2

17.465

5.5

23.4

11.1

19.9

7.5

0.8

Z/G542P100

1.0K

1.0V

90-140

0.688

0.217

0.921

0.437

0.783

0.295

0.031

556

20

5

1K

3.5-4.2

16.9

5.21

10.5

3.18

6.36

17.4

□0.64

Z/G556P100

1.0K

1.0V

90-140

0.665

0.205

0.413

0.125

0.250

0.685

0.025


GFCI Current Transformer Application:      

√ Sensing toroid using to sense minimal differential current caused by the ground fault
√ Grounded neutral toroid using to sense unexpected excessive current change or overload current caused by the arc resulted from the fire or the short circuit


Current transformer for GFCI


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