Two-Core Coil Molded Current Transformer with Cut Cores, 3kV

Medium-Voltage Current Transformers (3~7.2 kV)

EW-3C

About the Product

Often used with the main panel or the motor control panel of a 3.6kV (max.) power system, this indoor, two-core (core type: cut-core) current transformer is good for protection and is suited to measuring and monitoring instruments. Compact, easy to install, and insulated with Araldite® epoxy resin, this medium-voltage coil molded current transformer has a fine exterior and provides excellent electrical performance.

Specifications

  • Standard: IEC or IEEE*
  • Indoor application
  • Coil molded
  • High-grade silicon steel cores
  • System Voltage: ≤ 3.6 kV
  • Frequency: 50/60 Hz
  • Ith: 16 kA/1S
  • Current Ratio: ≦ 300A/5-5A
  • AC/BIL: 10/40kV
  • Approx. Weight: 9 kg

Coil Molded Current Transformers (Selection Table)

Model

System
Voltage

Primary
Current

Secondary
Current
Burden /
Accuracy

Ith
(Max.)

AC/BIL
(kV)

Approx.
Weight
(kg)

Num.
Of
Cores

Core 1

Core 2

EW-3S

3.6 kV

10~400A

5A / 1A

40VA/1.0

16 kA/1S

10/40

5

1

EW-3C

3.6 kV

10~300A

5A / 1A

5A / 1A

15VA/5P10
+ 25VA/0.5

or

15VA/5P10
+ 30VA/1.0

9

2

EW-10SH

12 kV

5~400A

5A / 1A

40VA/1.0

28/75

7

1

 

* Other standards and specifications available

 
 

Downloadables

Coil Molded Current Transformers, EW Series

Including EW-3S, EW-3C, and EW-10SH. Production description, photos, and a selection table.

CT & PT Selection Guide: How to Choose a Current Transformer or Potential Transformer

How to select, based on application and power system attributes, the primary and secondary currents, burden, accuracy, rated frequency, type (indoor vs. outdoor), insulation material, etc.