3kV Two-Core Epoxy-Cast Current Transformer

Medium-Voltage Current Transformers (3~7.2 kV)

ER-3C

About the Product

Designed to offer a higher rated current ratio, this indoor two-core epoxy-cast current transformer is suited to the main panel or the motor control panel of a 3.6kV (max.) power system and can be used in conjunction with measuring or monitoring instruments, or with protective relays. Insulated with Araldite® epoxy resin, the ER-3C has excellent moisture resistance and provides superior electrical performance. Easy to install, this current transformer also has a pleasing design.

Product Features

  • Standards: JIS, IEC or IEEE*
  • Indoor application; epoxy-cast model
  • System Voltage: ≦ 3.6 kV
  • Frequency: 50/60 Hz
  • AC/BIL:10/40kV
  • Rated Current Ratio: Single-ratio or dual-ratio types
  • Approx. Weight: 11 kg
  • Other standards and specifications upon request

Selection Table*

 

Primary Current (A)

Secondary Current (A)

Burden / Accuracy

Ith

(kA)

Core  1

Core  2

Single Ratio

200〜400A

5A  or  1A

5A  or  1A

15VA/5P10

+

30(15)VA/1.0(0.5)

Max. 25 kA/1S

500〜800A

1000〜1200A

Dual Ratio

200-400A

5A  or  1A

5A  or  1A

15VA/5P10

+

30(15)VA/1.0(0.5)

Max. 25 kA/1S

250-500〜400-800A

500-1000〜600-1200A

 

*Other standards and specifications available.

 
 

Downloadables

3kV Two-Core Epoxy-Cast Current Transformer (Model: ER-3C)

Easy-to-print document, containing product description and specifications.

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.