Indoor Current Transformer

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Indoor Current Transformer Manufacturer - CIC

Based in Taiwan, CIC | CHALLENGE INDUSTRIAL CO., LTD. is a Indoor Current Transformer | electrical components & devices manufacturer since 1974.

Certified, compact and lightweight, ranging from surge protection device, ac line reactor, power capacitor, voltage power capacitor to indoor current transformers are provided. For current transformers, there are various KV current selections. For ac line reactor, there are high, middle, low voltages and more.

75,000 square foot manufacturing plant in Taiwan, incorporating other factories and partnerships in China, Vietnam, the Philippines, Malaysia and Indonesia, CIC has been offering worldwide customers high quality Current Transformers, Potential Transformers, Transformers, Bushings, Insulators, Reactors, Industrial Hardware, Meters, Capacitors.

Both with advanced technology and 43 years of experience, CIC ensures each customer's demands are met.


Indoor Current Transformer

ROS Series

CIC low voltage revenue current transformers (ROS Series) are designed for indoor applications. For use on meters or instruments on 1Φ2W, 1Φ3W, 3Φ3W and 3Φ4W distribution systems. ROS series provide maximum R.F. 4.0 associated with 0.3 metering class. All units will be tested to ensure that the electric property is accurate and that the appearance is perfect in all respects. CIC ROS series service a ratio range from 100/5A to 1200/5A. There are two window sizes available, which are 66mm and 78mm in diameter.


Download our latest catalogue of current transformers and a new help article.

Construction and Insulation

ROS series are coil cast with epoxy resin and are encased in a molded case to perform high intensity insulation. It provides excellent protection against moisture and oil, which are associated with low water/chemical absorption, and provides long service life.

Terminals & Sealable Cover

ROS series utilize 7mm diameter cross-hole wiring. It provides protection against shorting and is associated with a terminal cover, which can be sealed as well.

Product Features

  • Excellent insulation due to resin casting.
  • Indoor usage.
  • Type test certification.
  • High level rating factor (RF) capability.
  • 100% test before delivery. (Associated with test report)

Specifications

≦600V, 0.3 Metering accuracy class, 50/60 Hz, Ith = 40/sec.

Burdens & R.F Shown in the Table
Current Ratio
(Amps)
Thermal Rating FactorWindow
I.D.
Burden
@30℃ Amb.@55℃ Amb.
150:54.02.966mm/td>B0.1
200:54.02.966mm/td>B0.2
200:54.02.978mm/td>B0.1
250:54.04.066mm/td>B0.5
300:54.02.978mm/td>B0.5
400:54.02.978mmB0.5
500:53.02.478mmB0.5
600:52.01.878mmB0.5
800:52.01.578mmB0.5

Specifications II

Model

ROS-38A & ROS-66A & ROS-78A

Indoor, Mold Type, Epoxy Reisn

Standard

IEEE  C57.13

Frequency

50 / 60 Hz

System Voltage

0.6  kV

Ith

80 In / 1 Sec

Primary

100 A             (R0S-38A)

AC/BIL

4 / 10 kV

 

 150 ~ 250 A (ROS-66A)

 

 

 

 300 ~ 400 A (ROS-78A)

 

 

Secondary

5 A

 

 

Burden /Accuracy Class

as below list

 

 

Specifications III

Model

Primary (A)

Burden / Accuracy CL

ΦA

Approx. Weight (KG)

Remarks

ROS-38A

100

0.3B0.2

38

6.5

RF=4.0(30℃),RF=4.0(55℃) @60Hz

ROS-66A

150

0.3B0.1

66

5

RF=4.0(30℃),RF=4.0(55℃) @60Hz

ROS-66A

200

0.3B0.5

66

5

RF=4.0(30℃),RF=4.0(55℃) @60Hz

ROS-66A

250

0.3B0.5

66

5

RF=4.0(30℃),RF=4.0(55℃) @60Hz

ROS-78A

300

0.3B0.5

78

4

RF=4.0(30℃),RF=2.9(55℃) @60Hz

ROS-78A

400

0.3B0.5

78

4

RF=4.0(30℃),RF=2.9(55℃) @60Hz

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