Low-Voltage Current Transformers / Extended Range Current Transformers (ERCTs) for Billing, Window-Type

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Low-Voltage Current Transformers / Extended Range Current Transformers (ERCTs) for Billing, Window-Type - CIC

CIC | CHALLENGE INDUSTRIAL CO., LTD., since 1974, is a global supplier of Low-Voltage Current Transformers / Extended Range Current Transformers (ERCTs) for Billing, Window-Type. CIC specializes in the manufacture of instrument transformers, distribution transformers, detuned reactors, epoxy insulators, electronic energy meters, etc. Also provided or distributed are a wide range of other electrical or electronic apparatus.

Certified to ISO 9001, CIC ensures superior quality of its goods through such advanced technologies and materials as Swiss-manufactured equipment (for the production of resin insulators), Araldite® epoxy resin, and technology transferred from Messwandler-Bau (MWB) of Germany.

Backed by 44 years of experience, CIC offers custom-made products, OEM/ODM services, and technical support tailored to the needs of its discerning clientele.


Low-Voltage Current Transformers / Extended Range Current Transformers (ERCTs) for Billing, Window-Type

ROS-A Series

For 600V (max.) power systems, these current transformers offer a 0.3 Metering Class accuracy. ERCT specifications also available. Secondary side includes a short-circuiting device. Terminal cover sealable. Various window diameters and current ratios.

About the Product

Resin-insulated current transformers ROS-A Series, designed for billing purposes and suited to power systems of 600V (max.), offer revenue metering of at least a Class 0.3 Accuracy and can be used for indoor application or in an outdoor enclosure. Current Ratios available are from 100:5A to 800:5A, and window diameter options are 38mm, 66mm, and 78mm. ROS-A Series current transformers of the Standard Specifications have an RF of up to 4.0. Those of the ERCT Specifications are able to maintain the rated accuracy and burden rating while measuring 1% ~ 150% of the rated current, surpassing the usual metering-class requirement (5% ~ 100%). All ROS-A Series current transformers have been type-tested by CIC’s Advanced Electricity Lab, a testing facility accredited by a member of ILAC.

Product Features

  • Standards: IEEE C57.13
  • Secondary side equipped with a short-circuiting device
  • Terminal cover provided for the secondary side
  • Sealable
  • Application: Indoors, or in an outdoor enclosure
  • Rated Voltage: Up to 0.72 kV
  • Frequency: 50 / 60 Hz
  • 0.3 Metering Class
  • Type-tested by a laboratory accredited by an ILAC member
  • Additional specification or customization may be requested to comply with various electrical standards and client requirements

Selection Table

Standard Specifications

Model

Current Ratio

RF

Accuracy & Burden (IEEE)

Window Diameter

Approx. Weight

At 30℃ Ambient Temperature

At 55℃ Ambient Temperature

ROS-38A

100 / 5A

4.0

4.0

0.3 B-0.2

38 mm

6.5 kg

ROS-66A

150 / 5A

4.0

4.0

0.3 B-0.1

66 mm

5.0 kg

200 / 5A

4.0

4.0

0.3 B-0.5

250 / 5A

4.0

4.0

0.3 B-0.5

ROS-78A

300 / 5A

4.0

2.9

0.3 B-0.5

78 mm

4.0 kg

400 / 5A

4.0

2.9

0.3 B-0.5

500 / 5A

3.0

2.4

0.3 B-0.5

600 / 5A

800 / 5A

2.0

1.8

0.3 B-0.5

2.0

1.5

0.3 B-0.5

ERCT Specifications

Model

Current
Ratio


RF

Accuracy &
Burden (IEEE)

Window
Diameter

Approx.
Weight

ROS-66A

150 / 5A

1% ~ 150%

0.3 B-0.1

66 mm

5.0 kg

200 / 5A

1% ~ 150%

0.3 B-0.5

250 / 5A

1% ~ 150%

0.3 B-0.5

ROS-78A

300 / 5A

1% ~ 150%

0.3 B-0.5

78 mm

4.0 kg

400 / 5A

1% ~ 150%

0.3 B-0.5

500 / 5A

1% ~ 150%

0.3 B-0.5

600 / 5A

1% ~ 150%

0.3 B-0.5

800 / 5A

1% ~ 150%

0.3 B-0.5

Available Models

ROS-38A, ROS-66A, ROS-78A



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