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Overhead Current Transformer

Current Transformer
  • Fits to existing Air-Break Switches
  • Measures Line Current Accurately
  • Drive Fault indicators
  • Retrofit Solution

OPERATIONAL FEATURES

Upgrading existing air-break switches can be costly and unnecessary. And yet with more and more pole mounted switches and sectionalisers relying on vacuum technology, electrical network operators still require air-break switches and disconnectors to provide ‘points-of-isolation’. Why not have your utilities business plan make the most of your assets and turn your air-break switches into a smart switches.

Radius range of air-break switch motor and gas actuators allow remote monitoring and operation of both linear and torsional devices, and now with their air-break switch current transformer, for the first time an affordable and reliable method of providing protection and measurement can be realised. Furthermore fault measurement and voltage measurement means your air-break devices can now be absorbed in to your total protection scheme, by allowing ‘dead-time’ sectionalising in conjunction with up-stream reclosers and circuit breakers.

Technical Information

Rated Voltage, kV

15

Rated Frequency, Hz

50/60

Rated Primary Current, A

400

Rated Secondary Current, A

1

No. of Secondary Windings
for measurement
for protection

1
0
1

Accuracy Class

10P5, (±1%)

Rated Power of Secondary
Windings at Cos Phi =

0.8 , VA: 5

Maximum Rated Multiplicity of the
Winding for Protection

5

Three Second Thermal
Stability Current, kA:

23

Test Voltage, kV:

One min. of industry
frequency of full lighting
impluse: 95

Creepage Distance, mm:

551.2

Clearance Distance, mm:

177.8

Downloads

Click here to download the acrobat PDF reader | CT_A4_01_09_r01.pdf (1.67 MB)

You may need an Acrobat reader to read some of the PDF files above, click here to download the reader from Adobe
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