ITL's Blog

Think CT's & PT's think ITL

On-Site Current Transformer Testing

Current Transformers (CT’s) are used for both Measuring and Protection purposes connecting high power switchgear to the secondary device.

We have now invested in a state of the art CT Analyser which can be used both in the factory for CT tests at the manufacturing stage or on site to provide tests to confirm the specification of the installed CT – either measuring or protection CTs. The CT Analyser (manufactured by Omicron) automatically determines all the relevant CT values and can compare the results with the selected standard.

The following values can be tested using the CT Analyser

  • CT Ratio
  • CT Phase Angle
  • CT Excitation & Saturation
  • Burden Impedance
  • Winding Impedance
  • Saturated Inductance
  • CT Polarity

Instrument Transformers Limited can provide these tests using this CT Analyser typically throughout the UK with their experienced test engineers. Whether it is an industrial or commercial installation – we provide the customer with a test report to support the specification of the installed CT, in addition a full test report showing CT characteristics – checked against the standards. We recommend periodic retesting to maintain the validity of the CTs operation.



November 4, 2011 Posted by | Power Transformers, Relay Testing, Transformer Testing | , , , | Leave a comment

New Product Line: 3PH, 120VA to 150kVA Transformers

ITL is proud to announce the launch of our comprehensive range of competitively priced, short lead time, 3 Phase Power Transformers from 120VA to 150kVA.

Designed to EN 60076-1 with insulation system to “Class E” (120 deg.C) or “Class F” (155 deg.C).

The entire range can be supplied either “Open” type with an aesthetically appealing golden polyester varnish or “Enclosed” in an IP rated sheet steel enclosure.

For more information ping marketing@itl-uk.com with your full details.

July 26, 2011 Posted by | Power Transformers, Transformer Design | , , , , , , , , , | Leave a comment