Indian Transformers Company Ltd

Combined Instrument Transformers

High Voltage Combined Instrument Transformers

We can offer combined instrument transformers up to 145 kV. The current transformer section is housed in the live chamber while the voltage transformer is placed in the lower tank. This helps reduce the cost by sharing a common porcelain housing and reducing the requirement for oil and mounting structures. Up to 5 cores can be accomodated for the current transformer up to a maximum current of 4000 A and 3 windings can be provided for the voltage transformer up to a maximum thermal burden of 2500 VA. The insulation is based on oil-paper combination. The oil impregnation is done under a high degree of vacuum with excellent monitoring and control of dissipation loss factor (tan delta). Conformance can be made in accordance to IS, IEC, BS and ANSI standards.

145 kV - 123 kV CPT product data sheet (Get PDF1.88 MB)

Medium Voltage Combined Instrument Transformers

We also offer combined metering CT-PT (Current-Potential Transformer) units for three phase/single phase metering applications. Three phase units are manufactured for up to 36 kV voltage class. Typically combined units are of outdoor type although indoor type designs are also manufactured. The insulation is based on oil-paper combination. The oil impregnation is done under a high degree of vacuum with excellent monitoring and control of dissipation loss factor (tan delta). Conformance can be made in accordance to IS, IEC, BS and ANSI standards.

72.5 kV CPT product data sheet (Get PDF1.12 MB)
36 kV - 11 kV CPT product data sheet (Get PDF 371 kb)

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