Switchgear Transformers

These current transformers are moulded in epoxy and suitable for indoor use or in a climate controlled environment. They can be tailored for metering or relaying applications.

TCRO Transformer

Switchgear Technical Data Sheets

  • Insulation Class: 0.7 kV to 50 kV

  • Current Rating: 50 A to 15,000 A

  • Protection Accuracy: C10 to C1600

  • Metering Accuracy: 0.6B0.1 to 0.15B1.8

  • Operational Temperature: -5C to +40C

  • Frequency: 50 Hz or 60 Hz

Substation Transformers

These current transformers are specifically built to withstand harsh environments and atmospheric conditions: extreme cold, extreme heat, harmful UV radiation and atmospheric pollutants. This series of medium voltage current transformers are cast in a heavy duty hydrophobic cycloaliphatic epoxy coat and can be used for metering or relaying applications.

TECRO Outdoor Transformer

Substation Technical Data Sheets

  • Insulation Class: 5 kV to 50 kV

  • Current Rating: 100 A to 6,000 A

  • Protection Accuracy: C10 to C800

  • Metering Accuracy: 0.6B0.1 to 0.15B1.8

  • Operational Temperature: -50C to +50C

  • Frequency: 50 Hz or 60 Hz

Zero-Sequence Transformers

This series of low voltage current transformers are cast in an epoxy coat for use in indoor environments or in climate controlled areas. These Core Balance Current Transformers are built primarily for ground fault protection and current leakage.

Zero-Sequence Transformer

Zero-Sequence Technical Data Sheets

  • Insulation Class: 0.7 kV to 15 kV

  • Current Rating: 50 A to 200 A

  • Protection Accuracy: C10 to C100

  • Operational Temperature: -5C to +40C

  • Frequency: 50 Hz or 60 Hz

Bushing Transformers

These low voltage current transformers are cast in an epoxy coat for indoor and environmentally controlled  conditions. They are designed and built to go over insulated bus bars and bushings for metering or relaying applications.

TC Transformer

Bushing Technical Data Sheets

  • Insulation Class: 700 V

  • Current Rating: 50 A to 4,000 A

  • Protection Accuracy: C10 to C800

  • Metering Accuracy: 0.6B0.1 to 0.15B1.8

  • Operational Temperature: -5C to +40C

  • Frequency: 50 Hz or 60 Hz

Auxiliary Transformers

This series of low voltage current transformers are coated in a polyester varnish for indoor and controlled climate use. They are primarily used as current isolating transformers or current adjustment transformers.

Auxiliary A1 Transformer

Auxiliary Technical Data Sheets

  • Insulation Class: 700 V

  • Current Rating: 500 mA to 50 A

  • Protection Accuracy: C10 to C200

  • Metering Accuracy: Upon request

  • Operational Temperature: -5C to +40C

  • Frequency: 50 Hz or 60 Hz

Split-Phase Transformers

These specialty medium voltage current transformers are cast in epoxy for indoor or controlled climate use. These transformers are designed to detect faults between wingdings in a generator. This type of protection optimizes the amount of current transformers needed compared to a traditional differential protection.

Split-Phase Transformer

Split-Phase Technical Data Sheets

  • Insulation Class: 0.7 kV to 25 kV

  • Current Rating: 400 A to 8000 A

  • Detection Ratios: 50 to 250 A

  • Protection Accuracy: C10 to C100

  • Operational Temperature: -5C to +40C

  • Frequency: 50 Hz or 60 Hz

Specialty Transformers

Transformateurs P.M. also manufactures custom transformers beyond those described above. Please contact us with your requirements !