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Current Transformers

Current Transformers
Current Transformers
A current transformer is an application-specific transformer designed to measure alternating current.

As an instrument transformer, a current transformer scales a large current value into a smaller current value that is easier for instruments and relays to handle. This isolates the instrument circuit from the main power circuit, which helps protect equipment and improve performance.

Current transformers are built like any other transformer, with primary and secondary windings and a core. Current that passes through the primary winding is proportionally transformed through induction into the secondary winding before it supplies the instrument circuit. This secondary current value is more useful for low-voltage applications.

MODEL 2 Series Image
  • 50:5 ~ 400:5 Current Ratios
  • 50 ~ 400 Hertz
  • 1.13 Inch Window Diameter
  • Foot Mounted
  • cURus E228202
The Model 2 provides traditional reliability, accuracy and quality. Generally for ammeter use only, the rating factor is 2.0 @ 30 degrees Celsius ambient temperature.
  • Brass Stud Terminals
  • Wire Leads Available
MODEL 5 Series Image
  • 50:5 ~ 1200:5 Current Ratios
  • 50 ~ 400 Hertz
  • 1.56 Inch Window Diameter
  • Foot Mounted
  • cURus E228202
The Model 5 provides traditional reliability, accuracy and quality. Generally used for ammeters, wattmeters and cross current compensation.
  • Brass Stud Terminals
  • Wire Leads Available
2 Series Image
  • Flexible Leads Are UL 1015 105C, CSA Approved #16 AWG, 24" Long
  • Terminals Are Brass Studs No. 8-32 UNC with One Flat Washer, Lockwasher and Regular Nut
  • SHT and SFT Case Styles Also Available as SHL and SFL with Leads
  • Has a Frequency Range of 50-400 Hertz
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