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    Instrument Transformers

    Used for measurement and control of distribution equipment

    Available in multiple window sizes and configurations to maximize applications. Square D offers 3 models of voltage transformers.

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    Instrument Transformers
    • Features

      Digest-product-info

      Square D Current Transformers are available in General Purpose Round, Toridal, Bushing, Rectangular, and Split Core configurations.

      • General Purpose Round Current Transformers - Specifically designed for ammeter and solid-state transducer applications. Design allows for low cost compact solution with good electrical performance.
      • Toridal Current Transformers - Extremely wide range of ratios available, along with wide range of window sizes from 1.13 in (28 mm) to 8.13 in (206 mm).
      • Rectangular Current Transformers - design for bus conductor applications instead of wire; 2 window sizes.
      • Split Core Current Transformers - Design for easy installation over existing bus or cable connections; available in 2 configurations.
      • Bushing Current Transformers - Designed to be installed into breaker cradle, allowing bus to be centered in the CT allowing potential to stay below 600V even in medium voltage applications.

       

      Square D offers 3 models of voltage transformers:

      • 450R: Designed for accurate voltage measurements with 0.3 accuracy; designed for switchboard use with a wide range of electrical indicating, recording instruments and protective relays in power systems
      • 460R: Designed for voltage indication with lower accuracy and smaller burdens; designed for use with voltmeters, transducers and other types of electrical indicating and recording instrumentation
      • 470R: Designed for extremely accurate voltage measurement where low burden is to be used; ideal for applications such as input to PLC modules and other electronic devices with high input impedance


      Current Transformers

      • High thermal ratings for short time use
      • Molded thermo-plastic cases
      • Permanent polarity marks molded into case and large easy to read ratios
      • Rugged mounting brackets
      • Large combination of product available through Square D (2 Distribution Centers)

      Voltage Transformers

      • ANSI C57.13 and CSA C13
      • UL recognized XODW2
      • Permanent polarity marks are molded into the case
      • Ratio clearly marked on case
      • Fully insulated threaded studs and nuts for customer connections
      • 10kV BIL, 60HZ, 600 V, ANSI C57.13

      Benefits


      Applications

      Instrument transformers are ideally suited in the following applications:
      • Indoor
      • Switchgear assemblies
      • Motor controllers
      • Over power transformer bushings
      • Over circuit breaker bushings
      • Monitoring
      • Metering
      • Relaying
      • Current sensing