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New Current Transformer (Ct) in California, USA

  • ACME ELECTRIC Dry Type 45

    ACME ELECTRIC Dry Type 45 KVA HV 480V LV 240/120V Transformer 49NT33 T3045K0023B

    • Manufacturer: Acme
    • Phase type: Three-phase

    Up for sale is new surplus ACME ELECTRIC Dry Type 45 KVA HV 480V LV 240/120V Transformer Grainger part number 49NT33 Model T3045K0023B. Please see pictures of tag for detailed specification. Has a couple small co...

    $2,500 USD
    Santa Clarita, CA
  • Eaton V48M28F30CUEE 30 KVA HV:

    Eaton V48M28F30CUEE 30 KVA HV: 480V LV: 208Y/120V Transformer

    • Manufacturer: Eaton

    Up for sale is a new surplus Eaton 30 KVA transformer, model V48M28F30CUEE. HV: 480V LV: 208Y/120V Please see pictures of tag for all specification. Can be seen in person at Sky-Pole, Inc. in Santa Clarita, CA. ...

    $1,500 USD
    Santa Clarita, CA
  • General Electric GE 9T83C9872G03 30KVA

    General Electric GE 9T83C9872G03 30KVA HV: 480V LV: 208/120V Transformer 3 Phase

    • Manufacturer: GE

    Up for sale is new surplus General Electric 30 KVA transformer, model 9T83C9872G03 HV: 480V LV: 208/120V. Please see pictures of tag for all specifications. Can be seen in person at Sky-Pole, Inc. in Santa Clari...

    $1,500 USD
    Santa Clarita, CA
  • Instek GIT-5060 Isolated Transformer, Option

    Instek GIT-5060 Isolated Transformer, Option for GLN-5040A

    • Manufacturer: GW Instek

    For conduction measurements, there is a lot of leakage current due to the nature of the artificial mains network design principal. The network must be well grounded, otherwise a potential safety hazard may exist....

    Hayward, CA
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    GE General Electric GEW T-3B Transformer 30KVA 3PH 380V Pri 200-240V Sec 72.2A

    • Manufacturer: GE

    NEW GE General Electric GEW T-3B Transformer 30KVA 3PH 380V Pri 200-240V Sec 72.2A Specifications: 30 kVA, 3 Phase, 50/60 Hz frequency. Voltage: Primary 380 V; Secondary 200-240 V. Current: Secondary rated curren...

    $1,800 USD
    Ventura, CA
  • Marcus M0250D Transformer

    Marcus M0250D Transformer

    • Manufacturer: Marcus

    Van Aliso Enterprises Inc is in the business of representing quality used/New Goods. We are a company that is dedicated to representing what we sell accurately and keeping our customers happy with the purchases t...

    $150 USD
    Santa Paula, CA

Overview

Current transformers (CTs) convert high alternating currents into a scaled secondary current for meters, relays and protection systems. Available as window, wound or bar types, CTs vary by ratio, accuracy class and saturation behavior. Proper selection focuses on rated primary current, burden, insulation, knee-point for protection use, and condition when buying used for substations, switchgear, or industrial panels.

FAQ

What should I check when buying a used CT?

Verify the nameplate ratio and accuracy class, inspect for physical damage or oil leaks, request recent ratio and insulation test reports, and confirm the CT type (wound/window/bar) and its knee-point if used for protection.

How should a CT be prepared and shipped safely?

Drain and seal oil-filled CTs if required, protect bushings and cores, short and ground the secondary terminals, secure the unit to prevent shock, and use a carrier experienced with electrical equipment plus insurance.

What routine maintenance and tests are essential for CTs?

Perform visual inspections, insulation resistance tests, ratio and polarity checks, check for oil contamination on liquid-filled units, and schedule periodic accuracy and dielectric tests per manufacturer guidelines.