Energy » Transformers » Current Transformer (CT) » Sonora

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Used Current Transformer (Ct) in Sonora, Mexico

  • Trusted Seller
    Three-phase dry transformer 45 kVA

    Three-phase dry transformer 45 kVA 440 V–220/127 V brand OLSUN

    • Manufacturer: OLSUN

    Three-phase dry transformer 45 kVA 440 V–220/127 V brand OLSUN Technical characteristics Nominal power of 45 kVA Three-phase dry-type Primary voltage of 440 V with adjustment taps 452 V, 451 V, 440 V, 429 V and 4...

    Hermosillo, Mexico
  • Trusted Seller
    EEI DS-1.

    EEI DS-1.

    • Manufacturer: EEI

    Itcc 70 x InA, idcc 175 x InA. NBAI 10 kV. Used 400 ratio current transformer: 5 AMP DS-1 EEI brand | Class: 0.6kV. | Frequency: 60 HZ.

    Hermosillo, Mexico
  • Trusted Seller
    EEI RCT.

    EEI RCT.

    • Manufacturer: EEI

    Idcc 125 KA. Used 200 ratio current transformer: 5 AMP RCT brand EEI | Class: 0.6kV. | Frequency: 60 HZ. | Nbai: 10kV.

    Hermosillo, Mexico

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.