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Used Current Transformer (Ct) in Germany

  • Artis LA 205S/SP1 13105 Current

    Artis LA 205S/SP1 13105 Current transformer 1 2000 with 3 blade receptacles

    • Manufacturer: Artis

    Artis LA 205S/SP1 13105 Current transformer 1 : 2000 with 3 flat receptacles, used, good condition, 100% functional, scope of delivery according to photos

    $13 USD
    Remscheid, Germany
  • Siemens 4NC3617 0CE03 Current transformer

    Siemens 4NC3617 0CE03 Current transformer 100 / 1A E Stand 01

    • Manufacturer: Siemens

    Siemens 4NC3617-0CE03 Current transformer 100 / 1A, 50-60Hz, E-Stand 01 , unused in opened original packaging, 100% functional, scope of delivery as per photos

    $12 USD
    Remscheid, Germany
  • MBS ASK 41.4 / 300

    MBS ASK 41.4 / 300 Plug-on current transformer 5A 50 60Hz No. 00/CU23513

    • Manufacturer: MBS

    MBS ASK 41.4 / 300 plug-on current transformer 5A 50 - 60Hz No. 00/CU23513, used, good condition, 100% functional, scope of delivery according to photos

    $7 USD
    Remscheid, Germany
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    SGB DOTEL 1600 H/20

    • Manufacturer: SGB

    Three-phase oil transformer in hermetic design rated power 1600 kVA, rated ratio 20 / 0.69 kV condition: overhauled description: currently rented!

    Blankenfelde-Mahlow, Germany
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    SBG DOTEL 400/20

    • Manufacturer: SGB

    Three-phase oil transformer in hermetic design rated power 400 kVA, rated ratio 20 / 0.4 kV condition: overhauled description: currently rented!

    Blankenfelde-Mahlow, Germany
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    SGB DOTEL 1600 H/20

    • Manufacturer: SGB

    Three-phase oil transformer in hermetic design rated power 1600 kVA, rated ratio 20 / 0.69 kV condition: overhauled description: currently rented!

    Blankenfelde-Mahlow, Germany
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    2006 ABB TNOSCTN-10/20-10PNS

    • Manufacturer: ABB

    Three-phase oil-filled transformer in hermetic design Rated power 160 kVA, Rated ratio 20-10 / 0.4 kV Condition: Refurbished Description: Currently leased!

    Blankenfelde-Mahlow, Germany
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    SGB oil transformer

    • Manufacturer: SGB

    Three-phase oil transformer in hermetic design rated power 630 kVA, rated ratio 20 / 0.4 kV condition: overhauled description: Location: CLP Currently rented!

    Blankenfelde-Mahlow, Germany
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    IFT DH 630/12

    • Manufacturer: IFT

    Three-phase oil transformer in hermetic design. rated power 630 kVA, rated transmission 10 - 6 / 0,4 kV condition: overhauled description: Currently rented!

    Blankenfelde-Mahlow, Germany
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    2004 Siemens 4HB5867-3ZA

    • Manufacturer: Siemens

    Three-phase oil-filled transformer in hermetically sealed construction Rated power 630 kVA, rated transformation 20 / 0.4 kV Condition: Overhauled Description: Currently rented!

    Blankenfelde-Mahlow, Germany
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    2013 SGB DOTUL 1000 H/10

    • Manufacturer: SGB

    Three-phase oil transformer in hermetic design. rated power 1000 kVA, rated transmission 10 / 0,4 kV condition: overhauled description: Currently rented!

    Blankenfelde-Mahlow, Germany
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    IFT DH 630/12

    • Manufacturer: IFT

    Three-phase oil transformer in hermetic design. rated power 630 kVA, rated transmission 10 - 6 / 0,4 kV condition: overhauled description: Currently rented!

    Blankenfelde-Mahlow, Germany
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    Pauwels

    • Manufacturer: Pauwels

    Three-phase oil transformer in Dehner design. rated power 630 kVA, rated transmission 20 / 0,4 kV condition: overhauled description: Currently rented! location: CLP

    Blankenfelde-Mahlow, Germany
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    BBC GBA11-800

    • Manufacturer: BBC

    Three-phase oil-immersed transformer in a Dehner design Rated power 800 kVA, rated ratio 20 / 0.4 kV condition: overhauled description: The transformer can be converted to hermetic version with OS outer cone bush...

    Blankenfelde-Mahlow, Germany
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    BBC GBE S1-630

    • Manufacturer: BBC

    Three-phase oil transformer in hermetic design rated power 630 kVA, rated ratio 10 / 0.4 kV condition: overhauled description: Currently rented out!

    Blankenfelde-Mahlow, Germany
45678

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.