Energy » Transformers » Current Transformer (CT) » Brandenburg

Search By Manufacturer

Building Filters

5

Used construction in Brandenburg, Germany

  • no-image_en.png

    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
  • no-image_en.png

    Pauwels

    • Manufacturer: Pauwels

    Three-phase oil transformer in Dehner construction Rated power 630 kVA, rated voltage ratio 20 / 0.4 kV condition: revised description: Currently rented! Location: CLP

    Blankenfelde-Mahlow, Germany
  • no-image_en.png

    Pauwels

    • Manufacturer: Pauwels

    Three-phase oil transformer in hermetic construction Rated power 630 kVA, rated ratio 20 / 0.4 kV condition: refurbished description: height information without rollers Location: CLP Currently rented!

    Blankenfelde-Mahlow, Germany
  • no-image_en.png

    Volta

    • Manufacturer: Volta

    Three-phase oil transformer in hermetic construction Rated power 630 kVA, rated ratio 20 / 0.4 kV condition: refurbished description: Currently rented! Height measurements without rollers Location: CLP

    Blankenfelde-Mahlow, Germany
  • no-image_en.png

    BBC GBA11-800

    • Manufacturer: BBC

    Three-phase oil transformer in hermetic construction Rated input 800 kVA, rated transformation 20 / 0.4 kV condition: refurbished description: The transformer can be converted to hermetic version with OS external...

    Blankenfelde-Mahlow, Germany

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.