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Used dcs system in Germany

  • Siemens three-phase control transformer 24

    Siemens three-phase control transformer 24 V DC / 20 A T50/B Art. No. 4AV3295-7AA00 Power Supply

    • Manufacturer: Siemens

    Siemens Three-Phase Control Transformer 24 V DC / 20 A T50/B Item No. 4AV3295-7AA00 The Siemens control transformer 4AV3295-7AA00 of the T50/B series is a three-phase transformer with integrated rectification. It...

    Lennestadt, Germany
  • Siemens transformer 4AV3095-1AA00 power supply

    Siemens transformer 4AV3095-1AA00 power supply item no. 4008260073

    • Manufacturer: Siemens

    Siemens Transformer 4AV3095-1AA00 Power Supply Item No. 4008260073 Description: Used Siemens transformer with integrated rectifier and smoothing capacitor. The device has been tested, is fully functional, and is ...

    Lennestadt, Germany
  • Siemens SIDAC-S transformer item no.

    Siemens SIDAC-S transformer item no. 4AV3300-2EB00-0C

    • Manufacturer: Siemens

    Siemens SIDAC-S Transformer Item No. 4AV3300-2EB00-0C Item number: 4AV3300-2EB00-0C Manufacturer: Siemens Technical description: The Siemens SIDAC-S transformer is a three-phase power supply module for industrial...

    Lennestadt, Germany
  • SIEMENS 4AV3400-2AB SIDAC TRANSFORMER

    SIEMENS 4AV3400-2AB SIDAC TRANSFORMER

    • Manufacturer: Siemens
    • Model: 4AV3400-2AB

    SIEMENS 4AV3400-2AB SIDAC-S Transformer – Power Supply Unit Item number: 4AV3400-2AB Condition: Used, removed from a live system Scope of delivery: As shown and described in the photos Description: The SIEMENS 4A...

    Lennestadt, 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.