Energy » Transformers » Current Transformer (CT) » Shanghai

Search By Manufacturer

Building Filters

3

Used single in Shanghai, China

  • Transformer (Transformer)

    Transformer (Transformer)

      ※ Product Overview Dry Isolation Transformer , with moisture resistance, easy maintenance and other advantages, can deeply reach the load center, suitable for power transmission and distribution sites such as sub...

      Shanghai, China
    • no-image_en.png

      Static Transfer Switch SANUPS S11A S11A302B011

        No. of input phases/wires: Single-phase 2-wire | Rated input voltage[v]: 100 | Input voltage range: ±15% of rated voltage | Rated input frequency[hz]: 50/60 | No. of output phases/wires: Single-phase 2-wire | Ra...

        Shanghai, China
      • High Pressure Combined Transformer

        High Pressure Combined Transformer

          Shanghai Metal Corporation is a leading High Pressure Combined Transformer manufacturer and supplier. JLS type three-phase oil-immersed outdoor high-voltage power metering box (hereinafter referred to as metering...

          Shanghai, China

        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.