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Used isolator in Quebec, Canada

  • Trusted Seller
    Signal Transformer MPI-200-20

    Signal Transformer MPI-200-20

    • Manufacturer: Signal Transformer

    🔌 Technical Sheet – SIGNAL TRANSFORMER MPI-200-20 (Used) 🧩 General Information: - Brand: Signal Transformer - Model: MPI-200-20 - Type: Chassis-Mount Power Isolation Transformer - Series: MPI (Medical Power Iso...

    $58 USD
    Delson, Canada
  • Trusted Seller
    MARCUS MC 500I

    MARCUS MC 500I

    • Manufacturer: Marcus

    MARCUS MC 500I Transformer Technical Specifications - Brand: Marcus - Model: MC 500I - Power Rating: 500 VA - Primary Voltage: 240 V - Secondary Voltage: 120 V - Secondary Current: 4.17 A - Frequency: 60 Hz - T...

    $36 USD
    Delson, Canada
  • Trusted Seller
    Siemens 4AM5941‑8BE40‑0C SIDAC‑T

    Siemens 4AM5941‑8BE40‑0C SIDAC‑T

    • Manufacturer: Siemens

    Product Sheet – Siemens 4AM5941‑8BE40‑0C SIDAC‑T (Used) Type: Control / Safety Transformer (Single-phase) Brand: Siemens Series: SIDAC‑T Model: 4AM5941‑8BE40‑0C Condition: Used, in good working condition ---...

    $291 USD
    Delson, Canada
  • Trusted Seller
    BLOCK USTE 400/2×115 (400 VA/2×115 V)

    BLOCK USTE 400/2×115 (400 VA/2×115 V)

    • Manufacturer: BLOCK

    ⚙️ Technical Specifications - Brand / Model: BLOCK USTE 400/2×115 - Type: Control or isolation transformer - Rated Power: 400 VA (continuous operation) - Peak Power Capacity: up to 1440 VA (short-term / inrush) ...

    $55 USD
    Delson, Canada

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.