35BU | Aluminium High Voltage Open-Cut Coupler

Exclusive to AusProof and its sister companies, the 35BU is the only coupler in the world capable of withstanding 35,000 volts.

Released in 2013, the 35,000 volt coupler was developed in just 15 weeks after AusProof was approached by a client who required a coupler capable of operating at 35kV and had been unable to find an existing product to meet this need. Popularly used in Africa, Asia, Europe, and South America, some installations of the 35BU across South America include high altitude sites, with no issues reported. Common applications of the 35BU include supply of power from overhead lines to mobile transformers, as well as supplying power to dredges. Rated for 800A, the design of the 35BU also features a guide pin that will become enclosed in the body casting of the coupler when the system is closed, protecting it from external damage.

Contact us

  • Features

    • Earth Pilot Connector
    • Solid face and body casting
    • Silicone Phase Connectors
    • Higher mPa Aluminium Material
    • Detachable Adaptor Flange
    • Handles
    • All air expelled on joining
    • Silicone seal for face
    • Full phase to phase segregation with earth
    • Arc extinguishing Phase Insulators
    • Genderless design
  • Accessories

    • Adaptor – Gear Mount
    • Cast Protection Cover
    • Silicone Phase Connectors
    • Crimp Contacts
    • Gland – Armoured
    • Gland – Unarmoured
    • Insulated End Cover
    • Slide Hammer
    • Coupling Tool
    • CAT Skid

Technical Information

  • Specs

    Volts 35,000
    Amp 800
    LOA (mm) 895
    Weight (KG) 24.5
    Material Aluminium
    Volume (Litres) 6.0

  • Test Results

    Referenced to AS/NZS 1300, AS/NZS 1299 C22.2 No 298, IEEE 386
    Through Fault Current (Phase)
    Through Fault Current (Earth)
    AC HV Withstand (Phase) 72.0kV for one minute
    AC HV Withstand (Pilot) 1.0kV for one minute
    Temperature Rise 800A
    Ingress Protection
    Impulse Voltage 200kV
    Partial Discharge < 3 pC