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UEE High Voltage Cable Coupler System ELECTRICAL RATING Coupler ratings at sea-level only: operating ratings must take into account cable capacity and altitude. Current: 440 or 600 Amperes Voltage: 25,000 Volts Unit Electrical Engineering Ltd. manufactures a high voltage trailing cable couplers rated up to 25,000 Volts AC and up to 600 Amperes. Equipment in large mining operations often requires a high-voltage power supply. When this voltage is combined with large fluctuating currents, safety, efficiency and reliability are priorities. Safety is the highest priority when handling high-voltage cable couplers and the UEE system is designed to CAN/ CSA M421 standards by incorporating a pin arrangement where the ground pin makes first and breaks last and the pilot pin makes last and breaks first. This ensures the supply breaker is not operated until the coupler is grounded and phase contacts have connected. UEE uses a shield coating that confines the dielectric field to the insulation. Thus reducing the possibility of electric shock due to deterioration of the insulators. Reliability of this system was achieved by basing design features on experience with field cable repair. Potential features and benefits were identified and incorporated into the coupler design. View the photo gallery or download a brochure. FEATURES & BENEFITS Rigid, sand-casted aluminum housing makes the coupler light and durable. Individually replaceable parts minimize coupler inventory cost. Shielding of the phases reduces the possibility of damaging, high energy, phase to phase faults. Use of a unique "collet system"* for phase wire terminals ensures a simple and secure connection for low contact resistance and good heat transfer replaces set screw arrangement and soldering of wire. Entrance fitting, consisting of a cable clamp and a seal arrangement, provides a watertight and secure cable grip. Heavy duty pilot pin and socket ensure low-resistance path for control signal. Cable adapter provides stress control and air-free seal on cable wire termination. All copper parts are silver-plated to increase conductivity and prevent conductor oxidation. All stainless steel hardware for long life and reliable assembly and disassembly. Connector assembly is interchangable with other North American manufactured plugs. Four-point configuration of the eye-bolt system uses two eye-bolts for separating coupler bodies. The four-point eyebolt locking system provides quick, secure and watertight coupler connection. Coupler body incorporate two handles that allow for easy handling when connecting/disconnecting couplers. * patent issued in Canada / USA / Australia

STANDARDS CAN/CSA M421 Tested to IEEE Std. 386-1995 (Separable Insulated Connector Systems for Power Distribution Systems) APPLICATION This high voltage trailing cable coupler system is used in open-pit and underground mines, connecting electrical, mobile distribution systems and equipment rated up to 25,000 Volts.