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QLFM Isolated Phase Busway
QLFM Isolated Phase Busway

QLFM Isolated Phase Busway

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Wetown Electric Group Co.,Ltd

China

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Aluminum Construction and Insulator Support Both the enclosure and all the conductor of isolated phase enclosed bus duct are all welded by aluminum plate, providing high conductivity, corrosion-free operation. The conductor is supported by tripost insulator and the pressure is evenly applied on the insulators with more stability being ensured. Contamination Protection Bus system can be effectively prevented from the grounding fault caused by moisture, dust and external factors under the protection of enclosure. Short-circuit will be avoided between phases because of isolated phase enclosed structure. Conical insulator is adopted as contamination barrier when necessary, e.g. bus connection and device interface with IP protection up to IP54 and above, and so bus duct can run safely and steadily by means of micro-positive pressure without the impact by moisture, dust and condensation on insulator. Low Heat Loss and Temperature Rise The metal housings are electrically connected so that induced current, nearly of the magnitude of the phase current, can flow through the housing, in the opposite direction from the phase current. The magnetic field produced by this current nearly exactly offset the magnetic field produced by the phase current, so there is almost no external magnetic field produced. As a result nearly no heat loss or temperature rise will occur with the steel structure or reinforced concrete around the busduct system.

*QLFM Isolated Phase Busway is suitable for transmission system of 3.6~40.5Kv, rated current from 1000 to
6800A, AC 50~60 Hz.

*It starts from the generator terminal and then the main lead out bus duct circuit at the low-voltage
side of the transformer; branch circuit from main circuit to Station Service/Auxiliary Transformers, excitation transformer, PT,
arrester cabinet, excitation cabinet, Load Switchgear and so on.
*Subordinate equipment cabinets, such as PT cabinet, arrester cabinet, load switchgear and so on.
*Current transformer.
*Hydrogen gas detection device.
*Intelligent micro-pressure device, device of maintaining hot or drying air, heaters, dehumidification device with silica
respirator, etc..
*On-line, portable infrared TME, Platinum resistance TME.
*Galvnized steel construction install.
*Argon arc welding machine, welding stick, etc..
*Air-cooled device.

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