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How do you equipped with European boxes? Don't worry, below, European box transitions will introduce everyone.
Box of high voltage side equipped
(1) The box will be divided into a smart terminal type and a dual-circuit power supply type according to the primary wire picking method on the high voltage side. It is the smart terminal box that does not need to be fully considered: Two out), can be seen as a dual-circuit power supply box.
(2) The European box has a high voltage side with a knife gate. Also there is a load switch - fuse constitutes maintenance. Taking into account the box-changing engineering budget, for the capacity of no more than 800kV · a, the high-voltage side maintenance is not high, and the rear side is used.
(3) The high pressure load switch equipped with the European box is more common to the FLN-12 hexafluorinated sulfur load switch.
(4) Maintenance of high pressure fuse melt-based rated currents are selected:
Irr = kigmax
IRR - rated current of the melt, a;
K - index value, usually use 1.3:
Igmax - transformer high voltage side rated current.
(5) Fully consider the safety factor on the operation process and overhaul, and the European box changes high-voltage side equipments should meet the following requirements.
1 The load switch has ground protection in the disconnection, ensuring maintenance safety factor.
2 The load switch is guaranteed to lock each other to ensure the operating safety factor.
(6) Modern American box changes due to high pressure load switch a fuse constitutes electrical products and transformer combined two, assembled in the same oil-changing box body, including position load switches, storage fuse, plug-in fuse, and transformer. Its dual-circuit power supply is based on the internal connection end of the conversion position load switch.
Contact: Manager Yang
Sales hotline: 0516-83252111
Address: No. 36, High-tech Road, Economic Development Zone, Xuzhou City, Jiangsu Province