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鉴于苏联缺乏400千伏安成套变电站用的开关柜,提出用250千伏安开关柜作为代用。对主要电源来说改装工作是,先将1号馈电线的自动装置拆掉,将接线板装在这个位置上,再用3根(1×120)保险丝或3个(1×150)的自动重合闸导线将接线板同400安自动装置相连。对备用电源来说,是在开关柜一侧装闸刀开关和ЯРВ 400安熔断器,再由熔断丝ПВ(3×120)或自动重合闸АПВ(3×150)与0.38千伏配电线相接。为了将变压器固定在开关柜上,要再焊上50×50×5的角钢,拆除开关柜壁上的加强筋并加大变压器抽头套管。
In view of the Soviet Union’s lack of switchgear for 400kV substations, it is proposed to use a 250kV switchgear as a substitute. For the main power supply, the modification work is to firstly remove the automatic device of feeder No. 1, place the terminal board in this position, and then use three (1 × 120) fuses or 3 (1 × 150) automatic The reclosing wire connects the terminal block to the 400-amp automatic unit. For the backup power supply, the switch and the ЯРВ 400-amp fuse are installed on the side of the switchgear and are connected by fuse (3 × 120) or autorecloser АПВ (3 × 150) with a 0.38 kV distribution line Meet. In order to fix the transformer on the switchgear, 50 × 50 × 5 angle steel should be welded again, the stiffener on the wall of the switchgear should be removed and the transformer tap casing should be enlarged.