三种高压抽出式开关柜的比拟(国外英文资料).docVIP

三种低压抽出式开关柜的比较(国外英文资料) One, three kinds of low pressure extraction type open ark comparison Low voltage draw-out switch cabinet without a knife switch, reduce the component installation space, increased goes back inside ark, the same specifications of the drawer can be used interchangeably, reducing the outage time, widely used in the low voltage complete sets of equipment. All sorts of performance exceed the fixed ark. There are three best-selling drawer cabinets: MNS, GCS, and GCK. These three low pressure extraction cabinets are similar in appearance, and their internal functions and unit structures vary. Two, low voltage complete switch equipment oneself insufficient Although our countrys low voltage switchgear in yield and output value has had the very big enhancement, but the product variety and performance is also far cannot satisfy the demand of the market, product itself is the problem. (1) materials The flame retardant of the insulating material is not qualified, which causes the safety hidden danger in the low-voltage complete switchgear. Low voltage complete switch equipment main conductor of the copper platoon, which often leads to low load and heat. The actual load flow of the device is lowered, and the design requirement of the device is not met. Auxiliary parts There is also a large gap between the second connector and the terminal and the terminal in our country, which leads to the short life of the low-voltage complete switchgear. (3) components The level of the component and the quality are different, some fake and inferior products occupy the market, affecting the low voltage set switch in our country. The effect of low pressure extraction cabinet on electrical performance Insulation performance Low voltage draw-out switchgear insulation coordination is according to the environmental conditions of equipment, installed on the power supply system, insulation performance factors such as the minimum clearance and creepage distance. Good insulation is