A High Voltage Motor Accident Control Circuit
An accident control, high-voltage technology, applied in emergency protection circuit devices, electrical components, etc., can solve problems such as equipment fault judgment, switch refusal, and no record, avoid personal injury and equipment safety risks, and improve reliability. sexual effect
Active Publication Date: 2019-03-05
DATANG GUIZHOU FAER POWER GENERATION
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Problems solved by technology
[0004] In order to solve the above technical problems, the present invention provides a high-voltage motor accident control circuit, the high-voltage motor accident control circuit solves the problem caused by the plug-in failure of the protection device for the 6kV switch of the high-voltage motor by using two pairs of normally open contact accident buttons. The problem of "refusal to move" the switch and the problem that there is no record and no monitoring after the accident button is pressed artificially, so that the technicians cannot correctly judge the equipment failure
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[0014] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.
[0015] Such as figure 1 A high-voltage motor accident control circuit is shown, including emergency button A, intermediate relay ZJ and its auxiliary contacts, protection outlet relay CKJ and its auxiliary contacts, closing relay HWJ, jumping locking relay TBJ, tripping coil TQ, protection The exit signal relay K01 and the mechanical normally open contact K, the mechanical normally open contact K is linked with the high-voltage motor 6KV switch; the emergency button A is connected in series with the intermediate relay ZJ between the power supply ±WC; the intermediate relay ZJ The normally open auxiliary contact ZJ1 is connected in series with the protection outlet relay CKJ and then connected in series between the power supply ±WC;
[0016] The closing relay HWJ, jumping locking relay TBJ, mechanical normally open contact K and tr...
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The invention provides a high-voltage motor accident control circuit which comprises the components of an accident button A, an intermediate relay and an auxiliary contact thereof, a protective outlet relay CKJ and an auxiliary contact thereof, a switching-on relay HWJ, a leaping locking relay TBJ, a trip coil TQ, a protective outlet signal relay K01 and a mechanical normally open contact K, wherein the mechanical normally open contact K is interlocked with the 6KV voltage of a high-voltage motor. After the accident button A is serially connected with the intermediate relay ZJ, the serially connected accident button A and the intermediate relay ZJ is connected between the anode -WC and the cathode +WC of a power supply. According to the high-voltage motor accident control circuit, a pair of normally open contacts of the accident button A are connected with a non-electric point 1 for realizing protection. After the accident button is pressed, the non-electric point 1 can be used as a remote communication point for transmitting to a the background service manger machine of a factory monitoring system. The background service manager machine can wholly store action time, and the result facilitates querying of maintaining technical personnel. The normally open contact of an accident B is directly connected with the trip coil of the 6KV switch. The high-voltage motor accident control circuit can settle a problem of action failure of the 6KV switch caused by outlet inserter fault of a protective device.
Description
technical field [0001] The invention relates to the technical field of high-voltage motor accident control in thermal power plants, in particular to a high-voltage motor accident control circuit. Background technique [0002] The original high-voltage motor accident button is a pair of normally open contacts and a pair of normally closed contacts. The designed accident trip circuit mainly uses the normally open contacts of the accident button to connect to the strong current input plug-in non-electric power 1 of the protection device. When the inspector finds that the motor is abnormal on the spot, press the local accident trip button, the normally open contact of the accident button is closed, and the normally open contact of the protection outlet relay is closed, and then the trip coil TQ of the 6kV switch is tripped by the protection outlet pressure plate. Description of the existing problem: all outlets of the electric power protection trip of the 6kV switch of the motor...
Claims
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IPC IPC(8): H02H7/08
CPCH02H7/08
Inventor 徐友斌杨洋王顺艳
Owner DATANG GUIZHOU FAER POWER GENERATION