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The application of electric equipment of the switch on 10kV column on circuit

From;    Author:Stand originally
  summary: The high speed development as national economy, increase ceaselessly with n while, the client raised taller requirement to the dependability of power supply and power supply quality; Electric equipment of the switch on 10kV column is matching the rational application of the section in the net and branch line, finished one's contributions in work to raise power supply dependability to stand. But because development of our country various places is extremely lopsided, the structure of distribution network and overall arrangement are complex with each passing day, the switchgear of all sorts of technology levels is having different application.

1 preface

The high speed development as national economy, increase ceaselessly with n while, the client raised taller requirement to the dependability of power supply and power supply quality; Electric equipment of the switch on 10kV column is matching the rational application of the section in the net and branch line, finished one's contributions in work to raise power supply dependability to stand. But because development of our country various places is extremely lopsided, the structure of distribution network and overall arrangement are complex with each passing day, the switchgear of all sorts of technology levels is having different application.

The classification of electric equipment of the switch on column of 2   10kV

By destroy arc medium distinguishs, experienced compress air, magnetism to blow, material yield gas, oily, SF6, vacuum a few representative phase.

20 centuries the much oilier breaker of 50 time, because three-phase touchs a head to be the same as room, its destroy arc medium and insulation medium all are insulating oil, open a capacity to be under 1250A, explosion of the existence when opening fault current is dangerous. Develop in economy area, already washed out oily breaker gradually.

SF6 breaker and vacuum breaker are 20 centuries the product that 80 time development rises, 90 time receive wide application in our country, make the dominant product that replaces oily breaker. Its switched current reachs above in 16kA, open short-circuit current frequency to be amounted to 30 times, but 10 ~ 20 years of maintenance-free. Already had at the same time add outfit is dynamoelectric operation and controller implementation intelligence are changed and 3 Yao of " " function.

The application of electric equipment of the switch on column of 3   10kV on circuit

(1) breaker. After occurrence fault current according to make calm electric current and time tripping operation, equipment electromagnetism induction coil mixes one match to buckle linkage orgnaization, can leave already, can close the breaker that adds up to short-circuit current again, drive fault current capacity taller, as protection circuit is used. But because match net breaker protection to cooperate time weak point, often put in the malpractice of tripping operation of bypass the immediate leadership.
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