In power network, breaker is the important composition component of switch of each voltage grade, the its cent, delicacy that closes gate and dependability decide the various facilities that use phone whether safe economy moves.
One, the fundamental condition that breaker compounds manipulator compose
Breaker is the drive disk assembly that adopts manipulator form, the way that changes force and action point will come true to set a goal beforehand, its energy source has electric power and labor power commonly two kinds, outside dividing manpower orgnaization, like electromagnetism orgnaization, pneumatic orgnaization, bedspring orgnaization and hydraulic press compose all is the work that place of support electric power does, the energy that relies on the instant releases the action that achieves breaker. In light of the new facility that from farming net the place in transforming uses, although the component has new improve, but still do not have major breakthrough, still existing behavioral segment is too much, activity lubricates to wait for a respect and create the problem of orgnaization efficiency, may wear away again at the same time and attaint component, the fault rate of the orgnaization is accordingly higher.
Basis in recent years practice and spot run experience, in all sorts of breakdown of breaker, orgnaization operation is the first place, it is about most probably, and in these orgnaization breakdown, manipulator compose breakdown holds the majority again. Investigate because manipulator compose is in a static state to run state,its reason basically is, its status of job of each activity link cannot monitor, hidden trouble cannot discover in time, especially the equipment outdoor, because suffer the effect of ambient conditions, appear more easily breakdown, operate the structure of the orgnaization to optimize so, component uses new material, new technology to reach raise treatment precision to wait, it is a when will eliminate existence flaw henceforth long-term mission.
2, the main demand that manipulator compose should have
Because break us implement whether effective and credible action, depend on on older rate the function of manipulator compose and quality, so according to breaker different, the manipulator form that its provide should satisfy place to want property and its reliability, basically have the following:
1, the function closing gate with manipulator due and enough compose
Between real work, the energy of manipulator compose won't maintain in rating, change inside certain limits however. Promulgate by former ministry regulations requirement, its floor level is worth the 80%-85% that is rating, 110% what upper limit value is rating, that is to say, when operating an orgnaization to be worth in floor level, can involve accrete, short-circuit current, and when upper limit is worth, because operate force,should not pass big and attaint is relevant component.
2, should have maintain function closing gate
Command when the operation duration is short, operation function cooperates short when, due maintain orgnaization closing gate, after disappearing with assuring command closing gate and operation function, breaker still maintains closing brake position.
Previous12 Next

Previous:The harm of 35kV system overvoltage
Next：The sort of high-pressured switch ark reachs common breakdown