Testing device for undervoltage tripper
A technology of undervoltage release and testing device, which is applied in the direction of circuit breaker testing, etc., can solve the problems of inability to detect the tripping force of the undervoltage release, difficulty in adapting to the accuracy requirements of the undervoltage release, etc., and achieve increased Types, improved detection speed, comprehensive effect of detection data
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Embodiment 1
[0020] Such as figure 1 , the undervoltage release test device of this embodiment includes: the maximum output voltage is not less than the rated operating voltage U of the undervoltage release Double programmable power supply 1, force measuring device 4, and computer 5; the computer 5 is connected to the programmable power supply 1 for sending the control signal of the programmable power supply 1 and receiving the output voltage signal of the programmable power supply 1; The programmable power supply 1 is connected to the coil of an undervoltage release 2 to be tested; the detection signal output terminal of the force measuring device 4 for detecting the tripping force of the undervoltage release 2 to be tested is connected to the computer 5; the tripping force testing part of the force measuring device 4 is set opposite to the armature 2-1 of the release 2 to be tested. Among them, the programmable power supply can use the APS8000L linear programmable AC power supply under...
Embodiment 2
[0024] The parameter testing method of the undervoltage release in the described embodiment 1 includes:
[0025] Step a, the armature 2-1 of the undervoltage release 2 to be tested is released and pressed against the testing part of the force measuring device, so that the force measuring device 4 obtains an initial data, and transmits the initial data to the computer 5;
[0026] Step b, control the output voltage of the programmable power supply 1 from 30%* to 30% by the computer 5 U step to 90%* U, record the time point of this step as the first initial time point t1, and start counting; if the initial data becomes smaller or disappears, immediately record this time point through the computer 5, which is the first response time point t2, then The tripping response time Tr=t2-t1 is obtained; if the initial data has no change or the tripping response time Tr is not within the standard response time range of the undervoltage release 2 to be tested, the undervoltage tripping i...
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