Automated calibrating device for mutual inductors
An automatic verification and verification device technology, which is applied in the direction of measuring devices, instruments, and measuring electrical variables, can solve the problems of taking a long time, achieve the effects of fast wiring, shorten the verification time, and improve the verification efficiency
Active Publication Date: 2012-02-15
STATE GRID ZHEJIANG ELECTRIC POWER +1
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Problems solved by technology
Due to the large number of transformer testing items, multiple sets of different equipment are required for verification. It takes a lot of time to manually connect and disconnect the wires during these verifications, which has become the main bottleneck for improving the efficiency of transformer verification.
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[0022] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0023] Such as figure 1 , 2 , 3, the present invention includes a frame body 1, a movable conveying line 2 arranged on the frame body 1, an insulation resistor arranged on the frame body 1 next to the conveying line 2 in sequence according to the advancing direction of the conveying line 2, The preventive test device 3 for withstand voltage and secondary turn-to-turn insulation tests, the error verification device 4 for error and magnetic saturation tests, and the control device for controlling the actions of the preventive test device 3 and the error verification device 4, said Both the preventive test device 3 and the error verification device 4 include the second verification unit 9 and the first verification unit 8 which are sequentially arranged on the frame body 1 beside the transfer line 2 according to the advancing direction...
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The invention discloses an automated calibrating device for mutual inductors, which relates to a calibrating device for mutual inductors. At present, a calibrating system for mutual inductors is implemented by adopting a manual line connection and automatic measurement mode, because the testing items for mutual inductors are numerous, multiple sets of different equipment are required to carry out calibration on the testing items, and when the calibrations are performed, line connection and disconnection operations need a large amount of time, and the efficiency is low. The automated calibrating device disclosed by the invention is characterized by comprising a rack body, a transmission line, a preventive test device, an error calibrating device and a control device, wherein the transmission line is arranged in the middle of the rack body; the preventive test device and the error calibrating device are sequentially arranged on the rack body beside the transmission line along the forward motion direction of the transmission line, the preventive test device is used for insulation resistance, power frequency withstand voltage and secondary turn-to-turn insulation tests, the error calibrating device is used for error and magnetic saturation tests, and the control device is used for controlling the preventive test device and the error calibrating device to act. The preventive test device and the error calibrating device can carry out automatic line connection on mutual inductors, and can simultaneously calibrate different items of two batches of mutual inductors, thereby shortening the calibration time and improving the calibration efficiency.
Description
technical field [0001] The invention relates to a transformer testing device. Background technique [0002] The current transformer used in the power grid is to reduce the large current in the primary line to the small current required by the secondary measurement circuit, and mainly realize the functions of electrical isolation and proportional measurement at both ends of the high and low voltage. The current transformer for metering is one of the main measuring instruments used in the settlement of electric energy trade, and it belongs to the national compulsory verification specification. Each metering current transformer needs to pass the initial verification and periodic verification before it can be used normally. With the rapid development of the economy, the number of current transformers used for measurement has also increased sharply. The traditional manual verification method can no longer meet the rapidly growing demand for transformer verification. It is impera...
Claims
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Inventor 张燕黄金娟肖涛周永佳朱重冶沈雄
Owner STATE GRID ZHEJIANG ELECTRIC POWER