HCPD-9209
Partial discharge detector
More details HCPD-9209 The partial discharge inspection instrument is a multi-functional handheld instrument. It is based on geoelectric wave, ultrasonic wave, ultra-high frequency and high frequency current detection methods. It tests the partial discharge condition of the equipment and can read out the partial discharge amplitude and map waveform. It can provide The storage and readout functions of two-dimensional and three-dimensional maps can better evaluate the partial discharge situation of electrical equipment. Inductive voltage test series for partial discharge detection
HCPD-2000
Ultrasonic local discharge
inspection instrument
More details HCPD-2000 ultrasonic partial discharge inspection instrument is a detection device that collects abnormal ultrasonic signals of power lines and diagnoses hidden dangers of power line faults through software analysis. It is also suitable for the detection of partial discharges of insulators, cable heads, high-voltage bushings, CT/PT, lightning arresters, switches, etc. This device can determine the location and type of hidden faults without power outages. Inductive voltage test series for partial discharge detection
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HCPD-9209 Partial discharge inspection instrument HCPD-2000 Ultrasonic partial discharge inspection instrument HCPD-9109P Ultrasonic Partial Discharge Tester HCPD-9104 Partial Discharge Comprehensive Analyzer HCR3102A Transformer DC resistance tester HCR3103C Transformer DC resistance tester Click on the name to view details

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3108, 2021

10kV电网单相接地故障-单相接地故障的特征

(1)配电系统发生单相接地故障时,变电所绝缘监察装置的警铃响,“××母线接地”光字牌亮。中性点经消弧线圈接地的,还有“消弧线圈动作”的光字牌。 (2)当生发接故障时,绝缘监察装置的电压表指示为:故障相相电压降低或接近零,另两相电压高于相电压或接近于线电压。如是稳定性接地,电压表指示无摆动,若是电压表指针来回摆动,则表明为间歇性接地。 (3)当发生弧光接地产生过电压时,非故障相电压很高,电压表指针打到头。同时还伴有电压互感器一次熔丝熔断,严重时还会烧坏互感器。 但在某些情况下,配电系统尚未发生接地故障,系统的绝缘没有损坏,而是由于产生不对称状态等,绝缘监察也会报出接地信号,这往往会引起误判断而停电查找。

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