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Product — Partial discharge inspection instrument - live detection method — ZPD-902 Partial discharge inspection instrument for switchgear
Product name：ZPD-902 Partial discharge inspection instrument for switchgear
Executive standard：IEC62478，DL/T 417-2006,Q/GDW11063-2013, Q/GDW 11059.8-2013，DL/T 1416-2015,Q/GDW 11316-2014，DL/T 555一2004
Other name：Ultrasonic & TEV partial discharge inspection instrument, charged partial discharge inspection instrument, online partial discharge inspection instrument, handheld partial discharge inspection instrument
Component：PD host, handheld concentrator, TEV sensor, headset, charger
| Purpose & brief description |
| ● ZPD-902 partial discharge inspection instrument for switchgear is mainly applicable to live partial discharge test of high voltage switchgear and ring network cabinet; ● It is equipped with three kinds of sensors: built-in ultrasonic sensor, TEV sensor and hand-held non-contact ultrasonic concentrator. The built-in sensor is used for contact measurement of switchgear body, and the hand-held non-contact ultrasonic concentrator is used for scanning bus bridge and wall bushing; ● During measurement, the LCD displays the original discharge waveform, DB value and yellow, green and red warning value, which is intuitive and reliable; ● Take dbmv as the unit, and use transient earth voltage (TEV) and ultrasonic detection to detect the size of partial discharge; ● When ultrasonic measurement is used, when there is discharge signal, the horizontal ratio and vertical ratio shall be compared to see the trend, and the conclusion can be drawn after more than two measurements; Serious discharge can be diagnosed when there is discharge waveform when measured by TEV. In short, TEV is the main method, supplemented by ultrasound; ● Add earphone monitoring function, and realize real-time monitoring of partial discharge signal through earphone in ultrasonic mode; ● Strong anti-interference ability and automatic storage of test data, which is conducive to the review of test records and subsequent analysis of test data; ● Easy to use, small size, light weight and easy to carry; |
| Test purpose |
| ● The purpose of partial discharge test is to find defects in equipment structure and manufacturing process; For example, the local electric field intensity inside the insulation is too high; Metal parts have sharp corners; The insulation is mixed with impurities or partially defective, and the electrical connection between metal grounding parts and conductors in the product is poor, so as to eliminate these defects and prevent partial discharge from damaging the insulation; ● Partial discharge refers to the non penetrating discharge between the electrodes of the insulating medium in the high voltage apparatus under the action of high electric field strength; Therefore, the function of local discharge test can detect the potential insulation hazards of power equipment; |
| technical parameter |
| ● TEV measurement: measurement range: - 10 ~ 60dB, step size: 1dB, resolution: 1dB; ● Ultrasonic measurement: measurement range: - 60 ~ 68dB, step size: 1dB, resolution: 1dB; ● Host: display resolution: 320x240; ● Lateral sensitivity: 50uS / div ~ 2m s / div; ● Vertical sensitivity: 4uv / div ~ 400uv / div (ultrasonic); ● 400uv/Div ~40mv/Div（TEV）； ● Trigger mode: Auto, single; ● PC connection interface: USB connection; ● Charging mode: special charger; ● Data storage: support SD card and USB storage; ● Operation time: each set can be used for 4 to 5 hours after full charging; ● Operating temperature: - 10-45 ℃; ● Working humidity: 0-90% RH, no condensation; ● Center frequency of sensor: 40KHz; ● Size: main engine 245 * 132 * 45 mm; Paraboloid diameter: 275mm; ● Weight: 1kg (host) 0.5kg (sensor); Overall dimension: 48 * 26 * 33; |
| Technical features |
| ● Take dbmv as the unit, and use transient earth voltage (TEV) to detect the magnitude of partial discharge; ● Color LCD screen is adopted to make the display effect more intuitive and friendly; ● Earphone monitoring mode is added. In ultrasonic mode, real-time monitoring of partial discharge signal can be realized through earphone; ● Automatic storage of test data, which is conducive to the review of test records and subsequent analysis of test data; ● Easy to use, small size, light weight and easy to carry; ● Safe and advanced, good helper for condition based maintenance; |
Feidian electric energy provides more professional testing equipment and technical services for power transformer, transformer, switch, high-voltage cable, power capacitor, bushing, insulator, lightning arrester, motor and other manufacturers
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Address：Lingang section of Shanghai Pilot Free Trade Zone
Tel：13761804576
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