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Product — Partial discharge inspection instrument - live detection method — ZPD-902B Integrated partial discharge inspection instrument
Product name：ZPD-902B Integrated partial discharge inspection instrument
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, UHF sensor, HFCT sensor, ultrasonic sensor, TEV sensor and charger
| Purpose & brief description |
| ● ZPD-902B integrated partial discharge inspection instrument is applicable to partial discharge live inspection of transformer, GIS, switchgear, cable, lightning arrester, transformer and other high-voltage electrical equipment; ● ZPD-902B integrated partial discharge inspection instrument is composed of 2-channel handheld inspection tester host, partial discharge inspection software, high frequency current sensor, ultrasonic sensor, UHF sensor, TEV sensor, calibration pulse generator and test cable; ● t has camera photographing and scanning functions; ● The host power line of the patrol tester can not be connected, and the built-in battery can work normally for no less than 4 hours; When the host battery is out of power and cannot work normally, the host power supply of the patrol tester can be connected to the power socket (AC220V / 50Hz) for charging; ● 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; ● The utility model has the advantages of convenient use, small volume, light weight, complete testing functions and portability; |
| 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 intensity; Therefore, the function of local discharge test can detect the potential insulation hazards of power equipment; |
| Technical parameter |
| ● Main engine technical parameters: Measurement channel: 2 independent measurement channels Sampling rate: 1.8mhz per channel Nonlinear error of this range: ≤± 5% Charging power supply: AC220V ± 10%; Frequency 50Hz; Power ＜ 50W Built in rechargeable battery: continuous operation for more than 4 hours ● technical parameters of sensor: (1) UHF sensor Detection frequency band: 300MHz ~ 1.5GHz Signal transmission mode: 50 Ω coaxial cable Detection sensitivity: 1dB Gain: ＞ 65dbm (2) Ultrasonic sensor Detection frequency band: 20kHz ~ 180khz Signal transmission mode: 50 Ω coaxial cable Effective sensitivity: 1dB (3) High frequency current transformer Detection frequency band: 10kHz ~ 30MHz Signal transmission mode: 50 Ω coaxial cable Detection sensitivity: 1dB (4) TEV sensor Measurement signal: transient ground voltage signal Signal transmission mode: 50 Ω coaxial cable TEV measurement frequency band: 3mhz-100mhz Detection sensitivity: 1dB ● charging mode: special charger; ● data transmission: support SD card, USB and wireless transmission; ● working temperature: - 10-45 ℃; ● working humidity: 0-90% RH, no condensation; ● size: host 245 * 132 * 45 mm; Paraboloid diameter: 275mm; ● Weight: 1kg (host) 0.5kg (sensor); Overall dimension: 48 * 26 * 33; |
| Technical features |
| ● strong anti-interference ability and accurate detection data ● the sensor with high sensitivity can sensitively reflect the partial discharge state inside the equipment (1) Wide band partial discharge UHF sensor is adopted, and the detection frequency band can cover 300mhz-1.5ghz (optional for any frequency band), which can effectively collect partial discharge signals inside GIS equipment; (2) The ultrasonic sensor adopts the most advanced technology at present. It can detect weak discharge signal and ensure that it can effectively detect the partial discharge signal inside the high-voltage equipment; (3) The contact part between the composite TEV sensor and the switchgear is made of Teflon with good dielectric constant, with built-in receiving electrode to form capacitance with the switchgear wall, which can couple the discharge signal in the cabinet to the sensor for signal processing to ensure that the partial discharge signal in the switchgear can be effectively detected; (4) High frequency current transformer adopts active zero flux design principle, which can not only meet the acquisition of ma current signal, but also has strong anti-interference ability; (5) The partial discharge location detector can detect the partial discharge signal of high-voltage cable through the combined sensor, and has high-frequency electric field and ultrasonic detection methods. The sensor is connected with the host by coaxial cable, which effectively avoids the impact of various electromagnetic interference on the detection data on site; At the same time, ensure personal safety; ● simple and convenient installation (1) The self adsorption ultrasonic sensor can be directly adsorbed on the outer wall of high-pressure equipment, and the operation is simple and safe; The high frequency current transformer is of circular or rectangular open design, which is easy to be clamped on different grounding wires; (2) The partial discharge positioning detector can be operated simply and conveniently. During detection, there is no wiring between the detector and the tested object, and the tested object does not need power failure. The cable partial discharge signal can be detected by non-contact method; ● simple and convenient connection Multiple connection modes can be selected for the system, and BNC and SMA interfaces can be selected between the sensor and the host for ease of use (BNC interface mode is selected by default); ● The device has built-in high-capacity lithium battery, which can last for a long time The device has two power supply modes: battery and external power supply. Using battery power supply can easily detect high-voltage equipment in a wide range, and the continuous working time of battery shall not be less than 4 hours; If it needs to be used continuously for a long time, it only needs to provide AC220V ± 10% AC power supply; |
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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