LWJ 7010 hand-held multi-function partial discharge tester characteristic: 1. LWJ 7010 hand-held multi-function partial discharge tester is mainly applicable to live partial discharge test of transformer, generator, motor, GIS, high-voltage switchgear, high-voltage cable and other primary equipment. It is a powerful weapon for condition-based maintenance with simple operation and strong anti-interference ability. 2. It is equipped with five kinds of sensors, namely, two ultrasonic sensors, one TEV sensor, one HFCT sensor and one UHF sensor, which are powerful and applicable to live partial discharge test of all high-voltage primary equipment. 3. Find and locate partial discharge points for large coil equipment such as large main transformer and reactor. 4. Two channels, displaying waveform, dBmV value and yellow, green and red warning values; There is also a three-dimensional display. 5. High sampling rate and strong anti-interference ability. 6. The waveform can be stored and uploaded to USB flash disk and computer. 7. The five sensors have high accuracy and strong anti-interference ability. Technical indicators 1. Sensor parameters (1) Ultrasonic measurement A. Measuring GIS ultrasonic sensor: sensor center frequency: 40kHz; Measuring range: - 60 dBmV~60 dBmV; Resolution: 1dB; Error: ± 1dB. B. Ultrasonic sensor of measuring transformer: center frequency: 150kHz; Measuring range: - 60dBmV~60dBmV; Resolution: 1dB; Error: ± 1d. (2) Composite TEV measurement Sensor: capacitive; Measuring range: 0 ～ 60dBmV; Resolution: 1dB; Error: ± 1dB; Detection bandwidth: 5 ～ 70MHz. (3) High frequency current transformer Detection frequency band: 10kHz~30MHz; Accuracy: ± 10%; Resolution: 1dB; Signal transmission mode: 50 Ω coaxial cable. (4) UHF sensor Detection frequency band: 300MHz ～ 1.5GHz, signal transmission mode: 50 Ω coaxial cable, detection sensitivity: 1dB, gain:>65dBmV. 2. Host (1) Color screen: display the discharge waveform, three-dimensional stereogram, yellow, green and red warning values, and can display the battery status. (2) Shell: with protective shell, the protection grade shall reach or exceed IP53; (3) Connection: headphone jack, low-voltage DC charger input, external ultrasonic sensor input; (4) Internal battery: equipped with rechargeable battery, with automatic shutdown function when the battery voltage is low; (5) Battery continuous working time: more than 6 hours in single-channel mode and more than 3 hours in multi-channel mode; (6) Battery charging: 220V power frequency power supply can be used for charging, and the charging time is not more than 8 hours; Protection grade of battery charger: IP54; (7) Weight of main engine: no more than 3kg; Size: 26 * 20 * 7 (cm).
characteristic: 1. LWJ 7010 hand-held multi-function partial discharge tester is mainly applicable to live partial discharge test of transformer, generator, motor, GIS, high-voltage switchgear, high-voltage cable and other primary equipment. It is a powerful weapon for condition-based maintenance with simple operation and strong anti-interference ability. 2. It is equipped with five kinds of sensors, namely, two ultrasonic sensors, one TEV sensor, one HFCT sensor and one UHF sensor, which are powerful and applicable to live partial discharge test of all high-voltage primary equipment. 3. Find and locate partial discharge points for large coil equipment such as large main transformer and reactor. 4. Two channels, displaying waveform, dBmV value and yellow, green and red warning values; There is also a three-dimensional display. 5. High sampling rate and strong anti-interference ability. 6. The waveform can be stored and uploaded to USB flash disk and computer. 7. The five sensors have high accuracy and strong anti-interference ability.
