ZSJF-9000D High Voltage Switchgear Partial Discharge Tester Manufacturer
Functional Features
1. Uses ultrasonic and transient earth voltage (TEV) to detect the magnitude of partial discharge in high voltage switchgear, with units in dBmV. Combines contact measurement and non-contact measurement (handheld ultrasonic receiving antenna) to enable qualitative, quantitative, and location analysis.
2. Easy to use, compact, and lightweight, making it portable.
3. No power outage required during testing.
4. Color LCD screen provides a more user-friendly and intuitive display.
5. Two measurement sensors: ultrasonic and TEV sensors can verify and complement each other. Different discharge modes in high voltage switchgear may be better detected by either ultrasonic or TEV sensors.
6. Use the TEV contact measurement mode to measure and record data for each switchgear cabinet. For cabinets with discharge, store data, waveforms, and generate reports, thereby locating, quantifying, and qualifying the partial discharge points emitting TEV signals.
7. Then connect the handheld antenna to the main unit and perform non-contact ultrasonic scanning of the entire switchgear. After locating the discharge points, use the ultrasonic contact measurement mode to obtain data and waveforms for storage. This allows for locating, quantifying, and qualifying the partial discharge points emitting ultrasonic signals. It is simple to use and more efficient than similar foreign products.
8. The yellow, green, and red three-level warning values, along with ultrasonic and TEV waveforms, are displayed on the same screen for convenience and intuitiveness. TEV is measured directly on the cabinet body, eliminating the need to compare with background values on the grounding iron plate, making it more advanced than similar domestic and international equipment.
Technical Specifications
1. TEV Performance Parameters
Sensor: Capacitive;
Measurement Range: -5 to 60 dB, in 1 dB steps;
Resolution: 1 dB.
2. Ultrasonic Measurement Parameters
Measurement Range: -11 dB to 68 dB, in 1 dB steps;
Resolution: 1 dB;
Sensor Center Frequency: 40 kHz ± 1 kHz;
Sensor Diameter: 16 mm.
3. Instrument Hardware Specifications
Display: Color backlit LCD;
Display Resolution: 320X240;
Horizontal Sensitivity: 50 us/Div to 2 ms/Div;
Vertical Sensitivity: 4 uV/Div to 400 uV/Div (Ultrasonic);
400 uV/Div to 40 mV/Div (TEV);
Trigger Modes: Auto, Norm, Sign;
PC Connection Interface: USB connection;
Charging Method: Dedicated charger;
Data Storage: Supports SD card storage;
Operating Time: 4 to 5 hours per set after full charge;
Controller: Membrane keyboard;
Connectors: 2.1mm low voltage DC charger input;
3.5mm stereo headphone jack;
External ultrasonic sensor input;
Headphones: Minimum 8 ohms.
4. Operating Environment
Operating Temperature: -10 to 45 °C;
Humidity: 0 - 90% RH, non-condensing;
5. Dimensions
Dimensions: Main unit 245*132*45 mm; Parabolic reflector diameter: 275 mm;
Weight: 1 kg (main unit), 0.5 kg (sensor);
6. Battery Charger
Rated Voltage: 90 ~ 264V AC;
Frequency: 47 - 63 Hz;
Charging Voltage: 12V DC;
Charging Current: 500 mA;
Full Charge Time: 5 hours.
7. External Parabolic Ultrasonic Sensor Parameters
Sensor Center Frequency: 40 kHz;
Sensor Diameter: 16 mm;
Parabolic Reflector Outer Diameter: 275 mm;
Parabolic Reflector Standard Diameter: 250 mm;
Weight: 0.6 kg;
Operating Temperature: -10 to 50 °C;
Humidity: 0 - 90% relative humidity, non-condensing.
