Portable on-Line Partial Discharge tester for GIS
I. Product overview
this type partial discharge detector is one on-line pd tester,it supports four means of partial discharge (PD) detection: Acoustic emission (AE) PD detection, Ultra-high Frequency (UHF) PD detection, High Frequency (HF) PD detection and Transient Earth Voltage (TEV) PD detection. Any combination of the four methods can be configured on one detector.
The system adopts Windows CE6.0 operating platform, and provides various means of display, such as line, ellipse, sine, flight, 2D, 3D, Φ-P/N, Φ-P-N-D, statistics, trend, discharge analysis, and noise elimination. Static or dynamic measurement, observation and analysis of PD pulses in single or multiple cycles of test voltages can be performed. Most of the control parameters are set digitally. The system is of small size and light weight, has strong anti-interference ability, is convenient use, and has stable performance and good measurement accuracy. It is widely used in on-line surveying and localization of PD in transformers, GIS, SF6 tank circuit breakers, switchgear cabinets, and cable terminals of various voltage levels. The system can effectively find insulation defects, which makes it an ideal tool for on-line surveying of power installations
II.Technical parameters
1 .Contact AE PD detection
Detection frequency band: 10kHz~300kHz;
Detection sensitivity: ≤10pC;
Linearity error: ≤±10%;
Stability error: ≤±5%;
Dynamic range: ≥60dB;
Gain: 0~60dB;
Signal acquisition: 16bit, 10MS/s;
Measurement range: 0~80dB;
2. Non-contact AE PD detection
Detection frequency band: 10kHz~300kHz;
Center frequency: 40kHz;
Detection sensitivity: ≤10pC;
Linearity error: ≤±10%;
Stability error: ≤±5%;
Dynamic range: ≥60dB;
Gain: 0~60dB;
Signal acquisition: 16bit, 10MS/s;
3 .UHF PD detection
Working frequency band: 300M~1500MHz;
Detection sensitivity: ≤0.1pC;
Average effective height: ≥11mm;
Stability error: ≤±5%;
Dynamic range: ≥60dB;
Signal acquisition: 16bit, 250MS/s;
4 HF PD detection
Detection frequency band: 3MHz~30MHz;
Detection sensitivity: ≤5pC;
Transmission impedance: ≥5mV/mA;
Linearity error: ≤±3%;
Stability error: ≤±5%;
Dynamic range: ≥60dB;
Gain: 22dB~72dB;
Signal acquisition: 16bit, 250MS/s;
5 Transient ground voltage PD detection
Working frequency band: 3M~100MHz;
Gain: 0~60dB;
Minimum discharge capacity: ≤10pC;
Pulse counting error: ≤5%;
Positioning accuracy: 30cm;
Linearity error: ≤±3%; Stability error: ≤±5%;
Dynamic range: ≥60dB;
Signal acquisition: 16bit, 250MS/s;
6 Main unit parameters
Lithium battery pack: 24V/5AH;
Synchronization: external synchronization AC10~380V, with virtual synchronization function; wireless synchronization AC10~380V;
Display interface: true color, viewing area 152×92mm, resolution 800×480;
System platform: WinCE6.0, 1 network port, 1 USB port, support flash drive;
Weight: 236×177×53mm, about 1.5Kg;
Use environment: temperature -10 ~ 55 ºC, humidity RH90% or less.
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