2 Channel PD Tester Multi-Channel Transformer Partial Discharge Detector
The instrument adopts WINDOWS series operating platform, which can freely select elliptical, linear and sinusoidal display, two-dimensional and three-dimensional graphic analysis methods, spectrum window and QVF three-dimensional characteristic window, and can statically measure the partial discharge pulse of the one-wave test voltage. Observation and analysis. It can perform digital window opening operation, open window at any phase, single window, double window optional, and 360° rotation of ellipse to avoid the influence of interference on measurement. Multi-channel measurement and digital differential technology can flexibly form a pulse polarity discrimination or balance measurement loop to effectively suppress interference pulse signals. Advanced spectrum analysis processing can effectively reduce background interference. Multiple input channels can be used to measure the six partial discharge signals (expandable) of the test sample at one time, which can easily analyze the source of the PD signal. Under the whole Chinese character operation platform, band selection, gain conversion, spectrum analysis, and two-dimensional and three-dimensional graphic display can be conveniently performed. In addition, the system can print or save a single graphic and save the continuous time graphic data for analysis.
The scope, detection method, test circuit and technical performance parameters of the instrument are in full compliance with international standard IEC270, national standard GB7354-2003 "Partial Discharge measurements" and "Power Equipment Partial Discharge Field Measurement Guidelines" DL 417 -91 standard requirements.
1.Capacitance range of measured piece 6pF~250uF
2.Measuring sensitivity and Max. current(see table 1)
No. | Tuning capacitance range | Sensitivity (pC) (Un-balance circuit) | RMS of max. current | |
(Un-balance circuit) | (Balance circuit) | |||
1 | 6pF-25pF-100pF | 0.01pc | 30mA | 0.25A |
2 | 25pF-100pF-400pF | 0.02pc | 60mA | 0.5A |
3 | 100pF-400pF-1500pF | 0.04pc | 120mA | 1A |
4 | 400pF-1500pF-6000pF | 0.08pc | 250mA | 2A |
5 | 1500pF-6000pF-0.025mF | 0.15pc | 0.5A | 4A |
6 | 6000pF-0.025mF-0.10mF | 0.3pc | 1A | 8A |
7 | 0.025mF-0.10mF-0.4mF | 0.5pc | 2A | 15A |
8 | 0.10mF-0.4mF-1.5mF | 1.0pc | 4A | 30A |
9 | 0.4mF-1.5mF-6.0mF | 1.5pc | 8A | 60A |
10 | 1.5mF-6.0mF-25mF | 2.5pc | 15A | 120A |
11 | 4.0mF-15mF-60mF | 5.0pc | 25A | 200A |
12 | 15mF-60mF-250mF | 10pc | 50A | 300A |
Specifications:
ITEM | |
Channel | 2 electrical signal interfaces, one external synchronization interface |
Sampling accuracy | 12bit |
Range switching | 60dB、50dB、40dB、30dB、20dB、10dB、0dB、-10dB共8档 |
Frequency range | 80k-200kHz、40k-300kHz |
Nonlinear error of this range | 5% |
Measuring Range | 0.1pC~100000pC |
Sensitivity | 0.1pC |
Capacitance range | 6pF~250µF |
Testing power supply frequency range | 50~400Hz |
Display | |
Display | 7" TFT Touch screen |
Resolution | 800×480 |
Storage | |
Physical storage | 256MB DDR2 for running memory |
SD card storage | Standard 16G card, can be upgraded to 32G, used to store test records and test data |
Port | |
RS232 | Used for synchronous transmission interface with PC |
USB | External mouse and keyboard, and external mobile storage device |
Power supply | AC 220V |
Electrical signal port | 2-channels BNC interface for signal input |
SMAport | External synchronization interface |
SD card slot | Can insert SD card up to 32G |
Internet access | Extensible |
Grounding Button | Used for grounding |
General instructions | |
CPU | Basic frequency 533MHz |
System | WINCE6.0 |
Environment temperature | -20℃ to 45℃ |
Storage environment temperature | -20℃ to 60℃ |
Volume | 350mm × 245mm × 175mm |
Weight | 5.8kg |














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