Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of partial discharge analyzer in China. If you're going to wholesale durable partial discharge analyzer, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
The NRJF210 Partial Discharge Analyzer integrates analog and digital signal processing for PD detection and diagnostics. The system provides programmable hardware filtering, 6 switchable gain stages, and multiple interference suppression methods (static, dynamic, background, antenna gating, polarity discrimination). It includes time-domain waveform display, 2D/3D trend analysis (Q-φ, N-φ, PRPD), and FFT spectrum analysis. The instrument operates on an embedded Windows XP platform with a 12-inch TFT touchscreen.
Product Parameters
|
Parameter |
Specification |
|
Number of interfaces |
Free-running 4 interfaces |
|
Sampling rate |
1M, 5M, 10M selected |
|
Sampling accuracy |
12bit |
|
Range changing |
-40dB, -20dB, 0dB, 20dB, 40dB, 60dB, totally 6 types |
|
Measurement frequency range |
3dB bandwidth 10kHz – 1MHz |
|
Digital filtering |
10kHz – 1MHz freely selected |
|
Program controlled filter subsection |
Low frequency: 10kHz, 20kHz, 40kHz, 80kHz; High frequency: 100kHz, 200kHz, 300kHz, 400kHz |
|
Nonlinear error in the range |
10% |
|
Measurement range |
0.1pC – 100,000pC |
|
Sensibility |
0.1pC |
|
Capacity range of the measured product |
6pF – 250µF |
|
Frequency range of test power |
50 – 500Hz |
|
Display screen |
12" TFT true color touchable LCD screen |
|
Resolution |
1024×768 |
|
USB |
3 types, use of external mouse, keyboard or other USB devices |
|
Power mode |
AC 220V; Frequency 50Hz; Power 300W |
|
Electric signal interface |
4 BNC interfaces, use of signal input |
|
Optical signal interface |
4 types, use of signal input |
|
Network interface |
1 type |
|
Landing button |
External landing |
|
CPU |
Basic frequency 1.60GHz |
|
RAM |
2.0GB |
|
Hard disk |
128GB SSD |
|
System |
Windows XP |
|
Operating environment |
Ambient: -10℃ to 45℃; Humidity: ≤95% RH |
|
Size (L × W × H) |
474mm × 288mm × 370mm |
|
Weight |
15.8kg |
Key Advantages
- Wide Dynamic Range: 6 gain stages from -40dB to 60dB enable measurement from 0.1pC to 100,000pC. An over-range indicator ("★") alerts when signal exceeds the current range.
- Flexible Filtering: Hardware bandpass filter with 16 low/high frequency combinations (low: 10/20/40/80kHz; high: 100/200/300/400kHz), plus arbitrary digital filtering from 10kHz to 1MHz.
- Multi-Mode Interference Suppression: Provides static, dynamic, background, antenna gating, and polarity discrimination methods. Polarity discrimination uses differential current polarity between bushing ground and core ground to distinguish internal PD from external interference.
- Comprehensive Analysis: 2D (Q-φ, N-φ, PRPD) and 3D trend analysis, plus FFT spectrum analysis for discharge characterization. Supports phase windowing (up to 2 windows per channel) to exclude interference from specific phase angles.
Main Applications
• On-site partial discharge measurement for power transformers (oil-immersed and dry-type), GIS, power cables, and instrument transformers (CT/VT).
• Fault location in high-voltage equipment (optional).
• Continuous online PD monitoring for large power transformers (optional).
Related Products
Factory Show
FAQ
Q1: What is the minimum detectable discharge level?
A1: The minimum sensitivity is 0.1pC under standard test conditions, as specified in the technical parameters.
Q2: What types of input signals does the NRJF210 support?
A2: The NRJF210 Partial Discharge Analyzer supports three input types per channel: BNC (electrical signal), optical fiber, and straight-through. Optional accessories include ultrasonic sensors (CS-II, 20-300kHz) and RLC-type input units.
Q3: Is calibration required before each test?
A3: Yes, the instrument must be calibrated after each wiring setup using an external calibration pulse generator. The calibration value (pC) must match the generator setting. Calibration is software-guided and must be repeated if the filter band is changed.
Q4: How long does delivery take?
A4: Express: 5–7 days; Air: 7–12 days; Sea: 25–40 days.
Q5: How about quality control?
A5: 100% inspection before packing.
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