UHV-2000A Partial Discharge Detector
Product Introduction
The UHV-2000A Partial Discharge Detector manufactures is suitable for partial discharge measurement in various high-voltage electrical equipment, representing the advanced level of domestic digital partial discharge detection technology.
Technical Characteristics
Number of channels: Independent 2-channelC
Sample Rate: Up to 10M
Sampling precision: 12bit
Range switching: -40dB，-20dB，0dB，20dB，40dB，60dB total 6 levels
Measurement frequency band: 3dB bandwidth 10kHz～1MHz
Digital filtering: 10kHz～1MHz optional
Segmented programmable filter: Low end frequency：10kHz，20kHz，40kHz，80kHz
Low end frequency：10kHz，20kHz，40kHz，80kHz
Nonlinear error of this range: 10%
Measuring range: 0.1pC~100,000pC
Sensitivity: 0.1pC
The capacitance range of the testable product: 6pF～250µF
Test power frequency range: 50～500Hz
Display: 12”TFT true color touch LCD display screen
Resolution: 1024 × 768
Antarmuka
USB: 3 channels, capable of external mouse and keyboard, as well as external mobile storage devices
Power Mode: AC 220V；frequency 50Hz；Power 300W
Electrical signal interface: 2-channel BNC interface for signal input
Optical signal interface: 2 channels, used for signal input
Network interface: 1 channel
Grounding button External grounding
General Instructions
CPU: dominant frequency 1.60GHz
Memory: 2.0GB
Hard disk: 128GB Solid state drive
System: Windows Xp
Work environment: ambient temperature:-10-45℃
relative humidity:≤95%
Size: L×W×H:474mm × 288mm × 370mm
Net weight:15.8kg
Product Characteristics
1. The partial discharge detection system supplier is a 2-channel, desktop, TFT LCD display, which is reliable and has a low failure rate.
2. Truly achieved the integration of partial discharge measurement, positioning, and online monitoring functions.
3. The Partial discharge test system factory adopts modern electronic and computer integrated technology to achieve signal amplification (analog, electronic, digital), filtering, data acquisition, data processing, graphic display, and automatic generation of test reports, thereby completing partial discharge measurement and fault diagnosis.
Product functions
1. Detection: Capture PD signals sensitively and reliably.
2. Interference suppression: Hardware filtering (bandpass, high pass, low-pass), digital signal processing (DSP) algorithms (such as wavelet transform, digital filtering), and other methods are used to suppress background noise and interference.
3. Feature extraction: Calculate basic parameters such as the amplitude (intensity), phase (position relative to the power frequency voltage), and repetition rate (number of discharges per second) of the discharge.
4. Pattern recognition: Based on the phase distribution map (φ - q-n) of discharge, pulse waveform, statistical features, etc., use expert systems, neural networks, support vector machines and other methods to identify discharge types (such as internal discharge, surface discharge, corona discharge, floating potential discharge).
5. Severity assessment: Based on the discharge capacity (pC), discharge energy, development trend, etc., evaluate the degree of harm of discharge to equipment insulation.
6. Localization: Using time differences (such as UHF, ultrasound), signal strength (such as TEV scanning), or multiple methods of fusion, determine the specific location of the PD source inside the device.
7. Alarm and Diagnosis: Based on preset thresholds or intelligent analysis results, trigger alarms and provide diagnostic reports.
8. Data management and trend analysis: Store historical data, draw discharge parameter trend charts, and evaluate insulation state changes.
Application scenarios
Factory test and acceptance test: Ensure the insulation quality of new equipment.
Handover test: Inspection before equipment installation and operation.
Preventive testing: Regular offline testing.
Online monitoring: Continuous or periodic real-time monitoring of important equipment such as large transformers, GIS, and high-voltage cables.
Fault diagnosis: Find the cause when the equipment is abnormal.
Verification after maintenance: Confirm whether the defects have been eliminated after maintenance.
