XD51 Pulse Current PD Detector - PD Detecting Detector - Hangzhou Xihu Electronic Institute

Complying Standards:

• GB/T* 7354-2003 Partial discharge measurements (IEC60270:2000 IDT).

• DL/T** 846.4-2004 General technical specifications for high voltage equipment, part 4: partial discharge detector.

• DL/T 417-2006 Guide for partial discharge measuring of power equipment.

• *GB/T stands for “National recommended standards of China”.

• **DL/T stands for “Recommended standards of electric power industry of China”.

Features:

• Class-leading sensitivity:Sensitivity equal to or better than 0.1pC.

• Robust to interference:Complete suite of interference reducing technologies: Frequency-spectrum analysis, frequency-selective filtering, interference separation, and comprehensive shielding. Various choices of analog narrow-band/wide-band filtering within the testing frequency band.By combining spectrum analysis and frequency-selective filtering, interference of fixed/mixed frequencies can be reduced by 90%/60% or more, respectively.

• Handy tools to suppress interference and amplify signals on time domain: Selecting windowing, Masking windowing, and threshold gauging.

•  Ultra-low-noise circuits:Combining proprietary circuit design and noise reduction technologies to achieve a circuit background noise level of lower than 0.05pC.
•  Real-time multichannel testing:Supports multichannel synchronized testing; Up to 12 channels can be used together.
•  Phase synchronization:Automatically synchronize the sampled data with the phase information from the testing power supply.Supports phase discrimination and phase indication.
•  Diagnosis and analysis:Full range of analysis assisting graphical interfaces: elliptical, rectilinear, PRPD, PRPS, and frequency spectrum graph.Relevant parameters, such as quantity of apparent charge, phase, discharge count, and discharge inception/extinction voltage, can be extracted to aid the analysis.Built-in interference and discharge patterns for automated signal classification.
•  Results playback:Any data or graphs, and related parameters can be saved then later be replayed for analyzing or training purpose.
•  Advanced input impedance:The system comes with a set of testing input impedance units (12 levels) to fit most use cases, where the high-current units (level 7 and above) have 10 times higher sensitivity than the common MODEL 5 system.
•  Pulse calibration:The system comes with calibrators capable of generating calibration pulses ranged from 2 to 50,000pC, to support test subjects with different level of capacitance.An innovatively designed rod calibrator can help injecting pulses to high positions such as main transformer bushings.
•  Designed for field use:The testing unit is compact in size and lightweight, with a display that is readable even under direct sunlight.
Technical Specifications:

• Sensitivity: ≤0.1pC;

• Linearity: ≤±3%;

• Sampling rate: 65MS/s;

• Linearity across amp. levels: ≤±3%;

• Sampling resolution: 12Bit;

• Pulse resolution time: 1μs;

• Measuring frequency band: Lower limit: 10 ~ 80kHz; Upper limit: 100 ~ 1000kHz;

• Measuring impedance: 6pF ~ 250μF;

• Gain: -20 ~ 40dB;

• Calibrator: Range: 2 ~ 50000pC; Rising edge: < 60ns; Falling edge: > 100μs;

• Synchronization: Mode: wired or wireless; Frequency: 30 ~ 300Hz; Voltage:AC10 ~ 220V;

Accuracy: 0.01°; Wireless range: ≥75m(82yd).

Product Models:

Table SEQ Table \* ARABIC 1 XD51 Pulse Current PD Detector Model Table

Model	Name	Channels	Description
XD51**	PD Detector	2 ~ 12	All-in-one unit
XD51**F	PD Detector	2 ~ 12	Split units
XD51**A	PD Detector	6 ~ 12	With ultrasonic localization
XD51**D	DC PD Detector	2 ~ 6	For DC partial discharge
XD51**W	PD Detector	2 ~ 12	Enhanced for field use

Table SEQ Table \* ARABIC 2 XD51 Series Calibrator Model Table

Model	Name	Range (upper limit)	Application
XD51J01	Calibrator type 1	500pC	Normal test subjects
XD51J02	Calibrator type 2	50000pC	Test subjects with large capacitance