RSJFD-IV Partial Discharge Test Equipment ,
Partial Discharge Detection System
Product Introduction
RSJFD system detection method is pulse current method which is currently most widely used in the world, the basic principle is following: when the test object generates one time partial discharge, there is the transient voltage change △U on both terminals of the test object ,then go to the detection impedance Zm via a coupling capacitance Ck, then there will be one pulse current I in the circuit. Sample the pulse voltage generated when this pulse current I passes the detection impedance Zm , amplified and displayed, finally, it can determine the actual loaded discharge, etc. of the partial discharge. The pulse current method mainly uses the lower frequency part of the partial discharge signal frequency spectrum, which can avoid wireless interference.
RSJFD system is a testing system in the form of pulse peak indication, it possesses functions such as computer program-controlled filtering, amplification, sampling, storage and display. It can test the actual loaded discharge q, discharge repetition rate n, average discharge current I, and quadratic rate D, it also can make different atlases: q-n, q-φ, q-φ-t, etc.
Technical Parameters
Measuring channel: 2 channels
Detection sensitivity :0.1 pC
Programmable filter setting step
Low-end 10,20,40 kHz
High-end 100,200,300 kHz
Dynamic range of gain 120dB
Sampling frequency 0.1μs/point per channel
Sampling accuracy 8 bits ±1/2 LSB
Synchronous frequency 50, 100, 150, 200Hz or any other frequency
Standard pulse generator JFD－301
Standard pulse voltage 0.2V, 0.5V, 1V, 2.0V, 5V or 10V, adjustable
Calibrated capacitance 50pF or 200pF, adjustable
Rise time of pulse voltage for calibration ＜60ns
Fall time of pulse voltage for calibration ＞100μs
Working power supply AC220V±10%,50Hz
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RSJFD-IV Partial Discharge Test Equipment , Partial Discharge Detection System Images
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