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HVJF-C Ultrasonic Partial Discharge Tester 6pF~250µF Capacitance Rang

China Wuhan Rising Electric Co., Ltd. certification
China Wuhan Rising Electric Co., Ltd. certification
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HVJF-C Ultrasonic Partial Discharge Tester 6pF~250µF Capacitance Rang

HVJF-C Ultrasonic Partial Discharge Tester 6pF~250µF Capacitance Rang
HVJF-C Ultrasonic Partial Discharge Tester 6pF~250µF Capacitance Rang

Large Image :  HVJF-C Ultrasonic Partial Discharge Tester 6pF~250µF Capacitance Rang

Product Details:

Place of Origin: China
Brand Name: RISING
Certification: ISO CE
Model Number: HVJF-C

Payment & Shipping Terms:

Minimum Order Quantity: 1 SET
Packaging Details: Wooden package
Payment Terms: L/C, L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 500 SET PER Month
Detailed Product Description
Capacitance Rang: 6pF~250µF Sensitivity: 0.1mV
Power Supply: AC 220V Work Temperature: -20℃~50℃
Dimension: L249mm × W216mm × H167mm Weight: 4.7kg
Humidity: <90%
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partial discharge tester

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partial discharge test system

 

HVJF-C Ultrasonic Partial Discharge Tester 6pF~250µF Capacitance Rang

 

Product Description 

Before partial discharge, the electric field force, mechanical stress and particle force around the discharge point are in relative equilibrium. When partial discharge occurs, the rapid release or migration of the charge changes the electric field, breaks the equilibrium state, and causes the surrounding particles to oscillate mechanically, thus producing sound or vibration signals, as shown in FIG. 4-1. The ultrasonic method measures partial discharge signals by installing ultrasonic sensors on the external wall of the equipment chamber. The characteristic of this method is that the sensor has no connection with the electrical circuit of the geographical equipment, and is not disturbed by the electrical equipment, but is easily affected by the ambient noise or the mechanical vibration of the equipment when used in the field. Due to the large attenuation of ultrasonic signals in the insulation materials commonly used in power equipment, the detection range of ultrasonic detection method is limited, but it has the advantage of high positioning accuracy. The spectrum of sound waves produced by partial discharges is very wide, ranging from tens of Hz to a few MHz. Signals with frequencies below 20kHz can be heard by the human ear, while ultrasonic signals above this frequency must be picked up by ultrasonic sensors. By measuring the sound pressure of ultrasonic signal, the discharge intensity can be estimated. In addition, the ultrasonic method can also detect different types of faults, such as suspension, tip, along the surface, etc., online detection does not affect the normal operation of equipment, has a high sensitivity, good anti-electromagnetic interference ability and has the advantages of high positioning accuracy.

 

Technical Parameters
Number of channels 2 electrical signals and 1 external synchronization interface
Sampling rate 10M
Sampling precision 12bit
Range changing 60dB,40dB,20dB,0dB,-20dB共5档
Nonlinear error of range 5%
Synchronization mode Inter sync,external sync, wireless sync
Wireless ultrasonic amplification ×200
Ultrasonic detection frequency range 20k—120kHz
Sensitivity 0.1mV
Display  
Screen 7” TFT true color touch LCD display
Resolution 800×480
Storage  
Physical storage 256MB DDR2,the running memory
SD card storage Standard with 4G card, can be upgraded to 32G, used to storage test records and test data
Interface  
RS232 Used for synchronous transport interface with PC
USB External mouse and keyboard and mobile storage devices
Power supply Battery power (16.8v lithium battery) + external power supply (18V) can provide continuous power supply for 6 hours
Electrical interface 2 - way BNC interface for signal input
SMA interface external synchronization interface
SD card slot can plug in an SD card that supports up to 32 gigabytes
Internet access scalable
Ground connection External grounding
Universal  
CPU Dominant frequency 533MHz
System WINCE6.0
Work temperature -20℃~50℃
Storage temperature -20℃~60℃
Humidity <90%
Dimension L249mm × W216mm × H167mm
Weight 4.7kg

Contact Details
Wuhan Rising Electric Co., Ltd.

Contact Person: Jason

Tel: +8613036102793

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