MEWOI-M9002 Cheap handheld Ultrasonic Partial discharge patrol detector,with GIS,TEV Sensor
MEWOI-M9002 Cheap handheld Ultrasonic Partial discharge patrol detector,with GIS,TEV Sensor

MEWOI-M9002 Cheap handheld Ultrasonic Partial discharge patrol detector,with GIS,TEV Sensor

Partial discharge patrol detector

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MEWOI-M9002 Handheld Ultrasonic Partial discharge patrol detector,with GIS(GasInsulatedSwitchgear),TEV Sensor（transient earth voltage detection）

MEWOI OEM/ODM Instruments Manufacturer

MEWOI OEM/ODM Instruments Manufacturer

INTRODUCTION

When partial discharge occurs, physical phenomena such as ultrasonic, thermal, optical, magnetic, etc. will be generated, in which ultrasonic will spread to the surrounding in the form of spherical wave with the sound source as the center. The partial discharge patrol locator judges the existence and location of partial discharge by receiving the ultrasonic signal generated by the partial discharge, and quickly diagnoses the partial discharge condition in combination with the real-time displayed images and data. MEWOI-M9002 locator integrates two detection methods: transient ground voltage and ultrasonic.

MAIN FEATURES

  • The ultrasound and TEV partial discharge waveforms are on the same interface as the yellow, green, and red warning values, which is the first in China.

  • In dBmV, transient earth voltage (TEV) and ultrasonic wave are used to detect the size of partial discharge;

  • Adopting a color LCD screen, the display effect is more intuitive and friendly;

  • Add earphone monitoring method, which can achieve real-time monitoring of partial discharge signals through earphones in ultrasonic mode;

  • The display can display waveforms at all times and store valuable waveforms. Test data is automatically stored, which is conducive to reviewing test records and subsequent analysis of test data;

  •  Large signal amplification factor and high sensitivity; Signal reception range: effective distance 15m;

  • Moderate intensity red laser alignment, strong focusing ability, accurate positioning, safe and reliable, simple and practical;

  • Identify and locate the discharge of insulators on the iron tower, as well as the creepage of outdoor cable heads;

  • Mainly to detect partial discharge of high-voltage switchgear;

  • Convenient to use, small in size, light in weight, and easy to carry.

MAIN FEATURES

  • 5-inch high brightness LCD display, resolution: 800 × 480

  • Portable, rugged, lightweight, suitable for use in harsh environments

  • Measurement, statistics and analysis of repetitive discharge times of

  • Save experimental data and waveforms at any time and redisplay them

  • Under the condition of no power outage, carry out operation state detection and evaluation

  • Determine the position of discharge point

TECHNICAL SPECIFICATION

TEV Sensor
Sensor: capacitive;
Measurement range: 
-5-60dB, in steps of 1dB;
Resolution: 
1dB.
Ultrasonic Sensor

Measurement range: 

-11dB~68 dB, in steps of 1dB;
Resolution: 
1dB;
Sensor center frequency: 
40kHz ± 1kHz;
Sensor diameter: 
16mm.
Instrument hardware instruction
Display: Color backlit LCD;
Display resolution:320X240;
Lateral sensitivity:50us/Div~2m s/Div;
Vertical sensitivity: 4UV/Div~400UV/Div (ultrasonic);400uv/Div ~40mv/Div（TEV）；
Trigger mode: AUTO; NORM； SIGN；
Charging method: dedicated charger;
Data storage: dedicated SD card storage;
Operation time:Each set can be used for 4-5 hours after fully charging;
Controller:Thin film keyboard;
Connector: 2.1mm low-voltage DC charger input;
headphone socket;3.5mm stereo headphone socket;
ultrasonic sensor input;External ultrasonic sensor input;
TEV sensor input;External TEV sensor input;
Earphones: Earphones: minimum 8 ohms.
Working environment

Working temperature: -10~45 ℃;
Humidity: 
0-90% RH without condensation;
Packing Details

Size: 

Host 245 * 132 * 45 mm; Parabolic diameter: 275mm;
Weight: 
0.7kg (host) 0.25kg (sensor);
Battery Charger
Rated voltage: 90~264V AC;
Frequency: 
47-63Hz;
Charging voltage: 
12V DC;
Charging current: 
500 mA;
Time required for complete charging: 
5 hours.
Ultrasonic Concentrator
Sensor center frequency: 40 kHz;
Sensor diameter: 
16mm;
Outer diameter of parabolic reflector: 
275mm;
 Standard diameter of parabolic reflector: 
250mm;
Weight: 
0.6 kg;
Working temperature: 
-10-50 ℃;
Humidity: 
0-90% relative humidity, without condensation.

Test method of sensor 

Ultrasonic AE Sensor

TEV transient-to-earth wave TEV sensor

SELECTION GUIDE

Model No.Display
SensorsApplication Area

MEWOI OEM/ODM Instruments Manufacturer

MEWOI-M9002(cheap)

320*240 LCD2sensors: Ultrasonic+TEVSwitchgear and Ring Main Unit

MEWOI OEM/ODM Instruments Manufacturer

MEWOI-M9002C

800*480,5inches6sensors:Ultrasonic(GIS:2pcs)+TEV+Ultrasonic concentrator+High frequency Current sensor+Ultra-high frequency sensorSwitchgear, Ring Main Unit,Transformers, GIS, cables, generators, reactors

MEWOI OEM/ODM Instruments Manufacturer

MEWOI-M9003F

800*480,7.3inches
6sensors:Ultrasonic(GIS:2pcs)+TEV+Ultrasonic concentrator+High frequency Current sensor+Ultra-high frequency sensorSwitchgear, Ring Main Unit,Transformers, GIS, cables, generators, reactors



label: Ultrasonic Partial discharge patrol detector
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