China Testing Instruments Manufacturer,Whatsapp/Wechat:+8618620373879  Email: 464560351@qq.com

MEWOI2400 Overhead Line Ground Fault Inspection Instrument
MEWOI2400 Overhead Line Ground Fault Inspection Instrument
MEWOI2400 Overhead Line Ground Fault Inspection Instrument
MEWOI2400 Overhead Line Ground Fault Inspection Instrument

MEWOI2400 Overhead Line Ground Fault Inspection Instrument

2023-07-21 17:27:51  

It is used for inspection and inspection of single-phase ground faults of overhead high-voltage lines, and accurately locates ground fault points. Accurately find hidden ground faults such as single-phase metallic grounding, arc grounding, transition resistance grounding, porcelain bottle breakdown, and lightning arrester breakdown of overhead lines.

  • Main Features : Output voltage: AC 3000V/8000V Output frequency: 50Hz Wireless communication distance: 50m Bluetooth communication distance: 40m Display: 7-inch color LCD With electric inspection alarm and data upload function
  • Serial No. :


Contact Us for QuotationEmail:464560351@qq.comWhatsapp: +8618620373879

Product introduction

MEWOI2400 overhead line ground fault inspection instrument is a new type of line ground fault inspection device carefully developed by our company. It is suitable for inspecting single-phase ground faults on overhead high-voltage lines not longer than 25 kilometers. Need to stop running. The instrument can accurately find hidden ground faults such as single-phase metallic grounding, arc grounding, transition resistance grounding, porcelain bottle breakdown, and arrester breakdown of overhead lines.

        MEWOI2400 Overhead Line Grounding Fault Inspection Instrument is composed of host, testing clamp, test line, grounding needle, insulating rod and accessories. The host and testing clamp adopt wireless communication. The host adopts a 7-inch color screen, the fault direction is clear, and the test results are clear at a glance. The host has a voice broadcast function, and the voice prompts the direction of the line fault, making the on-site operation easier. The innovative detection clamp integrates signal transmission and collection. The clamp structure is small in size and light in weight. work efficiency. The detection clamp is equipped with a non-contact electroscope, which can check whether the cable is charged, and emits an audible and visual alarm to ensure the safety of operators and equipment. The instrument also has a Bluetooth communication function. After downloading the APP, you can test, view test results, and view historical records on your mobile phone.

      MEWOI2400 Overhead Line Ground Fault Detector can locate multiple lines ground faults. After the overhead line is out of service, start testing section by section from one end of the line, apply low-frequency high-voltage signals to the line by the detection clamp and detect the current on the left and right sides, and display the direction of the ground fault point on the host by analyzing the pulse current and impedance on the left and right sides ( yellow direction or red direction). The detection pliers have corresponding yellow end and red end. Test section by section along the direction indicated by the fault point. Before the fault point, the test result shows that the fault point is behind it; after the fault point, the test result shows that the fault point is in front of it. Thereby, the fault point is approached segment by segment, and the fault location is determined.

MAIN Features

1) The innovative integrated detection clamp integrates signal transmission and collection. The clamp structure makes it easy to mount. The line fault test can be completed in one mount. There is no need to divide the output signal and collect signal into two places, and there is no need to disconnect PT, the test is convenient and fast, reducing the number of operators and improving work efficiency.

2) The detection clamp is equipped with a non-contact electroscope. If the circuit under test is charged, it will send out a light alarm, and at the same time, the host will broadcast voice prompts to ensure the safety of operators and equipment.

3) Especially suitable for faulty lines with cable branches. Strong short-circuit detection ability, can detect direct short-circuit fault with grounding resistance of 0Ω.

4) The output voltage is as high as 8000V, and there are two options of 8000V and 3000V to meet the different needs of users.

5) Large-capacity rechargeable battery, which can complete the inspection work of the entire line after being fully charged.

6) The detection speed is fast, and the test result can be obtained in a few seconds after hooking up.

7) The fault point of the 7-inch color screen is clear and clear.

8) Voice broadcast function, prompting the fault direction.

9) With Bluetooth communication function, the communication distance can reach 40m. After downloading the APP, you can test and view the test results on the mobile phone, and use it as a handheld receiver.

Bluetooth APP test interface

  It has Bluetooth communication that supports the Android system. After scanning the QR code to install the APP program, you can test and view the test results on the mobile phone, which is particularly convenient for on-site use.

Test Principle 

After the overhead line is out of service, the main engine outputs a low-frequency high-voltage signal, and the transmission clamps on the left and right sides of the detection clamp apply AC voltage signals to the line respectively, and the high-sensitivity current transformer in the middle of the detection clamp detects the current amplitude and phase on both sides. The current passes through the host, the detection clamp, flows through the fault line, enters the ground at the ground fault point, and returns to the host through the ground pin.

      The output of the instrument is a high-voltage AC signal, and the distributed capacitance and the fault grounding resistance form an RC parallel circuit. By detecting the voltage and current signals on both sides of the line and the phase between the voltage and the current, it can be judged whether the current load is capacitive or inductive. Compare the magnitude of the purely resistive impedance on the left and right to determine whether the ground fault is on the left or the right. Hang the detection pliers on the line in turn along the line, and the hand-held receiver indicates the direction of the fault point, so as to gradually approach the fault point.

Technical parameter

Function

Overhead Line Ground Fault Finding

power supply

Host: 14.8V 5200mAh lithium battery

Detection clamp: 3.7V 2600mAh lithium battery

test method

Clamp CT

display screen

7-inch color LCD, size 153.8mm×85.6mm

The output voltage

AC  3000V/8000V

Output frequency

50Hz

Jaw size

Φ36mm

Electricity alarm

Check whether the cable under test is live, and send out an audible and visual alarm when it is live

communication method

433MHz wireless communication

Wireless communication distance

50m (in relatively open environment)

Bluetooth communication distance

40m (in relatively open environment)

data upload

The host has a USB interface to upload test data

Meter size

Host: 355mm×272mm×164mm

Detection clamp: 297mm×118mm×94mm

Instrument weight

Host: about 890g

Detection forceps: about 702g

Total weight: about 11.5kg (including insulation rod)

Battery

Display the battery power of the host and the detection clamp

Working temperature and humidity

Temperature: -20℃~70℃, Humidity: 5~90%RH

working height

Altitude<5000m

Insulation rod size

Φ32mm, 1m/section (5 sections)


Telephone
Email
Map
QQ Chat