Partial Discharge Cable Testing

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Partial Discharge Cable Testing
Details
Peak voltage ≥60kV, partial discharge location accuracy 1%, non-destructive testing of 10kV-220kV cables, precise defect location + simultaneous assessment of insulation aging.
Category
Oscillatory Wave Partial Discharge Tester
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Description

MOEORW- WOHT35 Partial Discharge cable testing

MOEORW-WOHT35 Partial Discharge cable testing

Peak voltage ≥60kV, partial discharge location accuracy 1%, non-destructive testing of 10kV-220kV cables, precise defect location + simultaneous assessment of insulation aging.

Weighing only 85kg and charging in under 8 seconds, this unit can measure up to 5km of cable, making it easy to transport by vehicle. Its low power consumption adapts to various field conditions, meeting all needs for handover, pre-testing, and condition diagnostics.

 

Product Introduction

 

The MOEORW- WOHT35 PD cable testing equipment is primarily used for testing 35 kV cable systems. The MOEORW- WOHT35 Pd Cable Testing generates a peak oscillation voltage of up to 60 kV and an effective value of up to 42.4 kV at the test site . The device is compact and lightweight, allowing it to be transported to any testing location in a standard vehicle . Depending on the cable being tested , this device can test cables up to several kilometers long .

The following reliable testing can be provided.

●Installation malfunction

● Defects caused by improper cable laying

● Defects in cable fittings

Changes in cable material due to aging

Far beyond a simple " pass " or " fail " test, oscillating power supply testing is an advanced maintenance tool that not only provides asset management but also helps the power grid operate better .

 

Product Parameter (specification)

 

Technical indicators

MOEORW- WOHT35​

Low-damping oscillating power supply

Peak voltage ≥ 60 kV, RMS voltage ≥ 42.4 kV, Oscillation current ≥ 100 A

Charging time

Less than 8 s

Types of electronic switches

IGBT

Charging current

10mA

Test voltage frequency

20Hz~800Hz

Cable capacitor

0.05μF-4μF

Partial discharge level test range

1pC-200nC

Partial discharge location bandwidth

Automatic bandwidth selection from 150kHz to 50MHz

Local positioning accuracy

1% of cable length

Longest test length

5km

tanδ test of dielectric loss angle

0.1%~10%

Total weight of the instrument

85 kg

Calibrator​

Gear settings: 1pC-200nC

Rise time: no more than 30ns

Pulse amplitude accuracy: 2%/5%

Pulse frequency: 100Hz/200Hz

Calibration capacitor: 100pF/1nF

Power supply: 4 x 1.5V batteries

Instrument weight: 600g

 

Product feature and application

 

 Advanced testing: It adopts oscillating wave partial discharge detection and location technology to conduct non-destructive testing on 10kV-220kV cables. It can accurately locate defects and assess insulation aging, and the amount of information is far greater than that of traditional pressure testing.

 Highly adaptable: Primarily designed for 35kV cable testing, with a peak oscillation wave of up to 60kV, capable of testing cables several kilometers long, with capacitance compatibility of 0.05μF-4μF;

 Excellent accuracy: Partial discharge test range 1pC-200nC, positioning accuracy of 1% of cable length, dielectric loss angle tanδ test 0.1%~10%, bandwidth can be automatically selected;

 High efficiency and convenience: charging time < 8s, low power consumption, small size, total weight only 85kg, can be transported by vehicle to any site;

 Comprehensive functions: Suitable for cable handover, pre-testing and operational status diagnosis, it can detect various defects such as installation, wiring, accessories, and aging, and help power grid asset management.

 

Prodection details

 

● Used for handover testing of power cables: to identify potential hazards during cable transportation or installation, and to ensure the safe and reliable operation of the line.

● Pre-testing for power cables: to confirm the quality of cable terminations and intermediate joints after maintenance and installation .

● Condition diagnosis of operating cables: By measuring partial discharge and dielectric loss in power cables, the condition of operating cables is estimated, and the insulation condition of cables after long-term operation is determined . This allows for the scientific planning of maintenance , improving the operating efficiency and reliability of cables . It effectively detects and accurately locates various local defects in cables .

 

Company Qualifications

 

 

FAQ

 

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