Overhead Line Fault Location Instrument

Product Introduction

The ME-W3001 Overhead Line Fault Locator is specifically designed for 10kV (compatible with 35kV) low-current grounding systems, enabling precise location of single-phase ground faults. Comprising a signal generator and line-tracking sensors, it employs the "S-injection method" principle to detect high-resistance and concealed faults. Operation requires line de-energization. By injecting differential-frequency signals and employing a binary search method, this portable device is easy to carry and adapts to harsh environments and nighttime operations. It significantly enhances fault-finding efficiency, ensuring reliable power supply.

Product Parameter (specification)

(1) Signal Generator
Offset Current Output Range	0-40mA
Megohmmeter Measurement Range	0-30MΩ
Output Accuracy	±1mA
Output Power	150W
Maximum Voltage Perpetual Pulse (VPP)	8KV
Measurement Range	0-200kΩ
Detectable Line Length	Greater than 100km
Display	Chinese LCD with backlight
LCD Size	90mm × 73mm
Power Supply	Lithium Battery 24V/12Ah
Operating Time	Greater than 6 hours
Operating Temperature	-10°C to +50°C
Unit Dimensions	327mm × 282mm × 218mm; Weight;8kg
(2) Line Inspection Sensor
Detection Method	Clamp-on CT, Integration Method
Transmission Method	433MHz wireless transmission
Transmission Range	Greater than 40m
Clamp Opening Size	Φ48mm
Measurement Range	0.1mA-100.0mA (non-synchronous current)
Test Accuracy	±1% ±2mA
Operating Time	Greater than 10h
Unit Dimensions	255mm × 78mm × 36mm; Weight;340g
Power Supply	Built-in high-capacity lithium battery, 5V charging via microUSB port
(3) Inspection Locator
Display	Chinese LCD with backlight function
Operating Time	Greater than 10 hours
LCD Size	54mm × 50mm
Unit Dimensions	180mm × 75mm × 35mm; Weight;300g
Power Supply	Built-in high-capacity lithium battery, 5V charging via microUSB port

Product feature and application

(1) Operated via an insulated rod with an internal fuse protection device, ensuring safe and reliable operation.

(2) Equipped with a megger output function to locate single-phase ground faults caused by high-resistance grounding.

(3) Features a built-in high-capacity lithium battery power supply (supports vehicle charging), eliminating the need for external power sources for convenient and durable use.

(4) The signal generator can be configured with one or multiple signal acquisition receivers to further enhance detection speed.

(5) The current acquisition receiver's wireless antenna is built-in, ensuring absolute insulation reliability for the clamp meter.

(6) The backlight display is adjustable for nighttime use.

(7) Compact size, lightweight, simple operation, easy portability, consisting of 4 components.

Prodection details

Core Compatibility: 10kV (35kV compatible) low-current grounded overhead lines, focusing on single-phase ground fault location after power outage. Specific scenarios include:
Conventional single-phase ground fault location: Permanently located faults caused by line insulation breakdown or equipment (porcelain insulators, surge arresters, etc.) breakdown, replacing traditional section-by-section troubleshooting to rapidly pinpoint specific towers/equipment.
Emergency repairs after severe weather: Mass failures caused by strong winds, heavy rain, hail, etc. The portable design adapts to complex terrain, supports simultaneous multi-device troubleshooting, and boosts repair efficiency.
High-resistance/hidden fault detection: Precisely locates high-resistance grounding and latent insulation aging faults undetectable by traditional megohmmeters using the built-in megohmmeter function.
Complex Line Troubleshooting: For radial distribution networks with multiple branches and lengths exceeding 100km, the binary search method narrows the troubleshooting scope, reducing pole-climbing frequency (≤5 times).
Nighttime/Emergency Operations: The backlit display adapts to nighttime scenarios. The built-in lithium battery offers extended runtime (signal generator ≥6h, sensor/locator ≥10h) and supports vehicle charging to meet emergency demands.

Company Qualifications

FAQ

1)Can the ME-W3001 Overhead Line Fault Locator detect faults in insulated lines?

Answer: Yes. During the signal injection phase, connect the signal output cable to the insulated rod attached to the line's grounding ring. Note that the detection process must focus on the line's inherent signal, avoiding signals from distribution transformer leads and grounding rings to prevent misjudgment.

2)Why is it sometimes necessary to segment the line when using the ME-W3001 Overhead Line Fault Locator?

Answer: When ground resistance is high, line distributed capacitance can interfere with detection results, potentially preventing accurate fault location or causing misjudgment. By disconnecting the line segment switch to divide the line into 2-3 segments for separate testing, the impact of distributed capacitance is effectively reduced, improving fault detection success rates.

3)Why doesn't the clamp meter of the ME-W3001 Overhead Line Fault Locator use an extendable probe rod?

Answer: Although telescopic probes appear convenient, in actual operation, the thinner head of the extended probe tends to sway, making it difficult to accurately align the clamp meter during conductor clamping and affecting measurement accuracy. Therefore, this type of probe is not provided.

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