NDPD Series Cable Path Locator-Wuhan Nanxing Electric Power Technology Co., Ltd.

Phone: 400-027-8938

Mobile: 133 9714 9829

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NDPD Series Cable Path Locator

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Cable and Overhead Line Inspection Series

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NDPD系列电缆路径探测仪

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Product Details

1. Introduction

Intelligent Cable Comprehensive Detector It is a highly versatile path‑finding instrument, featuring… Pipeline route detection, cable identification, pipeline ground fault location, GPS surveying and mapping and various other functions. The instrument consists of Transmitter, transmitting current clamp, receiver 、 Includes a flexible current clamp, test leads, a stethoscope, an A-frame (optional accessory), a mapping app (optional), and RTK (optional). Consists of.

Cloud Services (Optional) Built on the Android platform (compatible with HarmonyOS), it leverages the smartphone’s powerful computing capabilities and network connectivity to interact with the server in real time, enabling functions such as engineering surveying, task management, data management, data visualization, test report generation, data import, data export, and instructional video playback.

Surveying and Mapping App (Optional) ： It is a self-developed app that integrates comprehensive information-management functions, including recording and managing measurement data and generating reports. Designed for use with the cable‑integrated detection instrument, it enables GPS‑based surveying capabilities. The app supports task management and report generation tailored to engineers’ pipeline‑detection workflows, featuring an intuitive engineering‑oriented wizard for ease of use. With a single tap, it generates detailed task reports that include length, depth, measurement frequency, measurement current, location information, and more, significantly boosting the efficiency of underground pipeline inspection personnel.

Receiver Specifications

Functionality	Pipeline detection (cable location tracking, direction indication, depth measurement, current measurement), cable identification, pipeline ground fault location, pipeline surveying and mapping, cloud services, Bluetooth communication.
Power supply	7.4V DC 3400mAh rechargeable lithium battery
Input method	Built-in receiving coil, flexible caliper, stethoscope
Bluetooth communication	Supports Bluetooth communication for instrument control and connects to a mobile app for various data processing tasks.
Receiving frequency	Active probing frequencies: 577 Hz, 640 Hz, 1280 Hz, 2.56 kHz, 3.20 kHz, 4.09 kHz, 8.19 kHz, 10 kHz, 33 kHz, 66 kHz, 82 kHz, 201 kHz Power-frequency passive detection frequencies: 50 Hz, 60 Hz RF passive detection frequency bands: center frequencies are 33 kHz and 82 kHz.
Pipeline Detection Mode	Wide-peak method, narrow-peak method, and valley method
Pipeline detection results show	Classic positioning mode, wire cruise mode, signal curve mode
Pipeline detection Detection range	Direct‑connection method: Typically supports cable lengths of 0 to 20 kilometers, primarily determined by ground resistance, cable resistance, and the depth at which the cable is buried. Coupling method: Typically supports cable lengths of 0 to 10 kilometers, primarily determined by grounding resistance, cable resistance, and the depth at which the cable is buried. Induction method: Suitable for cables buried at depths of less than 2 meters.
Depth and Current	Automatically reads cable depth and current values.
Pipeline surveying depth	0~20m
Depth accuracy	Planar positioning accuracy: the location of the centerline of the target cable or pipeline: ±5% (for burial depths of 0–3 m) ±10% (for burial depths of 3–20 m)
Correctness Prompt	Eliminate interference from nearby cables: when measuring in the presence of adjacent cables, distinguish the target cable by analyzing the varying signal strengths and current‑phase information provided by the neighboring conductors. During cable tracing, monitor the phase meter’s dial and pointer to differentiate between the cable under test and its adjacent counterparts.
Audio prompt	Frequency-modulated tone varying with signal strength
Anti-interference capability	An extremely narrow receiving bandwidth and a unique digital processing method effectively suppress power‑line and harmonic interference from nearby operating cables and pipelines.
Jamming range	When using the coupling method or the induction method, the transmitter invariably generates interference within a close range. The extent of this interference depends on the transmission power and frequency: higher power and higher frequencies result in stronger interference. The minimum distance at which the receiver is free from interference by the transmitter often needs to be determined experimentally: Pipeline detection: Using the coupling method, no interference can be confirmed beyond 5 meters; using the induction method, no interference can be confirmed beyond 20 meters. Cable identification: Using the coupling method, interference can be ruled out at distances of 2 to 5 meters.
Cable identification	Identification methods: flexible caliper–based intelligent identification and stethoscope–based identification. Number of calibratable cables: 1–10; Calibration value: One of the criteria for successful identification is that the current ratio between the received signal and the transmitted signal falls within the range of 75% to 135% of the calibration value. Directionality: The transmitting clamp, the receiving clamp, and the applied signal must be aligned in the same direction; this is one of the conditions for successful identification.
Cable identification Detection range	Direct‑connection method: It can detect signals with loop resistance ranging from 0 Ω to 8 kΩ (typically supporting cable lengths of 0 to 20 km, primarily limited by ground resistance and cable resistance). Coupling method: It can detect signals with loop resistance ranging from 0 Ω to 1 kΩ; (typically, it supports cable lengths of 0 to 6 km, primarily limited by ground resistance and cable resistance).
LED night lighting	The receiver features an LED flashlight function.
Liquid crystal	3.5-inch color LCD screen
Size	Approx. 290 mm (L) × 128 mm (W) × 700 mm (H)
Quality	Approximately 1.90 kg
Charger	DC 8.4V 1A
Lighting lamp power	1W max
Connection interface	1mini-B USB port (for firmware updates) 1DC charging port 1* Flexible caliper connection socket
Flexible current clamp	Approximately 620 mm in length, with a wire diameter of about 8 mm.
Inner diameter of the coil	phi 200 mm (customizable to larger diameters upon request)
Stethoscope size	Approximately 111 mm × 60 mm × 27 mm (stethoscope optional)
Lead length	Stethoscope lead length: approximately 3 m
Operating temperature and humidity	-10℃ to 40℃; below 80% RH
Storage temperature and humidity	-10℃~50℃; ≤95% RH, no condensation
Withstand voltage	AC 3700 V/rms (between the upper and lower ends of the enclosure)
Suitable for safety regulations	IEC 61010-1 CAT III 600 V, IEC 61010-031, IEC 61326, Pollution Degree 2

Transmitter Specifications

Functionality	Multiple frequency signal transmission methods
Power supply	11.1V DC 12800mAh rechargeable lithium battery
Output method	Direct connection method, caliper coupling method, induction method
Output frequency	577 Hz, 640 Hz, 1280 Hz, 2.56 kHz, 3.20 kHz, 4.09 kHz, 8.19 kHz, 10 kHz, 33 kHz, 66 kHz, 82 kHz, 201 kHz
Output power	10W max, 10 adjustable levels
Impedance	Fully automatic real-time impedance matching and protection functions
Direct-connection output voltage	150 Vpp max
Circuit protection	Features overload and short-circuit protection.
Liquid crystal	5.6-inch color LCD display
Instrument size	Approximately 320 mm (length) × 275 mm (width) × 145 mm (height)
Quality	Transmitter: approximately 3.85 kg; launch clamp: approximately 1.18 kg
Charger	DC 12.6V 2A
Ejector clamp size	297 mm × 194 mm × 39 mm (length × width × thickness)
Internal diameter of the firing clamp	phi 150mm
Ejector clamp wire length	3m
Test line	Red test lead, 3 m; black test lead, 3 m.
Connection interface	1Type-B USB port (for firmware updates) 1DC charging port 1* Signal transmitter clamp connection socket 2* Direct-Connect Test Cable Interface
Resilience	The transmitter features an integrated, specialized toolbox‑style design, with a housing capable of withstanding approximately 200 kg of pressure.
Withstand voltage	AC 3700 V/rms (between the top and bottom of the instrument enclosure)
Electromagnetic properties	IEC61326 (EMC)
Suitable for safety regulations	IEC 61010-1 (CAT III 300 V, CAT IV 150 V, Pollution Degree 2)

Keywords:

NDPD Series Cable Path Locator

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