Product Introduction
The Underground Cable Fault Locator has been developed to address the evolving demands of the power industry. By integrating numerous advanced solutions for cable fault testing and capitalizing on the rapid development of information technology, this system moves beyond traditional single-chip microcontroller and notebook-based cable fault testers. Built on an embedded computer platform, it establishes a networked cable fault test service platform tailored to the specific characteristics of the cable fault testing industry. The system incorporates USB communication, touch screen technology, and 3G communication, significantly enhancing functionality and application value while ensuring ease of operation in field environments.
Given the increasing prevalence of buried cables, the complete system complies with the general technical specifications for power equipment special test instruments as defined in the People's Republic of China power industry standards DL/T 849.1–DL/T 849.3-2004. It consists of four components: a pulse generator, fault locator, cable path tracer, and associated accessories. The system is designed to test various types of power cable faults, locate cable paths, determine cable burial depth, and accurately diagnose faults in signal control cables and street lighting cables used in railway, airport, and similar applications.
The Underground Cable Fault Locator represents years of continuous development by our company in pursuit of world-class performance. It embodies the technical expertise and dedicated efforts of our engineering team. This product achieves performance comparable to international standards, with the complete equipment set surpassing global counterparts in portability.
The core multi-pulse method technology revolutionizes traditional testing approaches, fundamentally resolving the long-standing challenge of interpreting high-impedance fault waveforms. With the multi-pulse generator, any complex high-impedance waveform can be transformed into a familiar, easily identifiable low-voltage pulse short-circuit fault waveform. This eliminates the difficulty users often face in interpreting complex high-impedance fault waveforms and significantly improves the accuracy of critical rough measurements.
Production functions
TDR Multi-Pulse Cable Fault Tester – Function Summary:
Fault ranging: Quickly locates fault points such as open circuits, short circuits, grounding, high-resistance leakage, flashover, and insulation breakdown in cables.
Multi-pulse analysis: Enhances waveform recognition capability for high-resistance and flashover faults, providing more accurate positioning and stronger anti-interference performance.
Waveform analysis: Real-time display, storage, and comparison of test waveforms, with cursor ranging and fault analysis support.
Cable parameter measurement: Measures cable length, velocity of propagation (VOP), and positions of terminals and intermediate joints.
Extended functions: When used with a path locator and pinpointing receiver, enables cable path tracing, depth measurement, and precise fault pinpointing.
Product Characteristics
1. Industrial Embedded Platform: Utilizes an industrial-grade embedded computer platform system designed for robust stability in demanding environments. Powered by lithium battery, it is highly convenient for field testing.
2. Large Touchscreen System: Features a 12.1-inch large-screen touch system with an integrated XP operating platform, marking a significant advancement beyond the era of single-chip microcontroller-based cable testers.
3. USB Communication & Dual Control: Adopts a new USB communication interface for stable signal acquisition. Supports dual control and dual displ
ay with a notebook computer. The host automatically selects from five sampling frequencies ranging from 6.25 MHz to 100 MHz, accommodating cables of various lengths while reducing rough test errors.
4. Intelligent Software Functions: Software enables automatic fault search, automatic distance display, and audible alarm for incorrect card insertion. Dual cursors can be positioned with a resolution of 0.15 m. Waveforms can be compressed, expanded, and overlapped as needed. Up to ten low-voltage pulse waveforms can be displayed simultaneously on the same screen for selection, st
acking, and positioning, improving test accuracy and reducing errors.
5. Remote Expert Support: Supports 3G communication terminals or wireless network cards. Dedicated 3G software enables remote real-time technical support from experts, allowing remote control of the user's host for timely waveform analysis and guidance during field tests.
6. Precision Pointing with Digital Display: The critical precision pointing instrument features direct digital display of the distance between the tester and the fault point—an innovation in domestic pinpointing technology. This provides strong assurance for rapid and accurate cable fault location while minimizing power outage losses.
7. Multi-Pulse Generator: Delivers one discharge and ten low-voltage pulses with intuitively superimposed short-circuit waveforms for easy analysis. The multi-pulse generator is compact and weighs only 5 kg, achieving true portability for the complete equipment set.
8. High-Voltage Discharge Options: Offers three types of high-voltage discharge components for user selection. The high-frequency high-voltage power supply (8.9 kg) replaces the traditional 65 kg test transformer and operation box, filling a technological gap in the domestic market.
Parâmetros técnicos
| Modo de exibição | Tela de toque LCD industrial (plataforma operacional XP) |
| Modo de armazenamento | Fixo 8g |
| O método de teste | Método de pulso de baixa pressão, método de pulso múltiplo, método de fluxo relâmpago |
| Modo de operação | Operação dupla, operação com caneta touch e mouse |
| A distância do teste | Nada menos que 60 km |
| Distância de teste mais curta (área cega) | 0-5 m ou nenhum ponto cego |
| Erro de ponto preciso | ±0,2m |
| Erro de teste | O erro sistemático é inferior a ± 1% |
| Gerador de pulsos múltiplos | Tensão de impulso ≤40kV |
| A resolução do | V/FM.V is the transmission velocity m/s;Software cursor 0.10 m |
| Frequência de amostragem do instrumento | 6.25MHz、12.5MHz、25MHz、50MHz、100MHz |
| Energia e consumo de energia | AC220V±10%;Não mais que 15W;DC12V (7AH);Não mais que 20 w |
| Tempo de espera | Pode ser usado continuamente por cerca de 6 horas |
| O peso do hospedeiro | 6,2 kg |
| A temperatura ambiente | -10℃～40℃ |
| Dimensão total | 180mm×300mm×400mm |
| A temperatura | -20℃～+40℃ |
| Humidade relativa | ≤80% |
Application Scenarios
Power systems: Fault detection and emergency repair of transmission and distribution cables.
Industrial enterprises: Cable operation and maintenance in factories, mines, petrochemical plants, and other industrial facilities.
Municipal engineering: Maintenance of street lighting, underground utility tunnels, and urban power supply networks.
Rail transit: Testing of railway signaling, power, and communication cables.
Telecommunications industry: Fault diagnosis and line maintenance of communication cables.
New energy sector: Cable testing in wind power, photovoltaic, energy storage, and other new energy applications.
Construction and testing units: Cable laying acceptance, line inspection, and third-party testing services.
FAQ about TDR Multiple Pulses Cable Fault Tester
What types of cable faults can the TDR multi-pulse cable fault tester detect?
The TDR multi-pulse cable fault tester can detect various cable faults, including open circuit faults, short circuit faults, low-resistance grounding faults, high-resistance leakage faults, flashover faults, and insulation breakdown faults. With the multi-pulse analysis technology, the device can more accurately identify complex fault characteristics and improve the success rate of locating high-resistance and intermittent faults.
What is the difference between the TDR multi-pulse cable fault tester and a traditional TDR tester?
Traditional TDR testers primarily rely on a single pulse reflection waveform for fault analysis, which limits their ability to identify complex faults such as high-resistance faults and flashover faults. The TDR multi-pulse cable fault tester, however, employs multi-pulse analysis technology, enabling continuous acquisition and comparison of multiple fault waveforms. This enhances the effective reflected signal while suppressing noise interference, making the fault waveforms clearer and significantly improving the positioning accuracy and detection success rate for complex faults.
Why is the multi-pulse mode more suitable for detecting high-resistance faults?
The reflected signals generated by high-resistance faults are typically weak and are easily drowned out by noise when using traditional single-pulse testing. The multi-pulse mode continuously collects multiple reflected signals and performs overlay analysis, which enhances fault characteristics and improves the signal-to-noise ratio. This makes the waveforms of high-resistance and flashover faults more distinct, thereby improving the accuracy and reliability of fault location.
