Cable Fault Tester ZWT201   

Cable Fault Tester：The whole machine adopts industrial control plastic cabinet, small and delicate, easy to carry；
Cable Path Tester：Digital narrowband filtering technology has the strongest anti-interference ability；
Acoustic Magnetic Synchronous Fault Locator：The operation is extremely simple, easy to carry and maintain, with powerful functions.
Surge Voltage Generator：Integrated design with built-in capacitors, compact structure, no high-voltage exposure, safe and reliable.

Part 1 .Cable Fault Tester

Product Introduction

Power cable laying environment is extremely complex, cable fault initial positioning, decided the efficiency of the whole process of fault test, under the condition of today’s technology, the electric power cable fault ranging have a better solution. As a leader in the field of electric cable testing, our company has been striving for perfection and innovation in product development and development.
Cable Fault Tester adopts the highest level of international time-domain reflectometer (TDR) technology, and safe reliable electricity coupling sampling technology, determine fault waveform distance automatically, simple and clear, easy to use; The whole machine adopts industrial control plastic cabinet, small and delicate, easy to carry; The man-machine interface is friendly, even if operated by non-professionals, it can be familiar with and used quickly, and the cable fault test can be completed efficiently and accurately.

Functional Characteristics

1. Used for various faults of power cables of different levels, cross sections, media, and materials of 35kV and below, including open circuit, short circuit, low resistance, high resistance leakage, and high resistance flash-over faults.
2. The low-voltage pulse method, impact flash-over method, triple pulse method, multiple pulse method, and velocity measurement method can be used in conjunction with high-voltage equipment to achieve traditional cable fault testing.
3. Industrial grade 10.4-inch color touch LCD screen display, all Chinese operating software and user interface, sub menu mode and text prompts to achieve human-machine interaction.
4. The global waveform and local waveform are displayed synchronously, facilitating overall analysis and detailed adjustment.
5. Any high resistance fault presents the simplest waveform characteristics similar to low-voltage pulse short circuit fault, which is easy to interpret.
6.When using the multiple pulse method for testing, the interface simultaneously collects 8 true wave-forms, which is more convenient for interpretation and reduces testing errors, improving testing accuracy.
7. Equipped with a built-in power supply, it can be used for a long time in power free environments.
8. Small size, light weight, easy to use, high success rate and testing accuracy in detecting faults.
9. Stable performance in any environment, no crash, and safe signal acquisition high-voltage protection measures.
10. With built-in storage/retrieval function, it is convenient to save or retrieve data and wave-forms for reanalysis.
11. The test signal provides multiple pulse widths without blind spots.

Technical Parameter

Multiple pulse cable fault tester
Sampling method	Low voltage pulse method, impact flashover method, velocity measurement method (extended to three pulse method, eight pulse method)
Sampling rate	200 MHz, 100 MHz, 80 MHz, 40 MHz, 20 MHz, 10 MHz
Pulse width	0.05 μ s. 0.1 μ s. 0.2 μ s. 0.5 μ s. 1 μ s. 2 μ s. 8 μ S
Wave speed setting	Cross-linked ethylene, polyvinyl chloride, oil-immersed paper, non dripping oil, and unknown type self setting
Impulse high voltage	40kV and below
Test distance	＜ 60km
Resolution	1m
Test accuracy	1m
Display method	Industrial grade 10.4-inch color touch LCD screen
Operation mode	Touch screen operation, physical knob operation
Analysis settings	Functions such as scrolling, zooming, saving, calling out, wave shifting, etc
Working power supply	Built in battery power supply, passive operation of coupling unit
Continuous operation	＞ 4h (external power supply can also be used)
Storage function	With data storage function, it can store a large number of on-site wave-forms and data, and can be called up and used at any time
Waveform analysis	All high resistance fault wave-forms are only characterized by short circuit fault wave-forms using the low voltage pulse method, which is convenient for analyzing stuck points
Waveform processing	It can display the measured waveform of the fault point and the full-length open circuit waveform of the good phase simultaneously on the screen for comparison and superposition, and can automatically determine the fault distance
Packaging specification	Adopting industrial grade black safety protection box, with protection level of IP67
Overall dimensions	L 365mm × W 269mm × H 169mm
Weight	3.8kg

Part 2 .Cable Path Tester

Product Introduction

The cable path detector (pipeline instrument) can detect, identify, and measure the burial depth of underground cable lines (power outage/electrification) and metal pipelines; And fault diagnosis of street light cables and buried lines, as well as troubleshooting of underground live cables. This equipment, with its superior performance and flexible and convenient detection methods, is widely used in fields such as electricity, telecommunications, water supply, heating, gas, petroleum, chemical industry, urban public utilities, and has become an essential tool for construction, acceptance, and pipeline network survey.
This product has a wide frequency range. By configuring a high-power transmitter and a simple digital receiver, it adopts multi frequency detection technology, which is very convenient for on-site operation. By selecting the optimal frequency and accurately locating underground pipelines, it helps you quickly find buried telephone lines, optical cables, CATVs, power lines, gas pipelines, gas pipelines, and water supply and drainage pipelines. This product has a high degree of automation and can achieve professional detection results even for non professionals, playing a positive role in improving the pipeline management level of relevant industries in China..

Functional Characteristics

1. Digital narrowband filtering technology has the strongest anti-interference ability.
2. Continuous automatic impedance matching without manual intervention.
3. Multiple antennas, multiple channels, and direct display of cable burial depth.
4. Current measurement is the most effective method for identifying target pipelines in densely populated areas.
5. The large capacity lithium battery charging pack ensures longer working hours and is convenient for outdoor use.
6. It can search for 50Hz running cable paths.
7. The built-in ohmmeter can measure the loop resistance.

Technical Parameter

Transmitter
Output frequency	low frequency, intermediate frequency, high frequency, radio frequency [815 Hz, 8.2 kHz, 32 kHz, 82 kHz]; Identify composite frequencies 2-4kHz
Output mode	direct connection, induction, coupling
Clock accuracy	≤ 50ns
Output power	Automatically adjustable with matching load of 1-10 W, with a resistance of 5-25000 Ω
LCD display	automatic backlight lighting, graphical display of output energy, digital display of output power/current/voltage and loop resistance, operation mode, self check status, load resistance, voltage, SS intelligent identification signal, four-way navigation key, menu selection, voltage alarm, SS intelligent identification signal, volume, external power/charging status, etc
Operation mode	soft buttons
Output power	≥ 10W
Battery model and lifespan	18650 lithium battery charging set, maximum power continuous output time>8h
Overheating and overcurrent	automatic protection
Battery status	graphical display
Caliper diameter	135mm; Opening 145mm
Charger	AC 100-240 V, 50-60Hz
Volume	277 mm × 227 mm × 153 mm
Weight	2.8 kg
Receiver
Active frequency	low-frequency, intermediate frequency, high-frequency, RF, power frequency 50Hz [815 Hz, 8.2 kHz, 32 kHz, 82 kHz]; Depth with left/right direction indication
Passive frequency	50/60Hz, 100Hz, 120Hz, RF14-21kHz; Without depth and left/right direction display
Clock accuracy	≤ 50ns
Depth range	0-10m, 45 degree depth measurement, 80% depth measurement
Depth measurement accuracy	± 2.5%+5 centimeters (0-2m) (related to on-site environment, shape of non concentric lines, distribution of adjacent pipelines, etc.)
Sound indication	FM tone that varies with signal strength, divided into four levels of size
Signal strength indication	LCD display, sound prompt
Signal strength representation	bar chart, digital range 0-999
Gain dynamic range	100 dB, automatic and manual adjustment
Compass direction indication	left and right automatic indication of target pipeline position
LCD display	VGA high brightness LED, supporting operation in strong sunlight, backlighting, ensuring normal operation at night
Operation mode	soft buttons
Display content	signal strength, depth, current, frequency, battery status, SS intelligent signal recognition indication, GC compass guidance indication, DA signal distortion warning, left/right positioning guidance arrow, signal gain, volume
Live identification	SS intelligent signal recognition indication, GC compass guidance indication, DA signal distortion warning
Battery model and working time	18650 lithium battery charging set, continuous operation>12h
Battery status	continuous battery level graphic display
Volume	650mm × 32mm × 110 mm
Weight	1.6 kg

Part 3 .Acoustic Magnetic Synchronous Fault Locator

Product Introduction

This product is used for rapid and accurate positioning of buried cable insulation fault points and accurate detection of cable burial paths.

Functional Characteristics

1. The use of special structured acoustic vibration sensors and low noise specialized devices as preamplifiers greatly improves the sensitivity of the instrument for fixed point and path detection. In signal processing technology, the use of digital display of the distance between the fault point and the sensing probe greatly eliminates blindness during fixed point operation.
2. When a faulty cable is overhead in a cable trench, the vibration sound of the entire cable makes any locator helpless and unable to determine the specific location of a closed fault. Nowadays, as long as the sensor probe of this instrument contacts the faulty cable or nearby cable, the fault distance and direction can be accurately displayed, and the fault location can be quickly determined effortlessly.
3. The power frequency adaptive cancellation theory and high power frequency notch technology greatly enhance the suppression and anti-interference ability of 50Hz power frequency signals in strong power frequency electric field environments, reducing the fixed blind spot. In terms of instrument function, the use of acoustic and electrical synchronous reception display technology effectively overcomes the difficulty of fixed point caused by environmental noise interference in the fixed site. Especially the digital display of fault distance eliminates the need for operators to analyze and judge complex waveforms, which to a considerable extent replaces the coarse distance measurement function of the flash tester. For faulty cables hundreds of meters long, fixed points can generally be implemented without rough testing, truly achieving efficiency, speed, and accuracy. The use of 15kHz amplitude modulated electromagnetic wave and amplitude detection technology for path detection and cable burial depth measurement avoids the interference of television line frequency on the fixed-point instrument when the original constant amplitude 15kHz signal source is used.
4. The operation is extremely simple, just turn on the power switch, and there is no need to shift gears or select functions. Compact, compact, modular, easy to carry and maintain, with powerful functions.

Technical Parameter

Digital display distance	maximum 500 meters, minimum 0.1 meters
The rough measurement error is less than 10%, and the fixed point error is zero.
Electromagnetic channel gain	≥ 110dB
Sensitivity of electromagnetic channel receiver	≤ 5 μ V
Sound channel audio amplifier gain	≤ 120dB
Power frequency suppression capability	>40dB
Acoustic and magnetic synchronous display monitoring	that is, at a fixed point on site, the digital screen is repeatedly counted once under the action of the shock electromagnetic wave formed by the impact high voltage, and displays the fault distance or full brightness (500.0 meters). At the same time, the seismic waves generated by sparks during shock discharge breakdown at the cable fault point are monitored by high impedance headphones to eliminate environmental clutter interference
When using a path antenna as a sensor, directly plug and unplug the black probe antenna, and use the trough method to accurately detect the cable path
Working power supply	Equipped with a built-in rechargeable battery for power supply, with a continuous working time of more than 12 hours
Overall dimension	415mm long × Width 319mm × Height 168mm
Weight	fixer 1.2kg; Bottom probe sensor 1.0kg; The entire machine (including the box) weighs 6.5kg

Part 4 .Surge Voltage Generator

Product Introduction

This product is the latest innovative upgraded product developed by our company in the field of long-term cable fault testing research. This product meets the “General Technical Conditions for High Voltage Testing Devices in the Electric Power Industry Standard of the People’s Republic of China” and adopts our company’s latest patented technology for high-voltage impulse control. It is suitable for detecting power cable faults of various voltage levels and is an essential high-voltage impulse signal generation device for locating various high resistance faults, flash-over faults, low resistance grounding faults, and difficult cable faults in power cable fault testing, Widely applicable for rough measurement and precise positioning of various power cables, street light cables, railway signal cables, and communication cables.

Functional Characteristics

1. Integrated design with built-in capacitors, compact structure, no high-voltage exposure, safe and reliable;
2. Industrial grade 4.3 inch color LCD display, user-friendly human-machine interface, dynamic display of real-time high-voltage value, working current, and fault point discharge indication, comprehensive and intuitive data display;
3. Intelligent design control, low voltage operation of the main control system, can preset voltage values, software automatically boosts and stabilizes voltage, without the need for manual voltage regulation;
4. Adopting the latest patented high-voltage impact control technology, the pulse output cycle is controllable and adjustable, the system software automatically judges, and has an over-current automatic protection function;
5. It has an automatic discharge function, which automatically discharges the residual voltage of the built-in capacitor when it stops working, and simultaneously discharges the residual voltage of the external test cable;
6. It has a one button emergency stop function, which can cut off the high voltage and achieve automatic discharge with one button at any time, without the need for manual discharge with a discharge rod, ensuring safety and stability;
7. Simple wiring, dedicated high-voltage output line connected to faulty cables, using a dedicated combination grounding wire design to avoid abnormal operation caused by human wiring, and stable performance;
8. The structure and function are complete and reliable. The box is made of industrial grade black safety protection box, non aluminum alloy box, high-end and beautiful, easy to carry, safe to operate, and can work continuously for more than 8 hours.

Technical Parameter

Output Voltage	0-32kV negative DC high voltage, continuously adjustable
Output Mode	high-voltage pulse output, high-voltage DC output, two modes
Capacitor	2uF（4uF）
Energy	1024J（2048J）
Power	≤1.5kVA
Working Mode	continuous pulse, single pulse, and DC output
Pulse Period	0～99s adjustable and controllable
Automatic Discharge	Residual voltage of automatic discharge equipment and external tested cables within 3 seconds of automatic discharge
Stop Function	The emergency stop function has emergency stop/start buttons to achieve one click stop in emergency situations
Display	Industrial grade 4.3 inch color LCD screen, 480 * 240 pixels
Display Information	Analog dial type real-time display of output high voltage, bar display of preset voltage, digital display of working current, dynamic icon indication of discharge
Accuracy	The error between the actual voltage and the displayed voltage is ≤ ± 2%
Power Supply	AC220V±10%，50Hz, can be operated with an external mobile power supply
Grounding	Special combination grounding wire design for grounding specifications, using a one in three method to complete work grounding
Package	The packaging specification adopts industrial grade black safety protection box, non aluminum alloy box, high-end and beautiful
Conditions	Operating temperature -10 ℃~50 ℃; Environmental humidity ≤ 90%
Specification	L490mm × W370mm × H450mm; Weight: ≤ 23kg (2uf), ≤ 28kg (4uf)