Solutions For Cable Fault Detecting

 

Underground cables that carry electrical energy are susceptible to faults that can occur due to various reasons such as environmental factors, wear and tear, corrosion, and accidental damage. When a fault occurs, it can lead to a disruption in the power supply and can even cause electrical fires. Therefore, It is essential to locate these faults as soon as possible to minimize downtime.

Cable fault detecting or cable fault locating is a process of identifying and locating faults in underground cables. Fault locating can be done using different methods such as visual inspection, cable tracers, and specialized fault locators.

 

Our cable fault detecting equipment can accurately and quickly detect the main insulation failure of power cables with voltage levels of 35kV and below; Calibrate cable length; and precisely detect of cable buried direction and depth.

 

 

Equipment name	Model	Qty	remark	image
cable fault detector	HY5502	1SET	Multiple pulse 12.1-inch industrial controller
Cable fault locator	HY5503C	1SET	Acoustic-magnetic synchronization
Pipeline locator	HY5507	1SET	Including transmitting clamp, receiving clamp, A frame
Trolley type high voltage pulse generator	HY5354TS	1SET	4μF/32kV、 16μF/16kV、 64μF/8kV

 

 

HY5502 cable fault detector

 

HY5502 cable fault detector Parameters: 

★ Sampling frequency:400MHz;
★ Minimum resolution: 0.1m;
★ Low voltage pulse width: 0.25uS/2uS/4uS;
★ Test blind area: ≤20m;
★ Ranging range: ≥60km;
★ Measurement error: ≤± (0.5% ×L+1m), L is the cable length;
★ Test cable length: < 1km (short distance); < 3km (medium distance); > 3 km (long distance) three kinds, (low-voltage pulse test amplitude: 400Vpp);
• Pulse coupler withstand voltage: DC 35kV;
• Working conditions: temperature -25℃ ~ +65℃, relative humidity 85%, atmospheric pressure 750±30mmHg;
• Volume and weight: cable fault tester 430×380×220mm-10kg;
Pulse coupler 430×380×220mm-10kg.

 

HY5502 cable fault detector Features:

★ 12.1-inch industrial computer control, touch operation mode;
★ With the function of measuring wave speed and fault distance;
★ Automatic continuous sampling, waveform capture timely and accurate;
★ The instrument adopts the latest technology of embedded industrial computers and the most advanced multi-pulse test technology, and also has the impact high-voltage flashover method and low-voltage pulse method;
★ Any high-resistance fault presents the simplest waveform characteristics similar to a low-voltage pulse short-circuit fault, which is easy to interpret.
★ With user-friendly software and a full Chinese menu and screen touch button operation. Key definition brief
Simple and clear. The measurement method is simple and fast;
★ The success rate of detection failure, test accuracy, and test convenience is better than any domestic testing equipment;
★ Ultra-high brightness, large LCD screen as a display terminal, can be observed in a direct sunlight environment
Screen waveform. The instrument has powerful data processing ability and a friendly display interface;
★ The pulse coupler sends the reflected signal and displays the full-length waveform of the cable open circuit automatically. It makes the representation of fault characteristic waveform very simple. There is only one type of high-resistance fault waveform, that is, short-circuit fault waveform similar to the low-voltage pulse method, which automatically displays the fault distance.
★ With a mass test waveform storage function: the field test waveform can be conveniently stored in the instrument according to the specified order, for observation at any time;
★ with standard printer USB interface;
★ Simple operation, high reliability. High-cost performance;
★ Built-in polymer lithium battery power supply, can test cable open circuit and low resistance short circuit fault in no power supply environment.

 

 

HY5503C Cable fault locator

 

The cable fault locator is used to determine the fault point of the power cable by acoustic and magnetic synchronous methods. With the help of the shock discharge generator to generate electronic flashover, picked up and amplified by the corresponding probe, by auditory and visual judgment, to determine the exact location of the fault point, complete the precise positioning of the cable fault point within the rough measurement range of the equipment, set the acoustic magnetic time difference positioning technology, path assisted testing, and other technologies in one, provide a variety of test modes and a variety of tips. Efficiently and accurately locate cable faults.
This fixed-point instrument is suitable for low resistance, short circuit, open circuit faults, high resistance leakage, and high resistance flashover fault of power cables, high-frequency coaxial cables, street lamp cables, and buried wires of various materials with different sections and different media.

 

HY5503C Cable fault locator parameters: 

★ Filter parameter
Full-pass: 100Hz to 1600Hz.
Low-pass: 100Hz to 300Hz.
Qualcomm: 160Hz to 1600Hz.
Bandpass: 200Hz to 600Hz.
★ Channel gain: 8 adjustable.
★ Magnetic channel gain: 8 adjustable.
★ Output gain: 16 speed (0 ~ 112db)
★ Output impedance: 350Ω
★ Acoustic magnetic positioning accuracy: less than 0.1m.
★ Path identification accuracy: less than 0.5m.
Power supply: 4*18650 standard lithium battery.
★ Standby time: more than 8 hours.
★ Volume: 428L×350W×230H
★ Weight: 6kg.
★ Ambient temperature: -25 ~ 65℃; Relative humidity: ≤ 90%.

 

HY5503C Cable fault locator features: 

★5 "touch bright LCD to ensure visibility in sunlight.
★ Using acoustic magnetic synchronous positioning technology, automatic calculation of acoustic magnetic time difference.
★ The gain value and trigger value of the acoustic signal and magnetic signal are manually adjusted to adapt to a variety of environmental fixed points.
★ With background noise reduction technology, you can choose a variety of filtering methods.
★ With BNR background noise reduction and mute noise reduction function.
★ With path deviation indication.
★ Equipped with multi-layer physical isolation signal sensor, waterproof class IP65.
★ Built-in large capacity lithium battery, long standby time, with fast charger.
★ Compact and light, easy to operate, easy man-machine interface.

 

HY5507 Pipeline locator

 

The pipeline locator uses the principle of electromagnetic induction to detect the precise direction and depth of underground cables and to locate the open circuit, short circuit and skin fault points of cables. It can be used to find the path of the cable (live or not), and can be used to find directly buried cable faults.

Pipeline locator is mainly composed of receiver and transmitter (transmitting clamp, receiving clamp and A-frame are optional)

 

HY5507 Pipeline locator 

1. Receiver
Operating frequency: low frequency, medium frequency, high frequency, RF 50HZ
Antenna mode: trough method (vertical coil), peak method (horizontal coil)
Sound indication: frequency modulation tone that varies with signal strength
Current indication: shows the effective current value of the cable under test (unit: mA)
Operating temperature: -10°C -- +55°C
Battery model: Rechargeable battery
Power indicator: graphic display
Battery life: continuous operation >8 hours: intermittent operation >16 hours
Size: 70×20×11CM
Weight: 3kg (with battery)
Signal strength: ladder diagram, digital range 0-999
Gain control: Manually adjust the dynamic range to 100db
Detection depth: The maximum detection is not less than 10 meters
Maximum detection distance: up to 15KM for a well-insulated cable in direct connection
Depth measurement: Press the depth key to display three digits, the maximum depth can be 2.5 meters
Precision * : Low frequency: ± (1-5) %≤2.5 m Radio frequency: ± (5-12) %≤2.5 m
* Depends on the site environment, the shape of the non-concentric lines, the number of adjacent lines, and the return current from the soil.

2. Transmitter
Operating frequency: low frequency, medium frequency, high frequency, RF
Working mode: direct connection method, coupling method, induction method
Matching load: 5 ohms - 3000 ohms
Impedance display: five digits
Overheat and overcurrent: automatic protection
Power output: low, middle, high gear
Battery type: 8 number 1 alkaline batteries
Battery life: Continuous operation from 4 hours to 8 hours depends on the frequency and output power when in use
Intermittent operation for 6 hours to 10 hours depends on the frequency and output power when in use
Operating temperature: -10°C - 55°C
Size: 16×16×39CM
Weight: 4kg (including battery)

 

HY5354TS Trolley type high voltage pulse generator

 

It is mainly used for shock discharge and withstand voltage test of low voltage cable fault test.
The device integrates DC high voltage source, energy storage capacitor, discharge ball device, automatic discharge device, voltage level switching device into one of the trolley type high-end experimental instrument. The equipment completely solves the problems of convenience, portability, safety and reliability of traditional experimental equipment.

 

HY5354TS trolley type high voltage pulse generator parameters: 

★ Impact high voltage: 0 ~ 32kV, 0 ~ 16kV, 0 ~ 8kV three adjustment
★ High pressure partial pressure: voltage accuracy 1.5
★ Built-in capacitance: 4μF/32kV, 16μF/16kV, 64μF/8kV three adjustment
★ Discharge power: 2048J
★ Impact time: automatic impact about 5 seconds, manual impact any control time
★ Impact power: 2KVA
★ Volume: 534L×444W×805H
★ Weight: no more than 105KG
★ Working power supply: AC 220V±10% 50Hz±2Hz
★ Ambient temperature: -20 ~ +50℃

 

HY5354TS trolley type high voltage pulse features: 

★ High voltage pulse output is uniform and controllable;
★ With current, voltage double 1.5 level pointer table display, intuitive and clear, impulse discharge process at a glance;
★ High voltage side voltage measurement, real-time accurate;
★ With zero start protection function, safe and reliable;
★ With three-speed voltage range and capacitor capacity switching function;
★ Unique high voltage measurement design, in the stopped state, will automatically discharge the internal capacitance of the equipment;
★ Discharge time can be selected timing and manual two modes;
★ with DC voltage resistance function;
★ Internal installation of high-precision test cable fault sampling waveform module;
★ Humanized design trolley, easy to move