Underground Cable Fault Locator System for 15KV Power Cable

 General information:

The complete set of instruments can solve all the faults of power cables below 35kV. The complete set is composed of four units:

1. Fault location unit: cable fault location host + multiple pulse controller

The color LCD touch screen is adopted, which is simple to operate and easy to read the waveform. At the same time, the ranging system can automatically locate the distance of the fault point, and the fault location is simple and easy.

2. Tracking and identification unit: fully digital multi-function cable detector

The path search adopts all-digital electromagnetic induction technology, which can easily solve the running or non-operating cable direction and identification problems, especially the problem of metal dead ground fault that could not be solved in the past.

3. Fault fixed-point unit: intelligent locator

The precision locator equipped with the system has sound and magnetic waveform display, strength indicator; it can prompt the distance and path of the fault and many other functions.

4. High-voltage signal unit: ultra-light high-frequency and high-voltage signal generator

It is the energy supply part for pre-positioning and precise positioning of the cable fault, and provides high-voltage and high-energy voltage pulses for the cable. It has the advantages of simple wiring, small size, light weight, and convenient movement.

Features:

1. Ranging unit: cable fault location host + multiple pulse controller

Ø Main performance indicators:

1) Test methods: low-voltage pulse method, high-voltage flashover method, three pulse method, eight pulse method, wave speed test.

2) Sampling rate: 100MHz, 60MHz, 40MHz, 20MHz.

3) Test distance: >30Km.

4) Resolution: 1m.

5) Pulse width setting: "0.05", "0.1", "0.2", "0.5","1", "2", "8" microseconds.

6) Wave speed setting: cross-linked ethylene, polyvinyl chloride, oil-impregnated paper, no dripping oil, unknown type.

7) Discrimination method: manual discriminant, automatic discriminant.

8) Analysis settings: scroll, zoom, save, recall, wave shift.

9) Power supply: Built-in rechargeable battery, can work continuously for more than 8 hours after fully charged.

10) Working conditions: temperature -10℃~+45℃, relative humidity 90%.

11) Physical characteristics: volume 280mm×240mm×120mm weight 2kg

12) Multi-pulse controller: Allow input impulse voltage below 30KV.    Volume 370mm×260mm×150mm

2. Path finding and identification unit: all-digital multifunctional cable detector

Ø Main performance indicators:

l Transmitter

1) Output signal: output sinusoidal AC signals of four frequencies, namely low frequency, intermediate frequency, high frequency, and radio frequency;

2) Output power: constant power output, low, medium and high three gears (maximum not less than 6 watts);

3) Output mode: direct connection method, coupling method, induction method;

4) Impedance display: within 99999 ohms;

5) Load matching: 1-10000 ohms;

6) Display interface: large-screen LCD Chinese, graphic display, with backlight;

7) Power source: 6 standard 1.2V rechargeable batteries, charge and discharge 500 times;

8) Standby time: more than 8 hours, power prompt;

9) Overheating and overcurrent: automatic protection;

10) Working temperature: -20℃—50℃

l Receiver

1) Receiving frequency: receiving sinusoidal AC signals of five different frequencies, namely low frequency, intermediate frequency, high frequency, radio frequency, and 50HZ;

2) Receiving mode: wave crest method (horizontal coil), trough method (vertical coil), external device method (A-frame, coupling clamp);

3) Signal interface: three interfaces of digital size, grating length, and voice prompt simultaneously indicate the strength of the signal;

4) Display interface: large-screen LCD Chinese, graphic display, with backlight;

5) Gain control: manual adjustment, dynamic range 000-100db;

6) Detection length:

       A. when the cable is directly connected, the maximum length is 15KM;

       B. When coupling cables, one coupling can measure 3Km, and multiple couplings can be infinite;

       C. When the cable is inducted, it can measure 300m in one induction, and infinite in multiple inductions;

7) Depth measurement:

       A. direct reading detection depth, range 000-250cm;

      B.  80% method for measuring depth, range 000-250cm (induction)500cm (direct connection);

8) Current measurement: direct reading current, range 000-999mA;

9) Detection accuracy: 5% of buried depth;

10) Power source: 6 standard No. 5 1.2V rechargeable batteries, charge and discharge 500 times;

11) Standby time: more than 12 hours, power prompt;

12) Overheating and overcurrent: automatic protection;

13) Working temperature: -20℃—40℃

3. Fault fixed-point unit: intelligent locator

Ø Main performance indicators:

1) Magnetic field channel gain: 0-80dB adjustable.

2) Sound channel gain: 0-80dB adjustable.

3) Battery: Built-in lithium battery battery pack, nominal voltage 7.4V, capacity 2800mAh.

4) Battery power supply time: It can be used continuously for more than 7 hours; the use time is shortened when the backlight is turned on, and the actual use time is related to the time when the backlight is turned on.

5) Charger: input AC100-240V, 50Hz/60Hz; output 4.8V, DC1A.

6) Volume: 274mm×218mm×81mm (host)

7) Mass: 1.5kg (host); 0.5kg (acousto-magnetic synchronous sensor)

8) Conditions of use: temperature -20℃-40℃; humidity 5%-90%; altitude <4500m.

9) Protection level: IP65

4. High-voltage signal unit: ultra-light high-frequency high-voltage signal generator

Ø Main performance indicators:

1) Maximum output voltage: 32KV

2) Maximum working current: 40mA

3) External high voltage capacitor: 2uF/32KV

4) Discharge energy: ≤1024J/5S

5) Instant charging current: >1.5A

6) Display voltage value error: <±2%

7) Minimum discharge cycle: 3 seconds

8) Maximum power: <1.5KVA

9) Working voltage: 220V±10% 50Hz

10) Working environment: temperature -20℃~50℃; humidity (relative) ≤80%; altitude below 4000 meters.

Sansion Power Electic Co., Ltd. is a modern company focusing on design and manufacturing of test and measurement instruments. Our company covers 5,000 square meters with 120 employees.

Sansion has more than 20 years’ experience of producing electrical test sets and solutions for transformers, circuit breakers, CT/PT, relay protection, cable and electric power systems to test and calibration equipment.

Sansion has obtained ISO 9001 quality certificate and all of our products are in conformity with the international standards.

With superior quality, reasonable price and perfect after-sales service, we are aiming to expand the markets in all countries of the world. We look forward to working with you.

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