Product Overview & Application Scenarios
Overview
The HM-A300 Fully Intelligent Power Cable Fault Locator produced by Goldhome Hipot provides detailed explanations of both testing principles and specific testing methods, enabling test personnel to quickly master field testing techniques and enhance testing efficiency.
HM-A300 full intelligent multi-pulse cable fault tester is catering to the rapid development of industrial-grade power industry solutions and IT era, using the industrial control embedded computer platform system, network service business, USB communication technology for the limitations of the original cable fault tester. Systematization greatly improves the use and utilization of the instrument and the convenient on-site environment operation. It is widely used for the test of various types of power cable fault, cable path, cable buried depth, as well as railway, airport control signal and cable failure precision test. The instrument has three modes of operation: low voltage pulse, pulse current and multiple pulse. The low-voltage pulse mode can be used to measure the distance of cable fault, low resistance and short circuits. The pulse current mode, in combination with the high-voltage signal generator, can be used to measure the distance of the high resistance and the flashover fault. The multi-pulse ranging method can be used to measure the distance of high-resistance and flashover faults of power cables under the cooperation of the high-voltage signal generator and the multi-pulse generator.
Key Features & Advantages
1. Capable of detecting various faults in power cables below 35kV, including open circuits, short circuits, low-resistance faults, high-resistance leakage, and high-resistance flashover faults. Applicable to cables of different voltage levels, cross-sectional areas, media, and materials. Also suitable for railway communication control cables, streetlight cables, and airport signal cables. Can measure the propagation speed of electrical waves in cables of any known length.
2. Three methods for power cable fault location: low-voltage pulse method, pulse current method, and multi-pulse method.
3.Low-voltage pulse automatic testing simplifies detection of open circuits, short circuits, and low-resistance faults. Low-voltage pulse manual testing: simple and intuitive operation.
4. Pulse Current Method: Suitable for distance measurement of high-resistance and flashover faults, with automatic distance measurement capability.
5. Multi-Pulse Method: An improved version of the dual-pulse method. Features clear, easily distinguishable waveforms and achieves high-precision distance measurement through comparison functionality.
6. The test host automatically selects from 5 sampling frequencies (ranging from 6.25MHz to 100MHz) and incorporates adaptive pulse width technology to enhance testing accuracy.
7. This software enables automatic identification and retrieval of low-voltage pulses and multi-pulse waveforms, automatic locking of waveform fault inflection points, and automatic reading and display of fault distances. Dual-cursor movement allows precise fault location within 0.15 meters, enhancing coarse measurement accuracy and reducing waveform errors.
8. 12.1-inch resistive touchscreen with dual stylus/touch operation, suitable for outdoor use in sunlight; powered by lithium battery; engineering plastic housing provides shock and moisture resistance.
9. Waveform storage: Features massive waveform storage capacity.
10. Import/export waveform data via USB interface using a USB flash drive on-site.
11. Provides computer backend management software for managing USB-exported data or online data.
12. Compact size and lightweight design for easy portability.
Technical Parameter
| Working mode | low voltage pulse, pulse current, multiple pulses. |
| recise locating erro | ±0.2m. |
| Sampling frequency | 100MHz, 50MHz, 25MHz, 12.5MHz, 6.25MHz, real-time sampling. |
| Maximum working distance | 60km |
| Test blind zone | 5m |
| Communication interface | USB |
| Power supply | AC 220V±10%, not more than 15W; DC 12V (7AH), not more than 20W. |
| Battery power supply time |
with a fully charged polymer lithium- ion battery, it can work continuously for more than 6 hours (as the battery ages, the continuous use time will be shortened accordingly). |
| Volume | 180mm×300mm×400mm |
| Weight | 6.2kg |
Products Description
I.Whole machine composition
1. Host
2. A low-voltage pulse test lead
3. Four-core aviation inserting multiple pulse guide leads
4. Current Sampler
5. Power charger
6. Instructions
II.Panel Structure
HM-A300 Panel
Terminal Instruction:
1. <Power>: This instrument uses 50Hz, 220V AC power supply.
2. <Indicator light>: The indicator lights are under-voltage indicator, low-voltage pulse indicator, and flash indicator.
Undervoltage indication: red diode, the red light is on when undervoltage, and an alarm sounds.
Low-voltage pulse indication: green diode, the green light is on after starting up, the working state is in the pulse method test state.
Flash indicator: red diode, the red light is on when the working state is in the HV flashover sampling state.
3. <Output socket>: The instrument uses a four-hole aviation socket to test the signal output and input of cable faults.
4. <Output amplitude>: used to adjust the amplitude of input and output pulses.
5. <Switch> key: switch the instrument power.
6. <LCD>: 12.1-inch touch screen, used to display waveforms and various information.
7. <Reset> button: Program refresh button.
8. <USB> interface: It can be connected to the machine and operated at the same time, and the test waveform and test data can be processed, stored, studied, analyzed and printed.
9. <Touch mouse>: It is the same as a general laptop mouse, used to operate the entire system.
III.Wiring Method
If the resistance value of the power cable fault is greater than the characteristic impedance value of the cable, it is regarded as a high-resistance fault (high-resistance leakage fault and high-resistance flashover fault) and can be tested by the multiple pulse method first. Preparations before testing: On site, first integrate G35A high-frequency and high-voltage power supply, HM-A300 multiple pulse generator, HM-A300 fully intelligent multiple pulse cable fault tester, cable fault phase, system grounding wire, cable grounding wire as shown in Figure 1; if the transformer high-voltage power supply is used, connect it as shown in Figure 2.
Figure 1 Wiring diagram for field fault test of multiple pulse method (with HM350 high voltage power supply)
Figure 2 Wiring diagram for field fault test of multiple pulse method (with transformer high voltage power supply)
Products Details
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