Product Introduction
Wuhan UHV Power Technology Co.,Ltd., is a professional manufacturer and supplier of high-voltage power testing equipment in China.The Clamp-Type Grounding Resistance Measuring Instrument represents a significant advancement over traditional grounding resistance measurement techniques. It is widely used for measuring grounding resistance in industries such as electric power, telecommunications, meteorology, oil fields, construction, and industrial electrical equipment.
When measuring a loop-type earthing system, the clamp-type grounding resistance meter does not require disconnection of the grounding down conductor or the use of auxiliary electrodes, making the testing process safe, fast, and easy to perform.
This instrument is capable of measuring grounding faults that cannot be detected using traditional methods. It is applicable in situations where conventional approaches are ineffective, as the clamp-type grounding resistance meter measures the combined value of the grounding body resistance and the grounding lead resistance.
In addition, the clamp-type grounding resistance meter can also measure the leakage current and neutral line current of the earthing system, providing comprehensive diagnostic capabilities.
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Product functions
Ground resistance measurement: Uses clamp-on method to measure grounding system resistance, enabling rapid inspection of grounding status without disconnecting the ground wire.
Ground current measurement: Measures current in the grounding loop, helping to determine whether the grounding system is operating normally.
Leakage current measurement: Detects leakage current in grounding lines, used to identify potential leakage issues in equipment or circuits.
Neutral current measurement: Measures neutral line current, assisting in troubleshooting abnormal currents in circuits.
Grounding system fault diagnosis: Combines ground resistance, current, and other measurement results to assess grounding system operating status and assist in identifying abnormalities.
Auto-ranging function: Automatically selects the appropriate measurement range based on the parameter being measured, improving on-site measurement convenience.
Over-limit alarm function: Allows setting of alarm thresholds, providing alerts when measured values exceed the set range for rapid abnormality identification.
Interference recognition function: Capable of identifying interference signals present during measurement and providing prompts for abnormal measurement conditions.
Data storage function: Saves measurement data for on-site recording, subsequent review, and test result comparison.
Product Characteristics
1. Advanced Digital Processing: Employs sophisticated algorithms and digital integrated processing technology for enhanced measurement accuracy.
2. Instant Startup: No waiting time for self-check; the instrument is ready for testing immediately upon startup.
3. Compact Handheld Design: Overcomes the bulkiness issues of traditional products, making it more suitable for handheld operation.
4. Streamlined Operation: Features a new design with a 6-key panel for straightforward and efficient operation.
5. Enhanced User Feedback: Equipped with audible and visual alarms, along with interference signal identification and indication functions for improved usability.
6. Expanded Measurement Range: Measures from 0.01 Ω to 1000 Ω, with storage capacity for up to 99 sets of data. Low power consumption ensures a maximum operating current of less than 50 mA.
Technical parameter
| Nguồn cấp | 6VDC(4 no.5 alkaline dry batteries) |
| operating temperature | -10℃-55℃ |
| Độ ẩm tương đối | 10％-90％ |
| LCD | 4-digit LCD digital display, length and width 47×28.5mm |
| clamp table weight (including battery) | 1130g |
| clamp table size | length 275mm, width 85mm, thickness 56mm |
| protection level | double insulation |
| structure characteristics | clamping mode |
| range shift | Tự động |
| external magnetic field | <40A/m |
| External electric field | <1V/m |
| single measurement time | 1 SEC |
| resistance measurement frequency | >1KHz |
| highest resolution resistance measurement | 0,001Ω |
| Resistance measurement range | 0.01-1000Ω |
| * current measurement range | 0-30A（type C） |
| measured current frequency | 50/60Hz |
| stored measurement data | 99units |
| setting range of resistance alarm critical value | 1-199Ω |
| * setting range of current alarm critical value | 1-499mA（type C） |
Application Scenarios
Power systems: Used for ground resistance and ground current testing of grounding systems in substations, distribution stations, and transmission lines, enabling rapid assessment of grounding device operating status.
Communication systems: Used for testing grounding systems in communication base stations, communication rooms, and communication equipment, ensuring grounding reliability.
Building construction: Used for on-site testing of lightning protection grounding, protective grounding, and equipotential grounding systems in buildings.
Industrial equipment: Used for checking grounding conditions of electrical equipment, distribution cabinets, cabinets, and production equipment, promptly identifying grounding abnormalities.
Lightning protection systems: Used for periodic testing and maintenance of lightning protection devices, lightning protection grounding grids, and other grounding systems.
Oil field and energy industry: Used for safety testing of grounding systems for oil field equipment, storage tanks, and related electrical facilities.
Grounding system routine inspection: Suitable for grounding systems already in operation, enabling rapid inspection and fault diagnosis without the need to disconnect grounding conductors.
Equipment maintenance and fault diagnosis: Assists in determining whether there are abnormalities in grounding systems by testing parameters such as ground resistance, ground current, and leakage current.
Frequently Asked Questions
Q: Can it measure ground current?
A: Yes. It can detect current in the grounding loop using the clamp-on method, assisting in determining the operating status of the grounding system.
Q: What is the biggest advantage of this device?
A: It requires no disconnection of grounding conductors, no auxiliary grounding electrodes, provides fast measurement, and can simultaneously perform ground resistance and current parameter testing. It is particularly suitable for on-site testing of in-service grounding systems.
Q: Is the device suitable for rapid on-site troubleshooting of multiple grounding points?
A: Yes. The clamp-on measurement method is easy to operate, does not require frequent disconnection of wires or deployment of auxiliary electrodes, and can improve the efficiency of multi-point inspection.
Q: What are the advantages compared with traditional ground resistance testing methods?
A: The main advantages are simpler operation, fewer on-site wiring requirements, no need to disconnect grounding conductors or deploy auxiliary grounding electrodes, and faster testing speed, making it more suitable for routine inspections and testing of in-service equipment.
