Product Introduction:
The Contact Resistance Meter is a high-precision digital switch detection instrument developed by our company in strict accordance with IEC standards and relevant national regulations, leveraging our full technical expertise and advantages.
The contact resistance meter manufactures utilizes sine wave inverter technology and a high-power constant current switching power supply, enabling precise measurement of micro-ohm level contact resistance. It is widely used for measuring the contact resistance and loop resistance of various switches and electrical appliances, as well as the contact resistance of cables, wires, and welds.
Product functions:
1. 600A high-current testing
Supports a maximum DC test current of 600A, enabling contact resistance and loop resistance testing on high-voltage circuit breakers, disconnecting switches, switchgear, and other equipment, more accurately reflecting the actual condition of conductive connection points.
2. Micro-ohm level high-precision measurement
Measurement resolution up to 0.1μΩ, suitable for low resistance and micro-ohm level contact resistance measurement, helping users accurately assess the contact quality of contacts, terminals, and other conductive connection points.
3. Four-terminal precision measurement
Adopts four-terminal (Kelvin four-wire) measurement, effectively reducing the influence of test leads and wiring resistance on measurement results, improving the accuracy and stability of low resistance measurement.
4. Fast testing
Supports a fast test mode, enabling rapid completion of resistance measurement and display of test results, shortening on-site testing time and improving the efficiency of power equipment maintenance and preventive testing.
פרמטרים טכניים
| זרם בדיקה | DC 100A, DC 200A, DC 300A, DC 600A |
| טווח מדידה | 1~1999μΩ |
| טווח מדידה | (1) 0~50mΩ(100A) |
| (2) 0~25mΩ(200A) | |
| (3) 0~16mΩ (300A) | |
| (4) 0~8mΩ (600A) | |
| פתרון הבעיה | 0.1mΩ |
| דיוק מדידה | 0.5%±2d |
| כּוֹחַ | 6000W |
| מצב עבודה | rapidly/30S/1MIN/Continuously |
| ספק כוח | AC220V±10% 50Hz |
| סביבת עבודה | Temperature: -10°C~40°C |
| Humidity: ≤80%RH No condensation |
Product Characteristics:
1、High Test Current: Delivers a large test current that fully meets the requirements of national standards for contact resistance testing.
2、High Output Voltage with Wide Range: Provides high output voltage and a broad test range for versatile applications.
3、Precision Constant Current Source: The test current is sourced from a high-precision, high-current constant current power supply, eliminating the need for manual adjustment and ensuring fast and accurate testing.
4、Four-Terminal Wiring Method: Utilizes a four-terminal wiring configuration to effectively eliminate the influence of test lead resistance on measurement results.
5、Fast Test Speed: Test results are displayed in approximately 8 seconds, enabling efficient operation.
6、User-Friendly Display: Equipped with a 128×64 dot matrix LCD, featuring full English operation and display for customer convenience.
7、Real-Time Printing: Built-in function for real-time printing of test data.
8、Intelligent Power Management: Incorporates smart power management technology, allowing the contact resistance meter supplier to operate in a minimum power state, effectively reducing internal heat generation and conserving energy.
9、Data Storage and Clock Function: Features clock and data storage capabilities, facilitating convenient query and management of test data for users
Application Scenarios：
1. High-voltage circuit breaker testing
Used for measuring the contact resistance of circuit breaker main contacts and conductive loops, determining contact condition and conductive performance.
2. Disconnecting switch testing
Used for measuring the contact resistance of disconnecting switch contacts and connection points, assisting in determining whether equipment connections are reliable.
3. High-voltage switchgear testing
Used for loop resistance testing of switchgear main circuits, applicable to equipment installation, handover testing, and routine maintenance.
4. Preventive testing of power equipment
Used for periodic testing of power equipment in substations, power plants, and other facilities, promptly identifying abnormalities in connection points through contact resistance testing.
5. Cable and conductor connection testing
Used for measuring the connection resistance of cables, conductors, and terminals, verifying the quality of conductive connections.
6. Low resistance testing of industrial equipment
Suitable for resistance measurement of weld points, metal connectors, and other low-resistance connection points.
FAQs:
Q: What is the contact resistance tester mainly used for testing?
A: The contact resistance tester is mainly used for measuring the contact resistance and loop resistance of power equipment such as high-voltage circuit breakers, disconnecting switches, and switchgear. It is also suitable for testing cables, conductors, and other low-resistance connection points.
Q: What factors can affect contact resistance test results?
A: Test results may be affected by factors such as wiring method, contact condition, test current, test lead connections, and the surface condition of the equipment under test. Standardized connection of test leads and testing in accordance with test requirements help obtain stable and reliable test results.
Q: What are the main advantages of the contact resistance tester?
A: The main advantages include high-current testing, micro-ohm level high-resolution measurement, four-terminal measurement, fast testing, data storage, and on-site printing, meeting various low-resistance testing requirements for power equipment.
Q: What low-resistance points can the contact resistance tester detect?
A: It can be used to test circuit breaker contacts, disconnecting switch contacts, switchgear main circuits, terminals, cable connection points, conductor connection points, and other metal conductive connection points.
