Loop Resistance Test

Basic Functions:

Currently, conventional methods are widely used in the power system.QJ44Type double-arm DC bridge measures contact resistance, while the test current of such bridges is onlymALevel, it is difficult to detect the defect of reduced cross-sectional area of the conductor. When measuring the contact resistance of a high-voltage switch's conductive circuit, due to the influence of the oil film and oxidation layer between the contacts, the measured value is several times larger, and it cannot truly reflect the actual contact resistance value.

Therefore, the new Ministry of Power standardsDL/T845.4—2004"General Technical Conditions for Resistance Measurement Devices: Loop Resistance Meters" and the New Version of the Verification RegulationJJG1052-2009"Regulations for the Calibration of Circuit Resistance Meters and Direct Resistance Meters stipulate that the measuring current for contact resistances of switches (isolated), circuit breakers, etc., must not be less than direct current."100ANo Chinese content provided.60SRegulations are in place to ensure accurate test results.

ED0303B-100The human engineering design of the contact resistance tester's operating panel is user-friendly, utilizing high-frequency switching power supplies and digital circuit technology, suitable for measuring the circuit resistance of switching control equipment.

Tested current is in accordance with the DC standard recommended by the national standard.100AAvailable in DC100AThe circuit resistance was directly measured in the case, with the test results displayed on a large LCD screen.LCDDisplay, with features including data storage, output printing, and time setting, and also50AGear options available for users; customizable test duration, with extended set time.599S,Significantly greater than the standard requirements.60SOur company is the sole one in China....No Chinese content provided.0.01μΩ resolution and highly stable contact resistance tester, outperforming imported high current micro-ohmmeters.

Meets the requirements for on-site high-voltage switch maintenance by power and electricity supply departments and circuit resistance testing at high-voltage switch factories.

Technical Features:

High Current:

With the adoption of new switching power supply technology, it can continuously output high currents over extended periods, overcoming the drawbacks of pulsating power supplies with instant current spikes. This effectively pierces the oxidation film on the switch contacts, yielding favorable test results.

High Stability:

Under severe interference conditions, the data behind the liquid crystal screen can remain stable at±1Within a certain range, the readings are stable and have good repeatability.

High Precision:

Utilizing dual high-speed16V-Sigma-DeltaADSampling, new digital signal processing technology, high resolution achieved0.01μΩ is currently the only....No Chinese content provided.0.01μΩ resolution and highly stable contact resistance tester, outperforming imported high current micro-ohmmeters.

Intelligentization:

Imported High-PerformanceCPUThe system automatically switches the range based on signal size during measurement to ensure test accuracy. The over-temperature protection circuit automatically stops the output current when the instrument exceeds the set temperature, ensuring safe operation of the equipment.

High Quality:

All critical components are imported, and the effects of environmental temperature on measurement results are effectively eliminated by the cleverly designed temperature compensation circuit. The use of military-grade connectors enhances vibration resistance.

Powerful Features:

Electric Current Flow50A、100APlease choose freely; the test time is5s~599sOur internal settings can overcome the shortcomings of other similar instruments that cannot set measurement time or have an insufficient continuous working time, far surpassing the performance of other similar instruments.

User-friendly Human-Machine Interface

Rotary mouse for inputting data, convenient and quick; set the instrument's date and time independently; save measurement data in real-time; and print results immediately.

USBForwarded:

ThroughUSBInterface will transfer measured data for storageUThe company has integrated the upper computer software to further analyze and process the measurement data.

Convenience in Use:

Compact and lightweight, easy to carry.

Technical specifications:

Measurement Range 0～2999.9μΩ

No Chinese content provided for translation. Please provide the Chinese content to be translated. Rate 0～99.99，0.01μΩ 100.0～2999.9，0.1μΩ

Test Current DC50A、100ATwo fixed outputs

Measurement Accuracy ±(0.5% rd+2d)

Consecutive Work Hours 5s～599s

Display Format Large-screen Chinese LCD display

Communication Method UDisk rotation saved

Work Power AC220V±10% 50Hz

Complete Machine Power 600W

Large Storage Record 200No Chinese content provided.

Work Environment Temperature-10℃～40Temperature: ℃, Humidity: ≤80%RH

The translation is incomplete. Please provide the full content of the company news to be translated. No Chinese content provided. 360×300×250 mm3

Please provide the Chinese content that needs to be translated into American English. Quantity 8kg(No attachments included.)