| Darui Electric recommendsOn-Resistance Tester Technical Specifications Test Current: 0.2A, 1A, 5A, 10A four ranges Test Range: 0.2 A 10 Ω ～ 100Ω 1A 100mΩ ～ 20Ω 5A 10mΩ ～ 4Ω 10A 1mΩ ～ 2Ω Accuracy: ±(Reading×0.2%+2 digits) Maximum Resolution: 0.1μΩ Operating Temperature: -5～40℃; Ambient Humidity: ≤90%RH, non-condensing Power Supply: AC220V±10%, 50Hz±1Hz Dimensions: 390×280×200mm Weight: 7Kg (excluding test leads) Performance Features of On-Resistance Tester The instrument has large output current, wide measurement range, and easy operation; The instrument has a complete back EMF protection function, audible discharge alarm, clear discharge indication, reducing misoperation; The instrument is equipped with a printer to print test data at any time; The instrument has a real-time clock, and can save and print together with test records, convenient for users to save and review; The instrument can permanently store 200 test records internally (expandable), and can also use a USB flash drive to store data for easy import into a computer for processing. The instrument features wide applicable temperature, high accuracy, shock resistance, anti-interference, small size, light weight, and portability. Safety Measures for On-Resistance Tester Before using this instrument, be sure to read this manual carefully. The operator of the instrument should have general knowledge of electrical equipment or instruments. This instrument can be used indoors and outdoors, but should avoid rain, corrosive gases, excessive dust, high temperature, direct sunlight, etc. The instrument should avoid severe vibration. Maintenance, care, and adjustment of the instrument should be carried out by professionals. After testing, be sure to wait until the discharge alarm sound stops before turning off the power and removing the test leads. During the test, do not move the test clips and power supply lines. On-Resistance Tester The reliable and effective connection between the grounding down conductor of power equipment and the grounding grid is the fundamental guarantee for the safe operation of the equipment. The grounding down conductor is the connecting part between the power equipment and the grounding grid. During long-term operation of power equipment, the connection point may be affected by factors such as moisture, resulting in node corrosion or even fracture, causing the resistance at the connection point between the grounding down conductor and the main grounding grid to increase, thus failing to meet the requirements of power regulations, posing safety hazards during equipment operation, and in severe cases, causing equipment to lose ground. Our company has developed a series of grounding down conductor continuity testers using our own technical advantages. This instrument adopts new power supply technology, featuring small size, light weight, large output current, and automatic adjustment according to the load. The whole machine is controlled by a single-chip microcomputer, automatically completing self-check, data processing, display, printing, and other functions, with automatic discharge and discharge indication functions. The instrument has high test accuracy and easy operation, enabling rapid measurement of grounding resistance. |
