Loop resistance tester manufacturers / loop resistance tester Overview loop resistance tester manufacturers - 200A loop resistance tester Overview ago, the power system commonly used in conventional QJ44 arms DC bridge measuring transformer coil DC resistance, high voltage circuit breaker contact resistance, such bridge test current mA level only, it is difficult to find the transformer coil conductive circuit conductor cross-sectional area to reduce the defects. First, as outlined previously, the power system commonly used conventional QJ44 arms DC bridge measuring transformer coil DC resistance, the contact resistance of the high-voltage circuit breaker, and the type of bridge IS mA test current level is difficult to find conductive transformer coil The loop conductor cross-sectional area to reduce the defects. Measuring the conductivity of the high-voltage switch circuit contact resistance, due to the impact of the oxide layer between the film and the static and dynamic contact measurement deviation to cover up the real value of the contact resistance. Therefore, the Ministry of Electric Power Standard SD301-88 AC 500KV electrical equipment the handover and prevention testing procedures and the new version of "electrical equipment preventive testing procedures for measuring current circuit breakers, disconnectors contact resistance is not less than the DC 100A provision to ensure that accuracy. The loop resistance tester, micro-chip control, humane Chinese interface, it is the contact resistance, loop resistance measurement of special equipment for switching control equipment; the test current national standard GB763 recommended 100A/200A/300A/600A DC, 100A/200A/300/600A current (Test Selection gear) case directly measured loop resistance or contact resistance, the first test set!!!, the first test current break automatically identify!!! using liquid crystal display value and testing the resistance value of the test current can be printed out 232 interface. The instrument measurement accuracy, stable performance, easy to operate. For electricity, the electricity sector field high-voltage switchgear maintenance and high voltage switch factory loop resistance testing requirements. Loop resistance tester manufacturers - Second, technical performance and features, measuring range :1-2000μΩ resolution to: 1μΩ or 0.1μΩ2 of measurement current: DC 100A/200A/300A/600A, (convertible), measurement accuracy: 0.5 % ± 5 words: large-screen character LCD 5, power: AC220V50Hz6, the maximum output voltage: DC10V7 standard output current: DC100A/200A/300A/600A8 test current 100A/200A (150A/300A) field conversion (corresponding models). 9, the local voltage / current line, regardless of the direction of any wiring. 10, the test time setting range :6-99S11, the first test current break automatically recognized. Loop resistance tester manufacturers / loop resistance tester Overview