1. Performance characteristics
1. This instrument can select the output current value (the maximum output current value is 20A), which is suitable for measuring the inductive DC resistance of transformers, mutual inductors, etc.
2. For large transformers with five-column cores and low-voltage windings connected in a triangle, the instrument can use the high and low voltage series excitation method for testing. The instrument automatically connects the winding's auxiliary magnetic circuit inside, which can quickly and accurately test the DC resistance of the low-voltage winding.
3. This instrument is equipped with a three-phase measurement function to complete the three-phase DC resistance measurement of the star-connected winding once, and automatically calculate the three-phase imbalance rate, which greatly saves measurement time and improves work efficiency. The phase-by-phase test function can also be used to test the transformers with YN and D (Y) connection methods phase by phase until the test is completed.
4. It has a complete protection circuit and an audible discharge alarm, with clear discharge indication to reduce misoperation.
5. The instrument uses a 7-inch color touch screen, the interface display is clear and beautiful, and the test data can be displayed in real time.
6. The instrument can set the Chinese and English versions of the operation interface, which can be configured according to customer requirements.
7. With RS232 communication interface, the test data can be transferred to the background with the host computer control software.
8. With USB interface, the test data can be transferred to the USB flash drive.
9. This instrument has a built-in calendar clock, and can store, read and print 100 sets of test data.
10. The parameter setting is more complete, and the transformer test winding, tap position, test phase, test sample temperature, conversion temperature, etc. can be set.
11. This instrument adopts industrial plastic shell chassis, which is easy to carry and improves service life.
2. Technical indicators
1. Output current: Three-phase test: 10A+10A; 5A+5A; 1A+1A;
Phase-by-phase test: 20A; 10A; 5A; 1A; 200mA;
2. Range: Three-phase test: 10A+10A: 2mΩ～0.5Ω;
5A+5A: 4mΩ～1Ω;
1A+1A: 20mΩ～5Ω;
Phase-by-phase test: 20A: 0.5mΩ～1Ω;
10A: 2mΩ～2Ω;
5A: 4mΩ～4Ω;
1A: 20mΩ～20Ω;
200mA: 100mΩ～100Ω;
3. Accuracy: 0.2%±2 characters;
4. Minimum resolution: 0.1μΩ;
5. Working temperature: -20～40℃;
6. Ambient humidity: ≤80%RH, no condensation;
7. Working power supply: AC220V±10%, 50Hz±1Hz;
8. Instrument volume: Length 428mm*Width 350mm*Height 230mm;
9. Net weight of instrument: 10.2kg
13665279612
