High-quality transformer on-load tap-changer tester manufacturer 100 test
2021-11-21 06:06:24
use:
Transformer on-load tap-changer tester is mainly used for waveform analysis and parameter test of on-load tap-changer of power transformer. It is possible to measure the transition waveforms of on-load tap-changers with windings and transformers without windings, and automatically analyze the transition time, transition resistance and different phases of three phases.
When the phase of the three phases exceeds a certain range, a large phase-to-phase circulation occurs. In a very short period of time, one contact has to bear the current of the two branches, exceeding the current it can withstand, and arcing during the switching process. , The switch is burned out; The transition resistor has abnormal conditions (one is the transition resistance fracture; the second is the abrupt erosion of the moving and static contacts of the switch, and the contact surface is heavily worn; the third is the poor connection of the transition resistor); the static and dynamic contacts are in the process of pressure regulation , may form a vicious circle, it is very likely to cause transformer tripping and other sudden changes in the operation; abnormal transition time, such as a long time before the three-phase bridge, it shows that the rapid mechanism of energy storage spring aging, slower speed. General transformer on-load tap-changer phase difference, dual resistance ≤ 2ms, four resistors ≤ 5ms; and autotransformer on-load tap-changer phase difference is relatively large; generally more than 100 milliseconds is normal.
Technical indicators:
1, three-phase constant current output are 1A
2. Measurement of transition time: accuracy 0.1ms
3, the measurement of transition resistance: accuracy 0.1Ω ± 5% R
4, the transition resistance measurement range: ≤ 25Ω
5, transition time measurement range: <120ms
6, three identical period: accuracy 0.1ms
7. Display three-phase waveform: accuracy 0.3ms
8, the ambient temperature: -10 °C ~ 50 °C
9, the working power: AC220V ± 10% 50HZ
10. Display mode: LCD320×240 large-screen liquid crystal display 11. Instrument volume: 360mm×260mm×150mm
12, weight: 4.5kg
Transformer on-load tap-changer tester is mainly used for waveform analysis and parameter test of on-load tap-changer of power transformer. It is possible to measure the transition waveforms of on-load tap-changers with windings and transformers without windings, and automatically analyze the transition time, transition resistance and different phases of three phases.
When the phase of the three phases exceeds a certain range, a large phase-to-phase circulation occurs. In a very short period of time, one contact has to bear the current of the two branches, exceeding the current it can withstand, and arcing during the switching process. , The switch is burned out; The transition resistor has abnormal conditions (one is the transition resistance fracture; the second is the abrupt erosion of the moving and static contacts of the switch, and the contact surface is heavily worn; the third is the poor connection of the transition resistor); the static and dynamic contacts are in the process of pressure regulation , may form a vicious circle, it is very likely to cause transformer tripping and other sudden changes in the operation; abnormal transition time, such as a long time before the three-phase bridge, it shows that the rapid mechanism of energy storage spring aging, slower speed. General transformer on-load tap-changer phase difference, dual resistance ≤ 2ms, four resistors ≤ 5ms; and autotransformer on-load tap-changer phase difference is relatively large; generally more than 100 milliseconds is normal.
Technical indicators:
1, three-phase constant current output are 1A
2. Measurement of transition time: accuracy 0.1ms
3, the measurement of transition resistance: accuracy 0.1Ω ± 5% R
4, the transition resistance measurement range: ≤ 25Ω
5, transition time measurement range: <120ms
6, three identical period: accuracy 0.1ms
7. Display three-phase waveform: accuracy 0.3ms
8, the ambient temperature: -10 °C ~ 50 °C
9, the working power: AC220V ± 10% 50HZ
10. Display mode: LCD320×240 large-screen liquid crystal display 11. Instrument volume: 360mm×260mm×150mm
12, weight: 4.5kg
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