■ Functional features
▲ The instrument adopts complex current method to measure capacitance, dielectric loss and other parameters. The test result has high precision and is easy to realize automatic measurement.
▲ The instrument adopts frequency conversion technology to eliminate the field 50Hz power frequency interference, even in the strong electromagnetic interference environment can also be measured reliable data.
▲ The instrument is easy to operate, the measurement process is controlled by the microprocessor, as long as the appropriate measurement method is selected, the data measurement can be automatically completed under the control of the microprocessor.
▲ Set CVT test function, can realize CVT self-excitation method test, no external accessories, only one measurement, C1, C2 capacitance and dielectric loss all measured.
▲ With reverse wiring low voltage shielding function, in the case of 220kV CVT busbar grounding, C11 can be carried out without disconnecting 10kV reverse wiring dielectric loss measurement.
▲ With high voltage dielectric loss measurement function, can use high voltage transformer or series resonance for more than 10kV dielectric loss test.
■ Technical parameters
▲ Anti-interference index: frequency conversion anti-interference, 200% interference can still achieve the above accuracy
▲ Capacity range:
● Internal high voltage: 3pF ~ 60000pF/10kV 60pF ~ 1μF/0.5kV
● External high pressure: 3pF ~ 1.5μF/10kV 60pF ~ 30μF/0.5kV
● Resolution: up to 0.001pF, 4 significant digits
▲ TG δ range: unlimited, resolution 0.001%, capacitance, inductance, resistance three kinds of automatic identification of samples
▲ Accuracy: Cx:± (reading ×1%+1pF); Tg δ:± (reading ×1%+0.00040)
▲ Test current range: 10μA ~ 1A
▲ Internal high pressure:
● Set voltage range: 0.5 ~ 10kV; Maximum output current: 200mA
● Test frequency:
45, 50, 55, 60, 65Hz single frequency
45/55Hz, 55/65Hz, 47.5/52.5Hz automatic double frequency conversion
● Frequency accuracy: ±0.01Hz
▲ External high pressure:
● Maximum test current 1A, power frequency or frequency conversion 40-70Hz
● Reverse wiring maximum test current 10kV/1A, power frequency or frequency conversion 40-70Hz
▲ CVT self-excitation method low voltage output: output voltage 3 ~ 50V, output current 3 ~ 30A
▲ CVT ratio measurement:
● Variable ratio measurement accuracy: ±(reading ×1%)
● Variable ratio measurement range: 10 ~ 99999
● Phase measurement accuracy: ±0.1°
● Phase measurement range: 0 ~ 359.9°
