Dielectric loss tester manufacturers / automatic dielectric loss tester working principle of dielectric loss tester manufacturers - different frequency dielectric loss tester start measuring high voltage settings to the variable frequency power supply, power inverter with PID algorithm output retarder to adjust to set value, the measurement circuit measured pressure to the power inverter, fine-tune the low pressure, to achieve accurate high-voltage output. According to the forward / reverse wiring set, the measurement circuit is automatically selected according to the test current input and switch range measurement circuit using the Fourier transform to filter out interference, isolated signal fundamental vector operations on standard current and the test current amplitude to calculate the capacity angle difference tgδ. Repeated multiple measurements, sorted, select an intermediate result. The end of the measurement, the measurement circuit to issue the buck instructions variable frequency power supply retarder buck 0. Notes and other considerations, the instrument can only be used in power equipment; grounding terminal should be connected to the grounding grid, the instrument as far as possible in a spacious, secure place. 2 test equipment is disconnected from the running state high-voltage lead into maintenance, and cleaning preliminary insulation test before using the instrument to test, to prevent poor insulation test equipment, the instrument during pressurization in damage. According to the installation of the equipment to determine the kind of wiring, wiring methods and select the appropriate menu option. The right choice according to different devices, the test voltage level, and the corresponding menu options, select the desired voltage. Endanger the safety of the testing process in case of special circumstances, emergency shut off the main power supply. 6 disconnect panel power switch, and disconnect significantly 220V test power supply wiring to change or end of the work; retest repeat the same test equipment, you can press the reset, re-measure, in the last test select Repeat. (7) In order to ensure measurement accuracy, especially when the capacity of small test sample loss, we must ensure that the equipment is the low pressure side (secondary side) good insulation, measuring relative humidity smaller environment. Dielectric loss tester manufacturers - 8 during the large capacitance of the test experiment, the ground of the equipment and the test sample ground should not be on the same ground point to prevent the discharge of the ground the counterattack voltage or current wave affect the instrument's safety. The instrument comes with a step-up device, should pay attention to the high-voltage lead insulation distance and personnel safety; 10, the instrument should be grounded, improper ground may cause the machine to protect or danger. 10 after the start of the instrument, except in special circumstances, do not allow a sudden shutdown power supply, in order to avoid overvoltage damage to the device; 11. Qualified instrument with (HVX) dedicated high-voltage wire factory has been detected, but still away from the body measurements and low-pressure test line (Cx); high-pressure core wire and high voltage shielded cable are not allowed to ground and the low-potential part of the test loop. CX input line core and shield lines are not allowed contact with high-pressure part of the test loop. The instrument should pay attention to moisture, anti-severe vibration. (13) when the interference field, the labor frequency can not be the result of the determination, you should use different frequency measurement, other frequency measurement should be used. 14 When issuing the measurement instructions, longer