Before using power cables, a series resonance test must be conducted. At the same time, the complete set ofvariable frequency series resonance test equipmentalso has corresponding protection functions. What is the protection function of the complete set ofvariable frequency series resonance test equipment?
Flashover protection: When the tested object experiences a discharge fault, the device will quickly cut off the output voltage and disconnect the power supply. The load of the high-voltage circuit will be released through the intermediate boosting transformer, without causing overvoltage or affecting other equipment. The 'flashover fault' will be displayed on the screen of the console.
Overvoltage protection: The complete set of frequency conversion series resonance test equipment can set the test voltage to prevent the test voltage from rising due to external reasons; When the test voltage exceeds the set value, the console will automatically cut off the cycle and prompt the screen with a "voltage fault".
Overcurrent protection: Short circuit occurs during the test process. The control box quickly cuts off the power and prompts the "current fault" on the screen.
Internal protection of equipment: When the internal components of the equipment are damaged, quickly cut off the thyristor on the DC circuit and cut off the DC power supply. Cut off the AC power supply again to prevent the fault from further escalating.
Quick circuit breaker protection: When the control circuit is short circuited, the main power switch is an air switch with quick circuit breaker function, which can cut off the fault; Start zero position protection: When starting the control box, the output terminal always maintains zero position without pulse signal or voltage output. When the test voltage approaches the test voltage (usually 90% of the test voltage), it is forbidden to adjust the inductance to prevent excessive voltage damage to the test product during inductance adjustment.
Overload protection: When the output current exceeds the set current, the control box automatically shuts off the output, and there is a corresponding prompt at this time.
Power failure protection: When the power supply suddenly loses power, the complete set of variable frequency series resonance test equipment can use the remaining power in the circuit to timely turn off the output signal, ensuring the safe shutdown of the system.
Disharmony protection: When the testing system loses resonance due to internal defects causing changes in the parameters of the test object. The console automatically shuts down the output.
Transportation seismic protection: The bottom of the control box is designed with seismic disc springs to cushion the road caused by uneven vibration.
The protection function of the complete set ofvariable frequency series resonance test equipmentcan effectively protect the safety of the equipment during operation. Electrical workers need to be proficient in the testing methods and strictly follow the instructions to conduct the tests.
