What are the main parameter requirements for Variable Frequency Series AC Resonant Test System
1.The Variable Frequency Series AC Resonant Test System with should be equipped with protection devices such as overvoltage(output voltage exceeding the set value),overcurrent,zero position protection,and transient overvoltage generated during sample breakdown.When in abnormal working conditions,the automatic protection device should automatically shut down.
2.The automatic protection device should have sufficient anti-interference ability.When the test equipment is working normally,the automatic protection device should not act.
3.The protective setting value adjustment potentiometer adopts a small hole adjustment method on the panel or other structural methods that are not easy to change the setting value arbitrarily,to avoid the setting value being mistakenly changed during the test process.
4.It should be equipped with a grounding discharge device to ensure the safety of workers.
Variable frequency series resonance measurement system
1.The high-voltage output voltmeter and its voltage divider should use digital meters,and the system measurement error should not exceed±2%.
2.The voltage ratio of the voltage divider should be stable enough within the maximum operating voltage and normal operating temperature range,and its error should be less than±1%of the rated voltage ratio.
3.The output voltage meter and its voltage divider of the excitation transformer should use digital or analog meters,and the system measurement error should not exceed±2%.
4.The output ammeter should use a digital meter,and the system measurement error should not exceed±2%.
5.The output frequency meter of the frequency converter should use a digital meter,and the measurement error should not exceed 1%of the reading;The minimum resolution of the meter reading is 0.1Hz;Within the range of 25℃±10℃,the frequency display instability for 15 minutes shall not exceed 0.1Hz.
6.Resonance display instrument or automatic tuner.
Continuous adjustability and zero position locking of high-voltage output voltage through variable frequency series resonance
The high voltage output voltage should be continuously and smoothly adjustable,and can be boosted from zero.The knob for adjusting the output high voltage should have a zero position lock to prevent sudden high voltage addition to the test sample when the adjustment knob is not at zero position.
Variable frequency series resonance 1.1 times rated output voltage test
Using a simulated sample capacitor,tune it up to 1.1 times the rated output voltage and withstand voltage for 10 minutes.At this time,there should be no obvious discharge sound inside the high-voltage insulation(or metal)cylinder of the reactor.
2.The automatic protection device should have sufficient anti-interference ability.When the test equipment is working normally,the automatic protection device should not act.
3.The protective setting value adjustment potentiometer adopts a small hole adjustment method on the panel or other structural methods that are not easy to change the setting value arbitrarily,to avoid the setting value being mistakenly changed during the test process.
4.It should be equipped with a grounding discharge device to ensure the safety of workers.
Variable frequency series resonance measurement system
1.The high-voltage output voltmeter and its voltage divider should use digital meters,and the system measurement error should not exceed±2%.
2.The voltage ratio of the voltage divider should be stable enough within the maximum operating voltage and normal operating temperature range,and its error should be less than±1%of the rated voltage ratio.
3.The output voltage meter and its voltage divider of the excitation transformer should use digital or analog meters,and the system measurement error should not exceed±2%.
4.The output ammeter should use a digital meter,and the system measurement error should not exceed±2%.
5.The output frequency meter of the frequency converter should use a digital meter,and the measurement error should not exceed 1%of the reading;The minimum resolution of the meter reading is 0.1Hz;Within the range of 25℃±10℃,the frequency display instability for 15 minutes shall not exceed 0.1Hz.
6.Resonance display instrument or automatic tuner.
Continuous adjustability and zero position locking of high-voltage output voltage through variable frequency series resonance
The high voltage output voltage should be continuously and smoothly adjustable,and can be boosted from zero.The knob for adjusting the output high voltage should have a zero position lock to prevent sudden high voltage addition to the test sample when the adjustment knob is not at zero position.
Variable frequency series resonance 1.1 times rated output voltage test
Using a simulated sample capacitor,tune it up to 1.1 times the rated output voltage and withstand voltage for 10 minutes.At this time,there should be no obvious discharge sound inside the high-voltage insulation(or metal)cylinder of the reactor.
