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Test method for good price and quality relay HKE
Categories:
relay HKE
Source:
Release time:
2022-06-13
①Measure the contact resistance: Use the electrical barrier of the multimeter to measure the resistance of the normally closed contact and the moving point, the resistance value should be 0; and the resistance of the normally open contact and the moving point is infinite. From this, it can be distinguished which of the good price and quality relay HKE is a normally closed contact and which is a normally open contact.
②Measuring the coil resistance: You can measure the resistance of the HKE coil of the good price and quality relay HKE with a multimeter R×10 to determine whether the coil has an open circuit.
③Measure the pull-in voltage and pull-in current: Use an adjustable regulated power supply and an ammeter to input a set of voltages to the good price and quality relay HKE, and connect an ammeter in series to the power supply loop for monitoring. Slowly increase the power supply voltage, and when you hear the sound of good price and quality relay HKE pull-in, record the pull-in voltage and pull-in current. For accuracy, try averaging multiple times.
④Measure the release voltage and release current: It is also a connection test as above. When the good price and quality relay HKE is pulled in, gradually reduce the power supply voltage. When the good price and quality relay HKE releases the sound again, write it down The voltage and current at this time can also be tried many times to obtain the average release voltage and release current. Under normal circumstances, the release voltage of good price and quality relay HKE is 10%~50% of the pull-in voltage. If the release voltage is larger (less than 1/10 of the pull-in voltage), it cannot be used normally, which will affect the stability of the circuit. Create a threat and make work unreliable.
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