5A26458G05  继电器模组

【产品详情】

 继电器模组1、测线圈电阻：可用表R×10Ω档测量继电器线圈的阻值，从而判断该线圈是否存在着开路现象。继电器线圈的阻值和它的工作电压及工作电流有非常密切的关系，通过线圈的阻值可以计算出它的使用电压及工作电流。 2、测触点电阻：用表的电阻档，测量常闭触点与动点电阻，其阻值应为0；而常开触点与动点的阻值就为无穷大。由此可以区别出那个是常闭触点，那个是常开触点。 3、测量吸合电压和吸合电流：找来可调稳压电源和电流表，给继电器输入一组电压，且在供电回路中串入电流表进行监测。慢慢调高电源电压，听到继电器吸合声时，记下该吸合电压和吸合电流。为求准确，可以试多几次而求平均值。测量释放电压和释放电流：也是像上述那样连接测试，当继电器发生吸合后，再逐渐降低供电电压，当听到继电器再次发生释放声音时，记下此时的电压和电流，亦可尝试多几次而取得平均的释放电压和释放电流。一般情况下，继电器的释放电压约在吸合电压的10～50%，如果释放电压太小（小于1/10的吸合电压）时则不能正常使用了，这样会对电路的稳定性造成威胁使工作不可靠。

5A26458G05  继电器模组

【英文介绍】

 Relay module 1, measuring coil resistance: use the table R×10Ω to measure the resistance value of the relay coil, so as to determine whether there is an open circuit phenomenon in the coil. The resistance value of the relay coil has a very close relationship with its working voltage and working current, and its working voltage and working current can be calculated through the resistance value of the coil. 2, measure the contact resistance: with the resistance of the table, measure the normally closed contact and moving point resistance, the resistance value should be 0; The resistance of the normally open contact and the moving point is infinite. So you can tell that one is a normally closed contact and that one is a normally open contact. 3, measure the suction voltage and suction current: find the adjustable voltage regulator power supply and ammeter, input a group of voltage to the relay, and in the power supply loop into the ammeter for monitoring. Slowly turn up the power supply voltage. When you hear the relay closing sound, record the closing voltage and current. For accuracy, try the average several times. Measure the release voltage and release current: It is also connected to the test as above. When the relay draws, then gradually reduce the supply voltage. When the release sound of the relay occurs again, record the voltage and current at this time, or try several times to obtain the average release voltage and release current. Under normal circumstances, the release voltage of the relay is about 10 ~ 50% of the pull voltage, if the release voltage is too small (less than 1/10 of the pull voltage), it can not be used normally, which will threaten the stability of the circuit and make the work unreliable.

5A26458G05  继电器模组

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