Honeywell 51304516-250 MC-PSTX03
¥4,012.00
Description
Honeywell 51304516-250 MC-PSTX03
一些因素会导致测得的电压不同。
首先,电阻较低的电表会降低测量电压(回顾串联电路分压器的概念)。
如果输出端子实际接通,电压将为120伏,即使线圈是坏的。在确定故障之前,确保终端处于关闭状态。
如果线圈正常工作,电阻将比仪表低得多,不超过几百欧姆。在这种情况下,根据数据手册,即使绝对最大漏电流也应小于0.5 mA,因此对于500欧姆的线圈,压降应小于0.25。在线圈良好的情况下,故障排除过程更接近继电器输出的预期。
Honeywell 51304516-250 MC-PSTX03
如果测量值非常重要,可以将一个电阻与线圈并联。如果该值比线圈高10倍左右(可能为5k至10k欧姆),则不会对电路的电流消耗产生很大影响,但电阻仍将比三端双向可控硅开关本身低得多,因此当端子断开时,开路线圈的测量电压将更接近于0。
If the measured value is very important, a resistor can be connected in parallel with the coil. If the value is about 10 times higher than the coil (possibly 5k to 10k ohms), it will not have a significant impact on the current consumption of the circuit, but the resistance will still be much lower than the three terminal bidirectional thyristor switch itself. Therefore, when the terminal is disconnected, the measured voltage of the open circuit coil will be closer to 0.
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