DS200DTBDG1ABB 为您节约成本 替您省钱

LeCroy-LT344
1756-IA32
2711-T10G8
6181P-12TP2KH
MVME104
2711-K6C5L1
2711-T10G1L
3HAC8304-1
IC755CSS12CDB-BG
Y-1003-1H00AA
1756-l551
1326AB-B730E-M2L

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描述

电动机长期超载运行、其绕组温升超过允许值,绕组的绝缘材料就会变脆,电动机的寿命就会减少,严重时甚至会损坏电动机。过载电流越大,达到允许温升的时间越短。常用的过载保护元件是热继电器。热继电器可以满足这样的要求:当电动机在额定电流下运行时,电动机的温升为额定温升,热继电器不会动作,在过载电流较小时,热继电器要经过较长时间才会动作,过载电流较大时,热继电器会在较短时间内动作。

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