One of the phase failure protection circuits for detecting line current
Source: InternetPublisher:拿铁三分糖 Keywords: Protection circuit phase failure protection BSP Updated: 2020/07/27
When a phase failure occurs in the motor, the neutral current of the conductor that disconnects one phase
is zero. Based on this, a
phase failure protection circuit for detecting line current is designed .
The circuit is shown in Figure 4-18. It uses three undercurrent relays
KAl ~ KA3 as protection components.
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