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High-voltage motor one-phase overload protection circuit b

Source: InternetPublisher:super_star Keywords: Protection circuit piezoelectric motor high voltage Updated: 2020/02/24

49. High<strong>piezoelectric</strong> motor one-phase overload<strong>protection circuit</strong>a.gif

The so-called high-voltage motor generally refers to a motor with a rated voltage of i~iokV , and the capacity is generally above 150kW . In order to ensure safe operation, relay protection devices need to be used for protection. The one-phase, one-relay overload protection circuit for     high-voltage motors is shown in Figure 4-49.     In the figure, TA is the current transformer. KA is the overcurrent relay, KS is the signal relay, QF is the circuit breaker, and YR is the circuit breaker tripping coil.






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