Two-speed fan circuit
Source: InternetPublisher:jikai233 Updated: 2016/07/01
Two-speed exhaust fans driven by pole-changing speed-adjustable motors are widely used in high-rise and underground buildings. They usually run at low speed. When a fire occurs, they can be automatically switched to high-speed operation by manual, fire local control systems or BAS systems. As a For exhaust fan. The circuit is shown in the figure. Latest Control Circuits Circuits
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