Exam 33: Four-Speed Two-Winding 28consequent Pole29 Motor Controller

Compelling relays ensure that the motor starts at the lowest speed.

With a compelling relay, the motor is started at low speed and is then accelerated automatically through successive speed steps until the selected speed is reached.

In a standard starter, before change is made from a higher to a lower speed,___________ .

Multispeed starters are provided with mechanical and electrical interlocking.

With an accelerating relay, the motor can be started only by pressing the low-speed push button.

Four-speed, consequent pole, squirrel cage motors have two reconnectable windings and two speeds for each winding.

When a compelling relay is used,____________ .

A decelerating relay is similar in action to a(n) _______relay.

Mechanical and electrical interlocking avoid the possibility of ______________.

When the starter is equipped with an accelerating relay,_______________ .