Refer to the circuit shown in Figure 37–1. A worker reports that the sump tank is overflowing, the wound rotor motor powering the pump has not started, and the alarm has not sounded. Which of the following could NOT cause this problem? a. The circuit breaker supplying three-phase power to the circuit is open. b. Control switch CS is open. c. Float switch FS1 is open. d. The control transformer fuse is open. Fig. 37–1 Wound rotor motor controlled by float switches.

BuyFind

Electric Motor Control

10th Edition
Herman
Publisher: CENGAGE L
ISBN: 9781133702818
BuyFind

Electric Motor Control

10th Edition
Herman
Publisher: CENGAGE L
ISBN: 9781133702818

Solutions

Chapter 37, Problem 4SQ
Textbook Problem

Refer to the circuit shown in Figure 37–1. A worker reports that the sump tank is overflowing, the wound rotor motor powering the pump has not started, and the alarm has not sounded. Which of the following could NOT cause this problem?

a. The circuit breaker supplying three-phase power to the circuit is open.

b. Control switch CS is open.

c. Float switch FS1 is open.

d. The control transformer fuse is open.

Chapter 37, Problem 4SQ, Refer to the circuit shown in Figure 371. A worker reports that the sump tank is overflowing, the

Fig. 37–1 Wound rotor motor controlled by float switches.

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