Answered: THREE-PHASE LINE L1 L3- DISCONNECT…

Engineering

Electrical Engineering

THREE-PHASE LINE L1 L3- DISCONNECT SWITCH PRESSURE SWITCH STARTER THREE- PHASE MOTOR Fig. 1-3

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter14: Phase Failure Relays

Section: Chapter Questions

Problem 2SQ: What are the hazards of phase failure and phase reversal?

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Concept explainers

Motor Control Wiring Method

Motor control wiring refers to the wiring of various components of a motor and links it to the controller. The wiring diagram shows the connection points of wires to all the components and the main circuit. The motor control wirings can also be represented with the help of line diagrams. Line diagrams are also known as schematic diagrams or elementary diagrams. The line diagrams show the basic operational circuit of motor control. The control circuit is a type of circuit that has a very low voltage or low current which controls large voltage and currents that supply power to the devices and equipment. The single-phase and three-phase AC squirrel cage induction motors require some type of control circuit to initiate a start function or a stop function.

Question

In the conduit diagram shown in Figure 1–3, determine how many wires are in each conduit between each piece of equipment. Identify each wire terminal connection and the quantity of wires, as shown in the example, above the disconnect switch.

THREE-PHASE LINE
L1
L3-
DISCONNECT
SWITCH
PRESSURE
SWITCH
STARTER
THREE-
PHASE
MOTOR
Fig. 1-3

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