Troubleshooting Induction Motors
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
seminar surveyer
Active In SP
**

Posts: 3,541
Joined: Sep 2010
#1
02-10-2010, 05:00 PM



.pdf   Troubleshooting Induction motors.pdf (Size: 203.24 KB / Downloads: 80)

Abstract:
The keys to successful motor operation include a total understanding of the application, then choosing the proper type of motor for the application. This must then be followed by the proper installation – mounting, coupling, and a total understanding of the motor surroundings or environment. Of course, for continued success proper maintenance of the motor must also be performed. Many problems could be avoided if the application and environment were understood, while others may be caused by a changing environment in which the motor operates. In addition, some are due to choosing the wrong motor for the application or defects within the motor itself. This paper examines the most common mechanically or electrically originated motor problems and their preventative action.

INTRODUCTION

TROUBLE with a motor, like trouble with any rotating machinery, ranges – depending on the situation – from aggravation to crisis. Certain problems seem to reoccur more frequently than others. Some problems could be avoided if the application and environment were understood, while others may be caused by a changing environment in which the motor operates, and, of course, some are due to the motor itself. These problems include the following.
??Improper Voltage.
??Motor has inadequate torque to drive the load.
??Motor takes too long to start.
??Overload or instantaneous trip.
??Overload relays take the motor off during full load operation.
??Unsatisfactory vibration.
??Bearing problems.
Reply
seminar ideas
Super Moderator
******

Posts: 10,003
Joined: Apr 2012
#2
25-06-2012, 01:50 PM

TROUBLE SHOOTING


.docx   TROUBLE SHOOTING.docx (Size: 19.04 KB / Downloads: 33)

1) PROBLEM

In nhdc the water level is always low because maximum water is used in punasa hydro power plant, due to which all 8 turbines does not work at a time, so we could not get sufficient power. Therefore for starting we have to take power from near power stations.
1) SOLUTION
To gain sufficient power we should construct a thermal power plant near n.h.d.c. omkareshwar. Otherwise the water of river kaaveri must be used in omkareshwar dam.
2) PROBLEM
The loss in power is very high because maximum equipment used are mechanical, due to which friction increases in equipment’s. so the maintenances cost increases.
2) SOLUTION
The maximum electrical and electronic equipments should be used bu replacing the mechanical equipments.
3) PROBLEM
The power generated in omkareshwar dam is transferred to other cities but is not used in dam and omkareshwar. So we buy energy from other cities, which increases the cost of energy.
3) SOLUTION
The energy used in omkareshwar and dam must be solar energy, wind energy, bio-gas energy
4) PROBLEM
The oil used in transformer has to be changed in every 6 months or 8 months because the generation quality is very poor.
4) SOLUTION
The oil used must be of high viscosity so that the generation quality increases.
5) PROBLEM
Since due to the river the distance between the poles is large and the sag increases which result in power loss.
5) SOLUTION
The bridge construction should be of high quality and the poles should be fitted on the bridges itself.
6) PROBLEM
All the equipments, equipment structure, JBs, MOM box etc. are provided with double earth and connected to ground mat using 80 X 6 mm size galvanised earth strip

6) SOLUTION

Local earth mat of size 1.5M X 1.5M made of MS strip size 50 X 6 mm is provided near MOM box of all the isolators and earth switches for the safety of working personnel. The local earth mat is also connected with the ground mat.

7) PROBLEM

Distance Main - I Numerical Relay REL 521
Main - II Static Relay LZ 96
Power Swing Block Included in REL 521 and LZ 96 relay
Over voltage Stage - I (In built in REL relay)
Stage - II (RXEG21 Relay - One for each phase)

7) SOLUTION

The protection and relay panels installed in the switchyard control room covers all 04 outgoing line feeders bays, Bus coupler bay, transfer bus bay and the bus bars of switchyard.

8) PROBLEM

In electrical engineering, isolated-phase bus, also known as Phase-isolated Bus (PIB) in some countries, is a method of construction for circuits carrying very large currents, typically between a generator and its step-up transformer in a steam or large hydroelectric power plant. Each phase current is carried on a separate insulator, enclosed in a separate grounded metal housing.

8) SOLUTION

Conductors are usually hollow aluminum tubes or aluminum bars, supported within the housing on porcelain or polymer insulators. The metal housings are electrically connected so that induced current, nearly of the magnitude of the phase current, can flow through the housing, in the opposite direction from the phase current.
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  smps troubleshooting in hindi jaseelati 0 66 24-01-2015, 01:08 PM
Last Post: jaseelati
  Why Switched Reluctance Motors? study tips 0 255 27-08-2013, 04:16 PM
Last Post: study tips
  LINEAR MOTORS pdf study tips 0 322 21-05-2013, 12:36 PM
Last Post: study tips
  INDIRECT VECTOR CONTROL OF INDUCTION MOTOR USING FUZZY LOGIC CONTROLLER seminar tips 0 510 14-02-2013, 04:25 PM
Last Post: seminar tips
  ULTRASONIC MOTORS pdf project girl 0 329 04-02-2013, 10:18 AM
Last Post: project girl
  AIR MOTORS PPT project girl 0 503 23-01-2013, 12:57 PM
Last Post: project girl
  Fabrication of Forced Induction System for IC engines at Low speeds seminar tips 0 342 03-01-2013, 10:28 AM
Last Post: seminar tips
  SWITCHED RELUCTANCE MOTORS ppt project girl 0 307 20-12-2012, 06:20 PM
Last Post: project girl
  A Seminar on Doubly Fed Induction Generators(DFIG) PPT project girl 0 1,021 24-11-2012, 02:04 PM
Last Post: project girl
  doubly-fed induction generator (DFIG) seminar tips 0 330 20-10-2012, 04:51 PM
Last Post: seminar tips