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Seminar Content

Motor types

Establish cause of failure

Generator Types

Induction motor

     Squirrel cage type

          Fabricated bar rotor

          Die-cast aluminum rotor

     Wound rotor motor

          Rotor resistor speed control

          Rotor voltage speed control

Synchronous

     High-speed solid-rotor

     Laminated rotor, copper cage

     Solid steel rotor - pole caps

Generator Types

Establish cause of failure

Generator Types

High-speed, solid rotor, turbo

Low-speed, hydro type

Doubly-fed wind generators

Establish cause of failure

Establish cause of failure

Establish cause of failure

Routine repairs

Motor Rewind Specifications

Establish cause of failure

Motor Rewind Specifications

Motor Rewind Specifications

Motor Rewind Specifications

Sample specs 2300 & 4000 v

Sample specs - 6.6, 13.3 kV

Sample spec - 600v motor 

MRX forms

LEMUG motor rewind spec

Shop Traveler

Quality Control Management

Economics – Rewind vs New

Limiting motor temp. rise

Motor Rewind Specifications

Motor Rewind Specifications

  What do the standards say?

Vent. pattern on winding temp.

Rotor temp. rise during starting

Calc. accel. time for high WR2

Stator insulation systems

Stator insulation systems

Stator insulation systems

Wire insulation

Turn insulation

Ground insulation

Types of insulation systems

     VPI insulation

     Resin-rich insulation

     Non-VPI or dry insulation

Resin properties

Stator insulation systems

Stator insulation systems

Helical coil bond strength

High DC voltage resistivity

Good for high temp. AC volts

Thixotropy used for

     No run-out after impregnation

Coil transpositions

Stator insulation systems

Coil transpositions

Standard Roebel transposition

540 degree Roebel

Twisted-turn transposition

Group transposition

Coil Structure

Coil redesign example

Coil transpositions

Brick construction

Standard construction

Coil redesign example

Coil redesign example

Coil redesign example

Current density - flux density

Void concern – Paschens Law

Choice of number of circuits

Equalizer connections

Unbalanced magnetic pull

Types of windings

Coil redesign example

Coil redesign example

  

Integral slot windings

Fractional slot windings

Interspersed windings

Wave windings

Lap windings

1 & 4 connection

1 & 7 connection

2-speed, single winding types

PAM windings

Various connection diagrams

Making brazed connections

Making brazed connections

Making brazed connections

Current density

Making brazed connections

Making brazed connections

Amperes per square inch

Circular mil per amp

Coil manufacturing

Making brazed connections

Winding a motor stator

Winding a motor stator

Insulation temp qualification

Winding a motor stator

Insulation temp qualification

Insulation temp qualification

Insulation temp qualification

Thermal cycling test

Insulation temp qualification

Insulation temp qualification

Motor losses & efficiency

Motor losses & efficiency

Motor losses & efficiency

Input/output

Segregated Losses

Retardation

Load Testing

Dynamometer

Back-to-back

Dual frequency

Forward stall

Coil and winding failures

Motor losses & efficiency

Motor losses & efficiency

Coil and winding tests

Motor losses & efficiency

Repair shop test capabilities

Conductor to ground tests

High frequency tests

Repair shop test capabilities

Repair shop test capabilities

Repair shop test capabilities

Winding resistance

Insulation resistance

Polarization index

Surge test

AC/DC hipot

Reduced voltage starting

Operation at full speed, N.L.

Other tests

Repair shop test capabilities

Stator core construction

Winding analyzers

     Baker

     All Test Pro

     PDMA

     Partial discharge, Iris/Doble

Broken rotor bar tests

Stator core construction

Repair shop test capabilities

Stator core construction

Core steel components

Stator core testing

Rotor Construction; copper vs. aluminum windings

Rotor Construction; copper vs. aluminum windings

Commercial core tester

Loop test

El Cid

Rotor Construction; copper vs. aluminum windings

Rotor Construction; copper vs. aluminum windings

Rotor Construction; copper vs. aluminum windings

Bearings

Rotor Construction; copper vs. aluminum windings

Lubrication – Oil (additives, viscosity), grease types,

Guide

Thrust

Sleeve

Anti-friction

Lubrication – Oil (additives, viscosity), grease types,

Lubrication – Oil (additives, viscosity), grease types,

Lubrication – Oil (additives, viscosity), grease types,

Bearing failure causes, cures

Lubrication – Oil (additives, viscosity), grease types,

Bearing failure causes, cures

Motor application

Lubrication – Oil (additives, viscosity), grease types,

Bearing failure causes, cures

Operation and environment

Operation and environment

Operation and environment

On-line protection/monitoring

Maintenance strategy

Operation and environment

Operation and environment

Corrective

Preventative

Predictive

Tired

Trending

Root cause analysis

Root cause analysis

Root cause analysis

Are your customers raving about you on social media? Share their great stories to help turn potential customers into loyal ones.

TECO Westinghouse

Root cause analysis

Root cause analysis

Shop Tour

API - Nema - IEEE 841 Comparison 

Vibration

“Wall of Shame” – Hilarious