Guia para o teste de motores em BT

MEGGER

Guia para o teste de motores em BT

Publicado: 28 de agosto de 2019 · Categoria: Cadernos técnicos

Deste documento

Guide to low voltage motor testing Contents Contents Introduction 5 Motor types 6 DC Motor 6 DC Motor Types Series; Shunt; Compound; Permanent Magnet 6 DC Motor Types - Series 7 DC Motor Types - Shunt 8 DC Motor Types - Compound 8 DC Motor Types - Permanent Magnet 9 Advantages of a DC motor 10 AC Motor 10 AC Motors Types 10 Star Configuration 11 Delta configuration 12 Star vs Delta configuration 12 Why perform Motor Tests? What problems create the need for a test? 13 13 Testing and Diagnostics 14 Trending of test data 17 Megger Baker MTR105 The Tests 18 Insulation resistance 19 Spot or Timed insulation resistance test 20 Polarisation Index (PI) 21 Dielectric Absorption Ratio (DAR) 22 Temperature correction 24 Guard Terminal 25 Three phase test 28 Voltmeter 28 Phase rotation 28 Continuity 28 Diode test 29 2 Guide to Motor testing www.megger.com Contents Digital Low Resistance Ohmmeter (DLRO) 29 Motor Direction of Rotation test 30 Inductance 32 Capacitance 32 Temperature measurement 32 Megger Baker MTR105 Overview 33 Description 33 Features 33 Applications 34 Safety 34 Insulation resistance tests 34 Voltmeter 35 Continuity (Resistance) tests 35 DLRO Four wire Kelvin low resistance 35 Motor Direction of Rotation test 35 Inductance, Capacitance and Resistance meter (LCR) 36 Temperature 36 Display 36 Guard Terminal 36 Storage and download of results 36 Instrument software updates 36 Specifications www.megger.com 37 Guide to Motor testing 3 Contents This is the first in a series of...