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IEEE - 433

Recommended Practice for Insulation Testing of AC Electric Machinery with High Voltage Rating up to 30 kV at Very Low Frequency

active, Most Current
Organization: IEEE
Publication Date: 9 February 2022
Status: active
Page Count: 30
scope:

This document describes very low frequency (VLF) testing of ac electric machines. It covers acceptance testing of new machines in the factory or on-site after erection. Also covered is the routine maintenance testing of machines that have been in service. In order to facilitate communication and comparison among investigators, this document recommends that the VLF used be 0.1 Hz ±10%. For ac electric machines, voltages between 3.3 kV to 30 kV are considered to be high voltage machines.

Purpose

The purposes of this recommended practice are as follows:

a) To provide a uniform procedure for testing the stator (armature) insulation of ac electric machines with VLF voltage in order to obtain consistent results

b) To recommend constants for relating VLF tests to power-frequency and direct-voltage tests to obtain equally effective test levels

c) To describe VLF test equipment and wave shape

d) To define terms that have specific meaning in VLF testing

Document History

433
February 9, 2022
Recommended Practice for Insulation Testing of AC Electric Machinery with High Voltage Rating up to 30 kV at Very Low Frequency
This document describes very low frequency (VLF) testing of ac electric machines. It covers acceptance testing of new machines in the factory or on-site after erection. Also covered is the routine...
December 9, 2009
Recommended Practice for Insulation Testing of AC Electric Machinery with High Voltage at Very Low Frequency
This document describes very low frequency (VLF) testing of ac electric machines. It covers acceptance testing of new machines in the factory or on-site after erection. Also covered is the routine...
January 1, 1974
Recommended Practice for Insulation Testing of Large AC Rotating Machinery with High Voltage at Very Low Frequency
A description is not available for this item.
January 1, 1959
Proposed Test Procedure for MAGNETIC AMPLIFIERS
FOREWORD The magnetic amplifier definitions contained in A I E E Transactions Paper No. 58-175 are adhered to. In addition, the following definitions are presented for clarity only; they are not a...

References

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