EasyManua.ls Logo

Omicron CP TD1 - Measurements on Three-Winding Transformers

Omicron CP TD1
70 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
CP TD1 User Manual
50 OMICRON
5.6 Measurements on three-winding transformers
In IEEE Std. 62-1995
[1]
the test procedure is described for transformers with two and three windings.
Figure 5-12 shows the six measurements necessary for a three-winding transformer.
Figure 5-12: Three-winding transformer test according to IEEE 62-1995
A more detailed test procedure for 2- and three-winding transformers can be found in IEEE C57.12.90
[2]
1. ANSI Standard 62-1995: "IEEE Guide for Diagnostic Field testing of Electric Power Apparatus - Part 1: Oil Filled Power
Transformers, Regulators, and Reactors", IEEE New York, 1995
Table 5-8: The six necessary measurements
Test mode Energize Ground Guard UST Measure
GST High (HV) - Low, Tertiary - C
H
GST Low (LV) - Tertiary, High - C
L
GST Tertiary (TV) - High, Low - C
T
Supplementary Test for inter-winding insulations
UST High (HV) Tertiary (TV) - Low (LV) C
HL
UST Low (LV) High (HV) - Tertiary (TV) C
LT
UST Tertiary (TV) Low (LV) - High (HV) C
HT
2. IEEE Standard C57.12.90: "IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating
Transformers", IEEE New York, 1995
Tertiary Low High
C
HT
C
LT
C
HL
C
T
C
L
C
H

Table of Contents

Other manuals for Omicron CP TD1

Related product manuals