IEC 62032:2012

IEC 62032
Edition 2.0 2012-06
™
IEEE Std C57.135
INTERNATIONAL
STANDARD
Guide for the Application, Specification, and Testing of Phase-Shifting
Transformers
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IEC 62032
Edition 2.0 2012-06
IEEE Std C57.135™
INTERNATIONAL
STANDARD
Guide for the Application, Specification, and Testing of Phase-Shifting

Transformers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
X
ICS 29.180 ISBN 978-2-83220-101-5

– ii – IEEE Std C57.135-2011
Contents
1. Overview . 1
1.1 Scope . 1
1.2 Purpose . 1
2. Normative references . 2
3. Definitions . 2
4. Application and theory of PSTs . 4
4.1 Introduction . 4
4.2 Basic principle of application—advanced and retard phase angle . 4
4.3 PST under load . 6
4.4 Power transfer . 8
4.5 Types of PSTs .10
4.6 Special on load tap changer (OLTC) features .16
4.7 Arrangement of more than one PST .20
4.8 Design criteria.20
5. Service conditions .21
5.1 Usual service conditions .21
5.2 Loading at other than rated conditions .22
5.3 Unusual service conditions .22
5.4 Protection .23
6. Rating data .26
6.1 Polarity, angular displacement, and terminal markings .26
6.2 Impedance .26
6.3 Name plates .27
7. Construction .27
7.1 Enclosed throat connections .27
7.2 Liquid insulation and preservation system .27
8. Short-circuit characteristics .28
8.1 Short-circuit requirements .28
9. Control system .29
9.1 Control equipment and accessories .29
9.2 Requirements .29
9.3 Test code for control systems .31
10. Testing of PSTs .32
10.1 General .32
10.2 Special tests for PSTs .33
11. Tolerances .34
11.1 General .34
11.2 Tolerances for ratio of series and exciting units .34
11.3 Tolerance for phase angle and impedance .34
Published by IEC under license from IEEE. © 2011 IEEE. All rights reserved.

IEEE Std C57.135-2011 – iii –
12. Bid document checklist .35
12.1 Nontechnical information .35
12.2 Technical information .35
12.3 Special requirements or conditions .36
12.4 Additional information .36
Annex A (informative) Bibliography .38
Annex B (informative) IEEE List of Participants . 40

Published by IEC under license from IEEE. © 2011 IEEE. All rights reserved.

– iv – IEEE Std C57.135-2011
Guide for the Application, Specification, and Testing of
Phase-Shifting Transformers
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