IEC 61225:2019 

Nuclear power plants - Instrumentation, control and electrical power systems - Requirements for static uninterruptible DC and AC power supply systems

English/French
CHF 

Do you need a multi-user copy?

English/French
CHF 

Preview

Abstract

IEC 61225:2019 specifies the performance and the functional characteristics of the low voltage static uninterruptible power supply (SUPS) systems in a nuclear power plant and, for applicable parts, in general for nuclear facilities. An uninterruptible power supply is an electrical equipment which draws electrical energy from a source, stores it and maintains supply in a specified form by means inside the equipment to output terminals. A static uninterruptible power supply (SUPS) has no rotating parts to perform its functions.
This third edition cancels and replaces the second edition published in 2005. This edition includes the following significant technical changes with respect to the previous edition:
a)  the principal objective of this edition is to address the requirements on the static uninterruptible power supplies in nuclear power plants;
b)  in addition to Instrumentation and Control (I&C) power supplies include all static uninterruptible power supplies;
c)  emphasize that the static uninterruptible power supplies shall protect the connected equipment (loads) from transients on the on-site AC distribution system (the immunity concept);
d)  in accordance with the defence-in-depth concept, this standard applies to static uninterruptible power supplies for all equipment, not only for equipment important to safety, with a graded approach to verification and validation;
e) addition of the requirement that, when batteries are connected in parallel under abnormal operating conditions, they shall be properly protected with isolation devices to avoid any failure that may impair more than one division of the uninterruptible power supply.

Look inside


Additional information

Publication typeInternational Standard
Publication date2019-02-15
Edition3.0
Available language(s)English/French
TC/SCTC 45/SC 45A - Instrumentation, control and electrical power systems of nuclear facilitiesrss
ICS27.120.20 - Nuclear power plants. Safety
Stability date  2022
Pages69
File size2650 KB

The following test report forms are related:


Share this page


Share your publications

Learn how to share your publications with your colleagues, using networking options.

Payment information

Our prices are in Swiss francs (CHF). We accept all major credit cards (American Express, Mastercard and Visa), PayPal and bank transfers as form of payment.


Keep in touch

Keep up to date with new publication releases and announcements with our free IEC Just Published email newsletter.

Contact customer services

Please send your enquiry by email or call us on +41 22 919 02 11 between 09:00 – 17:00 CET Monday to Friday.