BS EN 61660-1:1997
Current
The latest, up-to-date edition.
Short-circuit currents in d.c auxiliary installations in power plants and substations Calculation of short-circuit currents
Hardcopy , PDF
English
31-10-2009
Foreword
1 General
2 Calculation of short-circuit currents
3 Calculation of the total short-circuit current
Annex A (informative) - Equations for the calculation of
lambda[D], K[D], K[C] and t[pC]
Annex ZA (normative) - Normative references to international
publications with their corresponding
European publications
Describes a method for calculating short-circuit currents in d.c. auxiliary systems in power plants and substations.
Committee |
W/-
|
DevelopmentNote |
Supersedes 94/206713 DC. Also numbered as IEC 61660-1. (09/2005)
|
DocumentType |
Standard
|
Pages |
40
|
PublisherName |
British Standards Institution
|
Status |
Current
|
Supersedes |
This part of IEC 61660 describes a method for calculating short-circuit currents in d.c. auxiliary systems in power plants and substations. Such systems can be equipped with the following equipment, acting as short-circuit current sources:
rectifiers in three-phase a.c. bridge connection for 50 Hz;
stationary lead-acid batteries;
smoothing capacitors;
d.c. motors with independent excitation.
NOTE Rectifiers in three-phase a.c. bridge connection for 60 Hz are under consideration. The data of other equipment may be given by the manufacturer.
This standard is only concerned with rectifiers in three-phase a.c. bridge connection. It is not concerned with other types of rectifiers.
The purpose of the standard is to provide a generally applicable method of calculation which produces results of sufficient accuracy on the conservative side. Special methods, adjusted to particular circumstances, may be used if they give at least the same precision. Short-circuit currents, resistances and inductances may also be ascertained from system tests or measurements on model systems. In existing d.c. systems the necessary values can be ascertained from measurements taken at the assumed short-circuit location. The load current is not taken into consideration when calculating the short-circuit current. It is necessary to distinguish between two different values of short-circuit current:
the maximum short-circuit current which determines the rating of the electrical equipment;
the minimum short-circuit current which can be taken as the basis for fuse and protection ratings and settings.
Standards | Relationship |
IEC 61660-1:1997/COR1:1999 | Identical |
UNE-EN 61660-1:1999 | Identical |
NF EN 61660-1 : 1997 | Identical |
NBN EN 61660-1 : 1998 | Identical |
I.S. EN 61660-1:1999 | Identical |
SN EN 61660-1 : 1997 | Identical |
DIN EN 61660-1 : 1998 COR 1 2010 | Identical |
EN 61660-1:1997 | Identical |
IEC 60038:2009 | IEC standard voltages |
IEC 60896-1:1987 | Stationary lead-acid batteries - General requirements and methods of test. Part 1: Vented types |
IEC 60050-151:2001 | International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and magnetic devices |
IEC 60050-441:1984 | International Electrotechnical Vocabulary (IEV) - Part 441: Switchgear, controlgear and fuses |
EN 61660-2:1997 | Short-circuit currents in d.c. auxiliary installations in power plants and substations - Part 2: Calculation of effects |
IEC 61660-2:1997 | Short-circuit currents in d.c. auxiliary installations in power plants and substations - Part 2: Calculation of effects |
EN 60896-1:1991/A2:1992 | STATIONARY LEAD-ACID BATTERIES - GENERAL REQUIREMENTS AND METHODS OF TEST - VENTED TYPES |
HD 472 S1:1989/AC:2013 | NOMINAL VOLTAGES FOR LOW-VOLTAGE PUBLIC ELECTRICITY SUPPLY SYSTEMS |
IEC 60909:1988 | Short-circuit current calculation in three-phase a.c. systems |
HD 533 : 200S1 | SHORT-CIRCUIT CALCULATION IN THREE-PHASE A.C. SYSTEMS |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.