GSO IEC TR 60909-4:2024

IEC TR 60909-4:2021
Gulf Standard   Current Edition · Approved on 31 January 2024

Short-circuit currents in three-phase AC systems - Part 4: Examples for the calculation of short-circuit currents

GSO IEC TR 60909-4:2024 Files

GSO IEC TR 60909-4:2024 Scope

IEC TR 60909-4:2021 which is a Technical Report, is intended to give help for the application of IEC 60909-0 for the calculation of short-circuit currents in 50 Hz or 60 Hz three-phase AC systems.
This document does not include additional requirements but gives support for the modelling of electrical equipment in the positive-sequence, the negative-sequence and the zero-sequence system (Clause 4), the practical execution of calculations in a low-voltage system (Clause 5), a medium-voltage system with asynchronous motors (Clause 6) and a power station unit with its auxiliary network feeding a large number of medium-voltage asynchronous motors and low-voltage motor groups (Clause 7).
The three examples given in Clauses 5, 6 and 7 are similar to those given in IEC TR 60909-4:2000 but they are revised in accordance with IEC 60909-0, which replaces it. The example given in Clause 8 is new and mirrors the introduction of the new 6.8 of IEC 60909-0:2016.
Clause 9 gives the circuit diagram and the data of a test network and the results for a calculation carried out in accordance with IEC 60909-0, to offer the possibility for a comparison between the results found with a digital program for the calculation of short-circuit currents and the given results for and in a high-voltage network with power station units, generators, asynchronous motors and lines in four different voltage levels 380 kV, 110 kV, 30 kV and 10 kV.
This second edition cancels and replaces the first edition published in 2000. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) adaption to IEC 60909-0:2016;
b) addition of an example for the calculation of short-circuit currents of wind power station units;
c) correction of errors.

Best Sellers From Electrical Sector

GSO 2530:2016
 
Gulf Standard
Energy Labelling And Minimum Energy Performance Requirements For Air-Conditioners
OS GSO 2530:2016
GSO 2530:2016 
Omani Standard
Energy Labelling And Minimum Energy Performance Requirements For Air-Conditioners
OS GSO 34:2007
GSO 34:2007 
Omani Standard
LEAD-ACID STARTER BATTERIES USED FOR MOTOR VEHICLES AND INTERNAL COMBUSTION ENGINES
GSO 34:2007
 
Gulf Technical Regulation
LEAD-ACID STARTER BATTERIES USED FOR MOTOR VEHICLES AND INTERNAL COMBUSTION ENGINES

Recently Published from Electrical Sector

GSO IEC 61558-2-2:2024
IEC 61558-2-2:2022 
Gulf Standard
Safety of transformers, reactors, power supply units and combinations thereof - Part 2-2: Particular requirements and tests for control transformers and power supply units incorporating control transformers
GSO IEC 60664-1:2024
IEC 60664-1:2020 
Gulf Standard
Insulation coordination for equipment within low-voltage supply systems - Part 1: Principles, requirements and tests
GSO IEC 61936-2:2024
IEC 61936-2:2023 
Gulf Standard
Power installations exceeding 1 kV AC and 1,5 kV DC - Part 2: DC
GSO IEC TS 62915:2024
IEC TS 62915:2023 
Gulf Standard
Photovoltaic (PV) modules - Type approval, design and safety qualification - Retesting