CEE Relays Ltd

Tel:   +44 1753 576477    Fax: +44 1753 825661
IEC61363 Study Module
The IEC_61363 Short Circuit Study module calculates the current that flows in an electrical power system under abnormal conditions. These currents must be calculated in order to adequately specify electrical apparatus withstand and interrupting ratings and selectively coordinate time current characteristics of electrical protective devices. 
The IEC_61363 Short Circuit study represents conditions that may affect typical marine or offshore installations more significantly than land-based systems, including more emphasis on generator and motor decay. 
The calculation methods are intended for use on unmeshed three-phase AC systems operating at 50Hz or 60Hz; having any system voltage specified in IEC 60092-201 table 2; having one or more different voltage levels; comprising generators, motors, transformers, reactors, cables and converter units; having their neutral point connected to the ship's hull through an impedance; or having their neutral point isolated from the ship's hull.

Short circuit calculations to other standards are also available with the following optional modules:
A_Fault (uses ANSI standard)

A downloadable version of the PTW_IEC61363 brochure is available in PDF format via a link at the bottom of this page. 
offshore platform image
  • Save time by easily obtaining the short circuit magnitude at each point in the power system. 
  • Design safer systems by comparing the calculated fault current to the ratings of installed equipment. 
  • Increase design reliability by supporting proper selection of circuit protection equipment for protection and coordination. 
  • Reports AC and DC current for 4 user defined times. 
  • Reports zero crossing time of total current.
IEC61363 screenshot
  • Using Existing IEC60909 input data with little IEC61363-specific data required. 
  • Study report options to include different levels of calculation detail. 
  • Options to use Load Flow Results, Per Unit U0 (I0=0), or Rated U0 and I0 as the initial voltage and current
A downloadable version of the IEC61363 module brochure is available here.
PDF 0.1Mb