CEE Relays Ltd.

87C Whitby Road, Slough, SL1 3DR

Telephone: (01753) 576477        Fax: (01753) 825661

Website: www.ceerelays.co.uk

A_FAULT Study Module

A_FAULT provides fault calculations in full compliance with the ANSI C37 standards. It offers separate solutions for low, medium and high voltage systems for symmetrical, momentary and interrupting calculations as defined in the standards. For medium and high voltage systems, the momentary and interrupting values can be calculated using either the E/X or E/Z methods permitted by the standards. Both AC and DC decrement curves required by the total current rated standard (C37.5) and the symmetrical rated standard (C37.010) are used by the program.
 

Features

Complies with ANSI standards and IEEE recommended procedures.

Provides values for applications of low, medium and high voltage breakers.

Provides separate network solutions for reporting X/R values.

Reports three-phase, single-phase to earth, phase to phase and 2-phase to earth.

ANSI multiplying factors are automatically applied to generators and motors.

Reports values for both total current and symmetrical rated breakers.

Momentary and interrupting studies can report E/X or E/Z values.

Low voltage study complies with ANSI C37.13.

Momentary study complies with ANSI C37.010 and C37.5.

Interrupting study reports total and symmetrical 2, 3, 5 and 8 cycle values.

Automatic modelling of transformers that have rated voltages and turns ratios which do not conform to system bus voltages.

Transformer taps modelled in positive, negative and zero sequence networks.

Reports calculated remote/local status for each generator.

Use either ac/dc, dc only, interpolated or no ac decay options.

Download the brochure in PDF format:

      PTW_AFault.pdf (1.4MB)

Download Acrobat Reader - version 5.0 (or above) required.