CEE Relays Ltd

Tel:   +44 1753 576477    Fax: +44 1753 825661
DC Systems Analysis Modules
The DC System Analysis modules include Battery Sizing, DC Load Flow, DC Short Circuit (ANSI), and DC Short Circuit (IEC). 

A downloadable version of the DC Systems brochure is available in PDF format via a link at the bottom of this page. 
Compliance with Industry Standards
  • Battery Sizing - IEEE standard 485 for sizing Lead-Acid batteries and IEEE standard 1115-2000 for sizing Nickel-Cadmium batteries, determines the size of batteries to supply the worse case DC duty cycle loads and AC emergency loads. 
  • DC Load Flow - Calculates power, current and voltage drop profiles. Represents constant kW, I, and Z, load types and evaluates all loading conditions for duty cycle loads and AC emergency loads. 
  • DC Short Circuit - ANSI standard 399 and 946, calculates the initial rate of rise and peak fault current. 
  • DC Short Circuit - IEC standard 61660, calculates the peak fault current, time constants, time to peak, and steady state conditions.
Benefits
  • Save time with intuitive scenario manager interface. 
  • Communicate designs effectively with graphical and text base results. 
  • Improve decisions by quickly comparing resulting curves from different scenarios. 
  • Increase productivity by modelling both DC and AC systems in a single project. 
  • Reduce mistakes by evaluating all loading conditions and duty cycle loads. 
  • Battery Sizing and Load Flow automatically calculates AC emergency loads and their impact on the DC system to help you design safer and more reliable systems.
DC Equipment Library
  • Battery Library - Rt Curve and Discharge Curve for Lead-Acid and Nickel-Cadmium batteries. 
  • DC Generator Library - Name Plate data, Transient Resistance and Inductance. 
  • DC Motor Library - Name Plate data, Transient Resistance and Inductance.
DC Component Types
Create models of different types of direct-current components including those listed below.  
  • Lead-Acid Battery 
  • Nickel-Cadmium Battery 
  • Rectifier 
  • DC Cable 
  • DC Bus/Node 
  • DC Load 
  • DC Motor 
  • Train 
  • DC Generator 
  • Inverter/UPS 
  • DC-DC Converter 
  • DC Capacitor
A downloadable version of the DC Systems brochure is available here.
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