24-04-2012, 05:23 PM
Faults Types AND Effects
Power Protection.pdf (Size: 160.8 KB / Downloads: 192)
Copyright
All rights to this publication are reserved. No part of this publication or associated
software may be copied, reproduced, transmitted or stored in any form or by any
means (including electronic, mechanical, photocopying, recording or otherwise)
without prior written permission of IDC Technologies.
Disclaimer
Whilst all reasonable care has been taken to ensure that the descriptions, opinions,
programs, listings, software and diagrams are accurate and workable, IDC
Technologies and does not accept any legal responsibility or liability to any person,
organization or other entity for any direct loss, consequential loss or damage, however
caused, that may be suffered as a result of the use of this publication or the associated
workshop and software.
In case of any uncertainty, we recommend that you contact IDC Technologies for
clarification or assistance.
Trademarks
All terms noted in this publication that are believed to be registered trademarks or
trademarks are acknowledged.
IDC Training expresses its sincere thanks to all those who freely made available their
expertise in preparing this manual.
Advantages:
Essentially meets the requirements of two alternative feeds to give 100% continuity
of supply, whilst saving in copper.
Disadvantages:
For faults at T1 fault current is fed into fault via two paths in parallel, hence the fault
current is much higher.
Protection must therefore be fast and discriminate correctly so that other consumers
are not inconvenienced.