Basic HTML Version
Six ABB variable speed drives
(VSDs) have replaced damper
control on induced draft fans and
secondary air fans at Valorsul’s
waste-to-energy plant in Portugal
with massive annual energy sav-
ings! Read more on page 41.
FEATURES:
• Control systems and automation
• Electrical protection and safety
• Plant maintenance, test and measurement
• Sensors, switches and transducers
• Energy and enviroFiciency
E+C sep 2012 cover.indd 1
2012/08/29 03:18:32 PM
Features
Contents
Control systems and automation
4
Remote I/O network determinism
By D Doggert and M J Palomino, Schneider Electric
8
Round UP
Electrical protection and safety
22
Designing a lightning protection system for a generating system
By O Bekker, Fluor
31
Round UP
Plant maintenance, test and measurement
32
Swiss precision for the supervision of Italian electric power grids
By S D’Abrusco, GMC-Instruments, Italy
34
Round UP
Sensors, switches and transducers
42
When precision is required
By B Vetterlie, Keller AG, Switzerland
45
Round UP
Energy efficiency and enviroFiciency
48
Holistic energy management – ultimate goal of energy efficiency initiatives
By R Wyma, Shared Energy Management
50
Saving with solar – Ruimsig campus – case in point
By N von Hase, Solsquare
52
Round UP
Regulars
Publisher
:
JennyWarwick
Editor:
Wendy Izgorsek
Editorial Technical Director:
Ian Jandrell
Design & Layout:
Adél JvR Bothma
Advertising Managers:
Helen Couvaras and Heidi Jandrell
Circulation:
Karen Smith
Reader Enquiries:
Radha Naidoo
Cover
Published monthly by:
Crown Publications cc
CnrTheunis and Sovereign Sts
Bedford Gardens
PO Box 140, Bedfordview 2008
Tel: (011) 622-4770; Fax: (011) 615-6108
e-mail: ec@crown.co.za
admin@crown.co.za
Website: www.crown.co.za
Printed by:Tandym Print
Quarter 1 (January – March 2012)
Paid circulation: 61
Free circulation: 4684
Total circulation: 4745
41 Cover article
52 Greenie Beanie
60 Light+Current
61 CESA Forum
63 Bizz Buzz
66 Social Engineers
3
September ‘12
Electricity+Control