Electricity + Control January 2015
CONTENTS
Control systems and automation 4
Conveyor control system for mining... By C du Plessis, ifm electronic
6
Round UP
Drives, motors and switchgear 12
Installing and commissioning motors... By H du Preez, Consultant
16
Round UP
Earthing and lightning protection 18 When and Where should Which surge protection be used?... By Dipl Ing R Hausmann, Phoenix Contact 22 Round UP
Standby and back-up 24
Gas-generated electric power – with benefits... By N Alwar, Barloworld Power
27
Round UP
Pressure and level measurement 28 Process safety through diaphragm seal systems with diaphragm break monitoring... By J Breunig and J Zipp, WIKA 32 Round UP
Energy and enviroFiciency 34
Uganda’s energy sector: Challenges and opportunities... By R Mbabazi (Makerere University), Professor B Sebitosi (Stellenbosch University), Dr Julianne Sansa-Otim (Makerere University, Dr Richard Okou (Makerere University)
39
Round UP
Regulars
Cover
1 Comment 11 Cover article
Beckhoff ’s ‘New Automation Technology’ philosophy repre- sents universal and open control and automation solutions that are used worldwide in a variety of ap- plications. Read more on page 11 .
Visit our innovative online technical resource for the engineering industry. www.eandcspoton.co.za
39 Greenie Beanie 40 Light+Current 40 Bizz Buzz 43 Social Engineers 44 Clipboard
FEATURES: • Control systems and automation • Drives,motors and switchgear • Earthing and lightning protection • Standby and back-up • Pressure and levelmeasurement • Energy and enviroFiciency:Africa
E+C Jan 2015 cover.indd 1
2014/12/18 11:18:41AM
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