May 1999
VACON - the comprehensive drive solutionBuilding on CHI Control's commitment to providing open, felxible industrial control solutions, the VACON range of frequency converters now offers more choices, options and accessories to keep you in control. With its broad kilowatt range (0,37 to 1 500 kW) and voltage range from 200 V to a true 690 V, the VACON series ensures that CHI can be your drive supplier, whatever the requirement, well into the next century. The VACON range of converters offers carefree operation and is available with a 1 000 day millennial guarantee.
With an entire facility equipped with the same drive techology, personnel need learn to use only one VACON control panel in order to operate any VACON drive. This leads to significant savings in time and effort.
Mark Daintree - VACON
Analytical Instrumentation
Relative humidity: measuring the unmeasurable?
J Hattingh (Protea Electronics) ,
A wide range of measurements associated with relative humidty becomes possible
And More
Tutorial No 2: Industrial Data Communications - RS232/RS485
Drives, Motor Control, Protection and Switchgear
An artificial neural network identifier for the control of turbogenerators
GK Venayagamoorthy and RG Harley (University of Natal) ,
This article highlights the need for advanced modelling techniques for effective control of power systems
Energy Efficiency, Supply and Management
Selecting power conditioners
K Norris (Ferro Resonant Technologies) ,
This article is written in an effort to assist in selecting power conditioners in complex and often varied applications
New concept for medium voltage gas insulated switchgear (GIS)
LJ Fleischer (Siemens) ,
Based on the definition of major failures these units have so far achieved an MTBF of more than 10 000 years
Sensors, Switches and Transducers
Understanding fixed-field sensors
R Topham (RET Automation Controls) ,
Fixed-field sensors are good replacements for retroflective or opposed sensors in conveyor applications
The long range microphone
CJ Smith (Weavind Park Consulting and Technikon Pretoria) ,
What is the truth about these seemingly unbelievable units
