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<br /> Print Post Approved PP 424022/1099<br /> (SJW<br /> 1CNRCK@CP<br /> <br /> <br /> MOTORS & DRIVES '#<br /> DIFFERENCES AND GOALS BETWEEN<br /> EARTHING AND BONDING<br /> The application of variable speed drives (VSDs) or/ variable frequency drives (VFDs) are well-<br /> known for their benefits. They are energy efficient and flexible in the controlling of processes and<br /> machinery using standard AC or PM motors. Although many VSD's can provide efficient control,<br /> depending on the design and installation of the VSD, they may result in increased problems<br /> elsewhere in the electrical system.<br /> By Eduardo Gie, Danfoss Pacific<br /> Part I of a III Part Series<br /> T<br /> he application of variable speed drives<br /> (VSD) today, (also known as VVVF,<br /> VFD or AFD) in all automated process<br /> plants is a standard equipment that controls<br /> the speed of Asynchronous Motors (AC<br /> Motor) o<a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 1" href="http://viewer.zmags.com/publication/1687b129?page=1"> Print Post Approved PP 424022/1099 (SJW 1CNRC</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 2" href="http://viewer.zmags.com/publication/1687b129?page=2"> </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 3" href="http://viewer.zmags.com/publication/1687b129?page=3"> MOTORS & DRIVES '# DIFFERENCES </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 4" href="http://viewer.zmags.com/publication/1687b129?page=4"> '#3RD QTR 2014 JULY-SEPTEMBER INDUSTRIAL IO M</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 5" href="http://viewer.zmags.com/publication/1687b129?page=5"> '# ELECTRICAL SAFETY DEVELOPMENTS 38 - 44</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 6" href="http://viewer.zmags.com/publication/1687b129?page=6"> '#MOTORS & DRIVES Continued from page 1 Howeve</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 7" href="http://viewer.zmags.com/publication/1687b129?page=7"> '# Please note: Many hospitals, airpor</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 8" href="http://viewer.zmags.com/publication/1687b129?page=8"> '#MOTORS & DRIVES HAZARDOUS AREA ELECTRIC MOT</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 9" href="http://viewer.zmags.com/publication/1687b129?page=9"> 7(&2KDYHWKHFRPSOHWHSDFNDJH12:LQFOXGLQJWKH 0$;(++L</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 10" href="http://viewer.zmags.com/publication/1687b129?page=10"> '#MOTORS & DRIVES TROUBLESHOOTING 3 PHASE MOT</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 11" href="http://viewer.zmags.com/publication/1687b129?page=11"> '# Figure 2 Input points going from the main </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 12" href="http://viewer.zmags.com/publication/1687b129?page=12"> '#MOTORS & DRIVES Continued from page 9 You ca</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 13" href="http://viewer.zmags.com/publication/1687b129?page=13"> AUTOMATION & PROCESS CONTROL '# INDUSTRIAL </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 14" href="http://viewer.zmags.com/publication/1687b129?page=14"> '#AUTOMATION & PROCESS CONTROL THE INDUSTRIAL</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 15" href="http://viewer.zmags.com/publication/1687b129?page=15"> '# Automation intends to expand its capability</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 16" href="http://viewer.zmags.com/publication/1687b129?page=16"> '#AUTOMATION & PROCESS CONTROL A BRIEF HISTOR</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 17" href="http://viewer.zmags.com/publication/1687b129?page=17"> AUTOMATION & PROCESS CONTROL '# INDUSTRIAL </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 18" href="http://viewer.zmags.com/publication/1687b129?page=18"> '#AUTOMATION & PROCESS CONTROL Continued from p</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 19" href="http://viewer.zmags.com/publication/1687b129?page=19"> AUTOMATION & PROCESS CONTROL '# STANDARDS D</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 20" href="http://viewer.zmags.com/publication/1687b129?page=20"> '#AUTOMATION & PROCESS CONTROL Continued from p</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 21" href="http://viewer.zmags.com/publication/1687b129?page=21"> '# APPS COURSE ENHANCES A GENERATION OF PROFES</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 22" href="http://viewer.zmags.com/publication/1687b129?page=22"> '#AUTOMATION & PROCESS CONTROL INTEGRATING SA</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 23" href="http://viewer.zmags.com/publication/1687b129?page=23"> '# dangerous outcomes that are left in situ af</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 24" href="http://viewer.zmags.com/publication/1687b129?page=24"> Cameron McMain - Power Electric Laura </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 25" href="http://viewer.zmags.com/publication/1687b129?page=25"> Louis Chang - WEG Peter Hardie – Ampcon</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 26" href="http://viewer.zmags.com/publication/1687b129?page=26"> '#INSTRUMENTATION TEST & MEASURE TDR FAULT FI</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 27" href="http://viewer.zmags.com/publication/1687b129?page=27"> </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 28" href="http://viewer.zmags.com/publication/1687b129?page=28"> '#INSTRUMENTATION TEST & MEASURE SELECTING TH</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 29" href="http://viewer.zmags.com/publication/1687b129?page=29"> '# Clamp meters having a movable jaw have in </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 30" href="http://viewer.zmags.com/publication/1687b129?page=30"> '#LIGHTNING & SURGE PROTECTION BACKUP FUSES I</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 31" href="http://viewer.zmags.com/publication/1687b129?page=31"> '# Figure</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 32" href="http://viewer.zmags.com/publication/1687b129?page=32"> '#LIGHTNING & SURGE PROTECTION LIGHTNING AND </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 33" href="http://viewer.zmags.com/publication/1687b129?page=33"> '# DEHN protects L.T.E. rem</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 34" href="http://viewer.zmags.com/publication/1687b129?page=34"> '#LIGHTNING & SURGE PROTECTION LIGHTNING PROT</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 35" href="http://viewer.zmags.com/publication/1687b129?page=35"> '# F</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 36" href="http://viewer.zmags.com/publication/1687b129?page=36"> '#LIGHTNING & SURGE PROTECTION LIGHTNING AND </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 37" href="http://viewer.zmags.com/publication/1687b129?page=37"> </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 38" href="http://viewer.zmags.com/publication/1687b129?page=38"> '#LIGHTNING & SURGE PROTECTION Continued from p</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 39" href="http://viewer.zmags.com/publication/1687b129?page=39"> EMERGENCY & MERGENCY & REMOTE POWER </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 40" href="http://viewer.zmags.com/publication/1687b129?page=40"> '#ELECTRICAL SAFETY DEVELOPMENTS DETECTING TE</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 41" href="http://viewer.zmags.com/publication/1687b129?page=41"> '# A heated PCB trac</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 42" href="http://viewer.zmags.com/publication/1687b129?page=42"> '#ELECTRICAL SAFETY DEVELOPMENTS ELECTRICAL MA</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 43" href="http://viewer.zmags.com/publication/1687b129?page=43"> </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 44" href="http://viewer.zmags.com/publication/1687b129?page=44"> '# INTRINSIC SAFETY FUSES Over the years, th</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 45" href="http://viewer.zmags.com/publication/1687b129?page=45"> '# An intrinsically safe certified fuse is usef</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 46" href="http://viewer.zmags.com/publication/1687b129?page=46"> '#ELECTRICAL SAFETY DEVELOPMENTS HANDS-ON HIG</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 47" href="http://viewer.zmags.com/publication/1687b129?page=47"> ELECTRICIANS TURNING TO THERMAL IMAGING EQUIPMENT</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 48" href="http://viewer.zmags.com/publication/1687b129?page=48"> '#REFURBISHMENT & SERVICES ASSET MANAGEMENT: </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 49" href="http://viewer.zmags.com/publication/1687b129?page=49"> '# Enabling techn</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 50" href="http://viewer.zmags.com/publication/1687b129?page=50"> '#REFURBISHMENT & SERVICES ONLINE MONITORING </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 51" href="http://viewer.zmags.com/publication/1687b129?page=51"> '# Figure 6 Signs of PD activity a</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 52" href="http://viewer.zmags.com/publication/1687b129?page=52"> '# SPEAKING OF NUMBERS I find it inter</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 53" href="http://viewer.zmags.com/publication/1687b129?page=53"> '# So as you can see the numbers fluctuate arou</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 54" href="http://viewer.zmags.com/publication/1687b129?page=54"> '#COST OF ELECTRICITY GAS EXPORT GAIN Vs ENER</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 55" href="http://viewer.zmags.com/publication/1687b129?page=55"> '# ENERGY USERS HEAVILY SUBSIDISE ILL-CONSIDER</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 56" href="http://viewer.zmags.com/publication/1687b129?page=56"> '#COST OF ELECTRICITY EFFICIENT AND EFFECTIVE</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 57" href="http://viewer.zmags.com/publication/1687b129?page=57"> '# FUEL CELL SYSTEM OPERATION A simple analo</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 58" href="http://viewer.zmags.com/publication/1687b129?page=58"> '#COST OF ELECTRICITY Continued from page 55 e</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 59" href="http://viewer.zmags.com/publication/1687b129?page=59"> HAZARDOUS AREA DEVELOPMENTS '# A STUDY OF </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 60" href="http://viewer.zmags.com/publication/1687b129?page=60"> '#HAZARDOUS AREA DEVELOPMENTS Continued from pa</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 61" href="http://viewer.zmags.com/publication/1687b129?page=61"> '# This is due to the fact that IE level is a </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 62" href="http://viewer.zmags.com/publication/1687b129?page=62"> '#HAZARDOUS AREA DEVELOPMENTS Continued from pa</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 63" href="http://viewer.zmags.com/publication/1687b129?page=63"> '# Table III. Example of Location and Mine O</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 64" href="http://viewer.zmags.com/publication/1687b129?page=64"> '#HAZARDOUS AREA DEVELOPMENTS OVERVIEW OF EXP</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 65" href="http://viewer.zmags.com/publication/1687b129?page=65"> '# The enclosures provide alarm / interlock sy</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 66" href="http://viewer.zmags.com/publication/1687b129?page=66"> '#HAZARDOUS AREAS DEVELOPMENTS STATIC ELECTRI</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 67" href="http://viewer.zmags.com/publication/1687b129?page=67"> '# ACCIDENTS There have been numerous </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 68" href="http://viewer.zmags.com/publication/1687b129?page=68"> '#HAZARDOUS AREAS DEVELOPMENTS Continued from p</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 69" href="http://viewer.zmags.com/publication/1687b129?page=69"> '# CONCLUSION The dangers of static electricit</a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 70" href="http://viewer.zmags.com/publication/1687b129?page=70"> AN IMPORTANT READER ANNOUNCEMENT! NOW </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 71" href="http://viewer.zmags.com/publication/1687b129?page=71"> </a> <a title="2014 - 6932 Industrial Elctrix July - Sept 2014 page 72" href="http://viewer.zmags.com/publication/1687b129?page=72"> </a>