WTI TAN-1005 - Manuals

CONTENTS PAGE 1 INTRODUCTION ........................................................................................................................... 1 2 INTRINSIC SAFETY REQUIREMENTS FOR EARTHING AND BONDING ............................................... 2 3 CERTIFICATION OF SURGE SUPPRESSORS ....

SURGE SUPPRESSION FORZONE 0 LOCATIONS tal requirement of all the methods of protection used for power equip-ment. It is not usual for lightning induced current to directly cause enoughheating to create a hazard by temperature ignition, since the currentpulses are too short to create a sustained high...

tion from this possibility or sited with care in the shelter of some otherprotrusion. The diagram shows a two wire 4 to 20 milliamp transmitterwith internal isolation fed from a galvanic isolator. To establish theorder of the problem some assumptions are made which cannot befully justified but are b...