This edition of the NETA World is on communications — a very broad, but necessary subject. This Tech Quiz looks at three types of communication: digital substations, three-way communication, and hand signals for heavy lifting and cranes. Every NETA technician should have knowledge of these.
1. Digital substations are based on which IEC standard?
- IEC 61800
- IEC 47855
- IEC 60947
- IEC 61850
2. Digital substations eliminate:
- Copper wire connections
- Personal interaction with the equipment
- Copper bus between breakers and other devices
- CTs and PTs to save space and increase signals
3. Three-way communication first originated in:
- Nuclear industry
- Airline industry
4. Hand signals are important every time we use a machine to lift or move an object. Which hand signal should be obeyed by a crane operator regardless of who gives it?
- Time for a break
James (Jim) R. White, Vice President of Training Services, has worked for Shermco Industries Inc. since 2001. He is a NFPA Certified Electrical Safety Compliance Professional and a NETA Level 4 Senior Technician. Jim is NETA’s principal member on NFPA Technical Committee NFPA 70E®, Electrical Safety in the Workplace®, NETA’s principal representative on National Electrical Code® Code-Making Panel (CMP) 13, and represents NETA on ASTM International Technical Committee F18, Electrical Protective Equipment for Workers. Jim is Shermco Industries’ principal member on NFPA Technical Committee for NFPA 70B, Recommended Practice for Electrical Equipment Maintenance and represents AWEA on the ANSI/ISEA Standard 203 Secondary Single-Use Flame Resistant Protective Clothing for Use Over Primary Flame Resistant Protective Clothing. An IEEE Senior Member, Jim received the IEEE/IAS/PCIC Electrical Safety Excellence Award in 2011 and NETA’s Outstanding Achievement Award in 2013. Jim was Chairman of the IEEE Electrical Safety Workshop in 2008 and is currently Vice-Chair for the IEEE IAS/PCIC Safety Subcommittee.