- Active. This VuSpec includes 47 active IEEE standards, guides, recommended practices in the Power Systems Relays family. Power System Relays Standards concentrate on the application, design, construction and operation of protective, regulating, monitoring, reclosing, synch-check, synchronizing and auxiliary relays. This includes items used in the operation of relays and relaying systems in the transmission, generation, distribution and utilization of electrical energy and their effect on system operation. The standards included in IEEE Power Systems Relays Collection: VuSpec are suited for the electrical environment, including relay withstand capabilities to electromagnetic interference, performance of instrument transformers, testing procedures, applications, performance criteria, and definitions of relays and relay systems. This indispensable collection of standards is ideal for electrical and electronics, power, high-voltage, insulation, electrical-power, transmission and distribution, and industrial engineers; and power system researchers and technicians. Please visit http://standards.ieee.org/findstds/prod/cds/powsysrelay.pdf for the complete listing of contents. LICENSING: SINGLE-USER EDITION: THIS PRODUCT IS LICENSED FOR ONE USER ONLY.