Relay maintenance generally consists of : Inspection and burnishing of contacts. Adjustments checking (iv) Breakers tripped by manual contact closing. Relay . Operation, maintenance, and field test procedures for protective relays and associated circuits (photo credit: Omicron) The protection circuits include all low-voltage devices and wiring connected to: instrument transformer secondaries, telecommunication systems, auxiliary relays and devices. Relay systems protect high-voltage equipment and transmission lines to ensure safe, stable systems. Although failure of a protective relay system may have severe local or regional impacts, most protective relay systems are not required to operate to prove they are in working order. This guide provides recommended. This utility standard establishes the requirements for testing and maintaining protection systems, automatic reclosing, and sudden pressure relaying. This document also directs personnel to follow the utility procedures in the Protective Equipment Standard Test Procedures (PESTP) Manual and the. Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. This guide is applicable to all “main grid”.