This document describes pole‑mounted recloser controller complying with IEC 60255‑26, IEC 60255‑27 for measuring relays including general requirements, EMC and product safety, as well as IEC 60068‑2 and IEC 60068‑2 environmental test standards.
It integrates phase overcurrent, earth‑fault, sensitive earth‑fault, undervoltage, under‑frequency and broken‑wire protection, supporting multiple IEC & US inverse‑time curves. Functions include cold‑load pickup, fault zone sequence coordination, automatic loop‑network back‑feed restoration and synchronism check closing.
Local LCD‑keypad HMI is provided, with RS485/Ethernet interfaces supporting IEC60870‑5, DNP3.0 and Modbus‑RTU. Non‑volatile memory saves trip, alarm and SOE sequence‑of‑events data without power‑dependent backup. It applies to radial and loop‑type overhead distribution automation.