This document applies to the technical requirements for the design, testing, supply, installation, and related supporting equipment (sensors, controllers, cables, etc.) of automatic reclosing on 33kV columns in Bangladesh Rural Electrification Board (BREB) 33kV 50Hz medium voltage distribution network.
ROCKWILL 33kV Automatic Circuit Recloser is three-phase pole-mounted vacuum recloser designed to satisfy BREB 33kV Automatic Circuit Reclose Specification Submission Sheet for Bangladesh rural overhead distribution network. Nominal system voltage 33kV, highest equipment rated voltage 38kV, rated continuous current 630A /1250A, rated short circuit breaking current 16kA, 20kA for 3 seconds. Vacuum interrupter with solid dielectric insulation, SF₆-free. Controller supports up to 4 programmable auto-reclose sequences with lockout on permanent fault. Control cabinet IP65, tropicalised design for high temperature, heavy humidity and monsoon environment. Local manual operation and SCADA remote communication supported. Product shall pass full IEC type test and BREB witness test as required in submission sheet, widely deployed for Bangladesh rural 33kV overhead feeders.