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 11kV columns in Bangladesh Rural Electrification Board (BREB) 11kV 50Hz medium voltage distribution network.
ROCKWILL 11kV Automatic Circuit Recloser is three-phase pole-mounted vacuum recloser designed to comply with BREB 11kV Automatic Circuit Reclose Specification Submission Sheet for Bangladesh rural overhead distribution network. Nominal system voltage 11kV, highest equipment rated voltage 12kV, rated continuous current 630A / optional 1250A, rated short-circuit breaking current 16kA,20kA for 3 seconds. Vacuum interrupter with solid dielectric insulation, SF₆-free. Intelligent protection controller supports up to four programmable auto-reclose operations and lockout on permanent faults. Control cabinet is IP65 tropicalised design to withstand high humidity, heavy monsoon rain and coastal salt mist. Local manual operation and standard SCADA communication protocols are supported. Full IEC type test reports can be supplied and BREB witness test is available upon request. All technical data, drawings and test certificates can be prepared in BREB submission sheet format for tender evaluation and site acceptance.