Specification for 33kV Vacuum Automatic Recloser by Kenya Power and Lighting Company Limited (KPLC)

Specification for 33kV Vacuum Automatic Recloser by Kenya Power and Lighting Company Limited (KPLC) defines the minimum design, material, rating, test and performance requirements for pole-mounted three-phase vacuum reclosers applied on KPLC 33kV overhead distribution network. It mandates rated equipment voltage 38kV, minimum 630A continuous current, IP65 control cabinet and maximum four auto-reclose operations before lockout.

Specification for 33kV Vacuum Automatic Recloser by KPLC requires minimum 70kV rms power frequency withstand voltage for 1 minute and 170kV peak lightning impulse withstand voltage (1.2/50μs). The insulation system shall remain stable under tropical high humidity, dust and UV exposure in Kenyan field conditions.

Specification for 33kV Vacuum Automatic Recloser by KPLC requires the recloser to complete up to four auto-reclose operations and then lock out for permanent faults. The protection sequence is fully programmable, to distinguish transient overhead faults from permanent faults and improve supply restoration for rural feeders.

Specification for 33kV Vacuum Automatic Recloser by KPLC stipulates control cabinet enclosure IP65 per IEC 60529. The cabinet door shall be equipped with padlock provision compatible with KPLC standard safety padlock to prevent unauthorized access to protection and control circuits.

Specification for 33kV Vacuum Automatic Recloser by KPLC requires full IEC 62271 series type tests and KPLC witness test upon request. The vacuum recloser detects and isolates overhead faults automatically, restores power for transient faults quickly, reduces outage duration and reduces manual fault patrol workload on long rural 33kV feeders.