The SDR controller constitutes the brains of the recloser. It comprises indicators and control elements, communication interfaces and a USB port for convenient connection of a laptop computer. Access to the user level menus and data is protected by multi-level password authentication.
Along with overcurrent time protection (up to 49 preset curves and multiple user- configurable curves), it is equipped for ground fault and sensitive ground fault detection. Inrush restraint and load shedding are further protection functions that help prevent nuisance outages.
Fully withdrawable type 7SR control and protection relay
Ease of maintenance
Complete system monitoring
Tri-color programmable LEDs
USB port (front of controller)
48-hour battery UPS
Integrated current transformers (CTs) and optional resistive voltage sensors in recloser switch unit
Single-phase, three-phase and triple-single reclosers available
Fully programmable from front panel
Customizable and intuitive Human Machine Interface (HMI) with programmable buttons, indicators and logic
Optional docking station for remote programming.
Monitoring/SCADA of various protocols
Multiple connection protocols
Input and output logic bits.