The Aderis ClearSky PLUS™ is designed to provide a set of features that support automated inrush mitigation switching, witness testing requirements, maintenance modes, and protection requirements.

Template Relay Settings File

The SEL-751 Protection Relay, and the AderisClearSky PLUS’s intended operational behaviors rely on logic programmed into the relay’s RDB settings file.

Aderis provides template RDB files that should be used as a starting point for any Customer specific protection elements, or reclosing behaviors.

Template RDB files are available for download under the Aderis A Support Resources webpage.

ClearSky PLUS RDB template files include:

1. Repair Service vs. Automatic Mode
2. Power Supply & UPS Battery TRIP
3. Automated Inrush Mitigation Switching
4. Single Phase TRIP Support

ClearSky PLUS RDB template files require customer settings to support:

1. Interconnection protection element assignment and settings are required to be programmed by the Customer
2. Interconnection reclosing behavior settings are required to be programmed by the customer

Repair Service vs. Automatic Mode

The Aderis ClearSky PLUS’s Mode Selector Switch provides Technician’s a simple means to DISABLE the Protective Relay’s ability to CLOSE.

The Mode Selector Switch may be locked to prevent automatic operation when rotated counter clockwise (CCW) to Repair Service Mode.

Mode Descriptions:

1. Automatic Mode
   • All Protection logic and reclosing (if configured) is enabled and all programmed commands for TRIP and CLOSE are allowed
   • By pushbutton or SCADA, the Protection Relay can 3-Phase TRIP
   • By pushbutton or SCADA, the Protection Relay can 3-Phase CLOSE with Automated Inrush Mitigation Switching
   • The Protection Relay cannot be commanded (via pushbutton or SCADA) to 1-Phase TRIP or 1-Phase CLOSE
2. Repair Service Mode
   • All Protection logic and reclosing (if configured) is enabled, however CLOSE commands are DISABLED … TRIP commands are ALLOWED
   • By pushbutton or SCADA, the Protection Relay can 3-Phase TRIP
   • Only by pushbutton, the Protection Relay cannot 3-Phase CLOSE
   • Only by pushbutton, the Protection Relay can 3-Phase CLOSE with Automated Inrush Mitigation Switching
   • By pushbutton or SCADA, the Protection Relay can 1-Phase TRIP
   • Only by pushbutton, the Protection Relay can 1-Phase CLOSE