Statements (33)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
digital relay
|
| gptkbp:application |
automation
control protection relay |
| gptkbp:countryOfOrigin |
gptkb:United_States
|
| gptkbp:feature |
event reporting
programmable logic self-test diagnostics oscillography fault location |
| gptkbp:firstReleased |
1990s
|
| gptkbp:function |
automation logic
breaker failure protection directional overcurrent protection distance protection reclosing |
| https://www.w3.org/2000/01/rdf-schema#label |
SEL-21 digital relay
|
| gptkbp:manufacturer |
gptkb:Schweitzer_Engineering_Laboratories
|
| gptkbp:operatingSystem |
110 VAC
125 VDC 220 VAC 250 VDC 48 VDC |
| gptkbp:protectedBy |
distribution line protection
transmission line protection |
| gptkbp:supportsProtocol |
gptkb:IEC_61850
gptkb:Modbus gptkb:DNP3 |
| gptkbp:type |
rack mount
panel mount |
| gptkbp:usedIn |
electric power systems
|
| gptkbp:bfsParent |
gptkb:Schweitzer_Engineering_Laboratories
|
| gptkbp:bfsLayer |
7
|