| Features | SEL-352 | SEL-451 | SEL-487B | SEL-487V |
|---|---|---|---|---|
| Applications | ||||
| Breaker Failure Protection, Number of Three-Phase Breakers | 1 | 2 | 7 | 1 |
| Bus Differential | ||||
| Shunt Capacitor Bank Protection | ƒ | |||
| Underfrequency Load Shedding | ƒ | ƒ | ||
| Undervoltage Load Shedding | ƒ | ƒ | ƒ | ƒ |
| Protection | ||||
| 25 Synchronism Check | ||||
| 27/59 Under-/Overvoltage | ||||
| 32/37 Power Elements | ƒ | ƒ | ||
| 46 Current Unbalance | ƒ | ƒ | ||
| 47 Voltage Unbalance | ƒ | ƒ | ƒ | |
| 49 Equipment Thermal Monitoring | ƒ | ƒ | ||
| 50FO Flashover Protection | ||||
| 50 (N,G) Overcurrent (Neutral, Ground) | ||||
| 50P Phase Overcurrent | ||||
| 50Q Negative-Sequence Time-Overcurrent | ||||
| 51 (N,G) Time-Overcurrent (Neutral, Ground) | ||||
| 51P Phase Time-Overcurrent | ||||
| 51Q Negative-Sequence Time-Overcurrent | ||||
| 60 (N,P) Current Unbalance (Neutral, Phase) | ||||
| 67 Directional Overcurrent | ||||
| 81 Under-/Overfrequency | ||||
| 81R Frequency Rate of Change | ||||
| 87 Current Differential | ||||
| 87V Voltage Differential | ƒ | |||
| Single-Pole Trip/Close | ||||
| Instrumentation and Control | ||||
| Open-Pole Detection | ƒ | ƒ | ||
| 79 Automatic Reclosing | ƒ | ƒ | ƒ | |
| SELogic Control Equations | ||||
| Voltage Check on Closing | ||||
| Nonvolatile Latch Control Switches | ||||
| SELogic Remote/Local Control Switches | ||||
| Display Points | ||||
| Multiple Settings Groups | ||||
| Substation Battery Monitor | ||||
| Breaker Wear Monitor | ||||
| Voltage Sag, Swell, and Interruption Recording | ||||
| Event Report (Multicycle Data) | ||||
| Sequential Events Recorder | ||||
| Instantaneous Meter | ||||
| Demand Meter | ||||
| Harmonic Metering | ||||
| IEEE C37.118 Synchrophasors | ||||
| IEC 61850 | ||||
| Built-In Web Server | ||||
| Simple Network Time Protocol (SNTP) | ||||
| Parallel Redundancy Protocol (PRP) | ||||
| IEEE 1588 Precision Time Protocol Verion 2 (PTPv2) | ||||
| Time-Domain Link (TIDL™) Technology | ||||
| SEL-2600 RTD Module Communications | ||||
| Miscellaneous Features | ||||
| Connectorized (Quick Disconnect) Available | ||||
| Synchrophasor Real-Time Control | ||||
Standard Feature
Model Option
ƒ This function may be created using relay elements and timers.