| Features | SEL-387 | SEL-487B | SEL-487E | SEL-587Z |
|---|---|---|---|---|
| Applications | ||||
| Breaker Failure Protection | ƒ | ƒ | ||
| Bus Differential | ƒ | |||
| Transformer and Machine Current Differential | ||||
| High-Impedance Bus Differential | ||||
| Low-Impedance Bus Differential | ||||
| Three-Phase Current Inputs | 4 | 7/ 10/ 21 ‡ | 5 | Com- mon |
| Three-Phase Voltage Inputs | 1 | 2 | ||
| Protection | ||||
| 27/59 Under-/Overvoltage | ||||
| 46 Current Unbalance | ƒ | |||
| 47 Voltage Unbalance | ƒ | |||
| 50 (N,G) Overcurrent (Neutral, Ground) | ||||
| 50P Phase Overcurrent | ||||
| 50Q Negative-Sequence Overcurrent | ||||
| 51 (N,G) Time-Overcurrent (Neutral, Ground) | ||||
| 51P Phase Time-Overcurrent | ||||
| 51Q Negative-Sequence Time-Overcurrent | ||||
| 87 Current Differential | ||||
| 87Z High-Impedance Differential | ||||
| Single-Pole Trip/Close | ||||
| Three-Phase Differential Bus Zones | 1 | 2/ 3/ 6 ‡ | 1 | 1 |
| Check Zones | 3 | |||
| Instrumentation and Control | ||||
| 79 Automatic Reclosing | ƒ | ƒ | ||
| Dynamic Zone Selection | ||||
| SELogic Control Equations | ||||
| Nonvolatile Latch Control Switches | ||||
| SELogic Remote/Local Control Switches | ||||
| Display Points | ||||
| Multiple Settings Groups | ||||
| Substation Battery Monitor | ||||
| Breaker Wear Monitor | ||||
| Event Report (Multicycle Data) | ||||
| Sequential Events Recorder | ||||
| Instantaneous Meter | ||||
| Demand Meter | ||||
| Through-Fault Monitor | ||||
| IEEE C37.118 Synchrophasors | ||||
| Synchrophasor Real-Time Control | ||||
| IEC 61850 | ||||
| Built-In Web Server | ||||
| Simple Network Time Protocol (SNTP) | ||||
| Mirrored Bits Communications | ||||
| Parallel Redundancy Protocol (PRP) | ||||
| IEEE 1588 Precision Time Protocol Verion 2 (PTPv2) | ||||
| Time-Domain Link (TIDL™) Technology | ||||
| Miscellaneous Features | ||||
| Connectorized (Quick Disconnect) Available | ||||
Standard Feature
Model Option
ƒ This function may be created using settings
‡ 1/2/3 Relay Application