Standard Feature Model Optionƒ Function
| Key Features | SEL-587Z | SEL-787Z |
|---|---|---|
| Applications | ||
| Breaker Failure Protection | ƒ | |
| Bus Differential | ||
| High-Impedance Bus Differential | ||
| Three-Phase Current Inputs | Common | 4 |
| Protection | ||
| 27/59 Under-/Overvoltage | ||
| 50 Overcurrent | ||
| 51 Time-Overcurrent | ||
| 50NAF/50PAF Arc-Flash Overcurrent | ||
| 87Z High-Impedance Differential | ||
| Three-Phase Differential Bus Zones | 1 | 1 |
| Instrumentation and Control | ||
| Nonvolatile Latch Control Switches | ||
| Multiple Settings Groups | ||
| IEC 61850 Edition 2 | ||
| Built-In Web Server | ||
| Simple Network Time Protocol (SNTP) | ||
| Rapid Spanning Tree Protocol (RSTP) | ||
| Mirrored Bits Communications | ||
| Parallel Redundancy Protocol (PRP) | ||
| IEEE 1588 Precision Time Protocol Version 2 (PTPv2) | ||
This table lists key features but is not comprehensive. For detailed information on each relay, visit the product pages: