| SEL-352 | SEL-451 | SEL-487B | SEL-487V | |
|---|---|---|---|---|
| Applications—Breaker Failure Protection | ||||
| Number of Breakers | 1 (3-phase) | 2 (3-phase) | 21 (single-phase) | 1 (3-phase) |
| 50BF Breaker Failure Protection | ||||
| 50FO Flashover Protection | ||||
| 62 Breaker Failure Timer | ƒ | ƒ | ƒ | |
| Point-on-Wave Open/Close (Voltage and Ambient Air Temperature Compensation) | ||||
| Applications—Capacitor Bank Protection and Control | ||||
| Capacitor Bank Protection | ƒ* | |||
| Capacitor Bank Fault Location | ||||
| Capacitor Bank Unbalance Compensation (KSET Command) | ||||
| Capacitor Bank Settings Assistant Tool | ||||
| 59T IEC 60871-1 Inverse-Time Overvoltage | ||||
| 60P Phase Current Unbalance | ||||
| 60N Neutral Current Unbalance | ||||
| 87V Phase Voltage Differential | ||||
| 87VN Neutral Voltage Differential | ||||
| Automatic Voltage Control (Voltage/VAR/Power Factor) | ||||
| Time-of-Day Control | ||||
| Automatic Bank Sequencing Control | ||||
| Applications—Other | ||||
| Underfrequency Load Shedding | ƒ | ƒ | ||
| Undervoltage Load Shedding | ƒ | ƒ | ƒ | ƒ |
| Bus Differential | ||||
| General Protection | ||||
| 25 Synchronism Check | ||||
| 26 Insertion Resistor Thermal | ||||
| 27/59 Under-/Overvoltage | ||||
| 32/37P Power Elements | ƒ | |||
| 37 Undercurrent Elements | ƒ | ƒ | ||
| 46 Current Unbalance | ƒ | ƒ | ||
| 47 Voltage Unbalance | ƒ | ƒ | ||
| 49 IEC 60255-149 Thermal Model | ||||
| 49 Equipment Thermal Monitoring | ||||
| 50 (N,G) Overcurrent (Neutral, Ground) | ƒ | |||
| 50P Phase Overcurrent | ||||
| 50Q Negative-Sequence Time-Overcurrent | ||||
| 51 (N,G) Time-Overcurrent (Neutral, Ground) | ƒ | |||
| 51P Phase Time-Overcurrent | ||||
| 51Q Negative-Sequence Time-Overcurrent | ||||
| 67 Directional Overcurrent | ||||
| 81 Under-/Overfrequency | ||||
| 81R Frequency Rate of Change | ||||
| 87 Current Differential | ||||
| Single-Pole Trip/Close | ||||
| Instrumentation and Control | ||||
| Open-Pole Detection | ƒ | |||
| 79 Automatic Reclosing | ƒ | ƒ | ƒ | |
| Synchrophasor Real-Time Control | ||||
| 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 | ||||
| Fundamental Metering | ||||
| Demand Metering | ||||
| Energy Metering | ||||
| Harmonic Metering (Up to the 15th Harmonic) | ||||
| RMS Meter | ||||
| IEEE C37.118 Synchrophasors | ||||
| IEC 61850 | ||||
| IEC 61850 9-2LE Sampled Values | ||||
| Simple Network Time Protocol (SNTP) | ||||
| Parallel Redundancy Protocol (PRP) | ||||
| IEEE 1588 Precision Time Protocol Version 2 (PTPv2) | ||||
| Time-Domain Link (TIDL) Technology | ||||
| Built-In Web Server | ||||
| SEL-2600 RTD Module Communication | ||||
| Miscellaneous Features | ||||
| Connectorized (Quick Disconnect) Available | ||||
Standard Feature
Model Option
ƒ This function may be created using relay elements and timers
*The SEL-487V is preferred for capacitor bank protection and control applications.