Overview
The operating characteristic of the “Loss of excitation” element is shaped out of two offset mho circles shifted down along the imaginary axis. The stage 1 characteristic is typically set to detect a loss of excitation for load conditions of 30% of the nominal or higher. The stage 2 characteristic is typically set to detect a loss of excitation for all load conditions.
For more detailed information on “Loss of excitation” element, refer to GE, Universal Relay (UR) family of products, Version 8.0x manuals.
To view other supported elements, click here.
Setting Parameters
Modbus memory map for Setting parameters
| Products | Hex address | Register name | Range | Units | Step | Format | Default |
| G30, G60 | 4123 | Loss Of Excitation Function | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 4124 | Loss Of Excitation Signal Source | 0 to 5 | — | 1 | F167 | 0 (SRC 1) |
| " | 4125 | Loss Of Excitation Center 1 | 0.1 to 300 | ohm | 0.01 | F001 | 1000 |
| " | 4126 | Loss Of Excitation Radius 1 | 0.1 to 300 | ohm | 0.01 | F001 | 800 |
| " | 4127 | Loss Of Excitation UV Supervision Enable 1 | 0 to 1 | — | 1 | F102 | 1 (Enabled) |
| " | 4128 | Loss Of Excitation Pickup Delay 1 | 0 to 65.535 | s | 0.001 | F001 | 50 |
| " | 4129 | Loss Of Excitation Center 2 | 0.1 to 300 | ohm | 0.01 | F001 | 1200 |
| " | 412A | Loss Of Excitation Radius 2 | 0.1 to 300 | ohm | 0.01 | F001 | 1000 |
| " | 412B | Loss Of Excitation UV Supervision Enable 2 | 0 to 1 | — | 1 | F102 | 1 (Enabled) |
| " | 412C | Loss Of Excitation Pickup Delay 2 | 0 to 65.535 | s | 0.001 | F001 | 500 |
| " | 412D | Loss Of Excitation UV Supervision | 0 to 1.25 | pu | 0.001 | F001 | 700 |
| " | 412E | Loss Of Excitation Block | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 4130 | Loss Of Excitation Target | 0 to 2 | — | 1 | F109 | 0 (Self-reset) |
| " | 4131 | Loss Of Excitation Events | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 4132 | Reserved (5 items) | 0 to 65535 | — | 1 | F001 | 0 |
| F102 | 0 = Disabled, 1 = Enabled | ||||||
| F109 | 0 = Self-reset, 1 = Latched, 2 = Disabled | ||||||
| F167 | 0 = SRC 1, 1 = SRC 2, 2 = SRC 3, 3 = SRC 4, 4 = SRC 5, 5 = SRC 6 | ||||||
| F300 | 0 : Off (This is boolean FALSE value), 1 : On (This is boolean TRUE value) | ||||||
Logics & highlights
Loss of excitation operating characteristics
Loss of excitation logic
