Overview
The “Disturbance detector” element (50DD) is an 87L-dedicated sensitive current disturbance detector that is used to detect any disturbance on the protected system. It is intended for such functions as trip output supervision and starting oscillography.
For more detailed information on “Disturbance detector” element, refer to GE, Universal Relay (UR) family of products, Version 8.0x manuals.
To see other supported elements, click here.
Setting Parameters
Modbus memory map for Setting parameters
| Products | Hex address | Register name | Range | Units | Step | Format | Default |
| L30, L90 | 3D2D | 50DD Function | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 3D2E | 50DD Non Current Supervision | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 3D30 | 50DD Control Logic | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 3D32 | 50DD Logic Seal In | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 3D34 | 50DD Events | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 3D35 | 50DD Seal-In by 87LG | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 3D36 | 50DD Voltage Supv | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| F102 | 0 = Disabled, 1 = Enabled | ||||||
Logics & highlights
Disturbance detector logic
