Overview
The “Broken conductor detection” element detects a transmission line broken conductor condition or a single-pole breaker malfunction condition by checking the phase current input signals and the I_2 / I_1 ratio. The intent is to detect a single phase broken conductor only. As such, two-phase or three-phase broken conductors cannot be detected.
For more detailed information on “Broken conductor detection” 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 |
| D30, D60, F35, F60, L30, L60, L90 | 4E69 | Broken Conductor 1 Function | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 4E6A | Broken Conductor 1 Source | 0 to 5 | — | 1 | F167 | 0 (SRC 1) |
| " | 4E6B | Broken Conductor 1 I2/I1 Ratio | 20 to 100 | % | 0.1 | F001 | 200 |
| " | 4E6C | Broken Conductor 1 I1 Minimum | 0.05 to 1 | pu | 0.01 | F001 | 10 |
| " | 4E6D | Broken Conductor 1 I1 Maximum | 0.05 to 5 | pu | 0.01 | F001 | 150 |
| " | 4E6E | Broken Conductor 1 Pickup Delay | 0 to 65.535 | s | 0.001 | F001 | 20000 |
| " | 4E6F | Broken Conductor 1 Block | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 4E71 | Broken Conductor 1 Target | 0 to 2 | — | 1 | F109 | 0 (Self-reset) |
| " | 4E72 | Broken Conductor 1 Events | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 4E73 | Reserved (2 items) | — | — | — | F001 | 0 |
| " | 4E75 | …Repeated for Broken Conductor 2 | |||||
| F35 | 4E81 | …Repeated for Broken Conductor 3 | |||||
| " | 4E8D | …Repeated for Broken Conductor 4 | |||||
| " | 4E99 | …Repeated for Broken Conductor 5 | |||||
| " | 4EA5 | …Repeated for Broken Conductor 6 |
| 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 | ||||||
Logics & highlights
Broken conductor detection logic
