Overview
The “Instantaneous overcurrent” element is used primarily for supervising main protection trip commands on a per-breaker basis (that is, differential, breaker failure, and end fault protection). It responds to a single-phase current. Instantaneous Overcurrent supervision can also be used to prevent tripping feeders with low currents or for definite time backup protection.
For more detailed information on “Instantaneous overcurrent” 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 |
| B90 | 5137 | Instantaneous Overcurrent 1 Function | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 5138 | Instantaneous Overcurrent 1 CT | 0 to 23 | — | 1 | F400 | 0 |
| " | 5139 | Instantaneous Overcurrent 1 Pickup | 0.005 to 30 | pu | 0.001 | F001 | 1200 |
| " | 513A | Instantaneous Overcurrent 1 Pickup Delay | 0 to 65.535 | s | 0.001 | F001 | 0 |
| " | 513B | Instantaneous Overcurrent 1 Reset Delay | 0 to 65.535 | s | 0.001 | F001 | 0 |
| " | 513C | Instantaneous Overcurrent 1 Block | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | 513E | Instantaneous Overcurrent 1 Target | 0 to 2 | — | 1 | F109 | 0 (Self-reset) |
| " | 513F | Instantaneous Overcurrent 1 Events | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | 5140 | Reserved | 0 to 65535 | — | 1 | F001 | 0 |
| " | 5141 | …Repeated for Instantaneous Overcurrent 2 | |||||
| " | 514B | …Repeated for Instantaneous Overcurrent 3 | |||||
| " | 5155 | …Repeated for Instantaneous Overcurrent 4 | |||||
| " | 515F | …Repeated for Instantaneous Overcurrent 5 | |||||
| " | 5169 | …Repeated for Instantaneous Overcurrent 6 | |||||
| " | 5173 | …Repeated for Instantaneous Overcurrent 7 | |||||
| " | 517D | …Repeated for Instantaneous Overcurrent 8 | |||||
| " | 5187 | …Repeated for Instantaneous Overcurrent 9 | |||||
| " | 5191 | …Repeated for Instantaneous Overcurrent 10 | |||||
| " | 519B | …Repeated for Instantaneous Overcurrent 11 | |||||
| " | 51A5 | …Repeated for Instantaneous Overcurrent 12 | |||||
| " | 51AF | …Repeated for Instantaneous Overcurrent 13 | |||||
| " | 51B9 | …Repeated for Instantaneous Overcurrent 14 | |||||
| " | 51C3 | …Repeated for Instantaneous Overcurrent 15 | |||||
| " | 51CD | …Repeated for Instantaneous Overcurrent 16 | |||||
| " | 51D7 | …Repeated for Instantaneous Overcurrent 17 | |||||
| " | 51E1 | …Repeated for Instantaneous Overcurrent 18 | |||||
| " | 51EB | …Repeated for Instantaneous Overcurrent 19 | |||||
| " | 51F5 | …Repeated for Instantaneous Overcurrent 20 | |||||
| " | 51FF | …Repeated for Instantaneous Overcurrent 21 | |||||
| " | 5209 | …Repeated for Instantaneous Overcurrent 22 | |||||
| " | 5213 | …Repeated for Instantaneous Overcurrent 23 | |||||
| " | 521D | …Repeated for Instantaneous Overcurrent 24 |
| F102 | 0 = Disabled, 1 = Enabled | ||||||
| F109 | 0 = Self-reset, 1 = Latched, 2 = Disabled | ||||||
| F300 | 0 : Off (This is boolean FALSE value), 1 : On (This is boolean TRUE value) | ||||||
| F400 | 0: Card 1 Contact 1 to 4, 1: Card 1 Contact 5 to 8, 2: Card 2 Contact 1 to 4, 3: Card 2 Contact 5 to 8, 4: Card 3 Contact 1 to 4, 5: Card 3 Contact 5 to 8 | ||||||
Logics & highlights
Instantaneous overcurrent logic
