Overview
The “Harmonic detection” element monitors one of the selected quantities, including DC offset, 2nd to 5th harmonic, or Total Harmonics Distortion (THD), that are present in the phase currents and ground current. It adds delay or blocking to prevent undesired operation. Harmonics are calculated and presented as a percent value relative to the fundamental frequency
phasor magnitude.
For more detailed information on “Harmonic 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 |
| C60, C95, D30, D60, F35, F60, G30, G60, L30, L90, N60, T35, T60 | DB00 | Harmonic Detection 1 Function | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | DB01 | Harmonic Detection 1 Source | 0 to 5 | — | 1 | F167 | 0 (SRC 1) |
| " | DB02 | Harmonic Detection 1 Harmonic | 0 to 5 | — | 1 | F682 | 1 (2nd) |
| " | DB03 | Harmonic Detection 1 Min Op Current | 0.01 to 1 | pu | 0.01 | F001 | 20 |
| " | DB04 | Harmonic Detection 1 Max Op Current | 1 to 30 | pu | 0.01 | F001 | 500 |
| " | DB05 | Harmonic Detection 1 Phases for Operation | 0 to 3 | — | 1 | F689 | 0 (ANY ONE) |
| " | DB06 | Harmonic Detection 1 Pickup | 2 to 100 | % | 0.1 | F001 | 200 |
| " | DB07 | Harmonic Detection 1 Ground Min Op Current | 0.1 to 1 | pu | 0.01 | F001 | 20 |
| " | DB08 | Harmonic Detection 1 Ground Max Op Current | 1 to 30 | pu | 0.01 | F001 | 100 |
| " | DB09 | Harmonic Detection 1 Ground Max Op Current | 0.1 to 100 | % | 0.1 | F001 | 200 |
| " | DB0A | Harmonic Detection 1 Pickup Delay | 0 to 600 | s | 0.01 | F001 | 0 |
| " | DB0B | Harmonic Detection 1 Block | 0 to 4294967295 | — | 1 | F300 | 0 |
| " | DB0D | Harmonic Detection 1 Events | 0 to 1 | — | 1 | F102 | 0 (Disabled) |
| " | DB0E | Harmonic Detection 1 Target | 0 to 2 | — | 1 | F109 | 0 (Self-reset) |
| " | DB0F | …Repeated for Harmonic Detection 2 | |||||
| " | DB1E | …Repeated for Harmonic Detection 3 | |||||
| " | DB2D | …Repeated for Harmonic Detection 4 | |||||
| " | DB3C | …Repeated for Harmonic Detection 5 | |||||
| " | DB4B | …Repeated for Harmonic Detection 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 | ||||||
| F682 | 0 = DC, 1 = 2nd, 2 = 3rd, 3 = 4th, 4 = 5th, 5 = THD | ||||||
| F689 | 0 = ANY ONE, 1 = ANY TWO, 2 = ALL THREE, 3 = AVERAGE | ||||||
Logics & highlights
Harmonic detection logic
