Overview
The “Loss of voltage check (LOVPTUV )” function is suitable for use in networks with an automatic system restoration function. LOVPTUV issues a three-pole trip command to the circuit breaker, if all three phase voltages fall below the set value for a time longer than the set time and the circuit breaker remains closed. The operation of LOVPTUV is supervised by the fuse failure supervision FUFSPVC.
For more detailed information on “Loss of voltage check (LOVPTUV )” function, refer to ABB, Relion 670 Series manuals.
To see other supported functions, click here.
Function Identification
| Function description | IEC 61850 identification |
IEC 60617 identification |
ANSI/IEEE C37.2 device number |
| Loss of voltage check | LOVPTUV | – | 27 |
Signals & Setting Parameters
LOVPTUV function block
LOVPTUV Input signals
| LOVPTUV Input signals | |||
| Name | Type | Default | Description |
| U3P | GROUP SIGNAL | – | Voltage connection |
| BLOCK | BOOLEAN | 0 | Block the all outputs |
| CBOPEN | BOOLEAN | 0 | Circuit breaker open |
| VTSU | BOOLEAN | 0 | Block from voltage circuit supervision |
LOVPTUV Output signals
| LOVPTUV Output signals | |||
| Name | Type | Description | |
| TRIP | BOOLEAN | Trip signal | |
| START | BOOLEAN | Start signal | |
LOVPTUV Group settings (basic)
| LOVPTUV Group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| Operation | Off On |
– | – | Off | Operation Off/On |
| UPE | 1 – 100 | %UB | 1 | 70 | Operate voltage in % of base voltage UBase |
| tTrip | 0.000 – 60.000 | s | 0.001 | 7.000 | Operate time delay |
LOVPTUV Group settings (advanced)
| LOVPTUV Group settings (advanced) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| tPulse | 0.050 – 60.000 | s | 0.001 | 0.150 | Duration of TRIP pulse |
| tBlock | 0.000 – 60.000 | s | 0.001 | 5.000 | Time delay to block when all 3ph voltages are not low |
| tRestore | 0.000 – 60.000 | s | 0.001 | 3.000 | Time delay for enable the function after restoration |
LOVPTUV Non group settings (basic)
| LOVPTUV Non group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| GlobalBaseSel | 1 – 12 | – | 1 | 1 | Selection of one of the Global Base Value groups |
Logics & highlights
Simplified diagram of Loss of voltage check LOVPTUV
