Overview
The aim of the “Fuse failure supervision (FUFSPVC)” function is to block voltage measuring functions at failures in the secondary circuits between the voltage transformer and the IED in order to avoid inadvertent operations that otherwise might occur.
For more detailed information on “Fuse failure supervision (FUFSPVC)” 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 |
| Fuse failure supervision | FUFSPVC | – | – |
Signals & Setting Parameters
FUFSPVC function block
FUFSPVC Input signals
| FUFSPVC Input signals | |||
| Name | Type | Default | Description |
| I3P | GROUP SIGNAL | – | Current connection |
| U3P | GROUP SIGNAL | – | Voltage connection |
| BLOCK | BOOLEAN | 0 | Block of function |
| CBCLOSED | BOOLEAN | 0 | Active when circuit breaker is closed |
| MCBOP | BOOLEAN | 0 | Active when external MCB opens protected voltage circuit |
| DISCPOS | BOOLEAN | 0 | Active when line disconnector is open |
| BLKTRIP | BOOLEAN | 0 | Blocks operation of function when active |
FUFSPVC Output signals
| FUFSPVC Output signals | |||
| Name | Type | Description | |
| BLKZ | BOOLEAN | Start of current and voltage controlled function | |
| BLKU | BOOLEAN | General start of function | |
| 3PH | BOOLEAN | Three-phase start of function | |
| DLD1PH | BOOLEAN | Dead line condition in at least one phase | |
| DLD3PH | BOOLEAN | Dead line condition in all three phases | |
| STDI | BOOLEAN | Common start signal of sudden change in current | |
| STDIL1 | BOOLEAN | Start signal of sudden change in current, phase L1 | |
| STDIL2 | BOOLEAN | Start signal of sudden change in current, phase L2 | |
| STDIL3 | BOOLEAN | Start signal of sudden change in current, phase L3 | |
| STDU | BOOLEAN | Common start signal of sudden change in voltage | |
| STDUL1 | BOOLEAN | Start signal of sudden change in voltage, phase L1 | |
| STDUL2 | BOOLEAN | Start signal of sudden change in voltage, phase L2 | |
| STDUL3 | BOOLEAN | Start signal of sudden change in voltage, phase L3 | |
FUFSPVC Group settings (basic)
| FUFSPVC Group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| Operation | Off On |
– | – | Off | Operation Off / On |
| OpMode | Off UNsINs UZsIZs UZsIZs OR UNsINs UZsIZs AND UNsINs OptimZsNs |
– | – | UZsIZs | Operating mode selection |
| 3U0> | 1 – 100 | %UB | 1 | 30 | Operate level of residual overvoltage element in % of UBase |
| 3I0< | 1 – 100 | %IB | 1 | 10 | Operate level of residual undercurrent element in % of IBase |
| 3U2> | 1 – 100 | %UB | 1 | 30 | Operate level of neg seq overvoltage element in % of UBase |
| 3I2< | 1 – 100 | %IB | 1 | 10 | Operate level of neg seq undercurrent element in % of IBase |
| OpDUDI | Off On |
– | – | Off | Operation of change based function Off/On |
| DU> | 1 – 100 | %UB | 1 | 60 | Operate level of change in phase voltage in % of UBase |
| DI< | 1 – 100 | %IB | 1 | 15 | Operate level of change in phase current in % of IBase |
| UPh> | 1 – 100 | %UB | 1 | 70 | Operate level of phase voltage in % of UBase |
| IPh> | 1 – 100 | %IB | 1 | 10 | Operate level of phase current in % of IBase |
| SealIn | Off On |
– | – | On | Seal in functionality Off/On |
| USealln< | 1 – 100 | %UB | 1 | 70 | Operate level of seal-in phase voltage in % of UBase |
| IDLD< | 1 – 100 | %IB | 1 | 5 | Operate level for open phase current detection in % of IBase |
| UDLD< | 1 – 100 | %UB | 1 | 60 | Operate level for open phase voltage detection in % of UBase |
FUFSPVC Non group settings (basic)
| FUFSPVC 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 |
FUFSPVC Monitored data
| FUFSPVC Monitored data | ||||
| Name | Type | Values (Range) | Unit | Description |
| 3I0 | REAL | – | A | Magnitude of zero sequence current |
| 3I2 | REAL | – | A | Magnitude of negative sequence current |
| 3U0 | REAL | – | kV | Magnitude of zero sequence voltage |
| 3U2 | REAL | – | kV | Magnitude of negative sequence voltage |
Logics & highlights
Simplified logic diagram for sequence detection part
Simplified logic diagram for the DU/DI detection part
Internal signals DeltaU or DeltaI and the corresponding output signals
Simplified logic diagram for Dead Line detection part
Simplified logic diagram for fuse failure supervision function, Main logic
