Overview
The “Interlocking for transformer bay (AB_TRAFO)” function is used for a transformer bay connected to a double busbar arrangement according to the below Switchyard layout. The function is used when there is no disconnector between circuit breaker and transformer. Otherwise, the interlocking for line bay (ABC_LINE) function can be used. This function can also be used in single busbar arrangements.
For more detailed information on “Interlocking for transformer bay (AB_TRAFO)” 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 |
| Interlocking for transformer bay | AB_TRAFO | – | 3 |
Signals
AB_TRAFO function block
AB_TRAFO Input signals
| AB_TRAFO Input signals | |||
| Name | Type | Default | Description |
| QA1_OP | BOOLEAN | 0 | QA1 is in open position |
| QA1_CL | BOOLEAN | 0 | QA1 is in closed position |
| QB1_OP | BOOLEAN | 0 | QB1 is in open position |
| QB1_CL | BOOLEAN | 0 | QB1 is in closed position |
| QB2_OP | BOOLEAN | 0 | QB2 is in open position |
| QB2_CL | BOOLEAN | 0 | QB2 is in closed position |
| QC1_OP | BOOLEAN | 0 | QC1 is in open position |
| QC1_CL | BOOLEAN | 0 | QC1 is in closed position |
| QC2_OP | BOOLEAN | 0 | QC2 is in open position |
| QC2_CL | BOOLEAN | 0 | QC2 is in closed position |
| QB3_OP | BOOLEAN | 0 | QB3 is in open position |
| QB3_CL | BOOLEAN | 0 | QB3 is in closed position |
| QB4_OP | BOOLEAN | 0 | QB4 is in open position |
| QB4_CL | BOOLEAN | 0 | QB4 is in closed position |
| QC3_OP | BOOLEAN | 0 | QC3 is in open position |
| QC3_CL | BOOLEAN | 0 | QC3 is in closed position |
| QC11_OP | BOOLEAN | 0 | QC11 on busbar WA1 is in open position |
| QC11_CL | BOOLEAN | 0 | QC11 on busbar WA1 is in closed position |
| QC21_OP | BOOLEAN | 0 | QC21 on busbar WA2 is in open position |
| QC21_CL | BOOLEAN | 0 | QC21 on busbar WA2 is in closed position |
| BC_12_CL | BOOLEAN | 0 | A bus coupler connection exists between busbar WA1 and WA2 |
| VP_BC_12 | BOOLEAN | 0 | Status of the bus coupler app. between WA1 and WA2 are valid |
| EXDU_ES | BOOLEAN | 0 | No transm error from any bay containing earthing switches |
| EXDU_BC | BOOLEAN | 0 | No transmission error from any bus coupler bay |
| QA1_EX1 | BOOLEAN | 0 | External condition for apparatus QA1 |
| QA1_EX2 | BOOLEAN | 0 | External condition for apparatus QA1 |
| QA1_EX3 | BOOLEAN | 0 | External condition for apparatus QA1 |
| QB1_EX1 | BOOLEAN | 0 | External condition for apparatus QB1 |
| QB1_EX2 | BOOLEAN | 0 | External condition for apparatus QB1 |
| QB1_EX3 | BOOLEAN | 0 | External condition for apparatus QB1 |
| QB2_EX1 | BOOLEAN | 0 | External condition for apparatus QB2 |
| QB2_EX2 | BOOLEAN | 0 | External condition for apparatus QB2 |
| QB2_EX3 | BOOLEAN | 0 | External condition for apparatus QB2 |
AB_TRAFO Output signals
| AB_TRAFO Output signals | |||
| Name | Type | Description | |
| QA1CLREL | BOOLEAN | Closing of QA1 is allowed | |
| QA1CLITL | BOOLEAN | Closing of QA1 is forbidden | |
| QB1REL | BOOLEAN | Switching of QB1 is allowed | |
| QB1ITL | BOOLEAN | Switching of QB1 is forbidden | |
| QB2REL | BOOLEAN | Switching of QB2 is allowed | |
| QB2ITL | BOOLEAN | Switching of QB2 is forbidden | |
| QC1REL | BOOLEAN | Switching of QC1 is allowed | |
| QC1ITL | BOOLEAN | Switching of QC1 is forbidden | |
| QC2REL | BOOLEAN | Switching of QC2 is allowed | |
| QC2ITL | BOOLEAN | Switching of QC2 is forbidden | |
| QB1OPTR | BOOLEAN | QB1 is in open position | |
| QB1CLTR | BOOLEAN | QB1 is in closed position | |
| QB2OPTR | BOOLEAN | QB2 is in open position | |
| QB2CLTR | BOOLEAN | QB2 is in closed position | |
| QB12OPTR | BOOLEAN | QB1 or QB2 or both are in open position | |
| QB12CLTR | BOOLEAN | QB1 and QB2 are not in open position | |
| VPQB1TR | BOOLEAN | Switch status of QB1 is valid (open or closed) | |
| VPQB2TR | BOOLEAN | Switch status of QB2 is valid (open or closed) | |
| VPQB12TR | BOOLEAN | Switch status of QB1 and QB2 are valid (open or closed) | |
Logics & highlights
AB_TRAFO Logic diagram
