| Fault type | LG | LL | LLL | No fault | ||||
| Flag | A | B | C | AB | BC | CA | ABC | |
| Ratio A | √ | × | × | √ | × | √ | √ | × |
| Ratio B | × | √ | × | √ | √ | × | √ | × |
| Ratio C | × | × | √ | × | √ | √ | √ | × |
| V0 | √ | √ | √ | × | × | × | √ × | × |