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| Item | Test end | Technical requirement | Test conditions |
| No-load current | 1~4 | ≤6.5mA | 220Vac/50Hz |
| No-load voltage | 6~8 | 12.5±0.5V | |
| On-load voltage | 6~8 | 9.5±0.5V | 30mA |
| Dielectric strength | N1 strength to N2 | Apply AC3.0KV with no abnormality | 1mA、1min |