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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| DL 482-1992 |
Static zero-sequence current direction protection device Technical conditions 静态零序电流方向保护装置.技术条件 |
China Electricity & Power
Standards Static zero sequence |
 English PDF |
| DL 484-1992 |
(Static compensated zero sequence reactance relay. Technical conditions) |
China Electricity & Power
Standards Static zero sequence |
English PDF |
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