| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| DL/T 557-2005 | English | 519 |
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Days<=3
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Insulators of ceramic or glass material overhead lines with a nominal voltage greater than 1000V-impulse puncture tests in air
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DL/T 557-2005
| Obsolete |
DL/T 557-2005
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