| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 1970.4-2009 | English | 369 |
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Days<=3
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Maintenance Requirements of Power Supply for Telecommunication Stations/Sites. Part 4: Uninterruptible Power Systems
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YD/T 1970.4-2009
| Valid |
YD/T 1970.4-2009
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