Okay, here is the translation following your instructions: Direct Current Transmission Line Live-line Operation Technology Guideline DL/T881-2004

Author: National Development and Reform Commission of the People's Republic of China
Publisher:
Publish Date: 2004-06-01
Features: This standard specifies the operating methods, minimum safe operating distance and combined clearance, minimum effective insulation length of insulating tools, safety measures for operations, and testing, storage of tools, etc.
This standard applies to live-line maintenance and operation tasks for DC transmission lines with voltages ranging from ±500kV to ±1000m in altitude.

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