This document is the security manual for H3C E152 Ethernet switch, which introduces the security precautions that must be followed during installation and maintenance of the switch. The document provides safety information on electrical safety, fuses, radiation, and emphasizes that operators must have basic safety operation skills.
This manual outlines the safety precautions that must be followed when installing, maintaining, or operating the H3C E152 Ethernet switch. It emphasizes reading the safety sections before any work and ensuring that only trained personnel perform installation and maintenance.
Key safety topics include grounding requirements, ventilation clearance, high‑voltage handling, cable specifications, lightning protection, fuse replacement, and laser radiation protection. The document also lists the symbols used to indicate caution, warning, and danger throughout the manual. This manual is written in Chinese.
| Minimum grounding wire cross‑section | ≥ 0.75 mm² |
|---|---|
| Minimum clearance from wall or objects | ≥ 5 cm |
| AC power cable size | 0.75 mm² or 18 AWG |
| Laser protection class | Class 1 |
| Power system type | TN |
| Fuse replacement requirement | Same model and specifications |
The grounding wire must have a cross‑section of at least 0.75 mm².
It should be at least 5 cm away from any wall or object that could obstruct the ventilation openings.
The device is designed for a TN power system.
Use a cable of 0.75 mm² or 18 AWG for the AC power connection.