This manual introduces the installation, operation, maintenance, etc. information of S&C SMU-20 fuse tube unit.
This manual provides detailed installation, replacement, and maintenance procedures for the SMU-20 melt tube unit used with the SMD-20 outdoor power fuse. It is intended for trained professionals familiar with high‑voltage equipment and includes safety warnings, handling instructions, and component checks.
The document also covers storage requirements, protective measures such as rain‑proof end caps, and surface‑treatment procedures for corrosion prevention. Contact information for S&C support is provided for label replacement and additional documentation. This manual is written in Chinese.
| Rated Voltage | 7.2 kV / 34.5 kV |
|---|---|
| Fuse Element Material | Silver or nickel‑chromium |
| Rain‑proof End Cap Required | Yes, install on the tube end |
The manual uses symbols such as “危险” for the most severe hazards that could cause serious injury or death, and “注意” for less severe warnings that could cause minor injury or product damage.
The melt tube unit should be kept in a dry environment and only removed from its packaging when needed for installation.
No. Once the melt tube unit has melted (fused), it cannot be repaired and must be replaced with a new unit.