1. First, Consider Mechanical Protection Requirements
When the cable needs to withstand mechanical forces is the key criterion for choosing
armored electrical cable. In locations with a risk of crushing, such as mines and tunnels,
or in environments subject to unexpected impact, such as construction sites,layer
effectively protects against external forces. Statistics show that the use of armored
cable can reduce mechanical failure rates by over 60%.
2. Electromagnetic Interference Environments are a Typical Scenario
In areas with strong electromagnetic interference, such as substations and signal base
stations, armored cable is essential. The steel armor layer creates a Faraday cage effect,
increasing interference signal attenuation to 90%, a performance advantage unattainable
with ordinary cables.
3. The Preferred Option for Direct Burial Projects
When direct burial is required, choosing armored electrical cable directly impacts the
project's lifespan. Armored structures protect against threats such as soil corrosion
and rodent gnawing, extending their average service life by 8-10 years compared to
unarmored cables.
4. Underground Corrosive Environments
When is armored electrical cable used for corrosion protection? In areas with soil resistivity
less than 25Ω·m, the combination of 62-type aluminum armor and XLPE insulation extends
its service life to 40 years. Its salt spray resistance has been verified in the Qingdao
Undersea Tunnel project.
5. Biohazard Risk Areas
When is armored electrical cable used to prevent bioerosion? In tropical rainforest projects,
armoring reduced the monkey population damage rate from 23% to 0.7% (data from the
East Coast Rail Link project in Malaysia).
6. Mandatory requirements in special industry regulations
National standards mandate the use of armored electrical cable in special locations such
as oil chemical parks. For example, GB50217 explicitly stipulates that double-layer armor
must be used in explosion-hazardous areas, a key safety requirement.
Conclusion: Decision Tree for When to Use armored electrical cable
The above scenario analysis shows that the decision to use armored electrical cable
depends on three key factors: protection level, environmental characteristics, and
industry standards. It is recommended that a "risk assessment → environmental testing
→ standard comparison" decision-making process → standard comparison" decision-
making process the effectiveness of armored protection.
Core Question: When to use armored electrical cable is not just a cost issue; it's also a
safety decision.
