 | Zhejiang Wanma Group Co., Ltd | | Product Detail | Crosslinked PE cable-purpose insulating compounds | Description:
| Product Class : Electronic Material·Insulating Material
The crosslinked Pe cable-purpose insulating compounds are made mainly from LDPE together with additives such as anti-oxidant and peroxide crosslinking agent through mixing, plasticization and granulation. PreSently YJ-10, YJ-35 and YJWH-10 are available, with their applications and performances as follows:
| NO. | Model | Name | Highest working temperature allowed-by current carrying / wire coreoC | Usage | | 1 | YJ-10 | 10KV crosslinked PE oable-purpose insulating compounds | 90oC | Insulating layer for crosslinked PE cable up to 10KV | | 2 | YJ-35 | 35KV crosslinked PE oable-purpose insulating compounds | 90oC | Insulating layer for crosslinked PE cable up to 35KV | | 3 | YJWH-10 | Overhead cable-purpose black crosslinked PE insulating compounds | 90oC | Insulating layer for crosslinked PE overhead caable up to 10KV |
Specifications of performances:| Index \ Model | Unit | YJ-10 | *YJ-35 | **YJWH-10 | | Tensile strecth ≥ | Mpa | 17.0 | 17.0 | 14.5 | | Elongation at break ≥ | % | 420 | 420 | 400 | | Brittle temperature ≤ | oC | -76 | -76 | -76 | | Aging in 135oC air oven for 168 hours variation ratio | Variation ratio of tensile strength ≤ | % | ±20 | ±20 | ±20 | | Variation ratio of elongation at break ≤ | % | ±20 | ±20 | ±20 | | Thermal stretching under 200oC and 0.2Mpa for15 minutes | ≤ | % | 80 | 80 | 80 | | % | 5 | 5 | 5 | | 50HZ、20oC | Dielectric constant ≤ | | 2.30 | 2.30 | | | Dielectric loss tangent ≤ | | 0.0005 | 0.0005 | 0.001 | | Volume resistivity 1KV、20oC ≥ | Ω·m | 1x1014 | 1x1014 | 5x1013 | | Dielectric strength 、20oC ≥ | Mv/m | 35 | 35 | 30 | | Gel content ≥ | % | 80 | 80 | | | Environmental stress cracking resistance ≥ | h | | | 1000 |
Requirement of foreign particles for YJ-35:| Foreign particle size ( mm ) | Particle ( C1 ) | Particle numbers ( C2 ) | | 0.12~0.25 | 10 | 15 | | 0.26~0.50 | 3 | 6 | | 0.51~1.00 | 0 | 1 | | >1.00 | 0 | 0 |
If measured particle numbers are below C1 , the product is qualified and above
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