National standard：YD/T 840-1996
This series of products are suitable for indoor and outdoor telephone wiring, doorbell intercom system wiring
Sheath layer: material-PVC;
Insulation layer: material-PP;
Conductor: material-oxygen-free copper.
| Product Standards | Product number | Product Specifications | Number of conductors N | Conductor diameter mm | Insulation outer diameter mm | Sheath outer diameter mm | Average sheath thickness mm | Maximum conductor resistance at 20°C Ω/km |
| YD/T840-1996 | HBYV | 2×1/0.4 | 1 | 0.400 | 0.85 | 2.80 | 0.55 | 142.500 |
| YD/T840-1996 | HBYV | 2×1/0.5 | 1 | 0.500 | 0.90 | 3.00 | 0.63 | 91.200 |
| YD/T840-1996 | HBYV | 2×1/0.8 | 1 | 0.800 | 1.50 | 4.80 | 0.90 | 35.800 |
| YD/T840-1996 | HBYV | 2×1/0.4 | 1 | 0.400 | 0.90 | 3.20 | 0.57 | 142.500 |
| YD/T840-1996 | HBYV | 2×1/0.5 | 1 | 0.500 | 0.90 | 3.40 | 0.65 | 91.200 |
| YD/T840-1996 | HBYV | 2×1/0.5 | 1 | 0.500 | 0.90 | 4.20 | 0.80 | 91.200 |
| YD/T840-1996 | HBYV | 2×1/0.5 | 1 | 0.500 | 0.90 | 4.60 | 0.86 | 91.200 |
National Service Number
CN