Thread Content
For example: SYV 75-5-1(A, B, C) – S: Radio frequency; Y: Polyethylene insulation; V: Polyvinyl chloride sheath. A: 64 strands; B: 96 strands; C: 128 strands. 75: 75 ohms; 5: Cable diameter is 5 MM; 1: Single core. SYWV 75-5-1 – S: Radio frequency; Y: Polyethylene insulation; W: Physically foamed material; V: Polyvinyl chloride sheath. 75: 75 ohms; 5: Outer diameter of the cable is 5 MM; 1: Single core. For example: RVVP2*32/0.2, RVV2*1.0, BVR – R: Flexible wire; VV: Double-shelled wire with shielding; 2: 2-core stranded wire; 32: 32 copper wires per core; 0.2: Diameter of each copper wire is 0.2 MM. ZR-RVS2*24/0.12 – ZR: Flame-retardant; R: Flexible wire; S: Twisted pair; 2: 2-core stranded wire; 24: 24 copper wires per core; 0.12: Diameter of each copper wire is 0.12 MM. Models and names: RV – Copper core with vinyl chloride insulation, flexible connection cable (wire); AVR – Tinned copper core with polyethylene insulation, flat flexible connection cable (wire); RVB – Copper core with polyvinyl chloride insulation, flat connection wire; RVS – Copper core with polyvinyl chloride insulation, twisted connection wire; RVV – Copper core with polyethylene insulation and polyvinyl chloride sheath, round flexible connection cable; ARVV – Tinned copper core with polyethylene insulation and polyvinyl chloride sheath, flat flexible connection cable; RVVB – Copper core with polyethylene insulation and polyvinyl chloride sheath, flat flexible connection cable; RV-105 – Copper core with heat resistance up to 105°C, polyvinyl chloride insulation and sheath, flexible connection cable. AF-205, AFS-250, AFP-250 – Silver-plated polyvinyl chloro-fluoroplastic insulation, high-temperature resistant from -60°C to 250°C, flexible connection wires. 2. Meaning of the specification notation: The specifications are indicated by the number of cores, nominal cross-sectional area, and voltage rating. ① Specification notation for single-core branch cables: Number of cables in the same circuit * (1 * nominal cross-sectional area), 0.6/1 KV. Example: 4*(1*185)+1*95 0.6/1 KV. ② Specification notation for multi-core twisted branch cables: Number of cables in the same circuit * nominal cross-sectional area, 0.6/1 KV. Example: 4**185+1*95 0.6/1 KV. ③ Specification notation for multi-core cables with the same sheath: Number of cable cores × nominal cross-sectional area – T. Example: 4×25-T. Meaning of the model: R – Flexible cable (wire) for connections, with a flexible structure. V – Insulated polyvinyl chloride. V – Polyvinyl chloride insulation V – Polyvinyl chloride sheath B – Flat (flat-shaped). S-twisted pair type. A – Tin-plated or silver-plated. F – High-temperature resistant; P – Woven shielding; P2 – Copper tape shielding; P22 – Steel tape armoring; Y – Pre-fabricated type, often omitted, or polyolefin sheath; FD – Product category code, referring to branch cables. The standards to be issued by the Ministry of Construction are denoted by FZ; those with similar functionality are labeled as follows: YJ – cross-linked polyethylene insulation; V – polyvinyl chloride insulation or sheathing; ZR – flame-retardant type; NH – fire-resistant type; WDZ – halogen-free, low-smoke flame-retardant type; WDN – halogen-free, low-smoke, fire-resistant type