Two, common wire and cable model meaning:
R-connection with flexible cable (wire), soft structure.
V-insulated polyvinyl chloride. V-insulated polyvinyl chloride V-polyvinyl chloride sheath
B-flat (flat).
S-Twisted pair type. a-tin or silver plated.
F-High temperature resistant
P-Braided shielding P2-Copper tape shielding P22-Steel tape armoring
Y-Prefabricated type, generally omitted, or polyolefin sheath
FD-Product category code, refers to branch cable. The standard of the Ministry of Construction to be issued with FZ, its substance is the same
YJ-cross-linked polyethylene insulation
V-polyvinyl chloride insulation or sheath
ZR-flame retardant type
NH-fire-resistant type
WDZ- Halogen-free and low-smoke flame-retardant type
WDN- Halogen-free and low-smoke fire-resistant type
For example: SYV 75-5-1 (A, B, C)
S: Radio frequency Y:Polyethylene insulation V:Polyvinyl chloride sheath A:64 braid B:96 braid C:128 braid
S: RF Y:Polyethylene insulation V:Polyvinyl chloride sheath p>
75: 75 ohm 5: cable diameter is 5MM 1: represents single core
SYWV 75-5-1
S: RF Y: polyethylene insulation W: physical foam V: PVC sheath
75: 75 ohm 5: cable outer diameter is 5MM 1: represents single core
Example: RVVP2*32/0.2 RVV2*1.0 BVR
R: Flexible wire VV: Double sheathed wire P shielded
2: 2-core multi-stranded wire 32: 32 copper wires per core 0.2: 0.2MM diameter of each copper wire
ZR-RVS2*24/0.12
ZR: Flame-retardant R: Flexible wire S: Twisted-pair
2: 2-core multi-stranded wire 24: 24 wire per core
2: 2-core multi-stranded wire 24: 24 wire per core
This is the first time that we have used this type of wire. Stranded wire 24: 24 copper wires per core 0.12: 0.12mm diameter of each copper wire
Model and name
RV Copper-core vinyl chloride insulated connecting cable (wire)
AVR Tin-plated copper-core polyethylene insulated flat connecting flexible cable (wire)
RVB Copper-core PVC flat connecting cable
RVS Copper-core PVC stranded connecting cable
RVS Copper-core PVC stranded connecting cable
ZR: Flame retardant RVV Copper core PVC stranded connecting wire
RVV Copper core PVC insulated PVC sheathed round connecting flexible cable
ARVV Tinned copper core PVC insulated PVC sheathed flat connecting flexible cable
RVVB Copper core PVC insulated PVC sheathed flat connecting flexible cable
RV- 105 Copper core heat-resistant 105oC PVC insulated PVC insulated connecting flexible cable
AF-205AFS-250AFP-250 Silver-plated polychloroethylene fluorine plastic insulated heat-resistant -60oC~250oC connecting Flexible wire
Three, the meaning of the specification representation
Specifications using the number of cores, nominal cross-section and voltage rating
①Single-core branch cable specification representation: the same circuit of the number of cables * (1 * nominal cross-section), 0.6/1KV,
such as: 4 * (1 * 185) +1 * 95 0.6/1KV
② Multi-core stranded branch cable specifications: the number of cables in the same circuit * nominal cross-section, 0.6/1KV,
such as: 4 * * 185 +1 * 95 0.6/1KV
③ Multi-core with the same sheath branch cable specifications: the number of cores of the cable × nominal cross-section - T, such as: 4 × 25-T
Four, the complete model specifications
Because the branch cable contains the trunk cable and branch cable. And the two specifications of the structure is different, so there are two methods of expression:
①The trunk cable and branch cables are expressed separately,
such as: trunk cable: FD-YJV-4*(1*185)+1*95 0.6/1KV
Branch cable: FD-YJV-4*(1*25)+1*16 0.6/1KV
This method is particularly important when designing. p> This method is particularly concise in the design, can easily indicate the different specifications of the branch line
② the trunk cable and branch cable together, such as: FD-YJV-4 * (1 * 185/25) +1 * 95/16 0.6/1KV
This method is more intuitive, but is limited to the branch cable for the same specification, can not indicate the branch line of the Different specifications:
Since the branch cable is mainly due to the 1KV low-voltage distribution system, its rated voltage of 0.6/1KV can be omitted in the design labeling.