The difference between a cable and a power cord

Time:2018-12-21 Views:1317

A power cord is composed of one or more flexible conductors covered with a light, soft sheath.A cable is made up of one or more insulated conductors, which are covered with a tough outer layer of metal or rubber.Cables and wires are generally composed of core wire, insulation sheath and protective sheath.

1. Material difference: electric wire is used for carrying current of conductive metal wire.Having a solid, twisted, or foiled form.According to insulation condition, it can be divided into bare wire and insulated wire.An insulated conductor consisting of one or more insulated conducting cores placed in a sealing sheath.Its outer can add protective covering layer, the difference between wire and cable lies in the size of wire is generally small, the structure is relatively simple.But cables are sometimes classified as wires in the broad sense.

2. Difference of use: bare wire without any insulation or protective layer.In addition to being a conductor for transmitting electrical energy and information, it can also be used for manufacturing components and connecting wires of motors and electrical appliances.General use copper, aluminum, copper alloy, aluminum alloy.In addition, there are all kinds of insulated wires suitable for special requirements, such as low-voltage wires for cars, high-voltage ignition wires for cars, electrical and motor wiring, aviation wires, compensation wires and so on.Cables are used to transmit, distribute electrical energy or transmit electrical signals.Cables can be divided into power cables, communication cables and control cables according to their USES.

3. Difference in structure: cables generally have more than two layers of insulation, most of which are multi-core structures, wound around the cable disk, and the length is generally greater than 100 meters.Wire is generally a single layer insulation, single core, 100 meters a roll, wireless disk.

The characteristics of common cables are as follows:

CEF -- epdm insulated neoprene sheathed, Marine flame retardant power cable.

CVV - PVC insulated, PVC sheathed Marine flame retardant power cables.

Oxygen tank wire often USES BV, BX, RV, RVV series wire, among them: BV - copper core PVC insulated wire, long-term allowed temperature 65 ℃, the lowest temperature 15 ℃, the working voltage of ac 500 v, 1000 v dc, fixed installation in indoor and outdoor, but Ming also can apply dark apply.BX - copper core rubber insulated wire, the highest temperature 65 ℃, apply to indoor.

RV - PVC insulated single core soft line, the highest temperature 65 ℃, the lowest temperature 15 ℃, the working voltage of ac 250 v, 500 v dc, as internal wiring for instruments and equipment.

RVV - soft copper core PVC insulated and sheathed wire, allow the long-term working temperature 105 ℃, working voltage ac 500 v, 1000 v dc, used in damp, high mechanical protection requirements, often moving and bending.In fact, "wire" and "cable" are not strict boundaries.Generally, the products with few cores, small diameter and simple structure are called wires, those without insulation are called bare wires, and others are called cables.Conductor sectional area is larger (be greater than 6 square millimeter) call big electric wire, lesser (be less than or equal to 6 square millimeter) call small electric wire, insulated electric wire calls cloth electric wire again say so simpler, easy to understand!!

Common cable models: VV means: PVC insulation (the first V), PVC sheath (the second V) YJV22 means: cross-linked PVC insulation (YJ), PVC sheath (V), steel strip kay pack (22) model with "ZR" or "FR" for flame retardant cable (wire).The model of adding "L" as aluminum wire is relatively simple:

BVV-- PVC insulated and sheathed copper core,

BV-- PVC insulated copper core,

BVR-- PVC insulated copper core flexible wire,

BX-- rubber insulated copper core wire,

RHF-- neoprene rubber sheathed copper cored cord.

Common cable model:

BV-- copper core PVC insulated cable (wire)

BVR-- copper core PVC insulated flexible cable (wire)

BVV-- copper core PVC insulated PVC sheathed circular cable (wire)

BVVB- copper core PVC insulated PVC sheathed flat cable (wire)

Bv-105 -- copper core insulated wire with heat resistance of 105 degrees polyvinyl chloride

Bv-zr copper core flame retardant PVC insulated wire

Bvr-zr copper core flame retardant PVC insulated flexible wire

Bvv-zr copper core flame retardant PVC insulated PVC sheathed circular cable

Bvvb-zr copper core flame retardant PVC insulated PVC sheathed flat cable

BV - ZR - 105 copper heat 105 ℃ flame retardant PVC insulated wire

BVR - ZR - 105 copper heat 105 ℃ flame retardant vinyl chloride insulated PVC sheathed circular flexible cable

BVV - ZR - 105 copper heat 105 ℃, flame retardant PVC sheathed round cable

AV - ZR - 105 copper heat 105 ℃ flame retardant PVC insulated wire

AVR - ZR - 105 copper heat 105 ℃ flame retardant PVC insulated flexible wire installation

Av-zr copper core flame retardant PVC insulated installation wire

RVB- copper core PVC insulated flat type flexible wire connection

RVS-- copper core PVC insulated stranded flexible wiring

RVV-- copper core PVC insulated PVC sheathed flat type soft cable (wire)

Rv-105 -- copper core insulated flexible wires with 105 degrees of heat resistance and PVC insulation

SYV: solid polyethylene insulated rf coaxial cable

SYWV(Y) : physical foaming polyethylene insulated cable system cable, video (rf) coaxial cable (SYV, SYWV, SYFV) is suitable for closed circuit monitoring and cable television engineering

Special cable structure for SYWV (Y), SYKV cable TV and broadband network :(coaxial cable) single anaerobic round copper wire + physical foamed polyethylene (insulation) + (tin wire + aluminum) + PVC (polyethylene)

RVVP shielded wire: copper core PVC insulated shielded PVC sheathed flexible cable voltage 300V/300V 2-24 core purpose: instruments, instruments, intercom, monitoring, control installation

RG: physical foamed polyethylene insulated access network cable is used for transmitting data analog signals in coaxial fiber hybrid network (HFC)

KVVP: PVC sheathed braided shielded cable purpose: signal transmission, control and measurement of electrical appliances, instruments and distribution devices

RVV sheath line (227 iec 52/53) PVC insulated flexible cable purpose: household appliances, small power tools, instruments and power lighting

Flexible cable for AVVR PVC sheath installation

SBVV HYA data communication cable (indoor and external) is used for the connection of telephone communication and radio equipment as well as the wiring box of telephone distribution network

RV, RVP PVC insulated cable

RVS, RVB is suitable for household appliances, small power tools, instruments, instruments and power lighting connection cables

BV, BVR PVC insulated cable USES: applicable to electrical instrumentation equipment and power lighting fixed wiring

RIB voice box connector (fever wire)

KVV PVC insulated control cable applications: electrical appliances, instrumentation, distribution equipment signal transmission, control, measurement

SFTP twisted-pair transmission of telephone, data and information network

UL2464 computer cable

VGA display line

Transmission of radio frequency signals in SYV coaxial cables for wireless communications, broadcasting, monitoring systems engineering and related electronic equipment (including integrated coaxial cables)

SDFAVP, SDFAVVP, SYFPY coaxial cable, elevator dedicated

JVPV, JVPVP, JVVP copper core PVC insulation and sheath copper wire braided electronic computer control cable