Hottest Donggang control cable copper core cable

Donggang control cable copper core cable

Donggang control cable copper core electricity the description of the longitudinal load (tension) experiment in the imported technical document is as follows: the conduit with connector can withstand the derivative of +8mm/m and hold the cable for another 10min ② the ambient temperature when the cable is laid is not less than 0 ℃; ③ The temperature of conductor short circuit shall not exceed 250 ℃, and the longest duration shall not exceed 5S; ④ The minimum bending radius of cable laying: the non armored cable shall not be less than 6 times the outer diameter of the cable, the armored cable and shielded cable shall not be less than 12 times the outer diameter of the cable, and the flexible cable with shielding layer shall not be less than 6 times the outer diameter of the cable. KVV copper core PVC insulated PVC sheathed control cable is used for control and monitoring circuits and protection circuits with AC rated voltage of 450v/750v and below. The products comply with GB national standards. Among them, shielded control cables are widely used in power plants and power stations because of their good evaluation performance. Cables are laid in cities, cable trenches, pipelines, direct burial, shafts and other fixed places that can withstand large mechanical Larry. Service characteristics: the long-term allowable working temperature of the conductor is 70 ℃. Ambient temperature during laying ≥ 0 ℃. Minimum bending radius: cable without armor layer. KVV - copper core PVC insulated and PVC sheathed control cable

kvvp - copper core PVC insulated, PVC sheathed aluminum foil shielded control cable

kvv 22 - copper core PVC insulated, PVC sheathed steel tape armored control cable

kvvrp - copper core PVC insulated, PVC sheathed braided shielded control flexible cable

kvvp 2 - copper core PVC insulated, PVC sheathed copper tape shielded control cable

kvvp - copper core PVC insulated, PVC textile shielded control cable

kvvr - copper core PVC insulated and PVC sheathed control flexible cable

in recent years, shielded and flame-retardant control cables have been developed, which are deeply welcomed by the majority of users. Control cables include KVV cable, KVVR cable, zrkvv cable, zrkvvp cable, kvvp cable, kvvrp cable, kvvp2 cable, kvvp2-22 cable, nhkvv cable, Zrkvvrp cable, KVV22 cable, zrkvv22 cable. Executive standard: GB. Flame retardant cables shall also meet the technical conditions of IEC standards

usage features:

kvv copper conductor PVC insulated PVC sheathed KVV cable 450/750 0 Laid indoors, in cable trenches, pipelines and other fixed occasions

KVV22 copper core PVC insulated PVC sheathed steel tape armored KVV22 cable 450/750 0 Laying indoors, cable trench, pipeline directly buried and other fixed occasions that can withstand large external mechanical forces

kvvp flame retardant copper core PVC insulated PVC sheathed kvvp cable 450/750 0 Laying indoors, cable trenches, pipelines and other fixed occasions requiring shielding

kvvr copper core PVC insulated PVC sheathed control flexible cable 450/750 0 Laid indoors, where there are mobile requirements

kvvrp copper core PVC insulated PVC sheathed braided shielded control flexible cable 450/750 0 Laid indoors, where there are mobile shielding requirements

zrkvv flame retardant copper core PVC insulated PVC sheathed zrkvv cable 450/750 0 Laying indoors, cable trenches, pipelines and other fixed occasions requiring flame retardance

zrkvv22 copper core PVC insulation PVC sheath braided steel tape armor

zrkvv22 cable 450/750 0 Laying indoors, cable trench, pipe straight, and then surface cleaning treatment for the experimental machine, burying and other fixed occasions that can withstand large external mechanical forces and have flame retardant requirements

zrkvvp copper core PVC insulation PVC sheath woven shielding

zrkvvp cable 450/750 0 Laying indoors, cable trenches, pipelines and other fixed occasions requiring shielding and flame retardance

zrkvvr copper core PVC insulated PVC sheathed braided zrkvvr cable 450/750 0 Laid indoors, where there are mobile and flame retardant requirements

Zrkvvrp copper core PVC insulated PVC sheathed braided shielded Zrkvvrp cable 450/750 0 Laid indoors, where there are mobile shielding and flame retardant requirements,

high temperature resistant control cable (KGg cable) is suitable for signal detection in high temperature environment with AC rated voltage of 300/500 and below. It is especially suitable for the control of the protection circuit of fire protection and security system and the transmission line of power

service characteristics: working temperature: 200 ℃ for long-term use. Short term use 1000 ℃ for 90 minutes Product Name: KVV PVC insulated and sheathed control cable

Donggang control cable copper core cable copper tape wrapped shielding, copper wire wrapped shielding, copper wire copper tape combined shielding, copper tape longitudinal shielding (divided into rolling and non rolling), aluminum tape longitudinal shielding (divided into rolling and non rolling), steel wire copper wire combined shielding. The shielding effect of longitudinal wrapping structure is better than that of wrapping structure. In addition, aluminum/plastic composite tape is also used for wrapping or longitudinal wrapping as the shielding layer. Whether this shielding layer is applied to the structure of power cable for frequency conversion system meets the requirements of anti electromagnetic interference is questionable. The choice of shielding method depends on the use of the cable. The cross section of the shielding layer is generally determined according to the use requirements. Generally, the cross section of the shielding layer is 50% of the phase line cross section, and it is also required to be equal to the phase line cross section. 4.4 cable insulation ordinary power cables are insulated with PVC, XLPE, ERP, CSM, cr/pcp, NBR and other materials, which are considered from the aspects of insulation performance (volume resistance, dielectric constant, dielectric loss, dielectric strength, working temperature, etc.) and bending performance

product features:

1. Purpose: This product is used for wiring electrical appliances and instruments in power distribution devices with AC rated voltage of 450v/750v or DC voltage of 1000V and below

2. Product use characteristics: the long-term allowable working temperature of cable conductor should not exceed 70 ℃. The temperature of the cable during laying shall not be lower than 0 ℃, and the bending radius during laying shall not be less than 10 times of the outer diameter of the cable. The cable with armor layer or copper tape shielding structure shall not be less than 12 times of the outer diameter of the cable

3. Product standard: gb9330 PVC insulated and sheathed control cables

Donggang control cable copper core cable interferes with the power supply system, load and other adjacent electrical equipment, especially the i/o signal of the control system. At the same time, due to the existence of high-order harmonics, the frequency conversion cable should have a higher insulation safety margin. In the actual use process, we often encounter the interference problem of high-order harmonics of the frequency converter. Here is a brief introduction to the mechanism and propagation path of harmonics. The main circuit of the frequency converter is generally composed of ac-dc-ac. the external input 380v/50hz power frequency power supply is uncontrollably rectified into DC voltage through the three-phase bridge, filtered by the filter capacitor and inverted into AC voltage with variable frequency by the high-power thyristor switching element. In the rectifier circuit, due to the existence of irregular rectangular waves, the waveform is decomposed into fundamental waves and harmonics according to Fourier series, and the higher harmonics will interfere with the input power supply system. In the inverter circuit, the output current waveform is the pulse waveform modulated by the wave signal of the rib clamp at room temperature PWM load 4.2.3, which continues to be a material supplier of international famous brands and a world-class material solution provider. For GTR high-power inverter components, the PWM carrier frequency is 2 ~ 3kHz