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Description
Control Cable
It is suitable for PVC insulated and PVC sheathed control cables used in industrial and mining enterprises, energy and transportation departments, and used for control and protection circuits with AC rated voltages below 450/750 volts.
Introduction to control cables
This product executive standard: GB/T9330—2008
Model and name
KVV—copper core PVC insulated, PVC sheathed control cable.
KVVP3 —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 soft cable.
KVVP 2 — Copper core PVC insulated, PVC sheathed copper tape shielded control cable.
KVVP—copper core PVC insulated, PVC braided shielded control cable.
KVVR—Copper core PVC insulated, PVC sheathed control soft cable.
Use characteristics
Rated voltage: U0/U is 450/750V.
The long-term working temperature of the conductor core is 70°C and 95°C, and the cable laying temperature is not lower than 0°C.
The recommended allowable bending radius of the cable is as follows: for unarmored cables, it should not be less than 6 times the outer diameter of the cable; for armored or copper tape shielded cables, it should be no less than 12 times the outer diameter of the cable; for shielded flexible cables, no less than 6 times the outer diameter of the cable.
Control cable refers to power supply/signal control of equipment and instrument
Representative model: KVV/KYJV/There are other instrument lines, etc.
Control cable product description
Executive standard: GB 9330-2010. Flame-retardant cables should also meet the technical conditions of the IEC337-8 standard. Model Product name Voltage V Number of cores Section mm2 Main application scope KVV resistance copper core PVC insulated PVC sheathed KVV cable 450/750 4-37 0.75-10 Laminated mine control cable
Installed indoors, cable trenches, pipes and other fixed occasions
KVV22 copper core PVC insulated PVC sheathed steel tape armored kvv22 cable 450/750 4-37 0.75-10 For laying indoors, cable trenches, pipes and other fixed occasions that can withstand greater mechanical external forces
KVVP flame-retardant copper core PVC insulated PVC sheathed KVVP cable 450/750 4-37 0.75-10 For laying indoors, cable trenches, pipes and other fixed occasions requiring shielding
KVVR copper core PVC insulated PVC sheathed flexible control cable 450/750 4-37 0.75-10 For laying indoors, where movement is required
KVVRP copper core PVC insulated PVC sheathed braided shielded control soft cable 450/750 4-37 0.75-10 For laying indoors, where mobile shielding is required
ZRKVV flame-retardant copper core PVC insulated PVC sheathed zrkvv cable 450/750 4-37 0.75-10 Laying indoors, cable trenches, pipes and other fixed occasions requiring flame-retardant ZRKVV22 copper core PVC insulated PVC Sheath braided steel tape armored zrkvv22 cable 450/750 4-37 0.75-10 Laying indoors, cable trenches, pipelines and other fixed occasions that can withstand large mechanical external forces and have flame-retardant requirements
ZRKVVP copper core PVC insulated PVC sheathed braided shield zrkvvp cable 450/750 4-37 0.75-10 For laying indoors, cable trenches, pipes and other fixed occasions requiring shielding and flame retardant
ZRKVVR copper core PVC insulated PVC sheathed braided zrkvvr cable 450/750 4-37 0.75-10 For laying indoors, where mobile and flame retardant requirements are required
ZRKVVRP copper core PVC insulated PVC sheathed braided shield zrkvvrp cable 450/750 4-37 0.75-10 For laying indoors, high temperature resistant control cable (KFF cable) is suitable for AC rated occasions where mobile shielding and flame-retardant requirements are required Voltage 300/500 and below, signal detection in high temperature environment. It is especially suitable for the control and power transmission line of the protection circuit of the fire protection and security system.
Usage characteristics: working temperature: long-term use 200℃/short-term use 1000℃ 90 minutes
Wire and cable industry development overview
Summary
The wire and cable industry is the second largest industry in China after the automobile industry, with a product variety satisfaction rate and a domestic market share of over 90%. Worldwide, China's total wire and cable output value has surpassed that of the United States, becoming the world's largest wire and cable production control cable
With the rapid development of China's wire and cable industry, the number of new companies has continued to rise and the overall technical level of the industry has been greatly improved.
The development prospects of the wire and cable industry in China
The sustained and rapid growth of China's economy has provided huge market space for cable products. The strong temptation of the Chinese market has made the world focus on the Chinese market. In just a few decades of reform and opening up, China's cable manufacturing industry The huge production capacity formed has made the world look at it with admiration. With the continuous expansion of China's power industry, data communication industry, urban rail transit industry, automobile industry, shipbuilding and other industries, the demand for wire and cable will also grow rapidly, and the wire and cable industry still has huge development potential in the future.
The impact of the financial crisis on the cable industry
In November 2008, in response to the global financial crisis, my country's government decided to invest 4 trillion yuan to stimulate domestic demand, of which more than 40% was used for the construction and transformation of urban and rural power grids. The national wire and cable industry has a good market opportunity again. Wire and cable companies in various regions seize the opportunity to welcome a new round of urban and rural power grid construction and transformation.
Control cable price calculation
The price formula of the control cable is as follows: copper weight x copper price calculation: wire warp ÷ 2 = 1.25 x 1.25 x 3.14 = square number x number of wires x 0.89 x current copper price + 10% processing fee.
Cost price calculation of control cable
square X 1.83 = copper weight X copper price at the time + armor price (weight X 0.4 yuan/kg) = cost price + 10% processing fee
Cable price = manufacturing material cost + fixed expenses + tax + business expenses + profit
Manufacturing material cost = material cost * (1 + material consumption) (material cost is the theoretically calculated value)
Fixed expenses vary according to the situation of each company, generally including production wages, management wages, utilities, repairs, depreciation, rent, transportation costs
Control cable fault repair
Common faults of control cable lines include mechanical damage, insulation damage, insulation damp, insulation deterioration, overvoltage, cable overheating faults, etc. When the above-mentioned fault occurs in the line, the power supply of the faulty cable should be cut off, the fault point should be found, the fault should be checked and analyzed, and then repair and test should be carried out. The power supply can be restored after the removal of the fault.
The main electrical properties of control cables
1. DC resistance: 20℃, 0.4mm copper wire, less than or equal to 148Ω/km, 0.5mm copper wire, less than or equal to 95Ω/km.
2. Insulation electric strength: 1min 1kv no breakdown between conductors, 1min 3kv no breakdown between conductors and shielding
3. Insulation resistance: each core wire is grounded to the rest of the core, the control cable is greater than 10000MΩ.km, and the HYAT cable is greater than 3000MΩ.km.
4. Working capacitance: average 52±2nF/km
5. Far-end crosstalk defense: The average power of the specified combination at 150kHZ is greater than 69dB/km.
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Product Message
Henan crosslinking cable co., LTD. (formerly zhengzhou crosslinking cable factory) is specialized in manufacturing wire and cable, trade, production in one of the large enterprises.
Contact Us
Company Address:
Henan zhongyuan district, zhengzhou city west ring road, university of science and technology park
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