How to accurately select power cords for refrigeration equipment?

The installation of refrigeration equipment is a very strict requirements of the work, the installation will affect the work of the machine to a large extent, therefore, in the installation of the time, the contractor needs to choose the right power cord. But the choice of the power cord is actually a study, choose a large will cause economic waste, choose a small and there will be security risks, how big to be both safe and economical? This article discusses the selection of power supply wiring for refrigeration equipment.
What is wire and cable
Definition of wire and cable: wire and cable for the transmission of electric (magnetic) energy, information and electromagnetic energy conversion wire products, wire and cable in the broad sense of the term is also referred to as cable, cable in the narrow sense of the term refers to the insulated cable, which can be defined as a collection of the following parts: one or more insulated core, and their respective insulation may have a coating layer, the total protective layer and the outer layer. Cables may also have additional uninsulated conductors for the transmission of electrical (magnetic) energy, information and electromagnetic energy conversion wire products.
The basic structure of wire and cable:
1. Conductor: the conductor of current objects, wire and cable specifications are expressed in terms of the cross-section of the conductor.
2. Insulation: the outer insulation material according to its degree of voltage resistance.
Classification of wire and cable:
1. According to the voltage level:
(1) low-voltage cables: for fixed laying in AC 50Hz, rated voltage 3KV and below on the transmission and distribution lines for the transmission of electrical energy.
(2) low and medium voltage cables: generally refers to 35KV and below, such as PVC insulated cables, polyethylene insulated cables, cross-linked polyethylene insulated cables.
(3) High-voltage cables: generally 110KV and above, such as polyethylene cables and cross-linked polyethylene insulated cables.
(4) Ultra-high-voltage cables: 275-800KV cables.
(5) Extra-high-voltage cables: 1000KV and above.
2. According to the insulation material:
(1) oil-impregnated paper-insulated power cables to oil-impregnated paper for insulation of power cables. The longest history of its application, safe and reliable, long service life, low prices, the main drawback is the laying of the drop restrictions. Since the development of non-drip paper-immersed insulation, to solve the problem of fallout restrictions, so that oil-impregnated paper-insulated cables to continue to be widely used.
(2) plastic-insulated power cable insulation layer for extruded plastic power cables. Commonly used plastics are polyvinyl chloride, polyethylene, cross-linked polyethylene. Plastic cable structure is simple, easy to manufacture and process, light weight, easy to lay and install, not subject to the laying of fall restrictions, and therefore widely used for low-voltage cable, and has replaced the viscous impregnated oil paper cable trend. Its biggest drawback is the existence of dendritic breakdown phenomenon, which limits its use in higher voltage.
(3) rubber insulated power cable insulation layer for rubber plus a variety of agents, after sufficient mixing and extrusion package in the conductive core, after vulcanization and temperature. It is soft, flexible, suitable for frequent movement, laying of small bending radius occasions.
Refrigeration equipment power line calculation
In the selection of refrigeration equipment power line, in order to choose the right size, to achieve the goal of economic security, you can make a simple estimate, the specific calculation method can follow the cable safe working current mnemonic:
Ten under five (ten square meters or less multiplied by five)
Hundred on two (more than a hundred square multiplied by two)
Two and a half, three and a half, four and three boundaries (two and a half squares multiplied by four, three and a half squares multiplied by three)
Seven-zero nine-five two and a half times (seven-zero and nine-five square line are multiplied by two and a half)
Through the pipe temperature eighty-nine percent discount (if the line through the pipe or the installation of the ambient temperature is high, the current-carrying capacity will become smaller, to be in the number of safe current multiplied by zero point eight or zero point nine)
Copper wire upgrade calculation (in the same cross-section of the aluminum core line based on the rise of one level, such as two point five copper core line is in the two point five aluminum core line to rise one level, then according to four square millimeters of aluminum core line count)
Bare wire plus half (in the original has been calculated on the basis of the number of safety current and then add half)
Refrigeration equipment power line of the precise selection
1, first of all, you should choose the power cable: applicable to AC 50Hz, rated voltage 0.6/KV and the following transmission and distribution lines for the transmission and distribution of energy. Ambient temperature 25 ℃, cable conductor operating temperature does not exceed 70 ℃.
2, commonly used power cables: VV (VLV): copper (aluminum) core polyvinyl chloride, insulated polyvinyl chloride sheathed power cables.
Xinxiang Yukun Refrigeration Technology Co. is a production and sales of refrigeration two apparatus parts and sheet metal products, mainly engaged in condenser, evaporator , heat exchanger, reservoir, filter drier, Fin Evaporator (condenser), Stamping Parts, sheet metal parts, aluminum tubes for refrigeration, etc.

Our company has always had strict quality control standards in the market of refrigeration and heat exchange equipment, focusing on providing customised services to our customers. Not only do we have high requirements for the selection of raw materials, but we also keep up to date with the latest production processes and have high testing standards.

Our company mainly produces products for:Fin Evaporator.Fin Type Condenser.Capillary Tube. Coolant Reservoir.Plate Reinforcement Parts. Stamped Parts .Aluminum Tube.Instrument Testing Equipment.

Supermarket Refrigeration Show Case Copper Condenser Coil
1. OEM or ODM can be accepted
2. Fin type: Louver or corrugated
3. Be customerized according to samples and drawings.
4. High quility and low price and energy saving 60% (CE, RoHS, EMC and ISO9001 certification) The CD series products can be used in Various specificantion Condensing Units .
They are air cooled heat exchangers for refrigeration system. They are divided in 4 group:CD,CDC,CDS and CDV.All the products have been tested on 2.8MPa air leakage,and the system is disposed of pollution,applicable to R22,R134a,R404A,R407C systems.

Our company mainly produces products for:Fin Evaporator.Fin Type Condenser.Capillary Tube.Aluminum Coolant Reservoir.Plate Reinforcement Parts.Stamped Parts.Aluminum Tube.Instrument Testing Equipment.
Supermarket Refrigeration Show Case Copper Condenser Coil
1. OEM or ODM can be accepted
2. Fin type: Louver or corrugated
3. Be customerized according to samples and drawings.
4. High quility and low price and energy saving 60% (CE, RoHS, EMC and ISO9001 certification) The CD series products can be used in Various specificantion Condensing Units .