How to distinguish between high-voltage cables and low-voltage cables
Our company produces multiple types of medium and high voltage distribution equipment, including High voltage isolation switches,Transformer Accessories,Power Cables. There are many types of wire and cable models, so how should we determine which ones are low-voltage cables and which ones are high-voltage cables? Below, NewElectricPower has organized it for everyone, hoping to be helpful.
How to distinguish between high-voltage cables and low-voltage cables
Our company produces multiple types of medium and high voltage distribution equipment, including High voltage isolation switches,Transformer Accessories,Power Cables. There are many types of wire and cable models, so how should we determine which ones are low-voltage cables and which ones are high-voltage cables? Below, NewElectricPower has organized it for everyone, hoping to be helpful.
Classification of medium and high voltage isolation switches
According to the different insulation pillar structures, it can be divided into single column disconnectors, double column disconnectors, and three column disconnectors. The single column isolation switch directly uses the vertical space below the overhead busbar as electrical insulation for the break, therefore, it has obvious advantages of saving land area, reducing the number of lead wires, and having a particularly clear opening and closing state. In the case of ultra-high voltage transmission, the use of single column isolation switches in substations has a more significant effect o
Main classification of power cables
Power cables are cables used for transmitting and distributing electrical energy. They are commonly used in urban underground power grids, power station outgoing lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seawater. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electrical energy in the main lines of the power system, including various voltage levels of 1-500KV and above, and various insulated power cables
Main classification of power cables
Power cables are cables used for transmitting and distributing electrical energy. They are commonly used in urban underground power grids, power station outgoing lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seawater. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electrical energy in the main lines of the power system, including various voltage levels of 1-500KV and above, and various insulated power cables
Main classification of power cables
Power cables are cables used for transmitting and distributing electrical energy. They are commonly used in urban underground power grids, power station outgoing lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seawater. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electrical energy in the main lines of the power system, including various voltage levels of 1-500KV and above, and various insulated power cables
How can single-phase electricity become three-phase electricity
The household uses AC single-phase, with a voltage of 220 volts. In the factory, a three-phase motor is used, with a voltage of 380 volts. How do you want to convert single-phase electricity into three-phase electricity? 1. The transformation of single-phase electricity into three-phase electricity requires an increase in voltage, which can be achieved through an inverter, which is a device that can directly change the current and convert direct current into a
How to calculate transformer load capacity
(1) Calculation of Transformer Capacity First, select the rated voltage of the transformer. The high-voltage side voltage is the same as the grid connection voltage, and the low-voltage side voltage is 10% or 5% higher than the low-voltage side (depending on the transformer voltage level and impedance voltage); Selection of rated capacity. Calculate the magnitude of the load carr
How to calculate transformer load capacity
(1) Calculation of Transformer Capacity First, select the rated voltage of the transformer. The high-voltage side voltage is the same as the grid connection voltage, and the low-voltage side voltage is 10% or 5% higher than the low-voltage side (depending on the transformer voltage level and impedance voltage); Selection of rated capacity. Calculate the magnitude of the load carr
What are the high-voltage distribution equipment
From left to right, the incoming cabinet - metering cabinet - PT cabinet - transformer cabinet (outgoing cabinet) - bus couple - transformer cabinet (outgoing cabinet) - PT cabinet - metering cabinet - incoming cabinet. The 1-way and 2-way high-voltage cabinets are symmetrically divided around the bus couple cabinet. 1) Incoming isolation cabinet: It is equipped with a high-voltage isolation switch to ensure the safety of high-voltage electrical appliances and devic
Introduction and classification of generators
Generators refer to the mechanical equipment that converts mechanical energy into electrical energy. It is driven by water turbine, steam turbine, diesel engine or other power machinery, and converts the energy generated by water flow, air flow, fuel combustion or atomic Nuclear fission into mechanical energy, which is transferred to the generator, and then converted into electrical energy by the generator. Generators have a wide range of applications in ind
Types of dry isolation transformers
Isolation transformer is suitable for isolation, small leakage current, purification of power supply, harmonic and Common-mode interference suppression occasions; Suitable for circuits with AC frequency ranging from 50Hz to 400Hz and voltage below 1000V, widely used in electrical equipment such as lighting, machine tool appliances, mechanical electronics, medical equipment, etc; It serves as an ideal power source for protection, lightning protection, and filtering.
Product classification and description of special transformers
Transformers with special purposes are commonly referred to as special transformers. In addition to AC voltage conversion, transformer has other purposes, such as changing the frequency of power supply, power supply of rectifier equipment, power supply of welding equipment, power supply of electric furnace, or Voltage transformer, current transformer, etc. Due to the different working conditions and load conditions between these transformers and general transformers, the calculation method of general transformers cannot be used for calc
A Brief Introduction to Box Transformers
As a complete set of power distribution equipment, box type transformer is an organic combination of transformer, high-voltage voltage control equipment and low-voltage voltage control equipment. The basic principle is to assemble the pressure starting system, armored cables, fully automatic substation system, DC system, and corresponding technical equipment in a specified sequence, and install all components into a specific waterproof, dustproof, and rodent proof fully sealed tempered box structure to form a specific transformer. Box t
What are the high-voltage distribution devices included
The high-voltage distribution device includes protective appliances and switching appliances. Protective appliances refer to various high-voltage fuses, while switching appliances refer to various high voltage circuit breakers, high voltage load switches, and high voltage isolation switches. 1. High voltage fuse: It is the simplest protective device used to protect electrical equipment from overload and short-circuit current damage. Its structure generally i
The main industry classification of transformer accessories
1. Power equipment manufacturing and power supply industry As an important component of power equipment, transformer accessories are widely used in various types of transformer products such as power transformers, distribution transformers, dry-type transformers, and oil-immersed transformers. Therefore, transformer accessories are often classified as an important branch of the power equipment manufacturing industry.
Product characteristics of oil immersed voltage regulators
Oil type voltage stabilizer, also known as intelligent voltage stabilizer or induction type voltage stabilizer, is a newly developed new generation of intelligent improved power voltage stabilizer equipment. The movement adopts a new optimized design, and the overall production capacity is larger. Its stability, durability, and energy-saving performance are superior to similar intelligent voltage stabilizers. Voltage stabilizing characteristics:
Product characteristics of oil immersed voltage regulators
Oil type voltage stabilizer, also known as intelligent voltage stabilizer or induction type voltage stabilizer, is a newly developed new generation of intelligent improved power voltage stabilizer equipment. The movement adopts a new optimized design, and the overall production capacity is larger. Its stability, durability, and energy-saving performance are superior to similar intelligent voltage stabilizers. Voltage stabilizing characteristics:
Principles of three major types of voltage regulators
The voltage stabilizing methods of voltage regulators can be divided into three categories: TypeI: oil immersed voltage regulators; TypeII: Carbon brush voltage regulator; TypeIII: Contactless voltage regulators. Clas
How to choose the selection method of voltage regulator
1. Determination of input voltage and load current Before selecting a voltage regulator, it is first necessary to clarify the required input voltage range and load current of the circuit. These parameters are crucial for selecting a voltage regulator, as different voltage regulators can withstand different maximum input voltages and maximum load currents. 2. Selection of regulator type After determining the input voltage and load current, the next step is to select the appropriate type of voltage regulator. Linear regulators and switching regulators are the two mos
Introduction to Common Equipment in High Voltage Distribution Room
1. Switchgear Switchgear is one of the most basic and common equipment in high-voltage distribution rooms, mainly used for controlling and distributing power supply. Common switchgear includes vacuum circuit breakers, load switches, isolating switches, grounding switches, etc. Among them, vacuum circuit breakers are one of the most important switchgear devices, responsible for quickly cutting off the power supply in case of circuit failure, ensuring the safety of th
The classification of distribution cabinets mainly includes the following types
1. Protective distribution cabinet Also known as a closed distribution cabinet, except for the installation surface, all other parts are enclosed by a sealed insulation material shell. A protective distribution cabinet can effectively protect the circuit and components; 2. Drawer type distribution cabinet In addition
The difference between electric furnace transformer and ordinary transformer
Electric furnace transformer Resistance furnace and salt bath furnace used for heating, heat treatment, powder metallurgy sintering, non-ferrous metal smelting, etc. of Machine element. Due to the small resistance of the heating element or the significant change in resistance during the heating process, a resistance furnace transformer needs to be installed between the furnace and the power grid to reduce and adjust the input voltage of the electric
Introduction to Busbar Current Transformer
Bus type current transformer is a low-voltage indoor current transformer with bus type cast insulation and plastic casing insulation, commonly known as a through core current transformer. Current transformers are widely used in low-voltage systems for measurement, energy metering, and relay protection circuits. They can be directly used as primary windings with current carrying conductors passing through window holes and the number of winding turns can be changed as needed to adapt to circuits with different rated currents. They are fle
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