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Новости компании | синфазные дроссели | Новости отрасли | трансформатор|RJ45 connectors
1. Коэффициент напряжения
Установите количество двух групп low-frequency трансформатор катушки как N1 и N2, N1 - первичная обмотка, N2 - вторичная обмотка.
На первичную обмотку подается переменное напряжение, а на обоих концах вторичной обмотки создается индуцированная электродвижущая сила.
When N2>N1, its induced electromotive force is higher than the primary voltage added, this low-frequency трансформатор is called boost low-frequency трансформатор.
Эффективность 2.
At rated power, the ratio of the output power to the input power of the low-frequency трансформатор is called the efficiency of the low-frequency трансформатор, that is, η=P2/P1×100%.
Where η is the efficiency of the low-frequency трансформатор, P1 is the input power and P2 is the output power.
When the output power P2 of the low-frequency трансформатор is equal to the input power P1, the efficiency η is equal to 100%, at this time the low-frequency трансформатор will not produce any loss, but in fact this low-frequency трансформатор does not exist, low-frequency трансформатор transmission power always produce loss, this loss mainly copper loss and iron loss.
The efficiency of the low-frequency трансформатор is closely related to the power level of the low-frequency трансформатор. Usually, the greater the power, the smaller the loss and the higher the efficiency.
Наоборот, чем ниже мощность, тем ниже КПД.
3. Рабочая частота
Because the low frequency трансформатор core loss and frequency is very important, it should be designed and used according to the frequency of use, this frequency is called the working frequency.
4. Номинальное напряжение
This parameter refers to the voltage allowed to be applied on the primary winding of the low-frequency трансформатор. The voltage applied on the primary winding of the low-frequency трансформатор shall not be greater than the specified value in normal operation.
5. Номинальная мощность
Rated power refers to the low frequency трансформатор in the specified frequency and voltage, can work for a long time, and does not exceed the specified temperature rise of the secondary output power.
The unit of rated power of low-frequency трансформатор is VA(volt ampere), instead of W(watt). This is because there will be part of reactive power in the rated power, so it is more accurate to express VA.
6. Ток без нагрузки
When the low-frequency трансформатор secondary winding open, there is still a certain current in the primary coil, this current is called no-load current.
Ток холостого хода состоит из тока намагничивания (генерирующего магнитный поток) и тока потерь в железе (вызванного потерями в сердечнике).
Для low-frequency трансформатор with 50Hz power supply, ток холостого хода в основном равен току намагничивания.
7. Отсутствие потери нагрузки
When the low-frequency трансформатор is open in the secondary, the power loss measured in the primary is the no-load loss.
8. Сопротивление изоляции
This parameter represents the insulation performance between each coil of the low-frequency трансформатор and between each coil and the iron core.
Сопротивление изоляции связано с характеристиками, температурой и влажностью используемого изоляционного материала.
Insulation resistance is a parameter that represents the insulation performance of low-frequency трансформатор. It is the ratio of voltage and leakage current applied on the insulation layer, including the insulation resistance value between windings, windings and core and shell.
Поскольку сопротивление изоляции очень велико, обычно для измерения сопротивления можно использовать только мегомметр (или блок мультиметра R × 10 кОм).
If the insulation resistance of the low-frequency трансформатор is too low, the case may be charged in use and even the low-frequency трансформатор winding may be broken down and burned.
9. Повышение температуры
When the low-frequency трансформатор is put into operation, the part where the coil temperature is higher than the ambient temperature is called the coil temperature rise.
Часть ядра, где рабочая температура превышает температуру окружающей среды, называется повышением температуры ядра.
Существует два вида повышения температуры: самое сильное повышение температуры и среднее повышение температуры.
Generally, the average temperature rise of the coil is taken as the temperature rise index of the low-frequency трансформатор.
Temperature rise is an important factor affecting the life of low-frequency трансформатор.
The allowable temperature rise of a low-frequency трансформатор is determined by its insulation and heat resistance class.
1. Коэффициент напряжения
Установите количество двух групп low-frequency трансформатор катушки как N1 и N2, N1 - первичная обмотка, N2 - вторичная обмотка.
На первичную обмотку подается переменное напряжение, а на обоих концах вторичной обмотки создается индуцированная электродвижущая сила.
When N2>N1, its induced electromotive force is higher than the primary voltage added, this low-frequency трансформатор is called boost low-frequency трансформатор.
Эффективность 2.
At rated power, the ratio of the output power to the input power of the low-frequency трансформатор is called the efficiency of the low-frequency трансформатор, that is, η=P2/P1×100%.
Where η is the efficiency of the low-frequency трансформатор, P1 is the input power and P2 is the output power.
When the output power P2 of the low-frequency трансформатор is equal to the input power P1, the efficiency η is equal to 100%, at this time the low-frequency трансформатор will not produce any loss, but in fact this low-frequency трансформатор does not exist, low-frequency трансформатор transmission power always produce loss, this loss mainly copper loss and iron loss.
The efficiency of the low-frequency трансформатор is closely related to the power level of the low-frequency трансформатор. Usually, the greater the power, the smaller the loss and the higher the efficiency.
Наоборот, чем ниже мощность, тем ниже КПД.
3. Рабочая частота
Because the low frequency трансформатор core loss and frequency is very important, it should be designed and used according to the frequency of use, this frequency is called the working frequency.
4. Номинальное напряжение
This parameter refers to the voltage allowed to be applied on the primary winding of the low-frequency трансформатор. The voltage applied on the primary winding of the low-frequency трансформатор shall not be greater than the specified value in normal operation.
5. Номинальная мощность
Rated power refers to the low frequency трансформатор in the specified frequency and voltage, can work for a long time, and does not exceed the specified temperature rise of the secondary output power.
The unit of rated power of low-frequency трансформатор is VA(volt ampere), instead of W(watt). This is because there will be part of reactive power in the rated power, so it is more accurate to express VA.
6. Ток без нагрузки
When the low-frequency трансформатор secondary winding open, there is still a certain current in the primary coil, this current is called no-load current.
Ток холостого хода состоит из тока намагничивания (генерирующего магнитный поток) и тока потерь в железе (вызванного потерями в сердечнике).
Для low-frequency трансформатор with 50Hz power supply, ток холостого хода в основном равен току намагничивания.
7. Отсутствие потери нагрузки
When the low-frequency трансформатор is open in the secondary, the power loss measured in the primary is the no-load loss.
8. Сопротивление изоляции
This parameter represents the insulation performance between each coil of the low-frequency трансформатор and between each coil and the iron core.
Сопротивление изоляции связано с характеристиками, температурой и влажностью используемого изоляционного материала.
Insulation resistance is a parameter that represents the insulation performance of low-frequency трансформатор. It is the ratio of voltage and leakage current applied on the insulation layer, including the insulation resistance value between windings, windings and core and shell.
Поскольку сопротивление изоляции очень велико, обычно для измерения сопротивления можно использовать только мегомметр (или блок мультиметра R × 10 кОм).
If the insulation resistance of the low-frequency трансформатор is too low, the case may be charged in use and even the low-frequency трансформатор winding may be broken down and burned.
9. Повышение температуры
When the low-frequency трансформатор is put into operation, the part where the coil temperature is higher than the ambient temperature is called the coil temperature rise.
Часть ядра, где рабочая температура превышает температуру окружающей среды, называется повышением температуры ядра.
Существует два вида повышения температуры: самое сильное повышение температуры и среднее повышение температуры.
Generally, the average temperature rise of the coil is taken as the temperature rise index of the low-frequency трансформатор.
Temperature rise is an important factor affecting the life of low-frequency трансформатор.
The allowable temperature rise of a low-frequency трансформатор is determined by its insulation and heat resistance class.
