News

What are the specifications and model of the transformer? Specifications and model is how to develop it?

Firstly, classification

Arrangement by cooling: dry transformers (self-cooling), oil immersion machines (electrically cooled), fluoride transformers (evaporators).

According to moisture-proof classification: open transformer, potentiometer, closed transformer.

According to core or coil structure classification: core transformer (insert core, C core, ferrite core), shell transformer (insert core, C core, ferrite core), ring transformer, needle transformer foil type.

According to the number of power supply types: single-phase transformers, three-phase transformers, multi-phase transformers.

Using classification: transformers, transformers, sound transformers, IF transformers, high frequency inverters, pulse transformers.

Second, the power varies characteristics of parameters

1, working frequency

Transformer takes the core and frequency of a great relationship, it must be based on the use of frequency to design and use, this frequency, indicates the operating frequency.

2, rated capacity

At the specified frequency and voltage, the transformer can operate for hours, and does not exceed the increased temperature of the output power.

3, rated voltage

Referring to the voltage applied to the transformer winding, the job should not be greater than the specified value.

4, voltage ratio

Refers to primary voltage and secondary voltage ratio, which has a no-load voltage ratio and a differential load voltage ratio. 5, no-load current

Primary open circuit transformer, the primary still has a current, this part of the current is called no load current. No-load current includes magnetized flow (generated current) and lost current (due to core losses). For a 50 Hz power transformer, no load current is equivalent to that of the electromagnetic current.

6, do not take load

Refers to open secondary transformer circuits, measured in the main outage. The main loss is the core loss, followed by the no-load current in the resistance against the main winding of the loss (copper loss), this is part of the loss is very small.

7, effective

Refers to the percentage of the secondary power ratio P2 to primary electricity P1. Usually the larger the rated capacity of the transformer, the higher the efficiency.

8, insulation resistance

Indicate the separation between the transformer windings and between the windings and the core. The degree of insulation resistance relates to the performance of the insulating material used, the degree of temperature and humidity.