Tips: Difference between isolation transformer and autotransformer
- The main function of isolation transformer is to isolate the electrical equipment and Grid, it has no direct electrical connection with electric equipment and power supply and is used for safety situations or occasions with high anti-interference requirement, etc.
- Isolated type structure uses more materials and the cost is high, in addition to changing the voltage, it can also electrically isolate the input winding and output winding, input/output and zero line is also isolated to avoid the danger of touching the charged body at the same time. Besides, with the function of filter performance and high security, isolation transformer can also restrain various interferences.
- Autotransformer is a self-coupling transformer, its structure is relatively simple and the cost is low, input/output and zero line are shared to use. The secondary side of the transformer is a part of the primary side, the primary and secondary side share a same winding, the two coils make use of the electric current difference to cut the magnetic line and realize voltage transformation. It is generally used to boost voltage of the direct current, the output and input of the transformer has direct electrical connection and safety performance is poor.
- Autotransformer is similar to three-terminal adjustable resistance. Because the voltage of direct current cannot be directly boosted and it needs to go through the electronic components, autotransformer is generally used to adjust the voltage of the equipment.
- Isolation transformer is the device which transform alternating current (AC) electrical power from primary to secondary side, makes it ideal for use in the electrical and the engineering industries. The AC power supply voltage we usually use is connected to the ground with one wire, and there is a potential difference of 220V between the other wire and the ground. If human contact it, it can cause electric shock. The secondary winding of the isolation transformer is not connected to the ground, and there is no potential difference between any two lines of it and the ground. People will not get electric shock when they touch any line, so it is safer.
The first step is transformer design
Transformer type: according to actual inquiry
Input and output: customer customized
Insulation level: H level
Parameter:according to actual inquiry
The second step of cabinet design
Technical Description:
- Scope of application: 1kVA～520kVA transformer
- Cabinet size:According to your inquiry
- Incoming and outgoing wire methods: bottom incoming and outgoing wires or top incoming and outgoing wires
- Standard configuration: circuit breaker, indicator light
- Optional: filters, surge protectors, etc.
- Surface coating: RAL7035, orange pattern
- Cooling method: Natural air cooling or Dry type air cooling
- IP rating: IP20 (upgradeable)
- Allowable load-bearing: ≤1500Kg
- Base color: RAL9011, orange pattern
The third step test content
- Ground resistance
- Insulation withstand voltage
- Earth leakage current test
- No load test
- Dimensions
- Visual inspection
