415V to 380V to 220V200V5KW30/50KVA three-phase isolation dry-type transformer

The main technical parameters

Note

There is no gas vapor, chemical deposits, dust, dirt and other explosive and corrosive media that seriously affect the insulation of the transformer at the installation site.

Overview

SG series three-phase dry-type transformers are widely used in various three-phase power supply occasions with AC 50-60Hz and input and output voltages not exceeding 500V. It has the advantages of fire prevention, moisture resistance, safety and reliability, energy saving and convenient maintenance. It is especially suitable for imported equipment (380V in→220V out, 380V in→any voltage output) specifications 300VA to 1000KVA. The various input and output voltage levels of the product, the connection group, the number and position of the adjustment taps (typically 5%), the distribution of winding capacity, the secondary single-phase winding equipment, the use of rectifier circuits, and the isolation transformer are safe The power supply is generally used for machine repair and maintenance, and plays a role of protection, lightning protection, and filtering. The isolation transformer is a 1/1 transformer. The primary is single-phase 220V, and the secondary is also single-phase 220V. Or the primary three-phase 380V, the secondary is also three-phase 380V. First of all, we usually use one line of AC power voltage to connect to the earth, and there is a 220V potential difference between the other line and the earth. Human contact can cause electric shock. However, the secondary of the isolation transformer is not connected to the ground, and there is no potential difference between any two wires of it and the ground. People will not get an electric shock if they touch any line, so it is safer. Secondly, the output end of the isolation transformer is completely "open circuit" isolated from the input end, so that the input end of the transformer (the power supply voltage supplied by the grid) can effectively play a good filtering role. So as to provide a pure power supply voltage to the electrical equipment. Another use is to prevent interference. It can be widely used in places such as subways, high-rise buildings, airports, stations, wharfs, industrial and mining enterprises and tunnels for power transmission and distribution. Isolation transformer refers to a transformer in which the input winding and the output winding are electrically isolated from each other, in order to avoid accidentally touching the live body (or metal parts that may be charged due to insulation damage) and the ground at the same time. Its principle is the same as that of ordinary The dry-type transformer is the same, but also uses the principle of electromagnetic induction to isolate the primary power circuit, and the secondary circuit floats to the ground to ensure the safety of electricity.