Isolation transformer is a device that uses the principle of electromagnetic induction to change AC voltage. The main components are primary coil, secondary coil and iron core (magnetic core). Low voltage high current transformer is a special form of isolation transformer, which is characterized in that the primary (input) voltage is usually single-phase 220 V, 380 V or three-phase 380 V, 440 V, 660 V, 1140 V, etc, The secondary level (output) drives the load with low voltage and large current. The secondary voltage varies according to the load current and resistance. The output voltage includes 1.5V, 3V, 5V, 6V, 7V, 9V, 12V, 15V, 24V and 36V. A voltage regulator is installed on the input power side to realize smooth stepless voltage regulation. The input and output voltage and current can be carefully designed and manufactured according to the user's requirements.

Technical parameter

Number of phases: single phase

Capacity: 500VA ~ 2000kVA

Input voltage: single phase 220V / 380V (customized as required)

Output voltage: 1.5V 3V 4V 5V 7V 8V 9V 12V 15V 18V 24V 36V (customizable)

Frequency: 50 / 60Hz, within 1000Hz as required

Efficiency: ≥ 95%

Insulation grade: F grade, H grade and HC grade are optional (conventional H grade) temperature resistance 180 °

Work efficiency: 95%

Waveform distortion: no additional waveform distortion

Insulation resistance: ≥ 50m Ω

Temperature rise: 60K

Electrical strength: power frequency sinusoidal voltage 3500v for 1 minute without breakdown and flashover

Overload capacity: double the rated current for 1 minute

Executive standard: the product complies with vde0550, iec439, jb5555 and gb226

Ambient temperature: - 20 ℃ ~ + 50 ℃

Humidity: ≤ 95% RH, no condensation

Altitude: ＜ 1000M

Relative humidity: ＜ 90%

Cooling mode: dry self cooling / air cooling / water cooling

Workplace: no corrosive gas and conductive dust

Note: the installation site is free of gas vapor, chemical deposition, dust, dirt, other explosive and corrosive gases and conductive dust that seriously affect transformer insulation

Low voltage high current transformer can be used in heating, spot welding, testing and other places, such as forging plant, plating and forging annealing, boiler heating, silicon molybdenum rod heating, glass plant, metal mold hot processing, stainless steel wire drawing, smelting, salt bath furnace, traveling crane, packaging machine, film blowing machine blade heating, electroplating electrolysis, welding, spot welding machine, smelting, high current generator, current lifter, transformer Circuit breakers, contactors, thermal relays, switches, etc. are used as the power supply for short-circuit test, temperature rise test, protection characteristic test, continuous load test, electrical parameter measurement test, etc. Some products are equipped with a voltage tap tap at the primary stage, allowing only voltage adjustment after the power is cut off.