The ATV1200C 700/200 power unit is a key component in Schneider Electric's ATV1200C series high-voltage frequency converter. Here is a detailed introduction:
Basic Structure and PrincipleThe power unit of the ATV1200C series is a single-phase, two-level output switching device that obtains high voltage output by connecting multiple low-voltage power units in series. Each unit is a frequency converter with three-phase input and single-phase output, and its advantage lies in the fact that the switching unit is a low-voltage component, which works reliably. The input of multiple units is powered by phase-shifting transformers to form multi pulse rectification, which can eliminate the harmonic impact on the power grid; The output is achieved through phase control of the series unit to achieve multi-level output, fitting sine waves with as many levels as possible and eliminating the influence of PWM waveforms on the motor.
Electrical performanceAccording to the information on the Alibaba platform, the rated voltage of the ATV1200 700/200 power unit is 220V, the adapted motor power is 10kW, and the rated current is 220V. However, this information may have some errors because the voltage levels of the ATV1200C series frequency converter are usually 3kV, 3.3kV, 6kV, 6.6kV, 10kV, 11kV, etc.
Technical Features
high reliabilityThe standard power unit adopts the new generation IGBT module packaging technology, with a built-in temperature measurement module. Equipment with 80A and below integrates a "rectifier bridge+inverter bridge" integrated structure, and uses long-life metal film capacitors to reduce the risk of capacitor failure and ensure circuit safety. The capacitor life can be extended to about 15 years. At the same time, the sealed casting voltage detection device and ceramic/epoxy encapsulated bypass contactor have higher insulation strength and stronger environmental adaptability.
Efficient heat dissipationThanks to the efficient air duct design, its convective heat transfer efficiency has been increased by an average of 30%, and the noise level has also been significantly reduced.
Convenient maintenanceThe power unit adopts ergonomic design, with a smaller volume, making it easy for personnel to operate and maintain. All power units of the same frequency converter are consistent and installed on the slide rail, making replacement convenient and fast.
FeaturesConfigurable power unit bypass, system bypass, high and low voltage ride through functions, as well as dual machine hot standby solutions, make the equipment more available and effectively reduce unplanned downtime losses. The standard frequency conversion dedicated multi voltage graded protection uninterruptible power supply can provide up to 30 minutes of control power support capability.