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Medium-voltage drive for low power applications

The Sinamics Perfect Harmony GH180 variable frequency drives have medium-voltage power output for critical applications and is created by linking a series of low-voltage power cells.

Siemens
01/26/2017

The Sinamics Perfect Harmony GH180 variable frequency drives have medium-voltage power output for critical applications and is created by linking a series of low-voltage power cells. Courtesy: SiemensThe Sinamics Perfect Harmony GH180 variable frequency drives have medium-voltage power output for critical applications and is created by linking a series of low-voltage power cells. This modular design also facilitates Advanced Cell Bypass, which allows the drive to maintain consistent output if one or more cells fail. In the event of a fault, the drive isolates the output of the failed cell and reconfigures the power section to bypass the cell without interrupting performance - all in less than a quarter of a second. The quality of the voltage waveform remains unchanged even when only a single cell per phase remains operational. An integral transformer with phase-shifted secondaries provides 18-pulse or better input harmonic cancellation. Synchronous transfer provides a bumpless transition when starting a series of multiple motors, pumps, or compressors and transferring them across the line. 

Siemens

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