The PSI Frequency Inverters are a specialized series of power supply units by Bosch Rexroth Indramat, which combine a welding timer with the power supply unit. These units offer versatility, being apt for various welding processes including spot, projection, repeat mode, and seam welding. The PSI6000 series presents two types of supply units: MF inverters and AC thyristor units, each differentiated by their cooling method - water or air. Specific product details can be gleaned from the product name and associated user manual.
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