PSI6300.334-L2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6300.334-L2 is a medium frequency inverter from the PSI Frequency Inverters series. It operates with a control supply of 24 V DC and supports a mains voltage range of 480 to 690 VAC. The inverter features a maximum output current of 800 A, an IP20 degree of protection, and uses air cooling.
Internal Product Review
The PSI6300.334-L2 is a medium frequency inverter with a 480 - 690 VAC mains range, well suited for high-demand industrial power conversion. Air-cooled construction and IP20 protection support clean cabinet integration and dependable thermal management. Strong electrical capacity is the standout here, especially the 800 A maximum output current.
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Product Description:
The PSI6300.334-L2 medium-frequency inverter is manufactured by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. It conditions three-phase mains power and delivers a regulated, higher-frequency output that automation systems use for controlled heating, specialized drive tasks, or other processes that cannot be served directly by standard line frequency. By providing adjustable energy in a compact cabinet, the unit fits into control rooms where only limited ventilation space is available.
The inverter accepts a mains window of 480 - 690 VAC, allowing it to connect to common industrial distribution networks without a step-up transformer. Internally, switching devices operate at a 1 kHz clock frequency; this determines the resolution at which the output waveform can be modulated and influences harmonic content delivered to the load. A separate 24 V DC control supply powers logic and INTERBUS-S communication so fieldbus traffic is maintained even when the power stage is isolated. For continuous operation the power stage carries a nominal system current of 110 A; during rapid load transients it can supply up to 800 A so that process stability is not lost while protective thresholds remain intact. MOV-based overvoltage protection clamps supply surges that could otherwise exceed semiconductor ratings.
The output passes through a step-down transformer that can momentarily withstand a secondary current of 36 kA, matching the instantaneous demands of induction coils without saturating magnetic components. Cabinet heat produced by control electronics totals 100 W, while the power devices dissipate up to 360 W; both figures are removed by the air-cooled design and require a minimum 100 mm vent clearance. An IP20 degree of protection limits installation to clean, non-conductive environments, and safe operation is maintained up to 55 °C ambient with cooling air not exceeding 45 °C. Field timing and diagnostics are synchronized through the built-in INTERBUS timer, keeping peripheral modules aligned with every inverter cycle.
