Product Description:

The HVE04.2-W075N/S202 is a power supply unit in the HVE Power Supply Units series manufactured by Bosch Rexroth Indramat. Installed inside an automation cabinet, it rectifies three-phase line voltage into a stabilized DC link and also provides a separate low-power supply for control electronics. This arrangement supports connected drive controllers during startup, acceleration, and position holding without unstable bus voltage. It is intended for multi-axis motion platforms that rely on rapid energy exchange during coordinated industrial processes.

The unit is rated for 75 kW of continuous output and can sustain a DC-bus throughput of 35 kW while accepting peak demands of 105 kW for 0.3 s. Internal capacitors charge to operating level in 1.6 s, and a dedicated auxiliary channel provides 300 W for I/O cards, operator panels, and safety relays. The internal capacitance is 3.75 mF, and an external capacitor bank of up to 10 mF can be connected when more stored energy is needed. Cooling is handled by an internal air circuit with a built-in air blower, so the unit can operate in ambient temperatures up to 45 °C and relative humidity up to 95%. The power supply is Version 2, has an IP10 rating, weighs 28 kg, and measures 498 mm high by 250 mm wide for installation in standard 600 mm deep enclosures.

During braking events, the built-in bleeder dissipates 2.5 kW continuously and tolerates surges up to 270 kW, which helps prevent overvoltage on the DC link. Regenerative loads that momentarily feed energy back into the supply are absorbed up to 250 kWs, helping protect both the power section and adjacent drives. This is useful in applications with frequent deceleration, where returned energy can rise quickly for short intervals. When that limit is exceeded, external dumping or line regeneration equipment is required to control bus voltage and reduce the chance of nuisance shutdowns during heavy braking cycles.