Product Description:

The HVR03.2-W045N/S202 is a regulated power supply module engineered by Bosch Rexroth Indramat for the HVR Power Supply Units series and is intended for drive systems that share a common DC link. By converting three-phase AC input to a stable DC level, the unit feeds multiple servo or spindle inverters inside an automated cell, helping axes remain synchronized while protective circuits stay active during rapid load shifts. Its compact footprint lets it mount alongside drives in the cabinet without external transformers, which helps keep the power section concentrated in one enclosure area. In cabinets with several axes, this centralized supply helps reduce the need for separate input stages on each inverter and supports orderly power distribution across the shared bus.

The module accepts 3 x AC 380–480 V ±10% directly from the plant mains, so it can operate across common industrial supply ranges without tap changers. Thermal management relies on internal air cooling with a built-in blower, so heat is expelled by an integral fan rather than by separate cabinet air movers. From that input, the device can deliver up to 45 kW of continuous electrical power onto the common DC rail, which suits medium-size machine groups. The downstream drives receive a regulated DC bus voltage, so fluctuations in line supply or regenerative energy are reduced before they reach the inverters. Hardware build version 2 identifies the component revision.

During operation, the unit is built in Series 03 and uses capacitors and chokes to smooth transient currents on the shared supply. It acts as a DC link stabilizer between the rectifier and the connected inverters, drawing power from the three-phase mains feed. The smoothing network also helps limit abrupt current changes that can occur when several connected drives switch from motoring to regenerative operation. This arrangement helps keep the shared DC rail stable when multiple axes accelerate, brake, or hold position at the same time.