HVR03.2-W045N
HVR Power Supply Units
The Bosch Rexroth Indramat HVR03.2-W045N is a high-performance power stage in the HVR Power Supply Units series designed for industrial drive applications. Featuring a Mains Input Voltage range of 3 x AC 380 V to 480 V (±10%) and a regulated DC bus voltage of 750 Volts DC, this module efficiently converts three-phase AC input into a stable DC output. With a nominal Power Output of 45 kW and three-phase AC input at 50 to 60 Hertz, its primary function is to supply constant DC bus power to servo drives and inverters for precise motion control.
Incorporating an internal air cooling scheme with built-in blower, the HVR03.2-W045N maintains optimal thermal performance even under sustained load conditions. The unit delivers a continuous DC bus power output of 30 kW and a peak output of 135 kW for up to 0.3 seconds, enabling rapid acceleration and high-torque bursts. The peak bleeder power is 80 kW, and it can handle a maximum regenerated energy of 100 kWs. Power losses at maximum continuous output are limited to 626 Watts, with basic losses of 175 Watts and specific losses of 24 W/kW, underscoring its efficiency in power conversion. Unique design version 2 enhances reliability, while a vertical mounting orientation simplifies cabinet integration.
Designed for rugged industrial environments, this power stage carries a protection rating of IP10 per DIN 40 050 and requires an installation clearance of 300 millimeters to ensure adequate airflow. The permissible ambient temperature for optimal performance ranges from 5 to 45 degrees Celsius, with derated operation up to 55 degrees Celsius and storage conditions from -30 to 85 degrees Celsius. Maximum operating elevation is 1000 meters above sea level, and relative humidity can reach 95% (absolute humidity up to 25 g/m³). Weighing 24 kilograms, the unit draws a maximum control power of 850 VA and supplies 500 Watts of control voltage output. Its robust construction and precise regulation make the HVR03.2-W045N an excellent choice for enhancing reliability, efficiency, and performance in demanding industrial automation systems.
Technical Specifications
Cooling Method
Internal Air with built-in blower
Design Version
2
Mains Input Voltage
3 x AC 380 V to 480 V (± 10%)
Other Design Details
None
Output Voltage Type
Regulated DC bus voltage
Power Output
45 kW
Product type
HVR Power Supply Unit
Series
03
Frequently Asked Questions
What is the significance of the peak output (135 kW for 0.3 seconds) for the Bosch Rexroth Indramat HVR03.2-W045N?
It allows the power supply to handle short bursts of high power demand—such as rapid accelerations in robotics—without overloading. Continuous use at peak can overheat the internal components unless properly managed with cooling and duty cycle constraints.
How does the regeneration (regen) energy rating affect system design?
Regen capability (≈ 80 kWs in many listings) means the unit can absorb energy fed back from motors (e.g. during deceleration) and buffer or return it, reducing external braking resistor needs. System designers must ensure proper wiring, bus capacity, and safety protection to handle the energy flow.
How does the 750 V DC bus voltage impact compatibility with servo drives/inverters?
Devices connected must be rated for that bus voltage to avoid insulation breakdown or overvoltage damage; it allows for high-power drives to be run with lower bus currents, which reduces cabling & losses. Designers should ensure drive modules (HDS/HDD etc.) and protection circuits are specified for 750 VDC.
What control or auxiliary power is needed for this power supply?
It needs ~500 VA of control / auxiliary input power to run its internal systems, blower, control electronics, etc. Failure to provide adequate control power can lead to under‐performance or inability to properly regulate voltages.
How should the HVR03.2-W045N be integrated for safe handling of regenerated energy?
Ensure the DC bus and associated capacitors/chokes can handle the peak regen current, and include overvoltage protection or braking resistors if regen exceeds buffer capacity. Also, ground and safety interlocks must comply with standards to avoid dangerous voltage buildup.
Common Misspellings
HVR 03.2-W045N
HVR-03.2-W045N
HVR03.2W045N
HVR032W045N
HVR3.2-W045N
HVR03 2 W045N
hvr03.2-w045n
Internal Product Review
The Bosch Rexroth Indramat HVR03.2-W045N is a power stage designed for industrial drive applications. With a 45 kW nominal power output and peak output of 135 kW, it efficiently supplies DC bus power to servo drives and inverters. Ideal for industries such as robotics and automation, it ensures reliable performance even in demanding conditions.
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