TVD1.3-08-03RV Bosch Rexroth Indramat
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The Bosch Rexroth Indramat TVD1.3-08-03RV is part of the TVD Power Supply Modules series and weighs 10.5 kg. This module provides a nominal DC bus voltage of 320 V DC with a continuous DC bus power of 7.5 kW. It supports a maximum ambient temperature of 55 °C and has a peak DC bus power of 22.5 kW for 0.3 seconds.
Internal Product Review
The TVD1.3-08-03RV is a Bosch Rexroth Indramat TVD power supply module with a 320 V DC nominal bus voltage and 7.5 kW continuous DC bus power. Bleeder performance stands out technically, with 20 kW peak power and 30 kWs maximum regenerated energy. Low ±15 V ripple of 0.1% supports clean auxiliary supply performance, making this module a strong choice for demanding drive systems.
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Product Description:
The TVD1.3-08-03RV is a power supply module produced by Bosch Rexroth Indramat within the TVD Power Supply Modules series. It converts three-phase mains energy into a stabilized DC bus and auxiliary logic voltages so drive controllers in an automation line receive regulated power without additional converters. By integrating a braking resistor and energy buffering, the unit supports servo axes that cycle between motoring and regenerating modes. This arrangement allows one supply section to serve multiple connected drive axes while keeping power distribution centralized inside the cabinet.
The module delivers a continuous DC bus capability of 7.5 kW at a nominal bus level of 320 V with a permitted tolerance of ±5%. For acceleration bursts, it supplies up to 22.5 kW for 0.3 s, while the bleeder circuit dissipates 20 kW at peak and 0.5 kW continuously to absorb returned energy during braking. When extra ride-through capacity is needed, as much as 70 mF can be connected directly to the DC bus. Base thermal loss is 75 W, and power dissipation reaches 180 W with the bleeder inactive as well as at maximum power. Electronics control sections draw 300 VA from the mains, and the module derates above the 55 °C ambient limit. The low internal loss per kilowatt helps reduce the heat load inside the enclosure during normal operation.
Two auxiliary supplies are provided: the +15 V rail sustains 2.5 A, and the +24 V rail furnishes 7.5 A. Ripple is held to 0.1% on the ±15 V pair and 2% on +24 V, which supports stable analog and digital control electronics during continuous operation. Power loss per unit output is limited to 14 W/kW, and the assembly weighs 10.5 kg. Regenerated energy is handled by the internal bleeder so the DC bus voltage remains within safe limits during deceleration. The published capacitance limit should be observed so dynamic braking behavior remains stable during rapid load changes.
