Product Description:

The TVD 1.3-15 power supply module is manufactured by Bosch Rexroth Indramat and belongs to the TVD Power Supply Modules series. As a regulated DC bus source, it feeds multiple drive controllers in an automation cabinet and converts incoming three-phase energy into stable low-voltage auxiliary supplies and a shared intermediate circuit. Version 3 of this module supports installation at elevations up to 1000 m and operates at ambient temperatures up to 55 °C while retaining its IP10 open-frame rating, making it suitable for enclosed machine cabinets where forced ventilation is provided.

The unit draws 300 VA from the mains yet can supply the drive bus with a continuous output of 15 kW. For short acceleration events, the DC link can rise to a peak capability of 45 kW, allowing connected inverters to deliver high motor torque without an additional supply. Excess kinetic energy is absorbed by an internal resistor network rated for 1 kW continuously and up to 40 kW in brief peaks, preventing overvoltage during regenerative braking. Internal switching and filtering components dissipate a baseline of 75 W, a figure that must be considered when sizing enclosure cooling airflow. Output ripple on the ±15 V and 24 V auxiliary rails is held to 0.1% and 2% respectively to protect control electronics.

During deceleration cycles, the module can absorb up to 60 kWs of regenerated energy before external braking is required. Thermal loading can reach a maximum heat rejection of 330 W under rated load, and cabinet ventilation must accommodate this value. The ±15 V service rail delivers a steady 2.5 A for analog circuitry, while the isolated 24 V logic rail supplies 7.5 A to sensors, relays, and fieldbus interfaces. At 11.2 kg, the assembly can be mounted vertically in the Series 1 backplane without additional support brackets, and its open-top connection area simplifies bus bar access.