RZW03.1-011-025
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The Bosch Rexroth Indramat RZW03.1-011-025 braking resistor, part of the RZW Braking Resistors series, features a galvanized steel housing and delivers a power class of 11 kW. It has a resistance of 22 Ω, an IP23 protection class, and supports a peak power of 10 kW. Weighing 7 kg, its dimensions are 335 mm tall and 230 mm wide.
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Product Description:
The RZW03.1-011-025 is a compact and lightweight braking resistor designed by Bosch Rexroth Indramat to protect drive controller units from excess heat generated during motor deceleration. This converter is specifically intended to be used with controllers belonging to the RD 500 series; it has a power classification of 11 kilowatts and maintains a switching duty of approximately 25 per cent. During motor deceleration, the excess heat transmitted into the drive controller is sent to this resistor unit, where it is promptly converted into heat. Although the resistor does not have an internal air blower, it is intended to be installed directly above the controller housing, where air blowing is utilized for cooling operations. The actual resistive element in the RZW03.1-011-025 braking resistor is installed inside an insulating ceramic material with an excellent heat conduction property. The insulating material is also produced from non-flammable metals.
The RZW03.1-011-025 converter has a internal resistance value of 20 ohms, its peak power capacity is about 32 kilowatts. Also, during the operation of this unit, the thermal time constant is maintained at 185 seconds with a line cross-section of approximately 2.5 millimeters squared. The total weight of this product is approximately 2.3 kilograms.
The RZW03.1-011-025 braking resistor comes with a type plate containing information that can be used for its easy identification after delivery. The delivery package used for the unit is also a recyclable cardboard box. The operation environment of this unit must be between that range of 0 to about 40 degrees Celsius, and its storage temperature should also be between -25 to 70 degrees Celsius. During the installation of this unit, a minimum clearance of 100 millimeters should be maintained above that unit.
Frequently Asked Questions about RZW03.1-011-025:
Q: Does the RZW03.1-011-025 have any air blower?
A: There is no air blower in this unit, however it should be installed above a drive controller where it can utilize the exhaust air from controller.
Q: Can the RZW03.1-011-025 be used with any drive controller?
A: No. This unit is built specifically for controllers belonging to the RD 500 series.
Q: What is the ambient temperature recommended for the operation of this motor unit?
A: The RZW03.1-011-025 is designed to be used between 0 to about 40 degrees Celsius.
Q: Is the RZW03.1-011-025 affected by humidity?
A: Yes. Relative humidity around the unit must not exceed 90 percent. Water condensation should also be avoided.
Q: What is the protection category of this industrial resistor?
A: The RZW03.1-011-025 is classified as an IP23 unit.
