RZW03.1-045-025
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The Bosch Rexroth Indramat RZW03.1-045-025, part of the RZW Braking Resistors series, is constructed with a galvanized steel plate housing and features a fixed resistor type. It has a power class of 45 kW and a thermal time constant of 150 seconds. Its dimensions are 795mm by 770mm by 395mm, and it weighs 51 kilograms.
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Product Description:
Bosch Rexroth Indramat manufactured the RZW03.1-045-025. Galvanized steel, a material with many technical and physical benefits, is used to house the RZW03.1-045-025 brake resistor. By applying a layer of zinc to steel, which is cathodic protection, galvanized steel is created. Zinc is more electrochemically reactive than iron so it oxidizes more quickly in the presence of corrosive substances and protects the steel underneath from rust. In industrial environments, this sacrificial corrosion mechanism is essential to extend the life of the brake resistor. The mechanical strength of galvanized steel and the zinc coating’s ability to withstand corrosion means the internal parts of the braking system are protected from environmental degradation and physical damage, and the system remains reliable and intact. An IP23 rating means the brake resistor can withstand water and solid object intrusion. A ‘2’ in the rating means protection against solid foreign objects with a diameter of 12.5mm or more, and a ‘3’ means protection against water sprays at an angle of up to 60 degrees from the vertical, according to IEC 60529.
By following this standard the RZW03.1-045-025 protects its electrical components and functionality and safety in harsh operating conditions. The 45kW power class of the RZW03.1-045-025 is one of its key features. Power in electrical engineering means the rate of energy dissipation. The purpose of this brake resistor is to convert the electrical energy produced during motor-driven device deceleration into thermal energy. The maximum rate at which the resistor can dissipate this energy without exceeding its thermal limits is 45kW. In high inertia industrial applications where braking is required to avoid overvoltage situations and ensure smooth, controlled deceleration, the ability to handle such a high power load is essential. To manage the thermal load during braking cycles, the material composition and design of the resistor are tuned for effective heat dissipation.
The RZW03.1-045-025 is a fixed resistor in electrical terms, meaning its resistance doesn’t change while it’s operating. Its function in a brake circuit where kinetic energy is converted into electrical energy and released as heat depends on this constant resistance. Consistent energy dissipation is guaranteed by the resistor’s predictable behavior, which is controlled by Joule’s law (P=I²R) and Ohm’s law (V=IR). For accurate control of industrial automation processes, steady braking torque is required, and this consistency is critical. Additionally, the resistor’s thermal time constant is 150 seconds, which means how long it takes the resistor to reach 63.2% of its maximum temperature after a change in power dissipation. The overall system stability and reliability are further improved by this slow reaction, which helps to manage short power spikes without overheating quickly.
Frequently Asked Questions about RZW03.1-045-025:
Q: What is the power class of the RZW03.1-045-025 braking resistor?
A: The power class of the RZW03.1-045-025 is 45 kW. This indicates the amount of power the resistor can handle, which is crucial for dissipating excess energy during braking cycles in industrial automation systems.
Q: What is the thermal time constant of the RZW03.1-045-025?
A: The thermal time constant of the RZW03.1-045-025 is 150 seconds. This means the resistor takes 150 seconds to dissipate most of the heat generated, allowing for efficient heat management and preventing overheating.
Q: What type of housing does the RZW03.1-045-025 have?
A: The RZW03.1-045-025 features a galvanized steel plate housing. This provides durability and protection against environmental factors, ensuring reliable performance in industrial settings.
Q: What is the protection class of the RZW03.1-045-025?
A: The protection class of the RZW03.1-045-025 is IP23. This means the resistor is protected against solid objects larger than 12mm and can withstand direct sprays of water, making it suitable for industrial environments where such conditions are present.
Q: What is the weight of the RZW03.1-045-025 braking resistor?
A: The weight of the RZW03.1-045-025 is 51 kilograms. This weight is important for determining the structural support required for installation and the handling logistics during setup.
