RZW03.1-030-040
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The RZW03.1-030-040 braking resistor has a peak power rating of 27 kW, a thermal time constant of 100 seconds, and an IP23 protection class. Part of the RZW Braking Resistors series by Bosch Rexroth Indramat, it supports Sd 40% resistance at 10 Ω with a cross-section of 16 mm² and operates within a storage temperature range of -25°C to +70°C.
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Product Description:
Bosch Rexroth Indramat manufactured the RZW03.1-030-040. With a peak power rating of 27 kW, the Bosch Rexroth Indramat RZW03.1-030-040 brake resistor is designed for high power dissipation in industrial automation systems. In dynamic braking, when motor kinetic energy is converted into electrical energy and released as heat, this is crucial since it specifies the resistor's ability to withstand short power spikes. The 27 kW peak rating ensures it can withstand high short power loads without degrading, keeping the system stable and protecting the connected drive components. This is further enhanced by the 100s thermal time constant, which shows how well it dissipates heat.
For intermittent braking applications where fast cycling occurs, a larger time constant means a slow thermal response, allowing the resistor to absorb and release heat over a longer period of time. The Sd 40% and Sd 60% resistance values of the resistor are 10 Ω for the F3 type and 11 Ω for the F4 type, respectively. These numbers define the resistor's ability to limit current flow during braking, which has a direct impact on the motor deceleration performance. Durability is increased by the cross-sectional areas of 16 mm² (Sd 40%) and 25 mm² (Sd 60%), which provide enough conductor thickness to reduce resistive heating during continuous operation. Another important factor is the lowest connectable resistance of 8.75 W, which defines the lower limit for safe operation and prevents excessive current draw that can cause insulation failure or overheating.
The IP23 protection class protects the resistor from solid objects larger than 12 mm and water pouring at angles up to 15°. So, it’s suitable for industrial environments where dust and mild moisture is present. Also, by preventing material degradation from thermal expansion or contraction, the storage temperature range of -25°C to +70°C ensures operational integrity in harsh conditions. For long-term reliability, a clean working environment is required which is further emphasized by the requirement that supply air must be free of aggressive or electrically conductive gases.
Frequently Asked Questions about RZW03.1-030-040:
Q: What is the peak power rating of the RZW03.1-030-040?
A: The RZW03.1-030-040 braking resistor has a peak power rating of 27 kW. This allows it to efficiently handle high power levels during braking operations in industrial systems.
Q: What is the thermal time constant of this resistor?
A: The thermal time constant of the RZW03.1-030-040 is 100 seconds. This indicates how quickly the resistor can dissipate heat generated during braking, making it suitable for short bursts of energy dissipation.
Q: What is the protection class of the RZW03.1-030-040?
A: The RZW03.1-030-040 has an IP23 protection class, meaning it is protected against solid objects larger than 12 mm and water dripping at an angle of up to 15°. This ensures reliable performance in industrial environments where light exposure to water may occur.
Q: What is the resistance value of the RZW03.1-030-040 at Sd 40%?
A: The RZW03.1-030-040 has a resistance value of 10 Ω at Sd 40%. This is a key specification that influences the braking performance and energy dissipation characteristics of the resistor.
Q: What is the storage temperature range for the RZW03.1-030-040?
A: The RZW03.1-030-040 operates within a storage temperature range of -25°C to +70°C. This wide range allows it to be used in diverse environments, ensuring reliability in varying temperature conditions.
