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Allen Bradley 1321 Power Products 1321-RWR12-DP

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1321-RWR12-DP

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The 1321-RWR12-DP reactor is a line reactor that is used as a power-conditioning device for Variable Frequency Drives (VFDs) in order to keep the excessive over-voltages produced in the inverter section of those devices under control. These over-voltages can potentially lead to electrical arcs known as partial discharges or the corona effect in the windings of the motors, and this will damage the insulation and render the system unusable. Rated for a fundamental current of 12 Amps, the 1321-RWR12-DP line reactor is easy to install with integrally mounted terminal blocks.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1321-RWR12-DP

ManufacturerAllen Bradley
CategoryDrives
Product Line1321 Power Products
Part Number1321-RWR12-DP
Weight15.75 lbs (7.14 kg)
EnclosuresIP00 (Open)
Harmonic CompensationAll line reactors are compensated for the additional currents and high frequencies caused by the presence of harmonics
Impedance3%
Overload Rating300% of fundamental current for (1) minute
Max. Rated Voltage600V AC, 50/60 Hz frequency
Max. Switching Freq.4 kHz
Temperature Rise115 °C
Dielectric Strength4000 Volts rms (5600 volts peak)
Inductance Curve100% at 100% current, 100% at 150% current, 50% at 350% current
Insulation SystemClass H (180 °C or better)
ImpregnationHigh bond strength epoxy impregnation, 4000V high dielectric strength
Ambient Temperature45 degrees Celsius
U.L. ListedUL-508 - IP00, IP20, and IP11
InternationalConforms to VDE 0550
CENot certified
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The 1321-RWR12-DP reactor is a line reactor whose main function is to condition the output power of Variable Frequency Drives (VFDs) so that the excessive over-voltages normally produced in the inverter section of those devices can be reduced and kept under control. These over-voltages normally occur as a result of using Insulated Gate Bipolar Transistors (IGBTs) for Pulse Width Modulation (PWM), and they can potentially lead to electrical arcs known as partial discharges (or a corona effect) in the windings of the motors, and they damage the insulation and rendering the machine systems unusable. Neglecting to use line reactors such as the 1321-RWR12-DP line reactor can also accelerate the deterioration of the drive’s electronic components as a result of the reflected wave phenomenon, in which high spikes of energy are reflected to the drive because of the different impedances of the motors and their corresponding wiring.

Line reactors like the 1321-RWR12-DP reactor are designed to reduce the effects of the accumulation of energy in the cables and windings of the motors driven by the new generation of VFD’s that use IGBT’s because of their limited power consumption and faster switching capabilities. These IGBT’s are so fast at switching drives on and off that there is not enough time for the system to adjust to the new electrical requirements by charging and discharging as a regular capacitor would do. Installing a 1321-RWR12-DP line reactor at the output of the VFD will help to reduce the over-voltages applied to the cables and the motors, therefore controlling the appearance of reflected waves in the system. The 1321-RWR12-DP line reactor is recommended for handling a fundamental current of 12 Amps, as shown in the product’s catalog and related technical documentation. The installation of the 1321-RWR12-DP line reactor is very straightforward because the reactor is provided with integrally mounted terminal blocks and it comes with clear instructions for a simplified installation process by a qualified technician.