PR3-E-36kW

Description

The PR3-E Series of thyristor stacks offers seamless and precise control of three-phase resistive loads using an advanced two-thirds control technique. Designed for high performance, these burst firing control stacks utilize fast pulse zero volts switching technology to minimize flicker and eliminate RFI problems. With built-in features such as automatic resetting temperature trips, integral semiconductor fuses, and efficient heatsinks, the PR3-E Series ensures reliability and safety. The range includes two models, a 36kW unit and a 54kW unit with forced-air cooling, both designed for easy installation with accessible signal and power terminals.

Key Features

• Seamless Three-Phase Control: Provides smooth and precise control of resistive loads.
• Advanced Technology: Utilizes fast pulse zero volts switching to reduce flicker and RFI.
• Flexible Control Options: Supports 0-10V DC, 4-20mA, and manual control via a 5kΩ potentiometer.
• Selectable Burst Fire Modes: Choose between slow and fast burst fire for optimal performance.
• Enhanced Safety Features: Includes automatic resetting temperature trip and integral high-speed semiconductor fuses.
• Efficient Cooling: Built-in heatsink and a cooling fan for the 54kW model.
• Fault Detection and Alarms: Detects phase loss, sensor loss, and over-temperature conditions with status LED indicators and voltage-free alarm relay outputs.
• Robust Construction: Durable terminal blocks and compact design with keyhole slots for easy mounting.

Applications

The PR3-E Series is ideal for controlling 3-wire, 3-phase floating-star or closed-delta configured resistive loads. It is perfect for the HVAC market, including air curtain applications, as well as industrial heating applications such as furnaces, ovens, dryers, and hot plates.

The PR3-E Series 36/54kW HVAC Range 3-Phase Burst Fire Power Controllers are engineered for seamless control of resistive loads in various industrial applications. With advanced features like zero volts switching, automatic temperature trips, and robust construction, these controllers ensure efficient and reliable operation. Whether used in HVAC systems or industrial heating applications, the PR3-E Series delivers precise control and easy installation.