330-T25 CONTROL CONCEPTS Programmable controller

Description

330-T25 CONTROL CONCEPTS Programmable controller

Product Dimensions：

Product Description

The Control Concepts 330-T25 is a sophisticated, solid-state SCR Power Controller designed to precisely regulate the amount of AC power delivered to a load, such as industrial heaters, furnaces, or transformers. It operates using a three-phase electrical input.

Unlike simple mechanical contactors, the 330-T25 uses SCRs to rapidly switch the current ON and OFF, modulating the average power flow. The control method is typically either:

• Phase Angle Firing: Modulating the firing point of the SCRs within each AC half-cycle to vary the power (used for very precise control).

• Zero Crossover Firing (Burst Firing): Switching the entire cycle ON or OFF at the zero-crossing point to minimize harmonics (used for thermal systems).

The 330-T25 accepts a low-level analog or digital control signal from a temperature controller or PLC and converts it into the necessary firing pulses to regulate the high-power output.

Product Parameters

Product Advantages

• Precise Power Control: Offers extremely accurate and repeatable power delivery, crucial for maintaining tight temperature tolerances in demanding processes.

• Solid-State Reliability: Since it has no moving parts (unlike mechanical relays), it provides a significantly longer lifespan and requires less maintenance.

• Fast Response Time: Provides near-instantaneous power modulation in response to the control signal, eliminating lag in the control loop.

• Harmonic Reduction: If using Zero Crossover Firing, it dramatically reduces electrical noise and harmonic distortion compared to phase angle firing (though phase angle is more accurate).

Precautions

• Fusing and Protection: External high-speed fuses must be installed in line with the SCR unit to protect against catastrophic short-circuit failures, as standard fuses are often too slow to protect the semiconductor devices.

• Heat Dissipation: Due to the high current switching, SCR controllers generate significant heat. The unit must be mounted on a proper heatsink and often requires adequate ventilation or forced-air cooling to prevent thermal shutdown and damage.

• Load Type: The controller must be matched to the load type (e.g., resistive, inductive). Using the wrong firing mode for an inductive load (like a transformer) can lead to problems.

• Installation: Installation must be performed by a qualified electrician, adhering to high-voltage safety standards and the manufacturer’s specific mounting and wiring requirements.

Product Applications

The 330-T25 is used in any industrial process requiring high-precision AC power regulation:

• Industrial Heating: Controlling the heating elements in furnaces, ovens, kilns, and heat-treating equipment.

• Thermal Systems: Used in plastics and rubber industries for regulating the temperature of extruders and injection molding machines.

• Transformer Control: Precisely adjusting the primary voltage of transformers to control output.

• Laboratory and Research: Providing stable and highly controllable power for testing and experimental heating setups.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

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