CPC1988J

Introduction to Solid State Relays and CPC1988J

Solid state relays are electronic devices that are used to control electrical circuits and equipment with a varying output voltage and current. Unlike their mechanical counterparts, they are capable of rapidly switching high currents and are much more reliable. The CPC1988J is a high power SSR from Crydom that can be used for switching high wattage loads up to 250 amps and is designed to handle the full 600VAC line voltage. It provides accurate control, high operating speed, and long-term reliability.

Design of Solid State Relays

Solid state relays consist of a pair of electrically isolated semiconductor switching elements and control logic. The control logic is used to control the operation of the two switching elements. The switching elements are either PIN diodes or thyristors, depending on the type of SSR. When the logic voltage is applied, the input terminal is connected with the output terminal and the electric current begins to flow.

The CPC1988J solid state relay utilizes a power level SCR switching element which is rated for 250A. Its CRD design provides maximum output current and low on-state voltage drop. The relay is designed with a zero-crossing circuit which ensures fast turn on/off of the output without causing any transient over-voltages.

Application of the CPC1988J

The CPC1988J solid state relay is suitable for a wide range of applications. It is ideal for control and switching of high wattage loads such as transformers, solenoids, motor controllers, and heaters. The CPC1988J can be used for motor control applications that require precise control of starting torque and speed. It can also be used in industrial control systems, process control, and automation applications.

Working Principle of the CPC1988J

The CPC1988J provides efficient and accurate control of high current and voltage with zero crossing power switching. The relay uses a rectified zero-crossing signal from the output terminal to turn on the SSR at nearly the same moment the line voltage reaches the zero crossing level. This ensures that the on/off switching of the SSR is smooth and efficient reducing the risk of transient over-voltages. Furthermore, the power level SCR switching element provides fast switching speeds (3 to 5 cycles) and low on-state voltage drop.

Conclusion

The CPC1988J solid state relay from Crydom is a reliable and efficient switching element for high wattage loads of up to 250 amps. The relay utilizes a zero-crossing circuit and a power level SCR switching element to provide accurate control, fast switching speeds, and low voltage drop. The CPC1988J is suitable for a wide range of applications including motor control, industrial control systems, and process control.