2P18U3H/22

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2P18U3H/22 is a multifunctional, integrated, autonomous control device protecting three-phase motors from overload conditions and accompanying phases sequence fault protection. Its application fields include small and medium-sized motor, pump, fan, etc. This device adopts advanced digital microelectronic technology, achieving digital display, setting, setting and non-setting, automatic thermal resetting, fault display and protection, delay compensating, etc feature.

The device features two phase start mode, three phase start mode, overload condition monitoring, and automatic thermal resetting with high overload relay. The device can start up the three-phase motor with two-phase voltage or three-phase voltage, be capable of detecting over-load condition, and preventing motor from sudden dead load. The overload protection relay provides protective when the phase current exceeds the setting current value, thereby minimize the damage occurred to the motor.

The working principle of the 2P18U3H/22 device is quite simple yet effective. The device works by monitoring the phase current of a three-phase motor at all time. It is designed to provide overload protection to ensure any overload condition on the motor are detected and the motor trips off if any such condition is detected. It also detects motor phase sequence fault protection with built-in logic circuits. The device also comprises a delay compensating loop which ensures a smooth acceleration of the motor during start-up and shutting down.

In addition, the device also has motor overload relay protection to guard against overload conditions. The relay trips off the motor whenever the current load of the motor goes beyond the upper limit. The device also monitors the power voltage input, and ensures the power voltage input is within the range of the motor. It also has a digital display to show the current working condition of the motor.

In conclusion, the 2P18U3H/22 device provides an economical solution for the protection and control in motor applications. Its wide application field and advanced working principles make it an attractive and cost-effective alternative for motor protection and control. It is both reliable and cost-effective and boasts a solid performance on the field.

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