UPG12-22477-3 Circuit Protection

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Circuit breakers are widely used in the electrical industry in order to protect electrical systems and equipment from short-circuits, overloads, and other hazardous conditions. UPG12-22477-3 is one such circuit breaker, and it is important for professionals to understand its application field and working principle in order to best use the technology.

Application Field

UPG12-22477-3 is a breaker specifically designed for medium-voltage applications, such as for power distribution in residential or commercial buildings. It is especially suited for installations in which the current required is between 100 and 2400 amps. Additionally, it is suitable for the protection of individual motors and electrical groups, and it is commonly used for outdoor installations in communities, hospitals, industrial plants, or similar locations.

Working Principle

At the center of the UPG12-22477-3 is an oil circuit breaker, which functions as a switch. When current passes through it a metallic ribbon, also known as the arc-interrupt device, melts and interrupts the flow of current. This ensures that the circuit is continuously protected and kept safe from any risk or excessive current.

The circuit breaker is further operated by an electromagnet coil, which is mounted onto the arc-interrupt device. When an excessive voltage is detected, the electromagnet quickly trips the circuit breaker, and in some cases the electromagnet can be adjusted to trip at a preset voltage or current.

Specifications

UPG12-22477-3 has a very small operating current, as low as 0.25 amps in normal operation and 0.4 amps or lower in emergency cases. The breaking capacity of the breaker is 800 MVA, and the noise level after breaking is only 80 dB. Additionally, the breaker features a unique two-step contact system which utilizes silver-nickel contacts, ensuring superior performance and lower maintenance requirements.

Conclusion

UPG12-22477-3 is a powerful and reliable medium-voltage circuit breaker with superior performance and low maintenance requirements. It is specifically designed for applications requiring from 100 to 2400 amps, and it utilizes a unique two-step contact system which ensures that the circuit is always protected from dangerous conditions. Understanding the application field and working principles of the UPG12-22477-3 is essential for any professional working with electrical systems and equipment.

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