UPGF6-27822-18 Circuit Protection

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Circuit Breakers

Circuit breakers are essential components of any electrical system, and have a major role in safeguarding people and equipment from electrical hazards. UPGF6-27822-18 is a circuit breaker manufactured by Siemens, which is specifically tailored to the industrial needs of today. This article explores the applications of the UPGF6-27822-18 circuit breaker, as well as its working principle.

UPGF6-27822-18 Applications

The UPGF6-27822-18 circuit breaker is a low-voltage switchboard breaker for use in industrial applications such asshipyards, ventilation systems, packagers, and other industrial installations.The breaker is rated for 800-4000 A at 500 V, with a breaking capacity of up to 65,000 A. The breaker has a variable frequency control system so that the switch-off time can be adjusted depending on the short circuit rating. It is also equipped with a built-in trip protection mechanism, so that it can be used with both fuses and circuit breakers.

The UPGF6-27822-18 circuit breaker is also suitable for use in hazardous areas, as it is certified to be compliant with both ATEX and IECEx standards. It has been designed to prevent arcing during switching-off operations, and has been tested for its shock, vibration, and drop impact resistance. Furthermore, it is suitable for operation in temperatures from -25°C to +60°C. All of these features make the UPGF6-27822-18 circuit breaker a flexible and reliable component for industrial applications.

UPGF6-27822-18 Working Principle

At the heart of any circuit breaker is a bimetallic strip. The bimetallic strip in the UPGF6-27822-18 consists of two different metals - one with a high thermal coefficient of expansion and one with a low thermal coefficient of expansion. When the current passing through the circuit increases beyond a certain set point, the high thermal coefficient metal expands faster than the low thermal coefficient metal. This causes the bimetallic strip to bend and trip the circuit breaker.

The UPGF6-27822-18 circuit breaker is also equipped with a variable frequency control system. This allows the switch timing to be adjusted in line with the short circuit rating. If the current passing through the circuit increases beyond a second set point, the variable frequency control system will trigger the breaker to switch off.

The UPGF6-27822-18 is fitted with an integrated phone card switch, allowing the breaker to be reset in the event of a short circuit. This is a useful feature as it prevents the need for manual intervention. Furthermore, the breaker has been designed to provide protection against overvoltage or direct current faults.

Conclusion

The UPGF6-27822-18 circuit breaker from Siemens is a reliable and flexible component for industrial applications, such as ventilation systems, packagers, and other industrial installations. Its integrated features, such as variable frequency control and a built-in protection mechanism, make it a safe and versatile circuit breaker. In addition, its wide temperature range, shock, vibration, and drop impact resistance certification make it suitable for use in hazardous areas. For these reasons, the UPGF6-27822-18 is an excellent choice for industrial applications.

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