Dual power supply circuit contactor mutual investment 2

Dual power for each load refers to the operation of two power supplies working simultaneously to handle the electrical load. In the event of a power outage, a contact switch automatically closes all load circuits that are not powered due to the outage. The circuit diagram illustrates this configuration. Under normal conditions, power is supplied to load segment A from power supply bus No. 1, while load segment B is powered from bus No. 2. It is important to note that circuit breakers QFi and QF2 must operate simultaneously (with a mechanical interlock ensuring that the main contacts act first) to prevent both power sources from merging instantaneously, which could lead to a short circuit.

The dual power supply system is designed to enhance reliability and ensure uninterrupted power delivery to critical loads. This system typically employs two independent power sources, which can be either from different locations or different types of supplies (e.g., mains and generator). The automatic transfer switch (ATS) or contact switch plays a crucial role in this setup, as it detects when one power source fails and seamlessly transitions the load to the alternative source without manual intervention.

In normal operation, the load is divided between the two power supplies. For instance, load segment A receives power from bus No. 1, while load segment B is connected to bus No. 2. This configuration not only balances the load but also provides redundancy. If one power source fails, the ATS quickly disconnects the failed source and connects the load to the functioning power supply, ensuring continuous operation.

The importance of circuit breakers QFi and QF2 cannot be overstated. These breakers are equipped with auxiliary contacts that ensure they operate in a synchronized manner. The mechanical interlock feature is critical; it prevents both breakers from closing at the same time, which could result in a short circuit due to the merging of two different power sources. The design must adhere to safety standards to mitigate risks associated with electrical faults, including overloads and short circuits.

The schematic diagram for this dual power supply system typically includes the two power sources, the ATS, circuit breakers, and the load segments. Each component must be rated appropriately to handle the expected load and fault conditions. Additionally, proper labeling and a clear layout are essential for maintenance and troubleshooting purposes.

Overall, a dual power supply system is an effective solution for applications requiring high availability and reliability, such as in data centers, hospitals, and critical industrial processes. Proper design, implementation, and maintenance of such systems are vital to ensure they perform as intended, providing peace of mind and operational continuity.Dual power for each load refers to work simultaneously by the two-way power supply and two power supplies, respectively, the burden of electricity load. When at the way in whic h the power outage, contact switch automatically closing all the load circuit is not powered by power outages. Circuit is shown. Under normal circumstances, the power to 1 A load segment power bus No. 2 to the power supply section B bus load. Note: The circuit breaker QFi, QF2 auxiliary contacts must At a time (available mechanical tone than the main contacts first action the whole), otherwise two different power sources will merge in an instant, causing a short circuit.