Use and scope of application

NMCPSS dual power automatic transfer switch appliance is mainly used in two-way power supply system with rated frequency of 50Hz (60H2) and rated current up to 125A. One of the power supplies finds undervoltage, overvoltage, phase failure and loss. Automatic or manual switching between power sources during voltage control to ensure the reliability and safety of the power supply. The switching device is suitable for emergency power supply, and stops supplying power to the load during power switching. It can be equipped with overload and overcurrent according to user needs. Various protection functions such as phase failure, short circuit and undercurrent can be used as CB level or PC level dual power automatic transfer switch electrical appliances to realize automatic or manual control and protection of dual power supplies. The CB grade product is capable of switching on, carrying and breaking currents under normal conditions, including specified overload conditions, and is capable of switching on, carrying a certain period of time and breaking the specified abnormal current (such as short-circuit current).

Product model meaning

Features

1, the integrated NMCPSS dual power supply is based on NMCPS control and protection switch, with fuses, circuit breakers, starters, isolators, thermal relays, overload (or overcurrent, phase failure) protection relays, overvoltage and undervoltage Relay, motor integrated protector, intelligent leakage relay and other low-voltage electrical products protection functions in one.

2. NMCPSS dual power automatic transfer switch belongs to CB level ATSE, NMCPSSP dual power automatic transfer switch belongs to PC level ATSE, ATSE with rated current above 125A is only PC level, especially suitable for the end of main load, it is a new type of high integration. High reliability digital dual power products.

3. The NMCPSS series controls and cooperates with all functions of the protection switch to reduce the installation position and simplify the wiring.

4 integrated, modular, small size, beautiful appearance, more flexible installation, can provide 3 pole or 4 pole (4P or 3P + N).

5. NMCPSS dual power products have reliable electrical interlocking and mechanical interlocking, simple structure, high reliability, and ensure safe operation and use.

6 Because the NMCPSS dual power supply uses no motor conversion, the conversion speed between the common power supply and the standby power supply is fast, and the minimum conversion action time is only 500 milliseconds.

7. NMCPSS dual power supply is three-position, with 0 is the common and standby power supply are in the opening position, which is convenient for the lower level circuit maintenance.

8 easy to operate, flexible installation angle, wide application.

9. The built-in function module controller monitors the phases of the main circuit to ensure that the load obtains the power supply that meets the requirements for use.

10 Class of use: AC-33B, motor load or mixed load containing motor, resistive load and incandescent load below 30%.

11, can achieve self-return, self-recovery, self-recovery, hand-pitch, hand-return, self-recovery and other control requirements.

12. When any phase of the power supply is detected to be biased, the power supply is switched to ensure the reliability and continuity of the power supply.

Operation, installation dimensions and wiring diagram