Features of Dual Power Products
The integrated SSKBOS dual power supply is mainly composed of digital SSKBO control and protection switches, which have low-voltage electrical product protection functions such as fuses, circuit breakers, contactors, starters, isolators, thermal relays, overload (or overcurrent, phase failure) protection relays, overvoltage and undervoltage relays, motor comprehensive protectors, intelligent leakage relays, etc
The SSKBOS dual power automatic transfer switch belongs to CB level ATSE, while the SSKBOSP dual power automatic transfer switch belongs to PC communication ATSE. ATSEs with a rated current of 125A or above are only PC level and are particularly suitable for the end of the main load. It is a new type of highly integrated and reliable digital dual power product
All functions of the SSKBO series control and protection switches are coordinated internally, reducing installation positions and simplifying wiring. Integrated, modular, small in size, aesthetically pleasing in appearance, with current specifications ranging from 0.1 to 1250 amperes, wider applicability, and more flexible installation. It can provide 3 or 4 poles (4P or 3P+N)
The digital products of SSKBOS dual power supply have reliable electrical and mechanical interlocking, simple structure, high reliability, and ensure safer operation and use
Due to the use of motorless conversion in SSKBOS dual power supply, the conversion speed between common power supply and backup power supply is fast, with a minimum conversion action time of only 500 milliseconds. The integrated digital SSKBOS dual power supply is a three position type, with 0 indicating that both the common and backup power supplies are in the off position, making it convenient for lower level circuit maintenance. The working current can be adjusted according to the load or user needs, with easy operation, flexible installation angles, and a wide range of applications
The built-in function module DV3 digital controller monitors the major phases of the main circuit to ensure that the load obtains power that meets the usage requirements
Usage category: AC-33B, electric motor load or mixed load containing electric motor, resistance load, and incandescent lamp load of less than 30%
It can achieve various control requirements such as self pitching and self recovery, self pitching without self recovery, pitcher recovery, hand pitching self recovery, and pitcher recovery
When any phase of the power supply is detected to have a deviation, switch between power sources to ensure their reliability and continuity of power supply
Function and purpose
A. SSKBOS dual power automatic transfer switch is mainly used in two power supply systems (grid to grid, grid to self provided power supply) with AC rated frequency of 50Hz or 60Hz, rated voltage up to 415V, and rated current up to 125A. When one power supply is found to be under voltage, over voltage, phase failure, or under voltage, it automatically or manually switches between the power supplies to ensure its reliability and safety. The switching device is suitable for emergency power supply and stops supplying power to the load during power switching. According to user needs, various protection functions such as overload, overcurrent, phase failure, short circuit, undercurrent, etc. can be selected to form a CB level PC level dual power automatic transfer switch electrical device, realizing automatic or manual control and protection of dual power supply. CB grade products are capable of connecting, carrying, and breaking currents under normal conditions, including specified overload conditions, and can connect, carry for a certain period of time, and break currents under specified extraordinary conditions (such as short-circuit currents)
B. The product complies with GB14048.11 "Low voltage switchgear and control equipment Part 6: Multifunctional appliances Part 1: Automatic transfer switchgear" and IEC60947-1 "Low voltage switchgear and control equipment Part 6: Multifunctional appliances Part 1: Automatic transfer switchgear" Product Model and Significance

SSKBO Dual Power Product Function Explanation
1. Self switching and self recovery: When the common power supply is normal, the DV3 digital controller sends instructions, the common power supply control and protection switch is closed, the backup power supply control and protection switch is disconnected, and the SSKBOS dual power automatic transfer switch is in the (1,0) state; When the common power supply is abnormal, the DV3 digital controller sends instructions, the common power control and protection switch is disconnected, the automatic power control and protection switch is closed, and the SSKBOS dual power automatic transfer switch is in the (0,1) state; When the common power supply returns to normal, the DV3 digital controller issues a command, the common power control and protection switch closes, the backup power control and protection switch opens, and the SSKBOS dual power automatic transfer switch is in the (1,0) state again
2. Self switching without self recovery: When the common power supply is normal, the DV3 digital controller sends instructions, the common power supply control and protection switch is closed, the backup power supply control and protection switch is disconnected, and the SSKBOS dual power automatic transfer switch is in the (1,0) state; When the common power supply is abnormal, the DV3 digital controller sends instructions, the common power supply control and protection switch is disconnected, the backup power supply control and protection switch is closed, and the SSKBOS dual power automatic transfer switch is in the (0,1) state; When the common power supply is restored to normal, the SSKBOS dual power automatic transfer switch is still in the (0,1) state. Only by restarting the SSKBOS digital control and protection switch or operating the reset button can the common power control and protection switch be closed, the backup power control and protection switch be disconnected, and the SSKBOS dual power automatic transfer switch be in the (1,0) state again
3. Feedback signal: a signal reflecting the working status of the SSKBOS dual power automatic transfer switch, usually taken out from the auxiliary contacts of the control and protection switch
Grid 1: The SSKBOS dual power automatic transfer switch power supply takes two power sources from the grid
Grid generator: The SSKBOS dual power automatic transfer switch power supply is taken from both the grid power supply and the generator power supply
Product Features
1. It has a three position configuration, namely the common power supply on, the backup power supply on, and the double tap (disconnect) position
2. It has both instantaneous and delayed types
3. Action time: Instantaneous conversion time is reduced by 80 milliseconds; The total action time of the delay type can be adjusted within 2-32 seconds
4. Usage category: AC-33B, electric motor load or mixed load containing electric motor, resistance load, and incandescent lamp load of less than 30%
5. Well protected, reliable control, complete signals, remote control, and flexible combination methods
6. The electrical design representation method that complies with GB standards and IEC60947 standards is shown in Figure 1
7. The schematic diagram of CB grade SSKBOS dual power supply is shown in Figure 2
The electrical schematic diagram of PC grade SSKBOS dual power supply is shown in Figure 3
Appearance and installation dimensions