GB/T 7260.503-2020 Active

This part of GB/T 7260 specifies the performance and test requirements for mobile, non-mobile, and fixed-installation electronic DC output uninterruptible power supply systems (DC UPS). Such DC UPSs have the following characteristics:
——Powered by an AC voltage source of no more than 1,000 V;
——Providing a DC output voltage of no more than 1,500 V;
——Containing an energy storage device;
——The main function is to ensure continuous DC power supply to the load.
This part specifies the performance and test requirements for complete DC UPS systems (rather than individual DC UPS functional units). The performance and test requirements for individual DC UPS functional units are referred to in the IEC publications mentioned in the references, and they do not conflict with this part.
The power range of DC UPSs ranges from less than 100 watts to megawatts, meeting the requirements of various loads for power availability and supply quality. For information on typical DC UPS configurations and topologies, see Appendices A and B.
This part also includes the performance and test requirements for components such as circuit breakers, disconnect switches, and interconnect switches (if any) integrated into the DC UPS. These components interact with other functional units of the DC UPS to maintain continuous power supply to the load.
This part does not include:
——Traditional AC input distribution boards and their associated switches;
——Traditional DC distribution boards and their associated switches;
——Traditional AC UPSs covered by IEC 620403;
——Low-voltage DC power supply equipment covered by specific product standards (e.g., IEC 61204) and equipment covered by specific product standards (e.g., ITU communication standards);
——Systems where the output voltage is derived from rotating machines.
Note 1: This part assumes that UPS systems are primarily used for power supply to information technology (IT)