Considering that the UPS system is fully configured in the early stage of construction, but the actual system load rate is low, UPS5000-E is designed with an intelligent sleep function, which can…

Considering that the UPS system is fully configured in the early stage of construction, but the actual system load rate is low, UPS5000-E is designed with an intelligent sleep function, which can increase the system load rate and keep the system running efficiently. When the UPS5000E sleeps intelligently, at least how many power modules are redundant?