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The diagram in Figure 2 shows a static bypass switch connected across a UPS. The UPS. could be a double conversion or a delta conversion or rotary type. The static bypass switch. provides a means to accomplish high-speed transfer to the bypass path in case of UPS.
A static UPS system usually consists of a battery to provide continuous source of electrical power ; a rectifier / charger to maintain battery charge and to provide input to inverter when utility power is available ; an inverter to provide power to load during normal operation ; a static switch to transfer load automatically and without disturbance ...