... Pure sine wave output 3. With manual bypass 4. UPS, ECO, EPS Mode Three Phase Double Conversion Online Uninterruptible ... Switching time0ms(adopted static switch )protectioninputvoltage,frequency ultralimit,phase wrong,phase lost outputovercurrent, short circuit, power factor lowEconomic ... of the most advanced and reliable UPS suppliers in China, Integrating development and manufacturing in-house. We ...