In industries such as power plants and industrial manufacturing, UPS power supply systems are installed at important production sites to ensure uninterrupted production and safety. In order to ensure that the UPS power supply can provide reliable power to the load equipment in case of failure or maintenance, it is necessary to configure a bypass cabinet for the UPS.
UPS power requires three input power sources for normal operation: main mains power, bypass standby mains power, and battery. The normal power supply path is: main mains, charger, inverter, static switch, and load. When the main power supply is interrupted, the power supply path includes: battery, inverter, static switch, and load. When the battery discharge ends or the inverter fails, the power supply path is: backup mains, static switch, and load. If the backup mains voltage exceeds the standard, the UPS static switch will reject the backup mains power supply to the load, which will inevitably cause power interruption. Therefore, the quality of backup mains power is crucial for UPS systems, and the BPS series bypass automatic voltage stabilization equipment (referred to as bypass cabinet) is designed specifically for UPS’s requirements for backup mains power.
The external dimensions, color, and structure of the electronic bypass cabinet are compatible with GUTOR’s various series of UPS power supplies. Its technical performance indicators meet the needs of normal UPS operation, and it has protection functions such as input isolation, automatic output voltage stabilization, bypass maintenance, phase loss, overload, overvoltage, short circuit, and delayed output. When the UPS power supply itself fails or stops supplying power due to overload, the UPS automatically switches to bypass power supply. When the instability of the municipal power grid leads to voltage sag or high voltage, voltage surge, damping oscillation, power interference, power surge, power peak, three-phase power imbalance, exchange transient and harmonic distortion, etc., the bypass cabinet can also play a role in stabilizing, isolating and shock resistance to avoid damage to the equipment.
The electronic bypass cabinet mainly consists of four parts: isolation transformer, output voltage compensation transformer, output voltage automatic compensation regulator, and automatic voltage stabilization control unit. The isolation transformer completely isolates the system output from the power grid, with a rated primary/secondary voltage of 380/220V AC; The output voltage automatic adjustment device consists of an automatic voltage stabilization control circuit, a voltage regulating motor, a compensating voltage regulator, and a compensating transformer. The device has the characteristics of high adjustment sensitivity, strong anti-interference ability, stable working performance, and is equipped with an output voltage accuracy adjustment circuit.