SBW/DBW Three-Phase/Single-Phase Automatic Compensation AC Voltage Stabilizers

Single-phase capacity of the DBW series ranges from 10KVA to 500KVA.

Three-phase 380Vac ±20%

Customizable options with variations of ±30% and ±40%.

Single-phase 220Vac

Output voltage can be tailored to meet specific customer requirements, including customized options such as 200V, 208V, 400V

The main control board adopts microelectronics surface-mount technology, with the core circuit utilizing integrated chips imported from Cirrus Logic and high-speed ADC for absolute voltage precision sampling. The drive circuit employs Rui Neng Semiconductor’s controllable silicon electronic switch, achieving a switching speed of ≤40mS. The human-machine interface facilitates 485 communication connection for convenient and swift interaction. The surge-resistant design of the switch power supply and the professional pulse group level of EMC power and communication interfaces reach 4000V, 0.5KHz/100KHz, effectively ensuring stable control of the entire system.

The regulating coil utilizes SBEB-155 class T2 flat copper wire, synthesized through lateral winding and grinding-polishing techniques, demonstrating excellent resistance to current impact and suitable for high-current impact loads. The transmission mechanism employs machine tool guide slide technology, characterized by a low friction coefficient, fast adjustment speed, high accuracy, and smooth operation. The brushes are made of highly wear-resistant powdered alloy carbon blocks, ensuring a brush lifespan of over 10 years and guaranteeing the long-term stable operation of the regulating system.

The magnetic core adopts WISCO 35WW310 high-permeability silicon steel sheets with a permeability of 17,000 GS and a magnetic loss of only 1.35W/KG. The coil is wound with temperature-resistant polyester film rated at 155-180°C, and the interlayer uses high-strength composite DMD insulation paper. The transformer insulation is produced through fully automatic vacuum impregnation and drying processes. The transformer achieves an operating efficiency of over 98%. The automatic monitoring of crucial indicators such as insulation resin varnish viscosity, vacuum degree, operating time, and temperature ensures the stability of product quality. This significantly enhances the transformer’s insulation strength, insulation resistance, overload capacity, and safety coefficient.

The device features a 7-inch display screen enclosure capable of displaying interfaces in both Chinese and English. It can show the status information of the return-to-center system and simultaneously display input and output parameters of the voltage stabilizer, including three-phase phase voltage, three-phase line voltage, output current, total active power output, total reactive power output, power factor, output frequency, etc. The display screen is equipped with dual RS485 circuits. In addition to the one standard RS485 used to obtain information from the return-to-center and metering systems, an optional RS485 can be selected for remote communication. The remote communication protocol can choose the passive MODBUS protocol or connect to the actively proprietary protocol used by the super terminal for seamless online communication.