Gridstone Electric Co., Ltd.  

Product Name: Digital Voltage Stabilizer for Nc Machine Brand: Gridstone Application Range: Industry, Bank, Data Center, Hospital, etc Iron Core Shape: E Size: Small Frequency: Power Frequency Usage: Servo Voltage Stabilizer Phase: Three Phase Current Type: AC Trademark: GridStone Transport Package: Carton / Wooden Box Specification: 20kVA to 3200kVA Origin: Shanghai, China Product Description Features1. Specially designed for elevator and lift equipments2.Variable transformer with columnar design3. Digital control system. Intelligent sensing and protection.4.Efficiency upto 99%5.Independent or Dependent Three Phase Regulation subject to the order6.Rich protection functions7.Manual bypass8.EMI/RFI filter ( optional ) , Surge protection ( optional ), Remote control with 485 ( Optional )SpecificationInput VoltageSingle phase:220V or 230V or 240V, Three phase: 380V or 400V or 415VInput Voltage tolerance+/- 15%, +/-20%, +/-30%, +/-45%Frequency50HZ /60HZOutput Voltage Tolerance+/-2% typical ( +/-1% optional )Over load capability300% 1sec, 120% to 200% 20sec, 100% to 120% 15minResponse time <0.1sCorrection time <1sEfficiency >97% typical (modelsbelow 250kVA) ;>98% typical (models above 250kV)CoolingNature air convection for models below 150kVA;Air forces fan for 150kVA and above.ProtectionUnder/Over voltage, over load, over current, short circuit, manual bypass, surge arrester (optional), voltage stabilization before power output;Displayinput voltageof each phase, Output voltageof each phase, Currentofeach phase, Alarm of protectionOperating temperature-15 to 40 ºCHumidity90%Company Profile:Founded in 1983, GridStone Electric is a leading manufacturer of automatic voltage stabilizer and transformer. The products currently include digital static voltage stabilizer, digital servo voltage optimizer, power factor correction units, LV and MV transformers and reactors, UPS, Variable Frequency Power Source, Oil Immersed Induction Voltage Regulator. Thanks to over 30 years in the business and on going technical research, GridStone have become a competitive high-tech company, and meet the requirements of a constantly growing number of customers through design, production and service.Besides standard production, GridStone is flexible and strong at custom design and production according to the customers' specification. Expert training and technical support are available to serve the customers quickly and professionally.GridStone factories are ISO9001 and ISO14001 certified.HOW TO CHOOSE VOLTAGE STABILIZER