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Linear Three Phrase Servo Oil Cooled Stabilizer

Specifications & Features

Capacity30 kVA to 5000 kVA
TechnologyLinear Type On-Load Voltage Regulators with Stepless Regulation (also referred to as Vertical Rolling Contact or Columnar Design)
Control ModuleMicroprocessor-based
Frequency50 / 60 Hz ± 5%
TypeBalanced (Common Control for all three phases. Suited for Balanced input supply & up to 40% Unbalanced load) / Unbalanced (Individual Phase Control. Suited for unbalanced input supply and unbalanced load)
Load VariationAdmitted from 0 to 100%
InstallationIndoor / Outdoor as per site requirement
CoreCRGO Lamination Best Grade
CopperElectrolytic Grade (99.97% Pure)
CoolingNatural Oil-Cooled, ONAN (Available in all models) / Air-Cooled, Natural / Forced (available in select models)
Output Voltage400V ± 1% (Ph – Ph) / 230V ± 1% (Ph – N)
Input Voltage350 – 450V, 340 – 460V, 330 – 470V, 320 – 480V, 300 – 500V *(wide & asymmetrical ranges are manufactured on order)
Efficiency~ 99.5%, > 99%, ~ 99%, ~ 98.5%, > 98%
Duty Cycle / LifeDesigned for 100 % Continuous Duty Cycle & for a life of 18 – 20 years at extreme conditions
Response TimeLess than 10 milliseconds
Correction Rate6 – 15 Volts / second (up to 500 kVA) and 3 – 8 Volts / second (above 500 kVA)
Waveform DistortionVirtually Nil
Ambient Temperature-10 to +45 °C
MountingOn Unidirectional Wheels
TerminationAluminum Bus – Bars provided for Input & Output in a common junction box
Optional FeaturesHigh / Low / Over Load / Single Phase Preventer / Short Circuit / Surge Suppressor / Bypass as on request