MRG/MST33 Series STATIC VOLTAGE REGULATOR 200-300-400-500kVA
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2.1 General Information
General operation topology of MRG/MST33 Series can be recognized as follows:
MRG/MST33 Series Static Voltage Regulator Functional Diagram
MRG/MST33 Series Static Voltage Regulator (SVR) transfers the electrical energy from the main
supply to output and monitors output voltage magnitude continuously.
If there is a distortion in the output voltage according to a desired output voltage value, the
microcontroller unit selects the appropriate input-output windings of the transformer
immediately and then semiconductor power switches (thyristors) and ends of the windings
connect the SVR input-output for stay in appropriate values.
Thus Static Voltage Regulator (SVR), the voltage magnitude of the corresponding additional
energy generated by the electrical energy received from the network, by adding to its network
voltage amplitude (or removing) obtains an output voltage magnitude between set points
2.2 Regulators Operation Modes
MRG/MST33 series operated in the following modes:
Normal Mode
Mechanical Bypass Mode
2.2.1 Normal Mode
In this mode, regulator feeds the load through the regulated voltage.
2.2.2 Mechanical Bypass Mode
Operator sets main position to Main/Regulator breaker for operating mechanical bypass mode.
In this mode; the maintenance bypass load is directly or mains power for the loss of energy of
the load during faults
