Solid state, fast response continuous acting, thyristorised voltage regulator. Ideal choice for LT generator up to 3MW rating used for industries. 

Features available

Dual auto channel for better availability
Independent manual channel.
Complete electronic circuits on single printed circuit board.
Quadrateure droop type compounding feature for stable operation of generator in parallel.
PID control loop.
Minimum adjustment.

AVR type VXB22M/VXB32M

Ideal Choice For LT / HT generator with DC excitation/ brushless excitation.

Features available

Independent auto and manual channels.
Motorized reference for auto and manual control
Compounding for parallel operation of generators
Under excited MVAR Limiter
Rotor current limiter
Over and under excitation monitor
Power factor controller
Follow up for bump less transition between auto and manual control.
Short circuit excitation maintenance feature
Auto over fluxing control
PT fuse failure monitor
Rotating diode failure detection for brushless excitation

Digital AVR type VXB22D/VXB32D

Ideal choice for LT / HT generator with DC excitation/ brushless excitation

Features available

Four operating modes : Voltage Regulation, Field Current Regulation, PF Regulation and VAR Regulation with smooth changeover among the channels
Follow-up to match outputs of active and all the non-active modes for smooth changeover
Compounding for parallel operation of generators
Set-point adjustments for all the modes
Under excitation limiting
Over excitation limiting
Stator current limiting
Auto over-fluxing prevention (V/F Limiter)
Power System Stabilizer (optional)
Generator over-voltage & under-voltage protections
Field over-voltage & over-current protections
Detection of loss of sensing
Soft start voltage build-up
Data communication to DCS system on mod-bus protocol
Local menu driven HMI (Human Machine Interface) & PC controlled parameter adjustment

Digital AVR type VXD32D

Ideal choice for HT generators with brushless excitation

Features available

Four operating modes : Voltage Regulation, Field Current Regulation, PF Regulation and VAR Regulation with smooth changeover among the channels
Follow-up to match outputs of active and all the non-active modes for smooth changeover
Compounding for parallel operation of generators
Set-point adjustments for all the modes
Under excitation limiting
Over excitation limiting
Stator current limiting
Auto over-fluxing prevention (V/F Limiter)
Generator over-voltage & under-voltage protections
Field over-voltage & over-current protections
Detection of loss of sensing
Soft start voltage build-up
Redundant controllers in hot standby mode with auto-tracking between controllers
Data communication to DCS system on mod-bus protocol
Local menu driven HMI (Human Machine Interface) & PC controlled parameter adjustment

Digital SEE type VSD31/VSD32

Ideal choice for LT / HT generator with static excitation.

Digital SEE - VSD31

Features available

Four operating modes : Voltage Regulation, Field Current Regulation, PF Regulation and VAR Regulation With smooth changeover among the channels
Follow-up to match outputs of active and all the non-active modes for smooth changeover
Compounding for parallel operation of generators
Set-point adjustments for all the modes
Under excitation limiting
Over excitation limiting
Stator current limiting
Auto over-fluxing prevention (V/F Limiter)
Power system stabilizer (optional)
Generator over-voltage & under-voltage protections
Field over-voltage & over-current protections
Detection of loss of sensing
Soft start voltage build-up
Data communication to DCS system on mod-bus protocol
Local menu driven HMI (Human Machine Interface) & PC controlled parameter adjustment