Servo Control Voltage Stabilizer ( Air Cooled )

No Potentiometer Adjustments — Full Digital Control

• All parameters are modified using the front-panel keypad rather than manual potentiometer trimming, reducing setup error and drift over time.
• Input voltage band, output voltage, and output voltage sensitivity are all independently configurable.

Comprehensive Protection Set

• Electronic over- and under-voltage trip with time delay, applied to both input and output.
• Electronic overload and short-circuit protection up to 30 KVA through the built-in MCB with manual bypass; above 30 KVA, MCB/MCCB protection is available as an option.
• Phase reversal protection and cut-off.
• Single-phase prevention and cut-off.
• Neutral failure protection.
• Frequency cut-off protection.
• Earth neutral voltage cut-off protection.

Configurable Correction and Reset Behavior

• Correction speed adjustable from 16.6 to 70 V/sec (conditions apply).
• Manual or automatic reset, with programmable time delay.
• Manual and automatic start facility, plus independent output start/stop control.
• Trip time delay adjustments with variable setting.

Metering and Status Visibility

• Digital metering (Class 1 accuracy, full scale ±1) covering input phase-to-neutral, input phase-to-phase, output phase-to-neutral, output phase-to-phase, load current across all phases, and frequency.
• Non-latching LED annunciation panel with dual-colour indication for overload latching conditions.
• Audio alarm for tripping conditions.
• LED display standard; LCD display available as an option.

Built for Indoor Industrial Duty

• Operating temperature range: 0°C to 45°C.
• Degree of protection: IP20.
• Cabinet finished in Dark Grey RAL 7016, designed for indoor, floor-mount installation.
• Input and output terminations include provisions for fixing cable glands.
• Conforms to IS 9815, the Indian standard for AC automatic voltage stabilizers.

Applications

• Sensitive electronic and industrial equipment – protects machinery, control panels, and process equipment from voltage fluctuations, sags, and surges on unstable grid supply.
• Facilities with wide input voltage swings – three selectable input voltage range bands (295–465V, 340–480V, 360–460V) accommodate different grid stability conditions, and ranges can be customised to specific site requirements.
• Installations needing overload and fault protection built in – integrated electronic protections (over/under-voltage, overload, short-circuit, phase reversal, single-phasing, neutral failure) reduce the need for separate protection relays at smaller capacities.
• Facilities scaling from small to large loads – a single product line from 3 KVA up to 250 KVA covers small equipment protection through larger facility-level stabilization needs.