+91 9718400491 | +91 8076393163 | info@altravoltpower.com
Mon–Sat 9:30–18:30 IST Support Online

20KVA Servo Voltage Stabilizer

by AltraVolt Power

High‑capacity voltage stabilization for large machinery and critical commercial installations. Built for continuous operation.

Get a Quote View Specs
20KVA Servo Voltage Stabilizer - AltraVolt Power
Heavy Duty

Overview

The AltraVolt Power 20KVA Servo Voltage Stabilizer is a high‑capacity automatic voltage regulation system engineered for heavy‑duty industrial and commercial applications. With a power rating of 20 KVA, it reliably protects large motors, CNC machining centers, medical imaging equipment, data centres, and other mission‑critical loads from damaging voltage fluctuations.

This model features a rugged design with dual cooling fans, heavy‑duty casters, and an advanced servo‑motor driven variac that maintains a stable output of 230V ± 1% even when the input voltage swings between 160V and 280V. Its high efficiency (≥98%) and comprehensive protection suite make it the ideal choice for demanding environments where downtime is not an option.

How It Works

⚙️ Servo Motor Control

A servo motor continuously adjusts a variable autotransformer (variac) to maintain the output voltage at the desired set point. The control circuit monitors the output voltage and compares it with a reference; any deviation triggers the motor to rotate the variac in the appropriate direction, correcting the voltage instantly and smoothly.

📈 Feedback Loop

A precision feedback loop ensures that the correction is accurate and fast. With a response time of less than 40 milliseconds, the stabilizer can handle sudden voltage surges or drops without interrupting the load. This closed‑loop system guarantees a stable output even under fluctuating grid conditions, protecting your equipment from stress and premature failure.

Key Features

⚡

High Efficiency

Up to 98% efficiency reduces energy losses and operating costs.

🛡️

Overload Protection

Built-in MCB and thermal cut-off for complete safety.

📊

Digital Display

Real-time voltage, current, and status monitoring.

🔧

Servo Motor Control

Accurate and fast correction with zero hunting.

🔇

Silent Operation

Noise level below 55 dB, suitable for quiet environments.

🌡️

Wide Temperature Range

Operates reliably from 0°C to 50°C, even in harsh conditions.

Benefits

Applications

🏭 Industrial

  • CNC machines & robotics
  • Plastic injection moulding
  • Printing presses
  • Textile machinery
  • Heavy motors and compressors
  • Elevators & escalators

🏢 Commercial

  • Medical diagnostic equipment (MRI, CT scanners)
  • Laboratory instruments
  • Telecom and data centres
  • Banking & ATMs
  • High‑end audio/video systems
  • Commercial HVAC systems

Technical Specifications

Input Voltage Range160V – 280V (single phase)
Output Voltage230V ± 1%
Frequency50 Hz ± 5%
Power Rating20 KVA
Efficiency> 98%
Regulation Speed< 40 ms
Voltage Correction Rate~ 25 V/sec
Input Power Factor0.8 (lagging)
Dimensions (W x D x H)550 x 380 x 700 mm
Weight68 kg
CoolingForced air with dual fans
MountingFloor standing with heavy‑duty casters
DisplayLCD digital (volts, amps, status)
Enclosure MaterialCRCA steel with powder coating
Operating Temperature0°C to 50°C
Relative HumidityUp to 95% (non‑condensing)
Protection ClassIP20 (standard), IP54 optional
Noise Level< 55 dB
AltitudeUp to 1000 m (derating above)
Over‑voltage Cut‑offYes (adjustable)
Under‑voltage Cut‑offYes (adjustable)
Overload ProtectionMCB + thermal relay
Short Circuit ProtectionMCB
Surge ProtectionMOV varistor
Status IndicationLEDs for mains, output, fault

Compare Models

AltraVolt Power offers a range of servo stabilizers to suit diverse needs. Below is a comparison of key models:

Model Power (KVA) Input Range Output Voltage Efficiency Weight (kg)
ASV-05 5 160-280V 230V ±1% 97% 28
ASV-10 10 160-280V 230V ±1% 98% 42
ASV-15 15 160-280V 230V ±1% 98% 55
ASV-20 (This Model) 20 160-280V 230V ±1% 98% 68

* Custom input/output ranges and higher capacities available on request.

Installation & Maintenance

🛠️ Installation Guidelines

  • Place the stabilizer in a well‑ventilated area, away from direct sunlight and moisture.
  • Ensure the input and output wiring are correctly sized as per the current rating.
  • Connect the earth ground properly to ensure safety.
  • Allow at least 30 cm clearance on all sides for airflow.

🔧 Routine Maintenance

  • Visually inspect for dust accumulation every 6 months.
  • Clean the ventilation grilles and fans with a soft brush or vacuum.
  • Check all electrical connections for tightness.
  • Test the protection features (over/under voltage cut‑off) periodically.

Why AltraVolt Power?

Frequently Asked Questions

What is the difference between a servo stabilizer and a relay stabilizer?

A servo stabilizer uses a motor‑driven variac for stepless voltage correction, providing precise output (within ±1%) and fast response. Relay stabilizers use step‑changes via transformers, resulting in slower correction and larger output tolerances (±5‑10%).

Can this stabilizer be used for three‑phase equipment?

The 20KVA model is single‑phase. However, we offer three‑phase servo stabilizers up to 500KVA. Please contact us for your specific three‑phase requirements.

Is the stabilizer suitable for sensitive medical equipment?

Yes. With its high precision, low noise, and optional isolation transformer, it is ideal for medical imaging, diagnostic devices, and laboratory instruments.

What is the typical lifespan of this stabilizer?

With proper maintenance, the servo stabilizer can last over 15 years. The brushless servo motor and robust components ensure long‑term reliability.

Do you provide installation support?

Yes, we offer on‑site installation and commissioning services across India. Our engineers will ensure the system is set up correctly for your application.

Get in Touch

Speak directly with our experts or send us a message on WhatsApp.

📞 +91 8076393163 (Available 9 AM – 6 PM, Mon–Sat)
📞 Call Now 💬 WhatsApp