Powering India since 1980 +91 8882730630 info@voltapexpower.com

Uninterrupted Power Stability

VoltApex Constant Voltage Transformers (CVTs) deliver rock-solid voltage regulation for your critical equipment, using advanced ferroresonant technology to protect against brownouts, spikes, and fluctuations.

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Power Quality Matters

In today's technology-driven world, voltage fluctuations can seriously impact the performance and lifespan of critical equipment. Standard voltage regulators often fall short when real protection is needed.

VoltApex Constant Voltage Transformers use advanced ferroresonant technology to provide true isolation and precise voltage regulation under the most challenging power conditions.

Industry Trusted

With over 5,000 installations across healthcare, industrial, and commercial sectors.

VoltApex CVT Installation

Key Features

Advanced technology for superior performance and protection

Precision Regulation

Maintains output voltage within ±1% of nominal value regardless of input variations from 170V to 270V, ensuring your equipment always receives clean, stable power.

Built-in Protection

Integrated safeguards against voltage spikes, surges, and electrical noise with high-speed response that continuously monitors and corrects power quality issues.

Instant Response

Reacts to voltage fluctuations in less than 1 cycle (16ms) for immediate protection of sensitive loads, preventing data corruption or equipment damage.

True Isolation

4000V AC isolation between primary and secondary circuits creates a complete electrical barrier that blocks transients and common-mode noise.

Long Lifespan

Engineered with military-grade components for exceptional durability with MTBF ratings exceeding 100,000 hours of continuous operation.

Energy Efficient

Advanced core materials and precision winding techniques deliver industry-leading efficiency ratings of up to 98%, reducing operating costs.

Why Choose VoltApex CVTs

The superior solution for power quality challenges

Zero Transfer Time

Instantaneous response with no switching delay

Noise Filtration

Eliminates up to 90% of line noise

No Moving Parts

Maintenance-free operation

Overload Capacity

200% surge capability for 10 seconds

5-Year Warranty

Industry-leading protection

Advanced Ferroresonant Technology

Our CVTs utilize the unique properties of Ferroresonance to achieve voltage stabilization. This electromagnetic phenomenon combines a saturable transformer with a resonant capacitor to create a self-regulating system that maintains constant output voltage despite wide input variations.

How It Works:

  1. Input voltage enters the primary winding of the saturable transformer, creating a magnetic field in the core.
  2. Secondary winding connects to a precisely calculated resonant capacitor, creating an LC tank circuit that resonates at line frequency.
  3. When input voltage fluctuates, the core's magnetic saturation properties automatically compensate, maintaining stable output.
  4. This ferroresonant action creates a natural "magnetic regulator" effect that keeps output voltage constant despite input fluctuations.
  5. Advanced filtering circuit removes harmonic distortion, delivering clean, stable power to your equipment.
  6. The entire process occurs within the magnetic circuit with no electronic controls, providing exceptional reliability.
CVT Technology Diagram

Fig 1. VoltApex Ferroresonant Core Technology

Technical Comparison: CVT vs. Other Voltage Regulators

Feature VoltApex CVT Electronic Regulator Servo Stabilizer
Response Time Instant (0ms) 1-2 cycles 50-100ms
Voltage Accuracy ±1% ±3-5% ±5-10%
Waveform Distortion <3% THD 5-10% THD 5-15% THD
Surge Protection Built-in Requires external Requires external
Maintenance None Periodic Frequent
Lifespan 20+ years 5-10 years 7-12 years

Technical Specifications

Engineered for performance and reliability

Parameter Specification
Input Voltage Range 170V - 270V AC (Wider ranges available)
Output Voltage 230V ±1% (Custom voltages available)
Frequency 50Hz ±5% (60Hz models available)
Power Rating 500VA to 100KVA (Standard range)
Regulation Accuracy ±1% of nominal output voltage
Response Time < 1 cycle (16ms)
Efficiency 92% - 98% (depending on model)
Waveform Distortion < 5% THD (Typical)
Operating Temperature 0°C to 45°C (Derating above 40°C)
Cooling Method Natural convection (Forced cooling optional)
Protection Features Overload, Short Circuit, Over Temperature
Isolation Voltage 4000V AC (Primary to Secondary)
Noise Attenuation 40dB (Common mode), 30dB (Normal mode)
Surge Withstand 6kV, 3kA (8/20μs waveform)
Audible Noise < 45dB at 1m (Standard models)

Standard Features

  • Rugged steel enclosure with powder coating (IP20 standard)
  • Input/output terminal blocks for easy connection
  • Visual voltage indicators (analog meters)
  • Overload protection circuit with automatic reset
  • Vibration-resistant construction
  • 5-year warranty on core components
  • CE compliant design
  • RoHS compliant materials
  • Natural convection cooling
  • Wall-mount or floor-standing options

Optional Features

  • Digital voltage/current meters with logging
  • Remote monitoring interface (RS485/Modbus)
  • Forced air cooling system
  • Custom input/output voltages
  • Special enclosures (NEMA, IP ratings)
  • Dual input voltage ranges
  • Output circuit breakers
  • Bypass switchgear
  • High-temperature operation
  • Custom colors and branding

Applications

Where precision voltage matters most

Medical Equipment

Critical for MRI machines, CT scanners, X-ray systems, and laboratory analyzers where voltage fluctuations can affect diagnostic accuracy and equipment longevity. Our CVTs are used in over 200 healthcare facilities nationwide.

Data Centers

Protects servers, storage systems, and network equipment from power anomalies that can cause data corruption or hardware failure. Recommended for Tier III and Tier IV data center installations.

Industrial Automation

Ensures consistent operation of PLCs, CNC machines, robotic systems, and process control equipment in manufacturing plants, preventing costly production downtime and quality issues.

Research Facilities

Essential for electron microscopes, spectrometers, and other sensitive scientific instruments requiring stable power. Used in national laboratories and university research centers.

Broadcast Equipment

Maintains signal integrity for TV/radio transmitters, studio gear, and production equipment. Eliminates visual artifacts and audio distortion caused by power fluctuations.

Semiconductor Manufacturing

Critical for wafer fabrication equipment where even minor voltage variations can ruin production batches costing thousands of dollars.

Customer Testimonials

What our clients say about our CVT solutions

"We installed VoltApex CVTs across our hospital's diagnostic imaging center and immediately saw a 30% reduction in equipment service calls. The stability has been remarkable."

Dr. Rajesh Verma

Chief Medical Officer, Apollo Hospitals

"After struggling with voltage fluctuations damaging our CNC machines, we switched to VoltApex. Five years later, zero downtime and perfect voltage regulation."

Sanjay Mehta

Plant Manager, Bharat Auto Components

"Our data center's uptime improved to 99.99% after deploying VoltApex CVTs. The technical support during installation was exceptional."

Priya Khanna

CTO, NexGen Data Solutions

Frequently Asked Questions

Common questions about Constant Voltage Transformers

Constant Voltage Transformers use ferroresonant technology which provides several key advantages over conventional stabilizers:

  • Instantaneous response with no switching delay
  • True galvanic isolation between input and output
  • Built-in surge and noise protection
  • No moving parts or electronic components that can fail
  • Maintains regulation during complete power dropouts for short durations
  • Much higher reliability and longer lifespan

While electronic stabilizers use tap-changing or buck-boost methods, CVTs regulate voltage through magnetic saturation principles, making them ideal for critical applications.

VoltApex CVTs are designed for completely maintenance-free operation. Unlike servo stabilizers that require regular brush replacement or electronic stabilizers that need capacitor replacements, our CVTs have:

  • No moving parts to wear out
  • No brushes or contacts that degrade
  • No electronic components that age
  • Sealed magnetic assemblies that last decades

We recommend only periodic visual inspections and keeping the unit free from excessive dust. In industrial environments, checking terminal tightness annually is advised. Our units typically operate for 20+ years without any service requirements.

Yes, VoltApex CVTs are particularly well-suited for generator applications because:

  • They tolerate the frequency variations common with generators
  • Filter out voltage spikes and harmonics from generator output
  • Provide stable voltage despite generator load changes
  • Protect equipment from generator start-up transients

We offer special CVT models optimized for generator use with wider input voltage ranges and enhanced filtering. These are commonly used in:

  • Hospital backup power systems
  • Remote telecom installations
  • Industrial plants with generator backup
  • Construction site power

VoltApex CVTs are designed for exceptional longevity:

  • Core components: 25+ years (transformers, capacitors)
  • Complete unit: 20+ years typical service life
  • MTBF: >100,000 hours (11.4 years) continuous operation

Factors affecting lifespan:

  • Operating temperature: For every 10°C above 40°C, lifespan decreases by about 50%
  • Load cycling: Units operated continuously last longer than those frequently powered on/off
  • Environment: Harsh industrial environments may reduce lifespan slightly

We have CVTs in service that have been operating continuously since the 1990s with no degradation in performance.

Yes, CVTs and UPS systems complement each other well in many applications:

Recommended configurations:

  1. CVT before UPS: Protects UPS from input voltage variations, extending battery life
  2. CVT after UPS: Provides additional voltage stabilization and noise filtering
  3. CVT for non-critical loads: Use UPS for most critical equipment and CVT for less critical loads

Benefits of combining CVT with UPS:

  • Reduces UPS battery usage during brownouts
  • Filters noise that might confuse UPS sensing circuits
  • Provides additional protection against surges
  • Extends overall system reliability

For large installations, we can provide integrated CVT-UPS solutions with optimized coordination between the systems.

Ready to Solve Your Power Quality Challenges?

Our team of power quality experts can help you select the perfect CVT solution for your specific requirements. Get a free consultation today.

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Contact Information

Our Location

KHAS-615, HALDAUNI
Greater Noida, Gautam Budh Nagar 201306

Call Us

+91 8882730630

Business Hours

Monday - Friday: 9:00 AM - 6:00 PM
Saturday: 10:00 AM - 4:00 PM