Ferro Resonant Transformer ,Constant Voltage Transformer,
Ferroresonant Transformer
Purevolt’s Constant Voltage Transformer (CVT) is designed to provide complete protection against power-related problems. The CVT effectively regulates voltage variations, suppresses transients through electrical isolation, and bridges short power interruptions and voltage dips. Purevolt also exports these Constant Voltage Transformers to various countries worldwide.
Advantages of Ferroresonant Transformer (CVT)
Voltage Variations / Fluctuations and Principle of Operation
The key phenomenon that makes a CVT unique is ferroresonance. This is achieved by resonating the output secondary winding with carefully selected, high-stability capacitors. The resonant circuit is precisely designed so that the secondary portion of the transformer core operates independently during each half cycle.
As a result, the output voltage remains nearly constant even when there are wide variations in the input voltage. By design, Purevolt’s CVT delivers a pure sinusoidal output waveform. Owing to this operating principle, all issues related to voltage variations and fluctuations are effectively managed, ensuring a stable output voltage within ±1% accuracy.
Transients / Noise (Spikes)
In Purevolt’s ferroresonant Constant Voltage Transformer (CVT), the primary and secondary windings are separated by a large air gap and a magnetic shunt. This design significantly reduces the combined inductance and capacitance, providing effective protection against asymmetric voltage transients.
There is also a controlled phase difference between the input and output voltages in the Purevolt CVT. This phase shift varies with load magnitude and changes in line voltage, which further helps in suppressing electrical noise.
The physical and electrical isolation between the primary and secondary windings effectively strips away the high-frequency components of normal-mode noise. Additionally, the neutral-to-ground bonding on the secondary side creates a short-circuit path for common-mode noise, ensuring superior noise attenuation.
Short Interruptions & Voltage Dips
The output of the CVT is derived from the saturated secondary section of the transformer, which maintains an inherent energy reserve of approximately 5–10 milliseconds at full load. This stored energy enables the CVT to bridge short-duration power interruptions and deep voltage dips.
During brief power breaks—commonly caused by phase compensation, or the switching ON/OFF of heavy electrical equipment—the Purevolt CVT continues to supply power from its internal energy reserve, ensuring uninterrupted and stable output to connected equipment.
Customer Service & Quality
Our products are all made in India
As part of our engineering and manufacturing services, we help our customers customize scheduling, packaging, shipping, billing, and communication processes to meet their specific inventory management, product handling, and delivery requirements. We are committed to delivering a level of quality and service that enables our customers to become leaders in their respective markets. We take pride in being the only transformer company our customers need. Driven by a spirit of unity, selflessness, and single-minded focus, we provide customer service that truly stands out.
Countries Where
We are Regularly Exporting
- 🇮🇳 Gurgaon
- 🇿🇦 South Africa
- 🇲🇼 Malawi
- 🇲🇿 Mozambique
- 🇲🇬 Madagascar
- 🇳🇬 Nigeria
- 🇿🇼 Zimbabwe
- 🇰🇪 Kenya
- 🇬🇭 Ghana
- 🇹🇿 Tanzania
- 🇺🇬 Uganda
Our Happy Customers
We were looking for some high quality and reliable DC to AC inverter for commercial use for our appliances. My verdict is that the products were of excellent quality and support from the Purvolt was professional. Product pricing was also reasonable. Highly recommended. Kudos to the team.
– Ankita, Faridabad, India
I am one of the oldest clients of Purevolt India and what i like about is communication and product quality as promised over the call. I couldn't thank more to the Sumit for meeting our expectations. The quality of the product was satisfactory, it met our requirements, and it was delivered on time, as promised by the team.
Our factory required some DC to AV inverter. I must say that the product quality was beyond our expectations. I couldn't thank more to the Purevolt Team for delivering high quality product. Communication with team was also smooth. The team has done an excellent job managing delivering process.