The ferroresonant transformers, which are also known as Constant Voltage Transformers (CVTs) or ferros, are also good surge suppressors, as they provide high isolation and inherent short-circuit protection.
CVT Manufacturer Purevolt is supplier of CVT from 150 VA to 10 KVA with load test conducted at 0.8 or Unity Power Factor as per customer requirement for all CVT ratings. For CVT configurations other than those mentioned above, please contact our office.
Purevolt is manufacturer of CVT or Constant Voltage Transformers, which use a tank circuit composed of a high-voltage resonant winding and a capacitor to produce a nearly constant average output with a varying input. The ferroresonant transformer approach is attractive due to its lack of active components, relying on the square loop saturation characteristics of the tank circuit to absorb variations in average input voltage.
General Technical Specifications of our Ferro Resonant Transformer (CVT)
| Input Voltage | 180 V – 260 V AC |
| Line Frequency | 50 Hz |
| Output Voltage | 220 – 230 V ± 1% |
| Output Step Load Response | 2 cycles (30 to 40 milliseconds) |
| Efficiency | 90% (approx) under full load conditions |
| Output Wave Form | Sinewave |
| Wave from Distortion | 5% (approx) under full load conditions |
| Load power Factor | 0.75% lag to 0.9% lead |
| mbient Temperature | -10°C to 50°C |
| Transformer Type | Ferro-Resonant |
| Effect of Frequency | 1.6 (approx) change in output voltage for every 1% change in line frequency |
Salient Features for CVT :
- No Semiconductor or moving part used, hence very high reliability.
- No feed back control used.
- Intrinsic current limiting and short circuit protection.
- Energy storage for line loss up to main 3ms at typical load.
- Short term over load capacity.
- Higher input voltage control range for load less than rated low.
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Products Offered :
Industrial Servo Voltage Stabilizers SVS, Automatic Voltage Regulators / Stabilizers, IGBT based Online UPS (Single/Three Phase), Sine Wave Online Ups (Single / Three Phase), Automatic and Manual Voltage Stabilizers/Regulators, Constant Voltage Transformers – CVT, Ferro Resonant Transformers, Isolation Transformers, Auto Transformers, Step Up Down Transformers, Line Interactive – Offline UPS, Ups with External Battery, Power Inverters, DC – AC Converters, Telecom Transformers, Sine Wave Inverters, Solar Products, Dimmerstat / Variable Test Panel, Variable Auto Transformers (Variacs)