Constant Voltage Transformer

About Constant Voltage Transformer

Stability of mains voltage forms the basis for optimum performance of the electronic equipments. The continuously fluctuating mains supply, transients, spikes and surges tend to produce harmful effects thereby creating a hindrance in the smooth functioning of the equipment.

Sen & Pandit Electronics Private Limited Constant Voltage Transformer (CVT) caters to this problem with finesse.

These are based on Ferro-resonance principle and primarily consists of two components i.e. Ferro-resonant transformer and a capacitor. These transformers are designed to deliver constant output voltage with a regulation of out of fluctuating input supply voltage at frequency 50 Hz. The rate of voltage correction for the CVT is instant.

Features

• High reliability
• Instantaneous voltage regulation
• Output isolated from mains for suppression of transients and spikes.
• Higher input voltage control range, for loads less than rated load
• Short term over load capability
• Very high line transient/spike rejection capability and excellent input to output isolation characteristics

Applications

Computers, data processing equipment, colour photography labs., bio-medical equipments, PA equipment, telecommunication, TV, VCD/DVD recorders & players, tele-printers, fax machines and all other sensitive electronic devices requiring precise mains supply.

Technical Specifications:

Input Voltage	130 - 280, 160 - 280
Output Voltage	220+/-1%
Frequency	50Hz+/-1%
Response Time	30 milliseconds
Efficiency	90% (app) under full load condition
Output wave form	Sinusoidal
Wave Form Distortion	less than 4% under full load condition
Load Power Factor	0.75% lag to 0.9% lead
Ambient Temperature	-5 to 50 c
Effect of line frequency	1.5% (app) change in output voltage for every in line frequency

Range Of Models

Model	Power	Input Voltage	Output Voltage
CVT 100	100 VA	160 - 280	220 V 1%
CVT 150	150 VA	160 - 280	220 V 1%
CVT 150E	150 VA	130 - 280	220 V 1%
CVT 250	250 VA	160 - 280	220 V 1%
CVT 500	500 VA	160 - 280	220 V 1%
CVT 500E	500 VA	130 - 280	220 V 1%
CVT 1000	1000 VA	160 - 280	220 V 1%

Superior Voltage Regulation for Sensitive Equipment

This CVT ensures a stable, regulated output voltage of 220V 1%, even when the input fluctuates between 180V and 260V AC. Designed with advanced ferroresonant (magnetic amplifier) circuitry, it eliminates the risk of voltage swings, protecting valuable equipment from malfunction or damage due to inconsistent power supply.


Engineered for Reliability and Longevity

Manufactured with high-grade copper windings, CRGO steel cores, and robust epoxy resin casting, the transformer is built to last more than 10 years with proper maintenance. Silent operation and natural air cooling, paired with compliance to IS 9815, IEC 60076, and CE standards, ensure performance and safety in demanding environments.


Comprehensive Protection and Silent Operation

The CVT includes built-in defenses against short-circuits, overloads, spikes, and surges to safeguard sensitive devices. With noise levels below 50 dB, it operates quietlymaking it suitable for office, laboratory, and hospital settings where low acoustic impact is critical.