The technology consists of rolling contact buck-boost type linear voltage regulator. Unlike torridal variacs to minimize losses and improve efficiency the linear transformer is made of heavy section of copper stripes.

Instead of carbon brush as used in conventional servo here maintenance free carbon roller assembly is used for high reliability. The digital control circuits monitor and control the output voltage electronically.

The double wound buck-boost series transformer is also made from special CRGO lamination for higher efficiency.

The technology consists of rolling contact buck-boost type linear voltage regulator. Unlike torridal variacs to minimize losses and improve efficiency the linear transformer is made of heavy section of copper stripes. Instead of carbon brush as used in conventional servo here maintenance free carbon roller assembly is used for high reliability. The digital control circuits monitor and control the output voltage electronically. The double wound buck-boost series transformer is also made from special CRGO lamination for higher efficiency.

Instant Response & Fast Corrections:

Variable speed servo motor and proportional control circuit provide a response time of 10msec. to correct voltage fluctuations without noise or oscillations in output.

Lower Running Cost:

Due to high operating efficiency of better than 98% as compared to 95% from other brands. Fig. B indicates savings at different KVA ratings, with our equipments.

Digital Metering System:

Data logger with LCD/LED display screen provides detailed information about various electrical parameters to help monitor power quality (optional)

Universal Fit:

Designed to work on unbalanced line and load conditions when each phase is individually controlled with separate variable speed motors and electronic controls.

D.G. Compatibility:

Special RMS sensing circuit eliminates drift in output voltage, current, frequency even with distorted waveform to avoid unnecessary tripping.

Quality Components:

Components conforming to CE/IS/BS/VDU standards are used and thoroughly tested as per relevant standards.

Fast Payback:

Reduced power loss and resultant lower running cost yield higher cost savings and help the customer recover the cost difference in few months.

Input

 
Voltage Range 340-480/415 vac 3ø, ±20%
Frequency range 50Hz, ± 5% Hz
Phase Three phase + neutral + GND

Output

 
Voltage Range 380/400/415 vac, 3ø ±1.5%  (adjustable voltage by preset)
Frequency Range Synchronized with the supply frequency (line mode), 50Hz, ±5% Hz
Power Factor > 0.95
Waveform Sinusoidal pure sine wave/no distortion
Phase Three phase + neutral + GND
Overload capacity 120% - 60s, 200% - 10 s
Display Digital/Analogue I/P & O/P volt meter
Protection Over voltage 253 vac (L-N), Output shutoff after 4-7s delay
Low voltage 176 vac (L-N), Output shutoff after 4-7s delay
Automatic circuit breaker rated at 130%, Overload capability for heavy start load.
Control ON/OFF-Normal circuit breaker switch, Output voltage selector switch, Power start button, Power stop button
Response time < 35 ms/volt.
Insulation Resistance D.C. 1000V ≥ 2M Ω
Features Compensator & auto self starting after power failure
Electrical Strength 2000 V power frequency for 60 seconds without breakdown & flash over
Efficiency > 98%
Ambient Temperature -20° C to + 50° C
Relative Humidity < 90% (no condensation)
Audible noise 45dB – 55dB at 1 meter
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