Purevolt Products (P) LimitedPurevolt Products (P) Limited

Power Conditioning Equipment

We manufacture a wide range power conditioning equipment which are indigenously and precisely engineered to provide best performance. Our products widely used in various industries, institutions and for domestic purposes as well. Our products are renowned for unmatched quality, advanced technology and world class design at customer driven prices. Our range of products includes :


Voltage Stabilizer
Voltage Stabilizer


We manufacture precisely engineered three phase servo voltage stablizer which essentially has a solid state circuit to control the servo motor. The motor is mechanically attached to the arm of a continuously variable auto transformer which feeds to the primary of a series control buckboost transformer. The stablizer output voltage is compared with the reference voltage and the resultant error signal controls the Servo Motor providing true proportional control systems rather than on/ off circuits. » Rating: 1KVA to 1000 KVA Technical Specifications of Three Phase Servo Stabilizer:
CHARACTERISTICS THREE PHASE
Input Voltage 300-460V, Output400V ± 1.0%
Frequency 47 - 53 Hz
Wave from Distortion None
Speed of Correction 20 V / Sec.
Regulation ± 1.0% from No Load to full load.
Ambient Temperature 0° to 55° C
Salient Features: » Fully Solid State Control Circuit » - 1.0 % Regulations » No wave form Distortion » High Efficiency » Auto - Manual Operation Facility » Over - Under Voltage Protection Optional Features: » Extended Input Range- 140-280/ 110-280/ 90-280 V is also available. » Special Input/Output ranges.



Servo Voltage Stablizer
Servo Voltage Stablizer


We manufacture precisely engineered single phase servo voltage stablizer which essentially has a solid state circuit to control the servo motor. The motor is mechanically attached to the arm of a continuously variable auto transformer which feeds to the primary of a series control buckboost transformer. The stablizer output voltage is compared with the reference voltage and the resultant error signal controls the Servo Motor providing true proportional control systems rather than on / off circuits. Technical Specifications of Single Phase Servo Stabilizer:
CHARACTERISTICS SINGLE PHASE
Input Voltage 170-270V Output is 230V± 1.0% Regulation (Adjustable Between 210-240 V)
Frequency 47 - 53 Hz
Wave from Distortion None
Speed of Correction 20 V / Sec.
Regulation ± 1.0% from No Load to full load.
Ambient Temperature 0° to 55° C
Salient Features: » Fully Solid State Control Circuit » - 1.0 % Regulations » No wave form Distortion » High Efficiency » Auto - Manual Operation Facility » Over - Under Voltage Protection Optional Features: » Extended Input Range- 140-280/ 110-280/ 90-280 V is also available. » Special Input/Output ranges.



Automatic Voltage Stabilizer
Automatic Voltage Stabilizer


We offer precisely engineered Voltage stabilizers which are used for air conditioners.

* Rating: 3KVA, 4KVA, 5KVA

Salient Features:
» Digital IC Controlled Circuit
» German technology based low loss toroidal transformer to reduce no-load losses and make it the most economical stabiliser in its class.
» Its interturn insulation can withstand five times the normal voltage and frequency.
» High & Low Voltage cut-off for Compressor protection.
» Easy to Install, operate, maintain & service.
» Intelligent time delay system between shut down & restarts ensures safety to compressor.
» Elegant, sleek, attractive & compact design to match any decor.
» Tested to IS 8448 : 1994
» High/Low Cut-Off.
» Time Delay Relay (TDR) Circuit.
» MCB


Technical Specifications
Working VoltageInput:145-290 V 120-270 V
Output:195-245V 195-245 V
Mains Frequency50Hz /-5%
Cut-Off Voltage (Output)High-252 /-2V;Low-192 /-2V
Time Delay3 minutes between shut down & Subsequent Starts
10 KVA to 50 KVA240V/360V
5 KVA to 7.5 KVA 120V/240V/360V
Indications-Output3 Digit 7 Segment LED Display
Time DelayRed Blinking LED
Cut-OffNo Output Voltage on DPM
Input Cable2 Metre (3 Core)
Output TerminationTerminal Block of 30 Amp.
Models3 KVA/ 4KVA / 5KVA
AccessoriesTwo Plugs with screws & Clamp Plate for wall mounting
Dimensions (mm)L x W x H (112 x 315 x 258)



Constant Voltage Transformer
Constant Voltage Transformer


We offer world class CVT in which the AC mains powers the input winding, which in turn is widely separated physically from the isolated output winding. Very moderate flux linkage levels are maintained in input winding running. The output winding has an intrinsic energy storage characteristic. This energy storage operates in conjunction with mains capacitor to produce self-generated AC flux field with is indirectly excited from the input winding.

* Rating: 75VA to 10.0KVA

Salient Features
» No use of any semiconductor or moving part offering very high reliability.
» No use of feed back control.
» Limiting of Intense current and protection short ciruit
» Energy storage for line lose up to main 3ms at typical load.
» Short term over load capacity.
» Higher input voltage control range for load less than rated low.

TECHNICAL SPECIFICATIONS
Input Voltage 180 v- 260v
Line Frequency 50 Hz
Output Voltage220-230± 1%
Output Step Load Response 2 cycles (30 to 40 milliseconds)
Efficiency90% (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
Ambient 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



Ultra Isolation Transformers
Ultra Isolation Transformers


Isolation transformer is one that contains two windings: Primary and Secondary winding, that are separated from each other but wound on the same Iron core. The secondary that governs the output is, in this manner, separated from the input. Input and output are totally independent of each other except for the magnetic linkage between the two.

Salient Features
» Isolates the equipment from noisy powerline
» Reduces powerline noise, surges, spikes & transients
» High insulation resistance
» Provides the complete electromagnetic & electro static shielding

Technical Specifications of Ultra Isolation Transformer
Ratio1 : 1
Load regulationwithin 4 %
DC isolationOver 1000 mega ohms between any winding or Windings to ground.
Inter-winding Capacitance0.005 PF Maximum
Common Mode Noise Rejection over 120 Db
Break down strength2.5 KV
Acceptable Line Frequency47 - 63 Hz
Efficiencygreater than 95 %



Auto Transformer (Variacs)
Auto Transformer (Variacs)



We present high strength variable auto transformer which is highly useful and effective device for step less, break less and have continuous control of A.C voltage. Hence it controls various other parameters which are dependent on A.C voltage. Our transformers suitable for controlling device for numerous applications in laboratories and in industrial & commercial fields.

* Rating:- 4AMP to 200AMP

Salient Features
» Simple & rugged in construction
» Good Regulation- Voltage drop on load is low
» Output voltage variation on no-load and even on load is effortless, smooth, continuous, break less and linearly proportional to angular rotation.
» High Efficiency- No load losses and load losses are low.
» Negligible waveform and power factor distortion due to simple transformer action.
» Excellent short time overload capacity
» Easy for remote operation with the help of motor drive.
» Wide range of models.
» Rating:- 4AMP to 200AMP

TECHNICAL SPECIFICATIONS
» Rated for 240V A.C. 50/60Hz. single phase supply and three phase model for 415V A.C. 50/60Hz three phase 4 wire supply.
» The output voltage can be varied smoothly over two ranges
» Zero to full supply voltage
» Zero to approx. 12% higher than the supply voltage
» Suitable for indoor use in a maximum ambient temperature of 45 degree C



DC-to-AC Inverter
DC-to-AC Inverter


We manufacture high performance power inverter which are 3-function DC-to-AC inverters having auto AC-to-battery transfer. They possess integrated charging system which serves as an extended run stand-alone power source. Our inverters can also be used as household or industrial inverter.

Our Inverters are designed by micro-controller. These micro controllers control the charging and generate PWM at inverter mode.

* Rating:- 500VA TO 2000 VA and 500VA TO 3000 VA

Sailent Features
» Acts as an long lasting standalone power source for domestic and industrial appliances.
» There is an attached high and low voltage cut-off for the safety of appliances through the inverter and automatic inverter support for blackouts and brownouts.
» Run time of battery depends upon the size of the connected battery.
» Can convert 12 volt DC to 220 volt AC.
» Automatically Controled PWM based pulse charging.
» LED indications for Mains On, Inverter On, Overload, Low Battery, Battery Charging, Fuse Blown and Short-Circuit.
» Automatic boost & trickle Charging.
» Protection from battery deep discharge.
» Prompt change over time.
» Wide Input Range

TECHNICAL SPECIFICATIONS
Input Voltage 150V to 280V
Input Frequency 45 Hz to 55 Hz
Output Voltage 230V ± 5%
Output Frequency 50Hz ± 5%
Waveform Single Pulse PWM
Load power factor 0.8
Battery typeLead acid
Battery charging times 5-10 hrs.
Protection against Over load, Short circuit, battery low



Online UPS Systems
Online UPS Systems


Models available from 1 KVA to 200 KVA Salient Features: » Compute grade power » Float cum boost charger » IGBT Based Hi-Frequency PWM design » Inverter efficiency 92% » Distortion less than 3% » Crystal controlled output frequency 50 ± 0.01% » Low Noise <50db up to 10 KVA Technical Specifications
AC INPUT VOLTAGE 230V-35% 20% single Phase or 415 ± 40% Three Phase (or any voltage as per requirement)
Frequency 50Hz ± 10% (can also work on generators)
UPS capacity DC Operating Voltage
50 KVA & above 360V/432V
10 KVA to 50 KVA 240V/360V
5 KVA to 7.5 KVA 120V/240V/360V
Below 5 KVA 48V/120V/144V/180V/240V
Output Voltage 230V AC single Phase or 415V AC three Phase
Adjustable Range ± 20V AC
Voltage Stability ± 1% for DC input variation & Output load variations
Frequency 50Hz ± 0.05Hz or 60Hz ± 0.06
Wave form Sine Wave
Harmonic Distortion Less than 3%
Efficiency 93% for 360V DC & above;90% for 240V/120V;85% for 48V DC
Power Factor 0.8 lagging to unity
Overload 110% for 10 minutes 200% for 5 cycles
Transient recovery within 2 cycles
Phase displacement 120 ± 1 for 3 Phase output
Audible Noise 55db at 1 mtr up to 10 KVA
60db at 1 mtr above 10 KVA



Offline UPS Systems
Offline UPS Systems


We manufacture high back up Off line interactive UPS which plays a dual role of charging the batteries when mains supply is present and also regulates the output voltage and can work as a normal inverter in the absence of mains supply. It provides upgraded power protection by offering additional line conditioning. It offers optimum protection for loads and batteries. It continually suppresses, filters, stabilizes, regulates and electronically regenerates all the power disturbances. It can also protect the corruption of valuable data, interruption in web access, component failure, errors and shutdown of computers, drive & system crashes or any other damage due to power problems.

Salient Featuress

» Microprocessor based design.
» Change over with phase synchronization.
» Protection for overload & short circuit.
» The line surge protection for modems.
» Cold Start at battery mode. Typical Applications
» Application - Personal Computers, Modem, Fax Machines, Controllers, Security, Telecommunication.
» UV/OV Cut-Off protection
» Protection of Battery against low voltage
» Buzzer on low Battery.
» Compact Sleek Design.
» Float cum Boost Charger.
» Rating:- 500VA to 2000VA







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