SBW AC Automatic Voltage Regulator

 SBW  AC Automatic Voltage Regulator

Principle & Characteristics
This product is designed and developed with the international advanced compensation technology. It can keep the output voltage in steady state automatically when the network voltage fluctuated or the load current varied, which can ensure the consumer run smoothly. It has the advantage of large capacity, high efficiency, no waveform distortion, simple operation and maintenance, reliable running, full- capacity output under tower input voltage if compared with other voltage stabilizer. It is provided with over-voltage, over-current, phase sequence and so on protection function.

Scope of Application
It is suitable for electric supply in small-sized plant, workshop and department in middle, large-sized mining enterprise, it can be widely used in the precision machine tool, precision instrument, test device, elevator, imported electromechanical device, production flow-line in the mining enterprise, oil field, railway, building site, school, hospital, hotel, scientific research department and so on, it is also suitable for the user in the LV electric network end with low power voltage and big wave range

A. Input voltage: Three-phase: Three-phase four-wire phase voltage 220± 20%, wire voltage 380V± 20% or phase
Voltage 220± 30%, wire voltage 380V ± 30%, they can be selected ( please indicate when placing an order)
Single phase: 220V± 20% or 220V± 30%, it can be selected ( please indicate when placing an order)
B. Output voltage:
Three-phase: Three-phase four-wire phase voltage 220V, wire voltage 380V
Single-phase: 220V
C. Accuracy of output voltage: 2-5% (adjustable)
D. Efficiency: ≥ 95% ( power class: More than 50KVA)
E. Response speed: ≤ 1.5S (when outside voltage has 10% of change)
F. Waveform distortion: No additive waveform distortion
G. Protection: Protection against over voltage, over current, phase failure and machine fault, as well as phase
Sequence protection (single-phase and three-phase 150KVA below has no phase failure and is provided with
Phase sequence protection).
H. Voltage stabilization, convenient switching for commercial power (single phase has no function)
I. Start automatically or by hand (can be chosen) when power is on.
J. Can work continuously for a long time without anybody attending.
K. Insulation resistance: ≥ 2MΩ
L. Electric strength: Bear power frequency sine voltage 2, 000V for 1 min without breakdown or flash over.
M. Overload capability: 2 times rated current, keeping 1 min (voltage stabilizer special for elevator and CT) 


Product Description
SBW series is developed upon SBW series, it is suitble for power grid with unstable three-phase voltage, when power grid or current of load fluctuates, the three-phase output could be balanced automatically and keep stable.


1). Feature:
This series large power voltage stabilizer is an energy-saving new product developed by our company by absorbing the advanced technology of Western Europe. It is provided with two systems of manual or automatic dual control, direct output and stabilizing output with the functions of over/under-voltage protection, delay and error protection etc., it is reliable and suitable for any load.

2).Application:
It is widely used in the place with large electricity demands such as factories, post & communication, schools, hotel etc., acted as whole voltage-stabilizating  or single voltage-stabilizing.

3).Specification:
Phase No.: Three phase four system, three phase controlled system together
Input voltage:
                         Phase voltage 220V± 20%(176~264VAC), wire voltage 380V± 20%(304~356VAC);
                         Phase voltage 220V± 25%(165~275VAC), wire voltage 380V± 20%(285~475VAC)(Optional)
                         Phase voltage 220V± 30%(154~286VAC), wire voltage 380V± 30%(266~494VAC)(Optional)
Note: for other super lower input voltage(Vi), we'll specially designed by ourselves, namely adding  
           one step-up boost transformer outside AVR or other designed well!
Output voltage: Phase voltage 220VAC(stabilized), wire voltage 380VAC(stabilized)
Accuracy of voltage: +/-2~5%(adjustable)
Frequency: 50Hz/60Hz
Efficiency: >95%
Response time: <1.5S(against 10% input voltage deviation)
Ambient Temperature:  -10~+40Cº
Insulation resistance: >2MΩ
Waveform distortion: Non additional waveform distortion
Protection: Over-voltage/under-voltage, over-current/over-loading, short-circuit, bypass, surge(optional), 
                      Phase-sequence/phase failure, machine fault etc. protection functions.
Over-load capacity: 1min. At the rated current of 2times
Electricity-resistance strength: Power frequency sinusoidal is 2000VAC without breakdown and flash
                                                           over when it lasts 1min.

4).Remarks:
Custom-made specifications are acceptable, such as mains input voltage range, display mode (analog or digital meter), products' rings or packing material etc., when ordering, pls specify!!!

Application 

Widely used in post office, shopping mall, hospital, school, etc. And large/medium size mining factory. Power supply and important equipments.