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100KVA Sirius advance Auto voltage Regulator(AVR) with Indoor IP21 cabinet and Fuji contactor

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100KVA Sirius advance Auto voltage Regulator(AVR) with Indoor IP21 cabinet and Fuji contactor

Country/Region china
City & Province wenzhou zhejiang
Categories Precision Parts

Product Details

Wenzhou Modern Group is a leading company in the manufacture of Power Quality and Energy Saving Products in China.


Milestones:

  • 1979: Founded as a manufacturer of transformer based power products
  • 1988: Constant voltage transformer introduced and UL certified
  • 1992: Became a strategic partner for GE Healthcare in China
  • 1995: Obtained ISO9001 quality system
  • 2003: Introduction of the patent variable transformer
  • 2005: Became a strategy partner of Emerson Network Power
  • 2008: Became a strategy partner of NAURA
  • 2010: Obtain CE for the voltage stabilizer
  • 2013: Obtain CE for voltage optimization unit 
  • 2017: Became a strategy partner of Mitsubishi Shanghai

Ours advanced:

  Whole Vacuum Pressure Impregnation Process( VPI ):   

 

 1)  VPI makes the transformer more quite.

 2)  VPI Improve insulation class to H class(Temp. Raised 180℃)

      or C class ( Temp. Raised 220℃).

 3)  VPI keeps the salt spray corrosion away.

 4)  VPI Prevent accidental contact and electric shock.

 

 

 

Non-Flammable and Non-explosive coil Process:

1) Makes the transformer easy to heat radiation.

2) Makes the cooling fan into the transformer.


Features:

1. Silent design with moving Long life roller carbon brushes, High reliability and low maintenance
2. Unique compact dimension.
3. Digital control.

4. Over/Under voltage protection, Overload protection, Phase lost and phase error protection
5. Efficiency up to 98%
6. Independent phase voltage regulation. Changeable through LCD touchscreen display
on site.

7. Manual bypass, Automatic bypass (Optional)


Main components :

Buck/boost transformer                                                                      

 

Often referred to as 'booster' transformer, it is a standard dry-type transformer with the secondary winding connected in series to the mains and the primary winding supplied by the voltage regulator.

 

 

 

 

Voltage regulator                                                                                                   

Basically, it is an autotransformer with continuously variable transformer ratio. The voltage intake varies depending on the position of the rolling contacts; therefore the voltage supplied to the booster transformer primary winding also varies. Being the voltage across the regulator contacts (and consequently that on the secondary winding of the booster transformer) either in phase or in opposition to the supply voltage, it is then added or subtracted to the supply voltage, thus compensating its variations.

Auxiliary circuit with a microprocessor                                                                       

The DSP (Digital Signal Processor) microprocessor-based control circuit (specifically designed for
drives with the totally digitalized signal) compares the output voltage value to the reference one sampling it 2000 times per second.
When an anomaly is detected, the controller drives the voltage regulator gear motor. By doing so, the
regulator rollers change their position thus varying the voltage drawn and supplied to the buck/boost
transformer primary winding. The input voltage variation is therefore automatically compensated.
The control system operates so that the output accuracy is ±0.5%. The microprocessor is fitted with the
soft stop function enabling a precise positioning of the regulator rollers regulation to work smoothly
even in case of strong fluctuation of the input voltage.

        


Specifications:

 Input                                                                                                                      
Rated voltage                 380V/400V/415V/460V
Input stable voltage range   304V~456V
Working range240V~500V
Frequency50HZ/60HZ
Power Factor≥0.99
Output                                                                                                                    
Output voltage380V/400V/415V/460V
Max Current750A
Accuracy1%
Efficiency≥0.98%
Wave deformationnil
Power Factor0.8~1
Output protectedUnder voltage:Vn-20%(Can be reset), Overvoltage: Vn+10%, Over Current: In*0.9
Overload Capacity 

150%Over load 10seconds

120%Over Load 60seconds

110%Over Load 10minutes 
 General                                                                                                                 
Technology Digital Signal Processing(DSP) And Voltage vector control Technology
Method of voltage regulationThree phase independent regulation with long life roller brush drive by three servo motors
Correction timeStep up or step down 10% of rated voltage from the input voltage, The output will stable to rated voltage after 2 seconds 
Safe start The AVR will start output after 6 seconds delay
Insulation class H & C class(180℃ & 220℃)
Insulation resistance≥5MΩ 
Cooling SystemAuto Forced Air
Wire system3-phase-5-wire-system & 3-phase-4-wire-system without neutral 
Protection class IP44(Outdoor)
                                                                                                                                                                

 


HOW TO CHOOSE A VOLTAGE STABILIZER?


What's the difference between Roller carbon brush with the Flat carbon brush?


Comparative of the different of Voltage stabilizer:

 Servo with the roller brush and columnar transformerServo with the flat  brush and columnar transformerServo with the flat brush and Flat transformer

Induction AVR

with Oil cooling

Electric AVRStatic AVR
Typical efficiency≥98%≥97%≥95%80%~90%90%≥98%
Power factor0.990.990.85~0.950.8~0.90.85~0.90.8
Correction speed1s1s1sSlow, 1 Min0.05s0.1s
ReliabilityHighMiddleLowHighMiddleMiddle
WeightMiddleHeavysmallVery heavysmallsmaller
DimensionsmallLargeMiddleHugesmallersmallest
Noise

Silent with 

No Noise

Noise when

Voltage regulated

Noise when

Voltage regulated

Continuous NoiseCooling Fan's NoiseCooling Fan's Noise
MaintenanceClean the dust once per 6 monthsClean the dust once per 6 monthsClean the dust once per 6 monthsComplicated    due to OilClean the dust once per 6 monthsClean the dust once per 6 months
ApplicationAll kinds loadAll kinds loadsFamilyIndustrialResidential Load

Residential Load

InstallAnywhereAnywhereAnywhereOutdoor OnlyAnywhereAnywhere
Environmental CleanCleanCleanPollutedCleanClean

 
What's the difference of stable range and working range?

How to choose the capacity of the voltage stabilizer:

Principles

The voltage stabilizer and the voltage regulator are chosen according to the current:

1 Continuous working current is smaller than the rated current of the voltage stabilizer or voltage regulator, Better to have a design margin of 20%.

 

2 The loads start current is smaller than 5 times of rated current of the servo voltage stabilizer with the roller brush and columnar transformer. or 2.5 times the servo voltage stabilizer with a flat brush, 2 times the static voltage stabilizer. 


How to choose the capacity of the voltage stabilizer:

Loads Rated current:

Single phase:

Rated current In=Pn/(Vn*cosφ)

Three phase:

Rated current In= Pn/(1.732*Vn*cosφ

 

Note:

Pn — Load capacity(kW),

Vn — Rated voltage(V), Tt is Line to Line voltage in three phase system

Cosφ — Power factor. 


How to choose the capacity of the voltage stabilizer:

Loads surge current:

Three phase(Motors):

1 Direct start: I(tmax)= In total + In(max)*6

2 Autotransformer start: I(tmax)= In total + In(max)*3

3 Star-Delta start:  I(tmax)= In total + In(max)*3

4 Variable Frequency start:  I(tmax)= In total + In(max)*2

5 Soft start: I(tmax)= In total + In(max)*3

 

Note:

I(tmax)— The max start current.

In total — The total rated currents of the loads

In(max)— The max starting current of the motor.

 

 

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