3 phase 20kva to 40kva high frequency design dual input ups

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1 Unit/Units dual input ups (Min. Order)
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Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Must dual input ups
Model Number:
20-40kva (ISO) EH9335 dual input ups
Three Phase
Ac volt. dips,sags,voltage spike,surge volt., volt freq. fluctuation..
Output Voltage:
European Ac: 380/220V,400/230V,415/240V
online high frequency ups pure sine wave
IT infracture,ICT equipment, large data-center,telecom, bank ...
dual input ups:
regular and reserve mains input supply
SCR silicon module
Input P.F.:
Min. 0.99
Fairchild IGBT power kits
Output P.F.:
0.8 - 1 lagging
Inverter efficiency:
Ac input voltage range:
210v - 475v
Input frequency:
50Hz / 60 tolerance 10%
Output voltage:
380v / 220V 1% tolerance
output freq.:
auto-detection(Ac-mode), 0.05Hz tolerance(battery-mode)
Supply Ability
Supply Ability:
800 Unit/Units per Month dual input ups
Packaging & Delivery
Packaging Details
Wood carton with pallet
Shenzhen, Guangzhou, HK
Lead Time :
15-20 work-days


1 3 phase ups with dual input power sources
2 reserve and regular input voltage
3 3 phase + Neutral + Ground
4 high frequency

3 phase 20kva to 40kva high frequency design dual input ups  


Dual input ups


1. dual input ups with two ac input power sources, eg. from different grid, or gen-set,

    regular mains input supply and reserve mains input supply provide better power safe-guard for load and ups

    and protect battery's service time


2.  dual input ups typical design and secure power protection from galvanic isolation output transformer fixed in ups chassis:

    ISO design is optional online ups with isolation transformer

    completely isolating output pure sine wave power from input ac source in case of heavier noise interference, harmonic


    completely isolating output neutral from output ground line in case of unexpected electric shocks by touching ups.

    and EPO (Emergent power off) mode.


3. intelligent power protection solution from dual input ups composed of advanced, dsp-based and full-digitalized

    micro-processor control tech 

    high reliability power solution;

    individual phase controller: real time monitor ups and power status, management battery charge,recharge in an

   advanced method (ABM: Advanced battery management)


4. dual input ups high input power factor 0.99 and better ac-ultilization advantage from SCR silicon rectifier module,

    PFC integrated;


5. dual input ups high stability, high efficiency and power-saving advantage from advanced, transformer-less and

    dsp-based IGBT inverter.

    inverter efficiency up to 94% (normal online mode), and 98% on ECO mode. 3 individual IGBT inverter


6. Uninterruptibility power solution from dual input ups: 384vdc (360vdc,336vdc) internal battery (12v-7ah) or external battery

    bank(purpose-designed long autonomy external large battery).  Option


7. dual input ups adopts thorough communication interface and power management tool:

    Standard RS232, RS485, optional DB-9 dry contact, AS400 expansion card,

    SNMP network monitor, power management tool / protocol


8. dual input ups double ac mains input power safe-guard: regular mains input supply, reserve mains input supply


9. dual input ups more optional design for higher quality power solution: Power fed-back module, temperature sensor,

    higher IP protection class... and


10. dual input ups for flexible on-demand power expansion hot-redundancy:

      n+x parallel redundant ups

      max design ability: 8 units ( 2 units maximium for redundancy)


dual input ups, 3 phase online ups, high frequency ups, high frequency online ups, online high frequency ups,

online ups power, industrial online ups, ups indudstrial, industrial ups, online ups with isolation transformer




dual input ups schematic diagram:




dual input ups packaging:

1 unit / 1 inner carton

1 carton / 1 wooden case



3 phase + Neutral + Ground custom design 380vac / 220vac input and output

Ac nominal voltage 400vac / 230vac, 415vac / 240vac

Optional input harmonic distortion wave / current filter design

Optional bypass isolation design

Optional higher IP protection class

Optional power feed-back module design

Optional charger board expansion design

Optional flexible on-demand power expansion, hot-redundancy N+X design

Optional Galvanic isolation output transformer design for European medical field power solution


dual input ups electrical view photos


SCR+PFC rectifier module:

 dual input ups, 20kva ups, 40kva ups IGBT inverter PSDR board


dual input ups

electrical view


dual input ups

back view


dual input ups professional manufacturer : Shenzhen Must Power Limited

ISO 9001 (2008) certificate

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