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Eastsun Electricity Science and Technology (China) Co., Ltd.

Single Phase UPS, UPS Power, Low Frequency UPS manufacturer / supplier in China, offering 4kVA Online 0 Transfer Time Low Frequency UPS Electronics, 100kVA Online 3 Phse UPS Power Source, 220V 240V 384V PWM PV Solar Charging Controller and so on.

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4kVA Online 0 Transfer Time Low Frequency UPS Electronics

FOB Price: Get Latest Price
Min. Order: 1 Piece
Port: Foshan, China
Production Capacity: 50000pieces/Year
Payment Terms: L/C, T/T, Western Union, Money Gram, TT, LC, money gram, western union

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Basic Info
  • Model NO.: DD4K
  • Type: On-line
  • Application: Industry
  • Standby Time: Long Back up Model
  • Output Capacity: Medium Type
  • Brand: Eastsun
  • Warranty: 1 Year
  • Provide: OEM and ODM Service
  • Display: LCD
  • DC Input Voltage: 48V/96V
  • Communication Software: RS232
  • Transport Package: Carton Box
  • Origin: Foshan
  • Phase: Single Phase
  • Protection: Short Circuit
  • Classification: Single Phase Online UPS
  • Standby UPS: Online UPS
  • Equipment Mode: Centralized Model
  • Color: Black
  • Output Wave Form: Pure Sine Wave
  • Efficiency: >90%
  • AC Output Voltage: 220V
  • Certificate: Ce and RoHS
  • Trademark: eastsun
  • Specification: 480*260*430
  • HS Code: 85044020
Product Description
4KVA online 0 transfer time low frequency UPS electronics

Product description: 
ESD Series UPS is adopting the technology, which combined with the world's most advanced DSP digital control technology currently, and IGBT high frequency Pulse Width Modulation technique (PWM). Double-conversion online topology design makes the output frequency of UPS, which used for tracking, phase-locking, voltage regulator and filter out noise, interference from the power grid fluctuations in pure sine wave power supply, and make the UPS more comprehensive and perfectly protection for the users.

1. High charging capability
2. Cold start and mains start function
3. Standard configuration with output isolation transformer
4. Suitable for all kinds of loads (resistive, inductive and non-linear loads etc)
5. Other options(parallel kits, input isolation transformer, bypass isolation transformer and harmonic suppressor)
6. High overload capability (up to 150%)
7. DSP (Digital Signal Processors) technology
8. Bypass dual DSP control design to enhance more reliability
9. Single / single-phase models with on-line double conversion technology
10. Advanced communications RS232 and USB ports (standard), SNMP, dry contacts and RS485 (options)
11. Superior protection (surge, short-circuit, over-voltage, undervoltages, overcharge, overload, over temperature, reverse connection protection etc.)
Nominal capacity (KVA/KW)1/0.82/1.63/2.44/3.25/46/4.8
Battery voltage24VDC/48VDC48VDC/96VDC
Noise≤45dB(Distance 1m)   
Size(W*D*H mm)400*193*320480*260*430
Weight 303540506070
Nominal capacity (KVA/KW)8/6.410/812/9.615/1220/16
Battery voltage96VDC/192VDC192VDC
Noise≤50dB(Distance 1m)   ≤53dB(Distance 1m)  
Size(W*D*H mm)550*260*640(96V)/625*340*720(192V)625*340*720
Weight 85100115125150
Common prameter
 Input voltage220VAC±25%
Input frequency50/60HZ±10%
Output voltage220VAC±1%
Output frequency Synchronized with utility in mains mode, 50/60HZ±1% in battery mode 
Charge current6A~20A(adjustable)
Waveform Sine wave 
Total harmonic distortion Linear load<3%; non-linear load<5%
Crest factor 3:1
Transfer time 0 ms
Inverter overload capability 125%10min,150% 1min
Efficiency(load 100%)95%
ProtectionsShort-circuit, overload, overvoltage, undervoltage, low battery, overtemperature, fan fault
Operating temperature-20~40ºC
Relative humidity0%~90%
Running altitude(maximum)<1,000(each additional 100meters power fell 1% to a maximum 4,000meters)
CoolingForced  ventilation

Q1 : What is you advantages?
a).We are professional ups manufacturer for more than ten years and we have these staffs with rich
     production and R&D 
b) Excellent workers and skilled engineers 
c).Our aims are to provide every customer high quality, reasonable price and excellent 
 d)we can guarantee to send the goods on time. And also accept any transportation ways that
you require 
Q2 : How do you control the production quality?
a) For materials, we have IQC departments and the IQC testing follow MIL-STD-105E standard
b) in production have 4 times function testing
c) all of our products with 100% burn-in testing
d) 100% QC testing before delivery
Q3 : Do you accept OEM/ODM?
A3 : ODM&OEM are warmly welcomed !!!
Q4 : what's your payment?
a) We can accept payment terms of T/T, Western Union.
 Samples and trial order accept T/T & Western Union. normal order accept T/T &Western Union 
b) 30% ADVANCE DEPOSIT after buyer's confirmed payment, the balance should be paid before shipping when goods are ready.
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