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Shenzhen Consnant Technology Co., Ltd. 86-755-29772322
Parallel Low Frequency Online UPS 45Hz - 65Hz Max Protection Extra Wide Input Voltage

Parallel Low Frequency Online UPS 45Hz - 65Hz Max Protection Extra Wide Input Voltage

  • High Light

    online double conversion ups


    server battery backup

  • Nominal Voltage
    380/400/415VAC 3-phase 4-wire
  • Frequency Range
  • Input Soft Start Function
    0-100% 5-300S Settable
  • Input Power Factor
    >0.98(if Harmonic Filter Is Added)
  • Output Voltage
    380/400/415VAC 3-phase 4-wire
  • Mains Power Synchronization Window
  • Maximum Bypass Capacity
    1000% For 100ms
  • Phase Shift
    With 100% Balanced Load : <1°
  • Place of Origin
    Shenzhen, China
  • Brand Name
  • Certification
    IEC, IOS
  • Model Number
  • Minimum Order Quantity
  • Price
  • Packaging Details
    Export Standard Package
  • Delivery Time
    15-20 days after receiving 30% deposit
  • Payment Terms
    T/T, L/C, Western Union
  • Supply Ability
    500 per month

Parallel Low Frequency Online UPS 45Hz - 65Hz Max Protection Extra Wide Input Voltage

CNG331 Series

Low Frequency Online UPS


Product snapshot:

Model: 120-800KVA

Nominal Voltage: 380/400/415VAC

Nominal frequency: 50/60Hz

Output Power Factor: 0.9

Parallel : maximum 6 pcs UPS

Indicated Language: 12 types(En. Ru. Sp. Fr...)

Efficiency Rate of Machine: ≧94% (≧98% in ECO Mode)




















Rated input voltage 380/400/415VAC 3-phase 4-wire
Rated frequency 50/60Hz
Input parameters
Input voltage range ±25%℃≤
Input frequency range 45Hz~65Hz
Input soft start function 0-100% 5-300S settable
Input power factor >0.98(if harmonic filter is added)
Input harmonic current(THDi) <4.5%(if harmonic filter is added)
Voltage range -20%~+15%
Frequency range 50/60Hz±10%
Output parameters
Output voltage 380/400/415VAC 3-phase 4-wire
Voltage stability ±1%(steady status), ±3%(transient status)
frequency 50/60Hz
Mains power synchronization window ±5%
Actually measured frequency accuracy(internal clock) 50/60Hz±0.05Hz
Output power factor 0.9(output 90KW per 100KVA)
Transient response time <5ms
Inverter overload capacity At 0.9 power factor, 110% fori hour, 125% for 10 minutes and 150% for 60 seconds
Short circuit current form inverter 3ph 1.5ln for 5 seconds, iph 2.9ln for 5 seconds
Maximum bypass capacity 1000% for 100ms
Phase shift characteristic

With 100% balanced load : <1°;

With 100% imbalanced load :<1°

Total harmonic distortion(THDV)

100% linear load: <1%;

100% non-linear load: <3%

System efficiency(full load) Up to 94%(inverter efficiency is up to 98%)
Charger output voltage stability 1%
DC ripple voltage ≤1%
Operating environment  
Operating temperature range 0~40℃
Storage temperature -25℃~70℃(inverter efficiency is up to 98%)
Relative humidity 0~95%(non-condensing)
Maximum operating height ≤elevation 1000m, for elevation above 1000m, derate by 1% for every increase of 100m
Noise(1m) 58-68db
Protection level IP20
standard Safety: IEC60950-1 IEC62040-1-1 UL1778 EMC IEC62040-2 CLASS C2 EN50091-2 CLASS A
  Design and Test IEC62040-3
Physical parameters
Weight(kg) 980 1420 1200 1750 1350 2000 1600 2200 2100 2750 3690 6390 7300







1640*855*1900 1250*855*1900



2280*855*1900 2835*1000*1950 3988*1090*1950





Application mainly used in large IDC rooms, banks/securities settlement center, communication network management center, semi-production lines and large automation production with its control system. According to the special need of users was improved, used in large sports venues, conference room, theather, highway and railway tunnels metal halide lamp lighting system.


Key Features:

  • Use advanced 6th generation DSP and full digital control technologies to realize higher system stability.
  • Output power factor is 0.9, carrying capacity than conventional UPS with 10% above, as users reduce investment cost.
  • Advanced distributed activeparallel technology can realize parallel operation of 6 pieces UPS units without the need of centralized bypass cabinet.
  • 6-inch extra LCD that can display 12 language(Chinese, English, Russian, Spanish, French and so on.)
  • Extra wide input voltage and frequency range make it adapt to serve powewr ggrid environment.
  • Intelligent battery management maintains battery automatically to prolong the battery life.
  • Standard input/output filter improves the system EMC performance.
  • Extra strong capability to withstand output overload and and short circuit, ensuring the system stability and system safety under extreme conditions.
  • Layered independently-sealed ventilation channel and re-dundant fan, circuit boards with protective paints and a dust filter embedded make it highly efficient to disspate heat and protect the product effectively under severe environment.

Efficient-energy- saving+ Environmental-protection+innovation:


CNG331 series UPS for China’s top product, nominal capacity from 120KVA to 800KVA, dad application in key equipment for the power system protection, could provide high quality power, with high level of availability and scalability, and invest iminimize Total Cost of the Ownership(YCO)


Excellent Electrical Performance:


Online double transform structure, double DSP control technology.


Parallel Low Frequency Online UPS 45Hz - 65Hz Max Protection Extra Wide Input Voltage 0



Super output overload capacity:

  •  Three phase UPS working:

110% rated load for one hour

125% rated load for ten minutes

150% rated load for one minute

  •  Single phase UPS working: 200% arted load for 30 seconds
  •  When the user overload no more than the above range, UPS will continue to maintain the load by the inverter power supply status.(Note: output power factor is 0.9)


With a strong anti-step of load and short circuit output capacity:


UPS power supply operation in the worst working conditions encountered by the user in the UPS

Output load 100℃ rated load for the input or the removal operation. The most situation is that the UPS output is short circuit.

Sinc the CONSNANT UPS, configure a unique design of the output current limiting circuit. Even if the user inadventently caused by the output short-circuit fault, it’s UPS inverter will not be damaged. Typical UPS output capacity of short circuit’

Three phase work, the output current is limited to 160% nominal output current, 5 seconds.

Single-phase operation, the output current is limited to 290% nominal output current, 5 second.


Superior ability with three phase unbalanced load:


For the three phase in/three phase out UPS, even with a peak in the ratio(crest ratio) is 3:1 in the non-linear loads like computers, they can;t reduce the rated output power conditions and provide users with distortion less than 35% high-quality sine wave power. Moreover, as the machine is equipped with adaptive equilinrium adjustment circuit, when followed 100℃ unbalanced load(one-phase no-load, two phase full load), they can ensure that the three-phase phase voltage difference is less that 2C , and phase difference between the 120º±1º ranges. This indicator was higher than similar products of other companies.


N+X redundant design of auxiliary power supply:


Controlled circuit of auxiliary power for each provide reliable, stable power protection so that ensure all the control circuit to work properly. To ensure the normal operation of UPS systems play a key role. CNG331 series UPS’s auxiliary power adopt 1+1 redundancy design, when one of the auxiliary power failure, can be continued by another auxiliary power supply. UPS continue to operate normally, while the LCD screen displays this warning message.


Unique battery protection:


Battery and UPS by connecting an external battery switch, the battery switch is a “three state” DC switch that can be manually closed, and has a control circuit controlled by the UPS electronic tripping device. Effectively reducing the past due to battery leakage or short circuit caused the fire risk for the safe operation of the engine room has provided a guarantee. Battery switch has the following characteristics:

1. Battery is isolation, safe and reliable;

2. Short circuit protection

3. In case of battery voltage causes the inverter lock, then switch off automatically to avoid battery discharge damage

4. Fitted with a remote emergency stop button, emergency stop button can be used remotely disconnect the switch; misuse protection


Easy maintenance of structure design:


Using user-friendly control panel modular inline graphic design, to ensure reliable connection between the plug plates, the connection is configurated with a connector locking mechanical”locking” device. Users simply open the cabinet door that can be observed a glance at the control panel of the UPS “self diagnosis” status monitor the work of the state. As a result, users can quickly access to nearly 70-90 species of fault alarm indication, and improve the maintainability of this UPS.



Efficiency, energy-saving, environmental protection design, efficiency of the machine is up to 94%:


Overview of large UPS equipment, efficiency, impact significantly on energy costs that percentage of minor differences can save considerable operating costs. Our design team from start improve efficiency and make a lot of effort. Especially for the actaul operation of the load rate (Example:50% of the load operation, etc) were carefully considered.


Clean stable output waveform:


Output voltage curve 1% change in the sine envelope line digital pulse-width modulation with free frequency 250%, 200, 120%, 100%. roteting UPS SCR-based UPS Translator-based UPS CNG331 UPS Power Demands Non-liner load 100% . To ensure the non-linear load voltage voltage distortion ≤3% the min capacity of kinds of UPS need


Parallel Low Frequency Online UPS 45Hz - 65Hz Max Protection Extra Wide Input Voltage 1



High input power factor level, harmonic distortion cancellation: save cost of energy consumption, reduce power pollution:


As well-known, the rectifier filtering load( such as computer, communication equipment, appliances or general UPS ) was introduced to power grid largely and the power grid will be polluted, higher harmonic current that caused by pollution through the whole power supply system. Over current that flow past mid line and motor load are heat abnormally. To deal with those problems, we provide some solutions to eliminate the harmonic pollution so that ensure quality of power reach the standard of Green power: CNG331 series are adopting optional input filter and 12 pulses rectifier filter, the solution improves the input power factor to above 0.95, reduce the input harmonic current to 10%.



Core of high available configuration great parallel output features:


■There are frequency busbar and current busbar in parallel control system, they can control each UPS phase relation and flow equalize output feature. So the system not only ensure each UPS located in general UPS power supply can share load current, but also it can reduce the circulation maybe happened in parallel system to zero.

■ Moreover, because of sensitive circulation survey, it can survey the operative mode of UPS power supply system constantly and with high reliability (MTBF reach to 1 million hours), it is the top level in the similar type

High reliable UPS power solution


Unique option, one-step service:


Unique Option, One-stop Service

-SNMP card

-Parallel card

-Dry contact card

-C class lighting protection case

-Outlet option

-Bypass flow equalize inductance

-Battery temperature transmitter

- JBUS/MODBUS interface card

-UPS generator room signal adapter

-5 times harmonic or 11 times harmonic filter



Sales Service:

1. 2% spares together with shipment for urgent issue.

2. All of the necessary documents such as drawing, manaul etc.

3. We will provide the online service by mail

4. We also can desptach engineer to assist you solve the problem if necessary. But you are requested to pay for the cost of ticket, hotel etc.