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CNG330 Series 10-600KVA 3Ph Low Frequency Online UPS

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Model: CNG330 10-600KVA(3Ph/3Ph)
Nominal Input Voltage: 380/400/415VAC
Efficiency: 94%
Output Power Factor: 0.9
Parallel: Maximum 6 PCS UPS
Battery can be shared in parallel mode

Application field:
• IDC
• Hospital
• Traffic control field
• Bank, Securities Clearing Center
• Control applications in industrial processes
• Medium-scale network management system, billing center

Description

CNG330 series is a three-in three-out low frequency online double-conversion UPS with built-in output isolation transformer, covering power capacity from 10KVA to 600KVA. Adopting dual DSP full digital control architecture and industrial-grade transformer isolation design, it delivers ultra-clean, stable pure sine wave power for mission-critical loads. This series features strong anti-impact, overload resistance, excellent EMC performance and ultra-wide grid adaptability, perfectly solving all power anomalies including voltage surge, sag, harmonic distortion, frequency drift and lightning interference. It supports N+X parallel redundant operation, long-delay battery configuration and multi-channel intelligent monitoring, becoming the preferred power guarantee solution for industrial, medical, financial, data center and transportation core infrastructure with harsh power grid environments.

 

Core Advantages & Features:

1. Online Double Conversion + Isolation Transformer Core Architecture

Classic VFI online double conversion topology integrated with built-in low-frequency isolation transformer. The transformer acts as natural EMI filter and electrical isolation barrier, thoroughly isolating grid distortion, lightning surge and zero-sequence interference; output voltage total harmonic distortion THDV ≤2%, fully compatible with inductive, capacitive, nonlinear and heavy impulse loads such as motors, CT/MRI medical equipment, CNC machine tools and industrial compressors.

2. Powerful Overload & Short-Circuit Withstand Capacity

Industrial reinforced power loop design, withstand 150% overload for 10min, 200% overload for 30s, instant short-circuit protection without shutdown. It can bear huge inrush current during heavy equipment startup, avoid accidental power cut caused by load surge, effectively reduce factory production halt and medical equipment interruption risks.

3. Ultra-Wide Grid Adaptability for Harsh Mains

Input voltage range ±20% rated voltage, input frequency tolerance 45~55Hz/55~65Hz. Stable continuous operation under severe grid fluctuation without extra voltage stabilizer; input current THDi<4%, low harmonic pollution to municipal power grid, conform to international power quality standards.

4. Dual DSP Full Digital Intelligent Control

Dual high-speed DSP collaborative control, real-time closed-loop regulation of voltage, current and frequency, fast dynamic response to load change. 6-inch multi-language large LCD touch screen (12 languages including Chinese, English, Russian, Spanish), all operating parameters, fault records and battery status visualized at a glance.

5. Flexible Parallel Redundancy & Expandable Runtime

Distributed active parallel technology, max 6 units parallel without centralized bypass cabinet, realize N+1/N+2 redundant backup for zero downtime. Support external extended battery cabinet, customizable backup time from 30mins to several hours according to user demand; intelligent temperature compensation charging to extend battery service life by over 30%.

6. Comprehensive Multi-Layer Safety Protection

Complete protection logic covering input over/under voltage, output overvoltage/overload/short circuit, battery overcharge/over-discharge/reverse connection, over-temperature, EPO emergency power off. Independent layered sealed air duct, redundant cooling fans, PCB anti-corrosion coating and built-in dust filter, adapt to high-dust, high-humidity industrial workshop environment; standard maintenance bypass switch supports online maintenance without cutting load power supply.

7. Rich Remote Monitoring & Communication Interfaces

Standard RS232, dry contact signal port, optional SNMP network monitoring card, supporting Watch & Save 3000 monitoring software and Power Net Guard remote cloud management. Real-time remote data query, fault alarm, parameter configuration via PC, mobile phone or data center environment monitoring platform.

 

Working Diagram:

CNG330 series low frequency online UPS integrates mature transformer isolation technology and full digital intelligent control, delivering unparalleled stability, load compatibility and harsh environment adaptability compared with high-frequency UPS. With long service life, low failure rate and complete remote management system, it minimizes total operation cost (TCO) for users, providing 7×24h zero-interruption reliable power protection for all mission-critical facilities where power failure will cause massive economic loss or safety hazard.

Typical Application Scenarios :

  1. Industrial Manufacturing: CNC equipment, PLC automation production line, chemical/metallurgy mine central control room, water pump & air compressor control system
  2. Medical Institutions: CT, MRI, dialysis equipment, operating room life support system, hospital central monitoring
  3. Finance & Securities: Bank vault, clearing center, transaction server room, tax billing system
  4. Data & Communication Infrastructure: Medium & large IDC computer room, telecom core network equipment, gateway server
  5. Transportation & Public Infrastructure: Metro signal control, highway tunnel monitoring, airport dispatch system, railway power monitoring
  6. Government & Research: Laboratory precision testing instruments, government central server, large exhibition venue power control

Production:

 Low Frequency Online UPS

 

 

Product service:

1. Pre-sales consultation; After-sales worry-free.

2. Support ODM and OEM.

3. Online guidance and Technical support.

 

Technical Parameters:

Model CNG330 10KVA CNG330 20KVA CNG330 30KVA CNG330 40KVA CNG330 60KVA CNG330 80KVA CNG330 100KVA CNG330 120KVA CNG330 160KVA CNG330 200KVA CNG330 250KVA CNG330 300KVA CNG330 400KVA CNG330 500KVA CNG330 600KVA
Capacity 8KW/9KW 16KW/18KW 24KW/27KW 32KW/36KW 48KW/54KW 64KW/72KW KW/80KW 96KW/108KW 128KW/144KW 160KW/180KW 200KW/225KW 240KW/270KW 320KW/360KW 400KW/450KW 480KW/540KW
Input
Rated voltage 400Vac three-phase
Voltage range 380/400/415VAC (+25%,Can be set through the LCD panel)
Frequency range 40-70Hz(Automatically select synchronization range according to grid frequency)
Range(HZ) 50±5%(±10%)Bypass synchronization tracking
Rectifying pulse number 6 pulse rectification 6/12 pulse rectification 12 pulse rectification
Phase system 3φ4W+PE(Three phase five wire system)
Battery voltage(VDC) 384 480
Battery quantity(section) Standard with 32(30~34, can be set through the LCD panel)
Standard 40 knots(38~42 knots, can be set by LCD panel)
Output
Power factor 0.8/0.9
Voltage(V) L-N:220±1%  L-L:380±1%
Voltage Regulation <1%(online and battery mode) at 100% linear load,<2% allow 100% imbalance
Frequency(Hz) Normal power, tracking the frequency of power , Grid abnormal. 50±0.2%
Transfer time(ms) 0
Parallel operation mode(parallel type) 6 parallel machine
Recovery Time Dynamic load voltage transient <5%, recovery within 5ms
Waveform distortion Linear loadTHD<3%; Nonlinear loadTHD<5%
Overload capacity 125% full load for 10 minutes, maintain 150% full load 1 minute and then switch to bypass power supply, after reducing the load can automatically restore the inverter
Crest factor 3:1
System
Communication function Provides dry contract communication and RS232/RS485, Optional SNMP option to achieve intelligent monitoring of UPS
Panel display LED displays working status and fault indication; LCD displays three-phase input voltage,input frequency, three-phase output voltage, load, battery voltage, battery charge and discharge current,etc.
Display LCD 7°touch screen display
The audio noise(db) <65(within 1 meter)
Alarm function Battery low voltage, abnormal power supply, overload, UPS failure, over temperature protection
Protection Input over voltage, battery under voltage, overload, short circuit, over temperature protection
Cooling way Forced cooling
Operating temperature(℃) -10~35 without de-rating
Humidity 0~95%, non-condensing
Max Altitude Rated power at 1000m, (increase 100m and decrease by -1%), maximum 4000m
Protect Level IP21
Size(W*D*H)(mm) 540*657*1132 555*725*1290 800*745*1700 800*850*1900 1204*850*1900 2600*1200*2000
Gross Weight(kg) 196 233 276 329 415 419 724 730 863 973 1160 1275 1375 1880 2190
Net Weight(kg) 173 211 254 306 385 390 665 675 805 900 1080 1200 1300 1768 1972

 

What is the core feature of CNG330 low frequency UPS different from high frequency UPS?
CNG330 is equipped with built-in output isolation transformer, which can isolate zero-sequence interference, lightning surge and grid harmonic pollution completely. It has stronger overload resistance and impulse load capacity, suitable for industrial, medical and heavy inductive loads. High-frequency UPS without transformer is only suitable for conventional IT light loads.
Is CNG330 three-phase input and three-phase output? Can special voltage specifications be customized?
Standard version is 3-phase 4-wire input & output with rated 380/400/415VAC. Special voltages like 208V, 440V, 480V are available for customized orders.
What is the maximum parallel quantity of CNG330? Is an extra parallel cabinet required?
Up to 6 units can be paralleled directly without independent parallel cabinet. N+1/N+2 redundant configuration is supported to realize zero-downtime backup and online maintenance.
Can UPS units with different battery backup time run in parallel?
Not recommended. All paralleled UPS must be equipped with batteries of identical voltage, quantity and backup runtime to avoid circulating current between units.
Does the UPS support battery temperature compensation charging? What advantages does it bring?
Yes. Charging voltage will automatically adjust according to battery ambient temperature, preventing overcharging at high temperature and undercharging at low temperature, extending battery service life by over 30%.
How to calculate matched battery capacity for long backup projects?
Provide UPS rated capacity, required backup time and DC voltage to our sales team, we will offer accurate battery quantity and battery cabinet matching scheme.
What screen is equipped for CNG330? What languages are available?
Standard 6-inch touch LCD screen, supporting 12 global languages including Chinese, English, Russian, Spanish and French. It displays real-time voltage, current, load ratio, battery parameters and fault records.
Can the UPS work in dusty and humid industrial workshops?
Yes. It adopts independent sealed air duct, redundant cooling fans, PCB three-proof coating and built-in dust filter. Working temperature range: -10℃ ~ +40℃, working humidity: 20%~90% non-condensing.

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