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400KVA Power-Frequency 3 in 3 out Online (Double Conversion) Uninterruptible Power Supply

400KVA Power-Frequency 3 in 3 out Online (Double Conversion) Uninterruptible Power Supply

Name: Three Phase Power Frequency UPS Type: Online Double Conversion Brand: CNKHZ Model Name: KHZ-G33-400KVA Power (VA): 400KVA Phase number: 3L+Pe / 3L+N+Pe AC Voltage: 380/400/415 Volts[Customizable] Stable voltage range: ± 25% Stable voltage accuracy: ± 1% DC Voltage: 382V DC Battery: External Switching time: 0ms
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How does a UPS work?

When utility power is normal, the UPS provides power to connected equipment, and charges its internal battery.

Utility
Input Power
UPS
Internal Battery (Charging)
Output Power
Computers
Communication Equipment
Smart Home Devices
NAS
Utility
Input Power
UPS
Internal Battery (Charging)
Output Power
Computers
Communication Equipment
Smart Home Devices
NAS

INDUSTRIAL FREQUENCY UPS

Industrial-Grade Voltage-Stabilized
Uninterruptible Power Solution

UPS Product

Product Overview

This industrial-frequency online UPS adopts DSP full digital control technology and delivers a clean, stable pure sine wave output. It provides reliable uninterruptible power protection for industrial equipment and critical loads.

Performance characteristics:

  • Online double conversion, dual-core DSP full digital control
  • Intelligent monitoring, zero-switch static transfer
  • Input-output full isolation, ultra-low output zero-ground voltage
  • DC UPS fully isolated from utility power
  • Wide input voltage range, three-phase independent regulation
  • Complete protections: overvoltage, undervoltage, overcurrent, short circuit, overtemperature
  • 6th gen IGBT + SVPWM technology, industrial-grade design
  • Friendly HMI: large English LCD touch screen (optional)
  • Advanced redundant parallel technology, easy expansion
  • GCI grid-tie operation supported
  • Rich network interfaces: RS232, RS485, RJ45, dry contact, optional Wi-Fi for mobile monitoring
  • Up to 256 event logs for power analysis (touch screen optional)

Key Features

  • Double-conversion online design for clean and stable output
  • Intelligent monitoring and multi-protections for safer operation
  • Wide input voltage range for harsh grid conditions
  • High efficiency and energy saving for lower operating cost
  • Modular design for easy maintenance and flexible expansion

Highly flexible and extendable

  • Battery voltage can be chosen based on capacity to meet different requirements, enabling longer backup time and lower system investment.
  • Smart battery monitoring with adjustable charge current. Standard 4A charger, optional 8A charger supports longer discharge time and larger battery capacity.
  • Ultra-wide input voltage and frequency range ensures stable operation even in poor power conditions.
  • Digital control DSP technology with high-quality power components makes the system safe and reliable.

Applications

factory

Industrial
Automation

monitor

Data Center

satellite

Communication
Base Station

medical

Medical
Equipment

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Product Specification

High Performance · High Reliability · Professional-grade Products

Model:KHZ-G33-400KVA
Basic Information
Product Model
KHZ-G33-400KVA
Rated Capacity
400KVA / 320KW / 360KW / 400KW
Wiring method
3L + N + PE /3L + PE
Input characteristics
Input voltage range (before operation)
±25%
Input voltage range (operating)
380/400/415 Volts【Customizable】
Input frequency
50/60Hz
Bypass input voltage
According to the municipal power supply
Input power factor
0.8/0.9/1.0
Input Current THD
<5%(fully loaded)
Output characteristics
Output voltage range
380/400/415 Volts【Customizable】
Output power factor
0.8 / 0.9 / 1.0
Waveform distortion
<5%(fully loaded)
Switch Time
0 ms
Battery Protection and Charging
Number of battery cells
40
Battery rated voltage
480
Battery and endurance
Customize according to actual needs
Automatic restart
Automatic restart after mains power is restored
DC cold start
Supports voltage above alarm point.
Work environment
Operating temperature
40℃ ~ 45℃
Working humidity
0~95%(Non-condensing)
Storage Temperature
-25℃ ~ 55℃
Noise
≤65 dB
Altitude
>1500 meters requires reduced usage.
Protective function
  • Smart fan speed control Fault detection
  • Battery Abnormal Detection Alarm
  • Input Phase Sequence Detection
  • Adjustable bypass output voltage protection
  • Over-temperature protection (>85℃bypass)
Physical parameters
Dimensions (W×D×H)
1210*1000*1800
Weight
1420


KHZ-G33-800KVA

KHZ-G33-800KVA

KHZ-G33-800KVA


UPS Selection Criteria

A few key points shall be considered when selecting a UPS based on individual needs.

The Basic Requirements
  • How much power is needed?

    The UPS must be able to handle the total power load of the equipment that requires protection. It is recommended that the output watt capacity of the UPS is 20 - 30% higher than the total wattage of its connected equipment.

  • How much runtime is needed?

    Runtime is the amount of time the UPS can provide battery power for connected equipment when utility power fails. Note that adding more equipment loads will shorten the runtime.

  • How much capacity is needed?

    As business expands, more equipment may need power protection, thus UPS capacity may need to be reserved at first. Use the equipment's power load and required runtime to calculate the suitable reserved capacity.

The Specifications
What is the voltage of the input power source?

Choose a UPS with voltage input that is equivalent to the input power of the equipment. The applicable UPS voltage differs by country, so it is vital to select the UPS with the corresponding voltage level.

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Which UPS topology is the most suitable?

Select the topology based on power needs. There are Standby, Line-Interactive or Online topology for UPS. The decision depends on the level of power protection and energy efficiency required.

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