20KVA Power-Frequency 3 in 3 out Online (Double Conversion) Uninterruptible Power Supply

20KVA 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-G33-20KVA Power (VA): 20KVA Phase number: 3L+Pe / 3L+N+Pe AC Voltage: 380/400/415 Volts[Customizable] Stable voltage range: ± 25% Stable voltage accuracy: ± 1% DC Voltage: 384VDC Battery: External Switching time: 0ms

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

Industrial
Automation

Data Center

Communication
Base Station

Medical
Equipment

Product Specification

High Performance · High Reliability · Professional-grade Products

Model:KHZ-G33-20KVA

Basic Information

Product Model

KHZ-G33-20KVA

Rated Capacity

20KVA /16KW / 18KW / 20KW

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

32

Battery rated voltage

384

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)

300*600*810

Weight

120

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.

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.

Shenzhen KHZ Technology Co., Ltd. | (c) Copyright 2021 - 2026 Design By | Automatic Voltage Regulator (AVR) | Uninterruptible Power Supply (UPS)

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