300KVA Industrial Online UPS 3 Phase 300KVA 400KVA 500KVA Three Phase 380V/400V/415V Industrial Park Use UPS Backup Power Supply
Description
Introducing, the WTHD’s 300KVA Industrial Online UPS, a high-powered backup solution for industrial parks and large-scale operations. This three-phase UPS system is designed to provide seamless power supply in case of outages, ensuring that your business can continue running smoothly without any interruptions.
With a capacity of 300KVA and the option to upgrade to 400KVA or 500KVA, the WTHD Industrial Online UPS is capable of supporting a wide range of equipment and machinery in industrial settings. Whether you're running heavy-duty machinery or sensitive electronic equipment, this UPS system has you covered.
The UPS system operates at three-phase voltages of 380V, 400V, or 415V, making it compatible with most industrial electrical systems. With a high input power factor and low input current distortion, the WTHD’s UPS ensures that your equipment receives clean and stable power at all times.
One of the standout features of the WTHD Industrial Online UPS is its online double-conversion technology, which provides consistent and reliable power supply even in the event of fluctuations or disturbances in the mains power. This ensures that your equipment is always protected from voltage spikes, surges, and other electrical hazards.
The UPS system also comes equipped with advanced monitoring and management capabilities, allowing you to remotely monitor the status of the system and receive alerts in case of any issues. This ensures that you can always stay on top of your power supply and take appropriate action when needed.
In addition to its performance and reliability, the WTHD’s Industrial Online UPS is also built to last. Constructed from high-quality materials and backed by a comprehensive warranty, this UPS system is designed to provide years of trouble-free operation, giving you peace of mind and ensuring that your business is always up and running.
The WTHD’s 300KVA Industrial Online UPS is a powerful and reliable backup power solution for industrial parks and large-scale operations. With its high capacity, advanced features, and durable construction, this UPS system is the ideal choice for businesses looking to protect their valuable equipment and maintain uninterrupted operations

Industrial Online UPS |
WTHD-U-33300 |
WTHD-U-33400 |
WTHD-U-33500 |
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Rated capacity (KVA/KW) |
300/240 |
400/320 |
500/400 |
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Main Input
|
Phase |
Three-phase five-wire - 3L+N+PE |
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Input voltage (Vac) |
380/400/415 |
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Voltage range (Vac) |
±25% |
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Frequency range (Hz) |
45~65 |
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Power factor |
>0.95 - with filter |
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Bypass Input
|
Phase |
Three Phase Three Wire - 3L + N + PE |
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Input voltage (Vac) |
380/400/415 |
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Voltage range (Vac) |
+10%,+15%,+20% (can be set) ; -10%, -20%, -30% - can be set |
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Frequency range (Hz) |
±2%(±0.5%, +1%, ±2%, ±3% can be set |
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Output
|
Voltage (Vac) |
380/400/415 ±1% |
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Power factor |
0.8 |
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Frequency Hz |
Automatically track bypass frequency |
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Waveform |
Sine wave THDV less than 2% - pure linear load |
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Switching time (ms) |
0 ms |
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Overall efficiency |
≥95% |
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Overload capacity |
105%~110%: 60min to bypass; 110%~125%: 10min to bypass; >125%: 10s to bypass |
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Battery |
Battery voltage (Vac) |
(Standard 384) / 396/408 can be customized |
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Environment
|
Operating temperature (°C) |
-10~40 |
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Storage temperature (°C) |
-25^55 - without battery |
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Relative humidity |
0~95% - no frosting |
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Working altitude |
< 1500m, use derating according to GB/T3859.2 |
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Noise (dB) |
<70<>
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<75<>
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Other features
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Alarm function |
Output overload, mains abnormality, UPS fault, battery undervoltage, etc |
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Protective function |
Output short circuit, overload, over temperature, battery under voltage, output over and under voltage, fan failure alarm |
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Communication
function
|
Standard: RS232/RS485
optional: SNMP/JBUS/MODBUS/Dry Contact
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Mechanical features
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Dimensions (W*D*H mm) |
840*1035*1800 |
1200*1000*1800 |
1400*1000*1900 |
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Net weight (kg) |
1750 |
2000 |
3600 |
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Executive standard |
YD/T1095-2017 |









Q1: Are you a factory or a trading company?
A: We are a manufacturing factory, we focus on OEM and ODM.
Q2: What kind of certification do you have?
---ISO9000, ISO14001, CE, ROHS, Thiel, etc.
Q3: Product coverage and industries:
---Industrial online UPS, high frequency online UPS,
Modular UPS 1kVA ~800kVA UPS for any industrial and application.
Q4: About the battery.
Provide one-stop battery solutions; lead-acid and lithium batteries are available.
Q5: Do you accept OEM/ODM?
Yes, the entire series supports ODM/OEM, and the minimum order quantity is flexible.
Q6: About warranty.
---The warranty period is 1 to 3 years, and the battery warranty is 1 to 3 years; differentiate between different products and models.
Q7: Can I participate in bidding projects?
We support large-scale project bidding, authorized manufacturing, project design and more.
Q8: Are there overseas branches?
Currently, the Southeast Asia Division, the Eastern Europe Serbia Division, and the Middle East Division are set up.