Low Frequency Online Ups 3 Phase Ups 10KVA 15KVA 20KVA 30KVA 40KVA 60KVA 80KVA 100KVA 120KVA Industrial Ups
Description
Introducing, the WTHD’s Low Frequency Online Ups 3 Phase Ups, available in a range of sizes from 10KVA to 120KVA. This industrial-grade UPS is designed to provide reliable power protection for your critical equipment and keep your operations running smoothly.
With advanced technology and a low frequency design, the WTHD UPS offers superior performance and efficiency. It is capable of handling high power loads with ease, ensuring that your sensitive equipment is always protected from power fluctuations and outages.
The WTHD UPS features a durable construction and high-quality components, making it a reliable choice for industrial applications. Its 3-phase design provides added stability and ensures a consistent supply of power to your equipment.
With a wide range of sizes available, you can choose the UPS that best suits your power needs. Whether you need to protect a small workstation or a large industrial facility, the WTHD UPS has you covered.
Installation and maintenance of the WTHD UPS is quick and easy, thanks to its user-friendly design. The UPS comes with comprehensive instructions and support, so you can get up and running in no time.
With industry-leading reliability and performance, the WTHD’s Low Frequency Online Ups 3 Phase Ups is the ideal choice for businesses looking for a dependable power protection solution. Trust WTHD to keep your operations running smoothly and your equipment safe from power issues

Industrial Online UPS |
WTHD-U-3380 |
WTHD-U-33100 |
WTHD-U-33120 |
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Rated capacity - KVA/KW |
80/64 |
100/80 |
120/96 |
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Phase |
Phase |
Three-phase five-wire - 3L+N+PE |
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Main Input
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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
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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) |
+10%, +15%, +20% (can be set); -10%, -20%, -30% can be set |
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Input Frequency (Hz) |
50 (60) +10% |
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Output
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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) |
0ms |
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Overall efficiency |
≥93% |
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Overload capacity |
105%~110%: 60min to bypass; 110%~125%: 10 min to bypass;
125%"150%: 1 min to bypass; >150%: 10s to bypass
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Battery |
Battery voltage (Vac) |
384 (348/360 optional ) |
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Environment
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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 |
<55(1 meter="" from="" the="" device="">
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<60(1 meter="" from="" the="" device="">
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Other features
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Alarm function |
Output overload, mains abnormality, UPS failure, battery under voltage, 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
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Standard: RS232/RS485
Optional: SNMP/JBUS/MODBUS/Dry Contact
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Mechanical features
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Dimensions (W*D*H mm) |
450*810*1160 |
700*800*1500 |
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Net weight (kg) |
344 |
520 |
605 |
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Executive standard |
YD/T1095-2017 |









Shenzhen Weitu Hongda Industrial Co., Ltd. was established in 2015 with a registered capital of Capital 51 million. It is a national key high-tech enterprise and a specialized, Special new enterprise. We focus on new energy customization. Our products cover high-frequency UPS, industrial UPS, module UPS, EPS power supply, voltage regulator, solar inverter, etc. Outdoor energy storage, etc. Our products are widely used in data centers, medical Nursing, transportation and railways, the petrochemical industry, and other fields
We can provide OEM and ODM customization services according to customers' requirements
We look forward to your cooperation. Thank you




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.