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On-line UPS


Az On-line dual conversion uninterruptible power supplies, also known as VFI UPSs, are the most protective types. These uninterruptible power supplies are suitable for all applications: industrial, telecommunications, IT or data center.

Their advantage is that the devices are powered by the inverter at all times, so there is no switching time and the devices do not perceive anything from the mains interference. Check out our products in the on-line UPS category!


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Cover Basic 1 1kVA/0,9kW On-line UPS
99 500 Ft+VAT=126 365 Ft
  pcs    Add to cart
Cover Core 1K 1kVA/0,9kW On-line UPS
159 917 Ft+VAT=203 094 Ft
  pcs    Add to cart
Riello SEP 1000 1kVA/0,9kW on-line UPS
172 962 Ft+VAT=219 662 Ft
  pcs    Add to cart
Cover Core ONE 2K 2kVA/2kW On-line UPS
206 500 Ft+VAT=262 255 Ft
  pcs    Add to cart
Riello SEP 1500 1,5kVA/1,35kW on-line UPS
226 969 Ft+VAT=288 251 Ft
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Riello SDH 1000 1kVA/0,9kW on-line UPS
269 019 Ft+VAT=341 654 Ft
  pcs    Add to cart
Cover Core ONE 3K 3kVA/3kW On-line UPS
276 833 Ft+VAT=351 578 Ft
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Riello SEP 2200 2,2kVA/1,98kW on-line UPS
285 904 Ft+VAT=363 097 Ft
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Riello SEP 3000 3kVA/2,7kW on-line UPS
319 511 Ft+VAT=405 778 Ft
  pcs    Add to cart
Riello SDH 1500 1,5kVA/1,35kW on-line UPS
344 675 Ft+VAT=437 738 Ft
  pcs    Add to cart
Cover Core 6K 6kVA/6kW On-line UPS
368 333 Ft+VAT=467 783 Ft
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Cover Core 10K 10kVA/10kW On-line UPS
500 000 Ft+VAT=635 000 Ft
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Riello SDU 4000 4kVA/3,6kW on-line UPS
588 367 Ft+VAT=747 226 Ft
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Cover JR 10 10kVA/10kW On-line UPS
969 167 Ft+VAT=1 230 842 Ft
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Cover JR 15 15kVA/15kW On-line UPS
1 136 667 Ft+VAT=1 443 567 Ft
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Riello Sentryum S3T 30 XTD T5 30kVA/30kW on-line UPS
3 423 000 Ft+VAT=4 347 210 Ft
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When do I need an on-line uninterruptible power supply?

  1. If the device is very sensitive and even a very short network outage or minimal network disruption can lead to downtime, data loss, or failure.
  2. If the system's power is greater than 10 ÷ 20kVA.

Why are these online UPSs less reliable?

Online uninterruptible components (semiconductors, capacitors, etc.) are subject to constant load and high temperatures, which negatively affects their service life. Of course, it's also a matter of scaling, a thoughtfully designed and well-built on-line uninterruptible power supply can be more reliable than a poor quality VFD UPS.