Powering healthcare digital imaging equipment

[Hectormp]

Hello

Does anybody has any experience with this equipment GVSUPS20K100B3H? can you share what type of equipment are you protecting? This UPS is designed to power loads with high peak currents and specially X-Ray generators, It includes a transformer. Have you seen any information on the principal of operation? how does the transformer helps supply the peak current?

Thank you

[RusenGeorge]

Hi Hector,

This UPS is a unique combination of 80 kVA UPS with a 20 kVA Input Transformer (480V In, 400V Out) to handle peak load current (350 Amps) in an optimized transformer design. Includes Input and Output disconnect on the bottom alongside the transformer.

Indeed the main application segment is the healthcare one mainly X-ray machines or other equipment with a permanent load below 20 kW but a high peak load (20-80 kW) for a few minutes.

The system load profiles for medical imaging systems are highly dependent on the area that is being scanned and how the body is scanned.

In the case of an X-ray, the system load profile might look like this:

Power Consumption X-Ray System
Mode	Average Power (KVA)	Peak Power (KVA)
Standby including movements	10 kVA	10
Standby including movements + Low-load Fluoroscopy	14	17
Standby including movements + Exposure	50 (~5 sec)	85 kVA

Also to answer your last question, Input transformers in UPS systems offer some inherent protection against voltage fluctuations and spikes by their design. Transformers have inductive reactance, which resists rapid changes in current. When a voltage spike or transient occurs, the transformer's inductive properties can limit the rate of voltage change, offering some mitigation against sudden voltage surges. However, it's important to note that while transformers provide certain levels of protection, they may not handle extreme voltage spikes or surges on their own. That's why in this case they're paired with a UPS that contains filtering, surge suppressing, voltage regulation, etc.

P.S. You might want to have a look at GVSOPT036 & GVSOPT037 which completes the healthcare solution.

Hope that answers your question,

George