Is it possible to power-limit a Galaxy VS 50 kW UPS to operate safely on a 30 kW electrical infrastructure?

[Gregory_Jimenez]

 

Hello everyone,

I am looking for some technical advice or possible workarounds regarding an installation issue with a Galaxy VS UPS.

The Context: We originally quoted and ordered a 30 kW Galaxy VS UPS (GVSUPS30KB4GS). However, due to a shipping error, we received the 50 kW model (GVSUPS50KB4GS).

The Problem: The electrical infrastructure at the site—including piping, AWG wiring, and 60A breakers—is already fully installed and dimensioned specifically for the maximum input current of the 30 kW unit. According to the installation manual, the 50 kW UPS requires 100A breakers and a larger wire gauge (AWG 3/2).

It is important to note that the actual critical load connected to the UPS will remain exactly the same as originally planned, well within the 30 kW capacity.

My Question: Is there any official way to configure, power-limit, or restrict the 50 kW UPS via software/firmware (for example, limiting the battery charging current or capping the maximum input power) so that it can safely operate on the existing 60A infrastructure without risking tripping the breaker?

Replacing the UPS entirely (waiting for the correct 30 kW model) or replacing the newly installed wiring and breakers would cause a considerable delay and severely impact the end customer's timeline.

Has anyone faced a similar situation or can confirm if Schneider Electric supports a software-level limitation for this scenario?

Thank you in advance for your support and technical guidance.

[JamesOConnor]

The answer is NO. You cannot and should not attempt to mitigate this through software or firmware settings.

As a matter of professional practice and risk management, the electrical infrastructure must be dimensioned for the hardware installed, not the anticipated load. The Galaxy VS 50 kW unit requires a 100A breaker and corresponding wiring.

Attempting to force this onto a 60A circuit creates significant liability and operational risks:

• Breaker and Infrastructure Safety: Electrical codes and manufacturer specifications are not suggestions. The 60A circuit is undersized for the 50 kW unit, creating a high risk of nuisance tripping or, worse, thermal damage to the wiring during a high-demand event.

• Liability and Compliance: Relying on a software limit to bypass physical hardware requirements is a failure of proper engineering. If an electrical inspector identifies that the equipment exceeds the circuit's rated capacity, the installation will fail to meet code, creating legal and financial liability for you.

• Operational Reliability: Software limits are not a substitute for robust electrical design. The goal is to provide reliable power, and a system operating outside of its intended design specifications is inherently less stable and more prone to unexpected downtime.

The only responsible path is to initiate an immediate return or exchange with your supplier to receive the correct 30 kW model. Trying to "make it work" with the wrong hardware is an unnecessary business risk that jeopardizes the integrity of your client's infrastructure.