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Fault Managed Power Systems (FMPS)


Class 4 Power, also known as Fault Managed Power Systems, allows you to safely transfer higher loads across significant distances. This new classification opens up possibilities for an abundance of Power over Ethernet applications.

DES is a provider of Digital Electricity™, the FMPS platform by Voltserver.

Gain the safety and flexibility of
low-voltage cabling with the power and distance capabilities of AC.​

Class 4 Power, or Fault Managed Power Systems (FMPS), can carry up to 450V yet is both safe to handle and poses minimal fire hazard. This unique blend of power and safety is the result of an innovative electrical transmission system that packetizes the power with a steady stream of safety data.

Any large venue, like stadiums, factories, airports, campuses, can benefit from the ability to manage their low voltage circuitry in-house. Additionally, any venue with many dense wireless applications could also benefit, since all those endpoints are backed up on a single UPS, saving you valuable space in your building.

The Industry-Leading FMPS Platform

Digital Electricity™

The VoltServer Digital Electricity™ platform converts energy into packetized units that combine both power and safety data. The result is a steady stream of hundreds of packets per second that is continuously monitoring for faults, such as improper wiring, a short circuit, or an obstruction. The transmitter recognizes the condition in a fraction of a second and halts the transmission of packets. 

The platform supports both AC and DC loads, first levelling the power to a DC stream during the packetized transmission, and then at the receiving end, transforming the energy to the requirements of the output destination. 

Fault Managed Power & Digital Electricity Applications

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Wireless Densification

Venues of all sizes struggle to keep up with customers’ demands for connectivity. But not all deployment architectures are equipped with resilient power for wireless connectivity, leading to time-consuming and expensive electrical overhauls. Whether it’s 4G LTE, 5G, CBRS, or Wi-Fi, your infrastructure has to keep visitors connected. Instead of relying on traditional, underpowered energy solutions, packetized power provides top-notch connectivity where it is needed for optimal signal coverage and capacity.

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Facility Infrastructure 

& Network Upgrades

The needs of a facility and your network are constantly changing, whether it is facility expansion or renovation, or the network must expand to meet the need of IoT devices.


A flexible power solution can help you save on cabling and installation for applications that require power and data outside traditional Power over Ethernet boundaries. Moves, adds, and changes can be completed by low-voltage professionals or even in-house staff using the modularity and scalability of the platform.

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Indoor Agriculture

& Grow Facilities

Replacing sunlight accounts for nearly 50 percent of the entire cost of an indoor vertical farm. Of that, 70 percent goes to power distribution. Packetized power installation is typically 20 percent less than conventional electricity since it avoids the need for conduit, GFCIs and certified labor. 


As your cultivation strategies change, the flexible cable that can be easily installed and dynamically re-configured. Plus, it is inherently safe – especially important for wet environments – and classified by the National Electrical Code (NEC) as a Limited Power Source according to Article 725 and certified to IEC 62368-1.  


Fault Managed Power Systems:

  • Move Significant Power
  • Over Significant Distance
  • Using Low Voltage Cable
  • Ensuring Utmost Safety 
  • Achieving Faster Installs, Efficient Maintenance & Remote Management
Download White Paper: Best Applications for Digital Electricity™
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