Retail shop: fully running through a power cut with a 3 kVA Online UPS

A modern retail store with increased power continuity needs.

As we saw in a previous article, in a mid-size retail store — with a physical sales floor, a small storeroom and online ordering — uninterrupted operation is a critical factor. Even a short power outage can:

• interrupt transactions,
• cause data loss,
• leave the premises without security and basic lighting.

For this reason, identifying and correctly sizing the critical loads is the first step.

Critical store loads (example figures)

In a modern retail store, the critical loads can be broken down as follows:

• Server: 350 W
• Router / Firewall: 40 W
• NAS (local storage): 100 W
• NVR (CCTV): 60 W
• 48-port PoE switch (cameras / VoIP): 180 W
• 24-port switch: 30 W
• EMS / auxiliary: 30 W
• 3 computers + monitors: 3 × 300 W
• POS + thermal printers: 150 W
• LED lighting (total): 150 W

The total critical load comes to approximately 2,000 W.

Why a 3 kVA Online UPS?

Based on the profile above, a 3 kVA Online UPS solution such as the Tescom Prime 3kVA, correctly sized for this specific load:

• keeps transactions and customer service going during the first, most critical minutes of an outage,
• gives the store manager the time needed to assess the fault and decide what to do (continue operating or perform a controlled shutdown),
• allows a controlled shutdown of the server and workstations, while keeping the network, the CCTV system, telephony and basic lighting running.

In this way, the business continues to operate in an organized, safe and professional manner, even during a complete loss of power, with a clearly limited operational and financial impact.

What does this mean in practice?

To protect this environment, we recommend a 3 kVA Online UPS solution, designed to provide the required runtime according to the needs and requirements of each project. If you are looking for something especially reliable with even longer runtime, Tescom offers the Tescom Lion 3kVA, a new-technology UPS with LiFePO4 batteries.

In practice, this means that during a sudden power outage:

• the store continues serving customers normally for the first critical minutes,
• POS transactions are completed normally,
• the manager has time to decide whether the fault is momentary or prolonged.

If the outage lasts longer:

• a controlled shutdown is carried out on the workstations and the server, so that there is no data loss or damage to equipment,
• the UPS continues to power the network equipment, the camera system, voice communication (VoIP) and basic lighting,
• the store remains safe and operational until power is restored.

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Choosing and sizing an Online UPS correctly is not just a technical detail; it is a critical part of overall business continuity for every modern retail store. Request a FREE analysis of your needs.