A BMS can show that a generator is running or that a UPS has a common alarm. Those points are useful, but they may not answer the questions an incident...

'How many hours will the generator run?' sounds like a simple fuel-tank question. In practice, the answer changes with electrical load, usable rather than nominal fuel, engine consumption, battery recharge,...

An automatic transfer switch may remain in one position for months, then be expected to detect a mains failure, initiate standby generation and transfer critical load within seconds. That low-frequency,...

Fans remove heat from power electronics, filters, transformers and other UPS components. If a fan slows, stops or cannot move enough air, internal temperature may rise. The UPS may generate...

A power failure at a wastewater pumping station is difficult at any time. During prolonged or intense rainfall, inflow may already be high, storage may be limited and access routes...

A data centre power outage is rarely solved by one team. Facilities must understand the electrical state, IT must protect services and data, security must control access, and leadership needs...

A standby generator can start promptly, reach normal speed and sound healthy—then trip, stall or become unstable as soon as the site transfers onto it. This is not unusual because...

When a site plans a new UPS, the starting question is often 'How big is the building load?' That can send the project in the wrong direction. A UPS is...

Introdution Replacing a commercial generator is not just a like-for-like equipment swap. A generator may sit quietly on site for years, but when it needs replacing, the project can affect...

A battery alarm does not always mean that a commercial UPS has stopped supplying power. It does mean that an important part of the system may no longer have the...

The words essential and critical are often used as if they have fixed meanings. In practice, a load can be critical on one site and deferrable on another. The correct...

A commercial UPS alarm can change as the system moves between operating states. If someone immediately silences, resets or clears it, useful evidence may disappear before an engineer can review...

Many organisations say their standby generator is 'serviced every year', but that phrase can hide important differences in scope. A routine engine service, a planned preventative maintenance programme, a load...

A power surge is a short-duration rise in voltage. It may be caused by lightning, switching on the supply network or equipment operating within the building. The event can last...

A manufacturing site can lose power for many reasons: a network fault, transformer failure, switchboard work, a failed standby generator or a planned maintenance shutdown. The effect is rarely limited...