Load bank testing you can trust
When a power outage hits, assumptions don’t help. Applying a controlled electrical load is how organisations verify performance under demand so you can confirm: stable operation, accurate power output and cooling performance before it’s critical.
Power Prove designs and manufactures load banks to prove the performance of power generation equipment and wider power systems, from standby generators to uninterruptible power supply (UPS) and battery applications.
Will your backup power actually work when it matters?
Choose your load bank
AC load banks
AC load banks are used for generator proving, commissioning support and maintenance . Choose when you need controlled loading and clear visibility.
Best for: standby generators, UPS load validation
DC load banks
DC load banks provide controlled discharge for batteries and DC power systems, helping you confirm performance and stability under defined load conditions.
Best for: battery discharge testing, DC power system validation
Radiator-mounted load banks
Radiator-mounted load banks provide an integrated solution for generator packages requiring providing onboard ballast loading capability.
Best for: packaged generators, ballast loading, fixed and constrained installations
Customised solutions
Customised load banks built around your specification: voltage, enclosure, cooling method, connection interfaces and control preferences.
Best for: Unique site requirements, unusual voltages, mechanical constraints
Why Power Prove?
As a division of high-power resistor manufacturer Cressall, Power Prove builds load banks engineered for accuracy, flexibility and long‑term reliability. Every unit is tested before it leaves our Leicester facility.
What this means in practice:
Proven accuracy and reliable testing: every unit is system-verified for consistent AC/DC performance
Configured to your application: portable, fixed and custom load banks build around real site requirements
Controlled and documented testing: Digital control, data logging and precise load management to support repeatable test results
Engineer-led support:
practical guidance for specifying, installing and using load banks safely and correctly
What is load bank testing?
Load bank testing is the controlled application of an artificial electrical load to a power source to verify performance under demand. A load bank safely simulates real operating conditions, so the system can be proven before it is relied on.
Load bank testing is used to confirm:
· True generator power output
· Stability of standby generators under load
· Reliability of uninterruptible power supply systems
· Overall behaviour of critical power systems
Why load bank testing matters
Backup systems can run lightly loaded for long periods. When you don’t regularly test under meaningful load, problems can remain hidden until the worst moment.
A correct load profile can support preventative maintenance and risk reduction by helping to:
· Minimise unburned fuel build‑up and reduce wet stacking risk in diesel generators
· Improve diesel generator performance when correctly loaded
· Validate the generator cooling system under stress
· Identify faults that only appear at high load
Intelligent control and reporting with Digiload
When you need deeper visibility and repeatable testing, Power Prove offers Digiload: a digital load bank control system designed for modern testing workflows. Digiload supports touchscreen control, precision measurement and data logging for quick access to results, with options for networking multiple load banks.
What we need to quote the right load bank
To recommend and quote the best‑fit unit, we typically need:
Voltage rating
(AC or DC, frequency)
Phase(s)
(1‑phase / 3‑phase when AC)
Load power rating
(kW) and any step requirements
Optional accessories
(e.g., remote control, network capability, covers, supply cables)
Any site constraints
(space, portability,
indoor/outdoor use, environmental conditions)
Don’t wait for failure, prove performance now
Most power failures happen when full demand is applied, not when equipment is idle. Load bank testing removes uncertainty and replaces it with proof, using the right load bank for your system.
Or contact us directly:
+44(0) 116 249 1722 sales@powerprove.com
Evington Valley Road Leicester, United Kingdom LE5 5LZ