Defence · Load banks · Naval dockyard
A 3 MW load bank that splits in two
Two identical trolley-mounted units test generator sets and on-board power, working together as one 3,000 kW bank or separately.
The challenge
What was needed
Ships and submarines must be tested under different load conditions, and diesel generator sets need testing at many load sizes. Large single-unit load banks are heavy and inflexible.
The solution
What we built
A 3,000 kW AC/DC load bank split into two identical units on trolleys that can move at up to 20 km/h. Placed side by side, one unit acts as master and the other follows, so the pair behaves as a single 3,000 kW bank; the units can also be used independently. Each is controlled by an internal PLC and HMI, with a remote-operation option, and is fully tested at the factory before dispatch.
Equipment
Key figures
| Total rating | 3,000 kW (2 identical units) |
|---|---|
| AC | 380–460 V and 690 V, 50/60 Hz |
| DC | 220–360 V |
| Control | PLC and HMI, remote option |
| Mobility | Trolley-mounted, up to 20 km/h |
| Environment | Humidity, rain and dust; up to 50 °C without derating |
Results
- One design covers both large and small test loads
- Portable between test locations on its own trolleys
Products used
Products in this case study
Load banks and test equipment
AC and DC load banks
Resistive AC/DC and resistive-inductive AC load banks up to 4.7 MW for testing ships' power, generators and batteries.
10 kW to 4.7 MW, resistive/inductive
Load banks and dischargers
Resistive load banks and dischargers
Controllable resistive load banks and closed-loop battery dischargers for testing power sources and discharging batteries.
Dischargers: 24–220 V, up to 2,000 A; MW load bank range: 10 kW to 4,700 kWGet in touch
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