Generator protection group covers all you need to protect your generator against overload protection. There is a variation of short circuit guards, watt and reactive overload and reverse power guards, voltage/frequency guards and transient protection.
Check the individual datasheets to find the best suitable product for your application.
A tip is the new MAG10x that combines overload, reverse power and short circuit in the same unit.
There is also the combined volt and frequency guard for detecting abnormal volt/Hz operation on the network.
The TSU17x is a transient protection. Every time a generator trips before it is unloaded a voltage spike is generated and have a potential to damage any equipment connected to the generator or the generator windings. The TSU17x absorbs this damaging energy and limit the voltage peak level.