Deif GPC-3 Designers Reference Handbook

Diagram A: high droop setting
In this diagram, the illustrated frequency variation gives a change in the load. This is marked as ΔP.
∆ P
f
NOM
Freq (Hz)
P(kW)
This can be used if the generator must operate base-loaded.
Diagram B: low droop setting
In this diagram, the load change (ΔP) is larger than before. This means that the generator will vary more in
loading than with the higher droop setting.
∆ P
f
NOM
Freq (Hz)
P(kW)
This can be used if the generator must operate as a peak load machine.
Load sharing with older types of gensets
Droop mode can be used when a new genset is installed in an installation where old gensets are installed
and they operate in droop mode. Then it can be preferred to install the new genset and operate it in droop
mode in order to make equal load sharing with the existing gensets.
GPC-3 DRH 4189340587 UK
Functional descriptions
DEIF A/S Page 11 of 122

Deif GPC-3 Specifications

General

Brand	Deif
Model	GPC-3
Category	Controller
Language	English