hager hw+ - Page 94

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Measurement functions
6.9 Measuring power factors
IEC convention
IEEE convention
P < 0 P > 0
Q > 0
II Capacitive (lead) I Inductive (lag)
PF < 0
cos < 0
PF > 0
cos > 0
Q < 0
III Inductive (lag) IV Capacitive (lead)
PF < 0
cos < 0
PF > 0
cos > 0
The IEC convention is indicated when the equipment downstream of the circuit breaker can
operate in turn as a receiver and as a generator. It is indicated for countries using the IEC
standards.
The IEEE convention is indicated when the equipment downstream of the circuit breaker
operates exclusively as a receiver or exclusively as a generator. It is indicated for all countries
using the IEEE standard.
In this case, the + sign designates the capacitive behaviour and the - sign designates the
inductive behaviour.
N.B.
The configuration of the power factors and cos sign convention is done from the sentinel
Energy display, the panel display and the Hager Power setup software.
P < 0 P > 0
Q > 0
II Capacitive (lead) I Inductive (lag)
PF > 0
cos > 0
PF < 0
cos < 0
Q < 0
III Inductive (lag) IV Capacitive (lead)
PF < 0
cos < 0
PF > 0
cos > 0