hager h3+, Инструкция по эксплуатации системы связи

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6LE005550A
Function of the Energy trip unit
3.3 Measurement function
3.3.11
Accuracy of measurements
IEC convention
P < 0 P > 0
Q > 0
Ii
Capacitive
(lead or ahead)
I
Inductive
(lag or delay)
PF < 0
PF > 0
cos > 0
Q < 0
III
Inductive
(lag or delay)
IV
Capacitive
(lead or ahead)
PF < 0
PF > 0
cos > 0
The IEC convention is indicated when the equipment downstream of the circuit
breaker may operate in turn as a receiver and as a generator.
IEEE convention
P < 0 P > 0
Q > 0
Ii
Capacitive
(lead or ahead)
I
Inductive
(lag or delay)
PF > 0
PF < 0
cos < 0
Q < 0
III
Inductive
(lag or delay)
IV
Capacitive
(lead or ahead)
PF < 0
PF > 0
cos > 0
PF sign convention setting Default setting
IEC - IEEE IEC
Setting the averaged value over interval (Demand value) parameters
This parameter is used to configure the length of the integration interval and the type
of integration in order to perform the averaged value (Demand value) calculations
correctly.
Calculating the averaged values over a specific interval involves integrating the
currents and powers over a time interval (see § 3.3.7).
Request Period Setting Default setting
5 – 60 min. (increments of 1 min.) 30 min.
Request Mode Setting Default setting
Fixed – Sliding – Sync. Bus Fixed
Note
The parameter "Request Period" is not taken into account in the average value
calculation if the "Request Mode" setting (type of integration interval) is Sync. Bus
(Synchronised integration interval).
The Energy trip unit complies with the requirements of standard IEC 61557-12
Edition 1:
- Class 0.5 for measuring currents and voltages,
- Class 1 for measuring active energy.
The accuracy of each measurement is defined, in accordance with IEC 61557-12,
for a supply within normal ambient temperature conditions of 23 °C ± 2 °C.