Measurement of alternating
quantities
ABB Network Partner AB
1MRK 580 159-XEN
Page 7 - 23
Version 1.0-00
You can enter the user-defined name for each of the 15 analogue measur-
ing quantities. Each name can consist of up to 13 characters and can be set
under the submenu:
Configuration
AnalogInputs
U1 (U2,..U5, I1,..,I5, U, I, P, Q, f)
The names of first 10 quantities automatically appear in the REVAL eval-
uation program for each reported disturbance.
You can set the rated primary values of the corresponding voltage and
current instrument transformers for the first 10 quantities under the same
submenu.
You must use the SMS and the CAP 531 configuration tool to set all
remaining parameters that are related to different alternating measuring
quantities.
Separately set all monitoring operating values and the hysteresis directly
in the basic units of the measured quantities for each channel and for each
quantity.
Set the dead-band limits directly in the corresponding units of the
observed quantity for the:
• Amplitude dead-band supervision
• Integrating dead-band supervision
You must observe the dependency of the IDBS [mAs], which corresponds
to this equation:
where:
is a set operating value for IDBS in corresponding unit
is a reading frequency. It has a constant value of 1Hz
time between two samples in s
The setting table lists all setting parameters with additional explanation.
IDBS
IDeadB
ReadFreq
-------------------------- IDeadB ts⋅==
IDeadB
ReadFreq
ts
1
ReadFreq
--------------------------=
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