24.3.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Measured value expander block RANGE_XP - -
24.3.2 Application
The current and voltage measurements functions (CVMMXN, CMMXU, VMMXU and
VNMMXU), current and voltage sequence measurement functions (CMSQI and VMSQI)
and IEC 61850 generic communication I/O functions (MVGAPC) are provided with
measurement supervision functionality. All measured values can be supervised with four
settable limits, that is low-low limit, low limit, high limit and high-high limit. The measure
value expander block ( RANGE_XP) has been introduced to be able to translate the
integer output signal from the measuring functions to 5 binary signals, that is below low-
low limit, below low limit, normal, above high-high limit or above high limit. The output
signals can be used as conditions in the configurable logic.
24.3.3 Setting guidelines
There are no settable parameters for the measured value expander block function.
24.4 Parameter setting groups
24.4.1 Application
Six sets of settings are available to optimize IED operation for different power system
conditions. By creating and switching between fine tuned setting sets, either from the local
HMI or configurable binary inputs, results in a highly adaptable IED that can cope with a
variety of power system scenarios.
Different conditions in networks with different voltage levels require highly adaptable
protection and control units to best provide for dependability, security and selectivity
requirements. Protection units operate with a higher degree of availability, especially, if
the setting values of their parameters are continuously optimized according to the
conditions in the power system.
Operational departments can plan for different operating conditions in the primary
equipment. The protection engineer can prepare the necessary optimized and pre-tested
settings in advance for different protection functions. Six different groups of setting
1MRK 506 369-UUS - Section 24
Basic IED functions
Line distance protection REL670 2.2 ANSI 897
Application manual
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