Section 3 Available functions
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The following tables list all the functions available in the IED. Those functions that
are not exposed to the user or do not need to be configured are not described in this
manual.
3.1 Main protection functions
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Table 2: Example of quantities
2 = number of basic instances
0-3 = option quantities
3-A03 = optional function included in packages A03 (refer to ordering details)
C30 =1/2 CB application. For the pre-configured variants
IEC 61850 or
function name
ANSI Function description Line Differential
RED670
(Customized)
RED670 (B33)
RED670 (A42)
RED670 (B42)
RED670 (C42)
Differential protection
HZPDIF 87 High impedance differential
protection, single phase
0-3 3-A02 3-A02 3-A02 3-A02
REFPDIF 87N Restricted earth fault
protection, low impedance
0-2
L3CPDIF 87L Line differential protection for
3 CT sets, 2-3 line ends
0-1 1-A34
L6CPDIF 87L Line differential protection for
6 CT sets, 3-5 line ends
0-1 1-A04
LT3CPDIF 87LT Line differential protection for
3 CT sets, 2-3 line ends, in-
zone transformer
0-1 1
LT6CPDIF 87LT Line differential protection for
6 CT sets, 3-5 line ends, in-
zone transformer
0-1 1-A06
L4CPDIF 87L High speed line differential
protection for 4 CT sets, 2-3
line ends
0-1 1 1 1
LDLPSCH 87L Line differential protection
logic
0-1 1
LDRGFC 11REL Additional security logic for
differential protection
1 1 1 1 1
Impedance protection
ZMQPDIS,
ZMQAPDIS
21 Distance protection zone,
quadrilateral characteristic
0-7
ZDRDIR 21D Directional impedance
quadrilateral
0-2
Table continues on next page
1MRK 505 378-UEN Rev. K Section 3
Available functions
Line differential protection RED670 27
Commissioning manual
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