Directional Three-Independent-Phase Directional Overcurrent Protection Dph3Xpdoc - ABB RELION 620 Series Technical Manual

Protection functions
Characteristic
Retardation time
Operate time accuracy in
definite time mode
Operate time accuracy in in-
verse time mode
Suppression of harmonics
4.1.3.12 Technical revision history
Table 291: DPHHPDOC Technical revision history
Technical revision
B
C
D
E
Table 292: DPHLPDOC Technical revision history
Technical revision
B
C
D
E
4.1.4 Directional three-independent-phase directional
overcurrent protection DPH3xPDOC
4.1.4.1 Identification
Function description
Directional three-independent-
phase directional overcurrent
protection, low stage
Directional three-independent-
phase directional overcurrent
protection, high stage
3 Start value = 2.5 × I
Maximum
298
Value
<35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
DFT: -50 dB at f = n × f
IEC 61850
identification
DPH3LPDOC
DPH3HPDOC
Start value multiples in range of 1.5...20
,
n
, where n = 2, 3, 4, 5,...
n
Change
Added a new input
NON_DIR
Step value changed from 0.05 to 0.01 for the
Time multiplier setting.
Monitored data VMEM_USED indicating volt-
age memory use.
Internal improvement.
Change
Added a new input
NON_DIR
Step value changed from 0.05 to 0.01 for the
Time multiplier setting.
Monitored data VMEM_USED indicating volt-
age memory use.
Internal improvement.
IEC 60617 ANSI/IEEE
identification C37.2 device
number
3_3I> -> 67-1_3
3I_3>> -> 67-2_3
1MRS757644 H
620 series
Technical Manual