ABB Relion 670 series - Full-Scheme Distance Measuring, Mho Characteristic ZMHPDIS (21); Functionality; Identification; Technical Data

7.2.7 Technical data
M16024-1 v11
Table 98: FDPSPDIS (21) technical data
Function Range or value Accuracy
Minimum trip current (5-500)% of IBase ±1.0% of I
n
at I ≤ I
n
±1.0% of I at I > I
n
Reactive reach, positive
sequence
(0.50–3000.00) Ω/phase ±2.5% static accuracy
±2.0 degrees static angular accuracy
Conditions:
Voltage range: (0.1-1.1) x V
n
Current range: (0.5-30) x I
n
Angle: at 0 degrees and 85 degrees
Resistive reach, positive
sequence
(0.10–1000.00) Ω/phase
Reactive reach, zero sequence (0.50–9000.00) Ω/phase
Resistive reach, zero sequence (0.50–3000.00) Ω/phase
Fault resistance, phase-to-
ground faults, forward and
reverse
(1.00–9000.00) Ω/loop
Fault resistance, phase-to-
phase faults, forward and
reverse
(0.50–3000.00) Ω/loop
Load encroachment criteria:
Load resistance, forward and
reverse
Safety load impedance angle
(1.00–3000.00) Ω/phase
(5-70) degrees
Reset ratio 105% typically -
7.3 Full-scheme distance measuring, Mho characteristic
ZMHPDIS (21)
SEMOD154227-1 v4
7.3.1 Identification
SEMOD154447-2 v2
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE
C37.2 device
number
Full-scheme distance protection,
mho characteristic
ZMHPDIS
S00346 V1 EN-US
21
7.3.2 Functionality
SEMOD175459-4 v12
The numerical mho line distance protection is an up to four (depending on product variant) zone
full scheme protection for back-up detection of short circuit and ground faults.
1MRK 502 066-UUS B Section 7
Impedance protection
215
Technical manual