ABB Relion 670 series, Technical Reference Manual

Page: 266 / 1232

Table 121: ZMHPDIS (21) Group settings (advanced)
Name Values (Range) Unit Step Default Description
OffsetMhoDir Non-directional
Forward
Reverse
- - Non-directional Direction mode for offset mho
OpModetPG Disabled
Enabled
- - Enabled Operation mode Disable/ Enable of Zone
timer, Ph-G
OpModetPP Disabled
Enabled
- - Enabled Operation mode Off / On of Zone timer, Ph-ph
6.4.6 Technical data
Table 122: ZMHPDIS (21) technical data
Function Range or value Accuracy
Number of zones with selectable
directions
Max 5 with selectable direction -
Minimum operate current (10–30)% of I
Base
-
Positive sequence impedance,
phase-to-ground loop
(0.005–3000.000) W /phase ± 2.0% static accuracy
Conditions:
Voltage range: (0.1-1.1) x V
n
Current range: (0.5-30) x I
n
Angle: 85 degrees
Positive sequence impedance
angle, phase-to-ground loop
(10–90) degrees
Reverse reach, phase-to-ground
loop (Magnitude)
(0.005–3000.000) Ω/phase
Magnitude of ground return
compensation factor KN
(0.00–3.00)
Angle for ground compensation
factor KN
(-180–180) degrees
Dynamic overreach <5% at 85 degrees measured
with CVT’s and 0.5<SIR<30
-
Timers (0.000-60.000) s ± 0.5% ± 10 ms
Operate time 20 ms typically (with static
outputs)
-
Reset ratio 105% typically -
Reset time 30 ms typically -
Section 6
1MRK505222-UUS C
Impedance protection
260
Technical reference manual