Signals - ABB RELION REX640 Technical Manual

1MRS759142 C
4.3.6.8
REX640
Technical Manual
Based on Equation 149
checked.
A
25000
U ( 5900
= ⋅ Ω
max
2000
GUID-63F650BB-E811-49BC-A9F1-9C6A70277FFB V1 EN
˘
u 2 2 436 V ( 74000
= ⋅ ⋅ ⋅
GUID-A984073D-E837-4675-A243-F9859C7AEFEB V1 EN
The voltage-dependent resistor (one for each phase) is needed in this case as the
voltage during the fault is higher than 2 kV.
The leakage current through the VDR at the stabilizing voltage can be available from
the VDR manual, assuming that to be approximately 2 mA at stabilizing voltage
Iu A
≈ 0 002 .
GUID-B506DE6D-E233-4618-908B-63DFB0A8F436 V1 EN
The sensitivity of the protection can be recalculated taking into account the leakage
current through the VDR as per
I 2000 0 035 ( . A 10 0 0034
= ⋅ +
prim
GUID-40C03CD2-894B-4BBC-8388-BD58F5794FA7 V1 EN

Signals

Table 623: HIAPDIF Input signals
Name Type
I3P SIGNAL
BLOCK BOOLEAN
Table 624: HIBPDIF Input signals
Name Type
I3P SIGNAL
BLOCK BOOLEAN
Table 625: HICPDIF Input signals
Name Type
I3P SIGNAL
BLOCK BOOLEAN
and Equation 150, the need for voltage-dependent resistor is
15 75 . 1 00 . ) 74 0
+ Ω + Ω ≈
V 436 V ) 16 0 . kV
− ≈
Equation 152.
. A 0 002 . A ) 142
⋅ + ≈
Default Description
- Three-phase currents
0=False Block signal for activating the blocking mode
Default Description
- Three-phase currents
0=False Block signal for activating the blocking mode
Default Description
- Three-phase currents
0=False Block signal for activating the blocking mode
Section 4
Protection functions
. kV
A
(Equation 149)
(Equation 150)
(Equation 151)
(Equation 152)
699