55
Matrix
Modules
HT relay
(Ir+Ly+Ib+In-If)*r
Id=If*r
If
2
If
1
F2
ACB
F1
mer
X
∆
- Y
REF Zone
CB
r
= ct ratio
Id
= deflection current
If1
= fault current @ F1
If2
= Fault current @ F2
Case 1.
EF inside the restricted zone (F1)
During EF within the zone, current flows back to Xmer star point through neutral sensing CT. The REF
module will give trip command to the breaker depending on pickup value.
Case 2.
EF outside the restricted zone (F2)
For EF outside the zone, fault current flows through phase CT & neutral CT in opposite direction
preventing the nuisance tripping from REF.
REF
Trip command
to HT Relay
?
56
Matrix
Modules
A
N
A
L
O
G
O
U
T
P
U
T
(
A
O
)
M
O
D
U
L
E
Analog module can be seen as metering option to other panel display
meters.
Four different outputs can be configured for voltage metering or current
metering with analog signal output in range of 4-20mA to which analog
ammeter and voltmeter can be connected.
4mA corresponds to zero current and voltage while 20mA corresponds
to 1.5 times the set I-frame value of current or 1.5 times set Vn value in
Matrix release.
AO module communicates on CAN bus protocol with the Matrix
Protection and control Unit.
SIC
IN
TE
R C
O
N
N
EC
TIO
N
CAN-H
CAN-L
AS+
AS-
IP1 IP2 IP3 IP4 COM
C
A
N
C
O
M
M
U
N
IC
A
TIO
N
B
U
S
4 ANALOG O/PS
AO1
AO2 AO3
AO4
RJ
4
5 C
A
BL
E
Current
I1 : 430A
I2 : 430A
I3 : 430A
Содержание OMEGA
Страница 2: ...Stabilise systems with technology ...
Страница 4: ...Change course quickly ...
Страница 6: ...Match performance with prudence ...
Страница 8: ...Adopt technological brilliance ...
Страница 10: ...Keep an eye on upkeep ...
Страница 26: ...Matrix Protection Control Units T UW M X4 5 ...
Страница 70: ...Accessories ...
Страница 84: ...Control Circuit Wiring ...
Страница 92: ...Mounting Termination ...
Страница 135: ...SP 50567 R5 ...