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Parameter 274 ATEX100 allows compliance with PTB requirements (special require-
ATEX100
ments in Germany) for thermal replicas. If this parameter is set to YES, all thermal rep-
licas of the 7UM61 are stored on auxiliary power supply failure. As soon as the supply
voltage returns, the thermal replicas continue operating with the stored values. If the
parameter is set to NO, the calculated overtemperature values of all thermal replicas
are reset to zero on auxiliary power supply failure.
Address 280 is used to set the minimum time TMin TRIP CMD the tripping contacts
Command Duration
will remain closed. This setting applies to all protective functions that initiate tripping.
Address 281 BkrClosed I MIN corresponds to the threshold value of the integrated
Current Flow Moni-
toring
current flow monitoring feature. This setting is used for the elapsed-time meter and the
overload protection. If the set threshold current is exceeded, the circuit breaker is con-
sidered closed and the power system is considered to be in operation. In the case of
overload protection, this criterion distinguishes between standstill and motion of the
machine to be protected.
2.3.2
Settings
Addresses which have an appended "A" can only be changed with DIGSI, under Ad-
ditional Settings.
The table indicates region-specific presettings. Column C (configuration) indicates the
corresponding secondary nominal current of the current transformer.
Addr.
Parameter
204
CT ANGLE W0
210
CT Starpoint
211
CT PRIMARY
212
CT SECONDARY
213
FACTOR IEE
221
Unom PRIMARY
222
Unom SECONDARY
223
UE CONNECTION
224
FACTOR UE
225A
Uph / Udelta
270
Rated Frequency
271
PHASE SEQ.
272
SCHEME
7UM61 Manual
C53000-G1176-C127-3
C
Setting Options
-5.00 .. 5.00 °
towards machine
towards starpt.
10 .. 50000 A
1A
5A
1.0 .. 300.0
0.10 .. 400.00 kV
100 .. 125 V
neutr. transf.
broken delta
Not connected
any VT
1.0 .. 2500.0
1.00 .. 3.00
50 Hz
60 Hz
L1 L2 L3
L1 L3 L2
Busbar
Unit transf.
2.3 Power System Data 1
Default Setting
0.00 °
Correction Angle CT W0
towards machine
CT Starpoint
500 A
CT Rated Primary Current
1A
CT Rated Secondary
Current
60.0
CT Ratio Prim./Sec. Iee
6.30 kV
Rated Primary Voltage
100 V
Rated Secondary Voltage
(Ph-Ph)
neutr. transf.
UE Connection
36.4
VT Ratio Prim./Sec. Ue
1.73
Matching Ratio Ph.-VT to
Broken-Delta-VT
50 Hz
Rated Frequency
L1 L2 L3
Phase Sequence
Busbar
Scheme Configuration
Comments
37
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