Siemens SIPROTEC 4 7SJ61 - Display of Measured Values; Transfer of Measured Values

Display of Measured Values
Table 2-16 Conversion formulae between secondary values and primary/percentage values
Measured
Values
sekun-
dary
primary %
Ι
A
, Ι
B
, Ι
C
,
Ι
1
, Ι
2
Ι
sec.
Ι
E
= 3 ·Ι
0
(calculated)
Ι
e sec.
Ι
N
= measured
value of Ι
N
-input
Ι
N sec.
Ι
Ns
Ι
Ns sec.
Table 2-17 Legend for the conversion formulae
Parameter Address Parameter Address
CT PRIMARY
204
Ignd-CT PRIM
217
CT SECONDARY
205
Ignd-CT SEC
218
FullScaleCurr.
1102
Depending on the type of device ordered and the device connections, some of the operational measured
values listed below may not be available.
The ground current Ι
N
is either measured directly or calculated from the conductor currents.
[erdstrom-020315-wlk, 1, en_US]
In addition, the following may be available:
•
Θ/Θ
TRIP
thermal measured value of overload protection value for stator in % of the trip initiating over-
temperature
•
Θ/Θ
L TRIP
thermal measured value of restart inhibit (rotor winding),
•
Θ
Restart
restarting limit of restart inhibit,
•
T
Reclose
total time, before the motor can be restarted,
•
Θ
RTD 1
to Θ
RTD 12
temperature values at the RTD box.
The calculation of the operational measured values is also performed during a fault. The values are updated in
intervals of > 0.3 s and < 1 s.
Transfer of Measured Values
Measured values can be transferred via the interfaces to a central control and storage unit.
The measuring range in which these values are transmitted depend on the protocol and, if necessary, addi-
tional settings.
Protocol
Transmittable measuring range, format
IEC 60870-5-103 0 to 240 % of the measured value.
2.17.3.1
2.17.3.2
Functions
2.17 Auxiliary Functions
206 SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016