Functions
2.41 Analog Outputs
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
275
2.41 Analog Outputs
Depending on the variant ordered, the 7UM62 machine protection can have up to four analog outputs (plug-in
modules on ports B and D).
Starting from firmware version 4.62, the device features a universal analog output (type 2) for additional select-
ed measured values. An output ranging for instance from 4 to 20mA is thus possible with both positive and
negative values. The old analog output (type 1) for only positive values can still be used.
2.41.1 Functional Description
When configuring the functional scope, the user can specify which values are transmitted via these outputs.
The following table shows which type of analog output is possible for each measured value.
Table 2-13 A maximum of four of the following analog outputs are available:
The operational nominal values are those configured at address 251 UN GEN/MOTOR and 252 SN GEN/MOTOR
(see also section 2.5).
Measured value Description Scaling Type 1 Type 2
I1 Positive sequence current component in % based on I
N
generator X X
I2 Negative sequence current component in % based on I
N
generator X
IEE1 Sensitive earth current in % based on 100 mA X
IEE2 Sensitive earth current in % based on 100 mA X
U1 Positive sequence voltage component in % based on U
N
generator/√3XX
U0 Zero sequence voltage component in % based on U
N
generator/√3X
U03H 3. Harmonic voltage in % based on 0.1 U
N
generator/√3
(relatively small values)
X
|P| Absolute amount of real power in % based on S
N
generator X
|Q| Absolute amount of reactive power in % based on S
N
generator X
P Active power in % based on S
N
generator X
Q Reactive power in % based on S
N
generator X
S Apparent power in % based on S
N
generator X X
f Frequency in % based on the nominal frequency f
N
XX
U/f Overexcitation in % based on the nominal values of the
protected object
X
PHI Power angle in % based on 90° (0° to 360°) X
PHI Power angle in % based on 90° (–180° to + 180°)
((–180° = –200 % and + 180° = +200 %
X
|cos ϕ| Value of the power factor in % based on 1 X
cos ϕ Power factor in % based on 1 X
Θ
R
/Θ
R Trip
Rotor temperature in % based on the maximum permissible
rotor temperature
X
Θ
S
/Θ
S Trip
Stator temperature in % based on the tripping temperature X
RE REF Rotor earth resistance
(f
N
measuring method)
in % based on 100 kΩ X
RE REF 1-3Hz Rotor earth resistance
(1-3 Hz measuring method)
in % based on 100 kΩ X
RE SEF "Secondary" stator earth resistance in % based on 100 Ω X
To Next Page
Loading...
Need help?
General
