Siemens 6MD86 - Settings

Parameter: Tilt power characteristic
•
Recommended setting value (_:6331:103) Tilt power characteristic = +20°
The Tilt power characteristic parameter is used to incline the pickup characteristic. In the example
(see Figure 7-175), the power characteristic has a tilt of 20°. Set the Tilt power characteristic param-
eter to +20° (for a definition of the sign, see Figure 7-174).
Parameter: Dropout delay
•
Recommended setting value (_:6331:7) Dropout delay = 20 ms
The Dropout delay parameter maintains the pickup even if the measured value drops momentarily below
the threshold value. A delay is required for very low pickup values to prevent a so-called chattering of the
function. In the example, the setting value is 20 ms.
Parameter: Operate delay
•
Recommended setting value (_:6331:6) Operate delay = 100 ms
The Operate delay must be set for the specific application. In the example, a setting value of 100 ms has
been selected.
Settings
Addr. Parameter C Setting Options Default Setting
Power P> 1
_:6241:1 Power P> 1:Mode
•
off
•
on
•
test
off
_:6241:2 Power P> 1:Operate &
flt.rec. blocked
•
no
•
yes
no
_:6241:104 Power P> 1:Measured value
•
power of phase A
•
power of phase B
•
power of phase C
•
positive seq. power
positive seq.
power
_:6241:3 Power P> 1:Threshold -200.0 % to 200.0 % 80.0 %
_:6241:101 Power P> 1:Dropout ratio 0.90 to 0.99 0.95
_:6241:103 Power P> 1:Tilt power char-
acteristic
-89.0 ° to 89.0 ° 0.0 °
_:6241:7 Power P> 1:Dropout delay 0.00 s to 60.00 s 0.00 s
_:6241:6 Power P> 1:Operate delay 0.00 s to 60.00 s 1.00 s
Power P< 1
_:6271:1 Power P< 1:Mode
•
off
•
on
•
test
off
_:6271:2 Power P< 1:Operate &
flt.rec. blocked
•
no
•
yes
no
_:6271:105 Power P< 1:Measured value
•
power of phase A
•
power of phase B
•
power of phase C
•
positive seq. power
positive seq.
power
_:6271:3 Power P< 1:Threshold -200.0 % to 200.0 % 5.0 %
_:6271:101 Power P< 1:Dropout ratio 1.01 to 1.10 1.05
_:6271:103 Power P< 1:Tilt power char-
acteristic
-89.0 ° to 89.0 ° 0.0 °
7.22.8
Protection and Automation Functions
7.22 Power Protection (P,Q), 3-Phase
SIPROTEC 5, High-Voltage Bay Controller, Manual 859
C53000-G5040-C015-9, Edition 11.2017