Siemens siprotec 7SA6, Руководство пользователя

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Functions
6-271
7SA6 Manual
C53000-G1176-C156-2
The values for the negative fault location and the overflow must be set as large as pos-
sible since the linear transmission range of the fault location values ends 0.5 mA be-
low the smallest of these values.
Set in Addresses
5009 Tmax OUTPUT(B1)
,
5019 Tmax OUTPUT(B2)
,
5029 Tmax
OUTPUT(D1)
or
5039 Tmax OUTPUT(D2)
for how long the valid fault location is to
be delayed. If a new fault occurs, the fault location is updated. Having set the value to
∞
the transmission of the last fault location will not be interrupted until a further one is
calculated.
Example:
The fault location must be output in kilometers at mounting location “B” via the analog
output 2. At a value of 20 mA the device must indicate 50 km. For a fault in reverse
direction a value of 19.84 mA should be indicated, in the event of overflow a value of
22.5 mA. The value must be output for a time period of 5 s provided that no fault oc-
curs in the meantime.
Settings:
Address
5013 20 mA (B2) = 50
km,
Address
5017 NEG VALUE (B2)
=
19.84
mA,
Address
5018 OVERFLOW (B2)
=
22.50
mA,
Address
5019 Tmax OUTPUT(B2)
=
5.00
s.
In this case the fault location values can be output up to 19.84 mA – 0.5 mA =
19.34 mA. Theoretically, this corresponds to a value of 48.35 km.
Maximum Fault
Current Set the conversion factor and the maximum output time for the maximum fault current:
For Analog output 1 at mounting location “B” (Port B1):
Address
5002 20 mA (B1) =
value in Amps to be indicated at 20 mA
Address
5009 Tmax OUTPUT(B1)
= maximum output time of the value.
For Analog output 2 at mounting location “B” (Port B2):
Address
5012 20 mA (B2) =
value in Amps to be indicated at 20 mA
Address
5019 Tmax OUTPUT(B2)
= maximum output time of the value;
for Analog output 1 at mounting location “D” (Port D1):
Address
5022 20 mA (D1) =
value in Amps to be indicated at 20 mA
Address
5029 Tmax OUTPUT(D1)
= maximum output time of the value;
for Analog output 2 at mounting location “D” (Port D2):
Address
5032 20 mA (D2) =
value in Amps to be indicated at 20 mA
Address
5039 Tmax OUTPUT(D2)
= maximum output time of the value;
If the maximum output time value is set to
∞
, the transmission of the last fault current
will not be interrupted until a further one is calculated.
The maximum value is 22.0 mA. In case there is an overflow (value is outside of the
maximal permissible threshold), then 22.5 mA is output.
Example:
The fault current must be output in mounting location “D” via analog output 2. 20 mA
corresponds to a value of 20000 A. The value must be output for a time period of 5 s
provided that no fault occurs in the meantime.