Siemens SIPROTEC 6MD665, Manual

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2 Functions
62
6MD665 Manual
C53000-G1876-C103-3
enced. The upper limit of the frequency working range must be higher than its lower
limit. It can be specified in the predefined range. A default value is preset.
8GLII$V\Q
This setting indicates the maximum voltage difference of the amounts of V
syn1
and
U
syn2
for asynchronous conditions. It can be specified in the predefined range. A
default value is preset.
IGLII
This setting indicates the maximum frequency difference up to which a connection is
permissible for asynchronous systems. It can be specified in the predefined range. A
default value is preset.
I6<1&+521
This setting indicates the maximum frequency difference up to which a connection is
permissible for synchronous systems. It can be specified in the predefined range. A
default value is preset.
8GLII6\Q
This setting indicates the maximum voltage difference of the amounts of U
syn1
and
U
syn2
for synchronous conditions. It can be specified in the predefined range. A default
value is preset.
α
GLII
This parameter indicates the maximum angle difference between the voltages of the
subsystems, for which the connection is performed. It becomes effective if the fre-
quency difference of the subsystems D
f
≤
F
diffSyn
is valid. The angle can be set in the
predefined range. A default value is preset.
76<1&+521
This parameter indicates the switch delay time for synchronous systems. This is the
minimum period, the
8GLII6\Q
(maximum permissible voltage difference),
I6<1
&+521
(maximum permissible frequency difference) and
α
GLII
(angle difference)
which must remain in the parameterized range until the control command is initiated.
If a value leaves the parameterized range, the time counter is reset. It can be specified
in the predefined range. A default value is preset.
Note
To obtain a stable connection range, the measured values have a hysteresis:
±
10 % or
±
1 V for voltages (the respectively lower value is valid).
±
20 mHz for frequencies.
±
1
°
for angles.
2.7.1.3 Settings
Addr. Parameter Setting Options Default Setting Description
0 T-CB close 0.01 .. 0.60 sec 0.06 sec Closing (operating) time of CB
0 T-SYN. DURATION 1.00 .. 600.00 sec 30.00 sec Maximum duration of synchro-
nism-check
0 fmin 95 .. 105 % 95 % Minimum frequency