Functions
2.11 Measures for Weak and Zero Infeed
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
283
2.11.4 Tables on Classical Tripping and Tripping according to French Specification
2.11.4.1 Settings
Addresses which have an appended "A" can only be changed with DIGSI, under Additional Settings.
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding second-
ary nominal current of the current transformer.
Addr. Parameter C Setting Options Default Setting Comments
2501 FCT Weak Infeed OFF
ECHO only
ECHO and TRIP
Echo &Trip(I=0)
ECHO only Weak Infeed function
2502A Trip/Echo DELAY 0.00 .. 30.00 sec 0.04 sec Trip / Echo Delay after
carrier receipt
2503A Trip EXTENSION 0.00 .. 30.00 sec 0.05 sec Trip Extension / Echo
Impulse time
2504A Echo BLOCK Time 0.00 .. 30.00 sec 0.05 sec Echo Block Time
2505 UNDERVOLTAGE 2 .. 70 V 25 V Undervoltage (ph-e)
2509 Echo:1channel NO
YES
NO Echo logic: Dis and EF on
common channel
2510 Uphe< Factor 0.10 .. 1.00 0.70 Factor for undervoltage
Uphe<
2511 Time const. Ï„ 1 .. 60 sec 5 sec Time constant Tau
2512A Rec. Ext. 0.00 .. 30.00 sec 0.65 sec Reception extension
2513A T 3I0> Ext. 0.00 .. 30.00 sec 0.60 sec 3I0> exceeded extension
2514 3I0> Threshold 1A 0.05 .. 1.00 A 0.50 A 3I0 threshold for neutral
current pickup
5A 0.25 .. 5.00 A 2.50 A
2515 TM 0.00 .. 30.00 sec 0.40 sec WI delay single pole
2516 TT 0.00 .. 30.00 sec 1.00 sec WI delay multi pole
2517 1pol. Trip ON
OFF
ON Single pole WI trip allowed
2518 1pol. with 3I0 ON
OFF
ON Single pole WI trip with 3I0
2519 3pol. Trip ON
OFF
ON Three pole WI trip allowed
2520 T 3I0> alarm 0.00 .. 30.00 sec 10.00 sec 3I0> exceeded delay for
alarm
2530 WI non delayed ON
OFF
ON WI non delayed
2531 WI delayed ON
by receive fail
OFF
by receive fail WI delayed
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