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2.14.2 Setting Hints
General
7UM62 Manual
C53000-G1176-C149-3
3002 1/xd CHAR. 1
3003 ANGLE 1
&
FNo. 05329
>Char. 1 BLK.
3005 1/xd CHAR. 2
3006 ANGLE 2
&
FNo. 05330
>Char. 2 BLK.
3008 1/xd CHAR. 3
3009 ANGLE 3
&
FNo. 05327
>Char. 3 BLK.
FNo.05336
3013 Uexcit. <
>Uexc fail.
FNo. 05328
>Uexc fail.
3014A Umin
FNo. 05323
>Exc. BLOCK
Figure 2-53
Logic diagram of the Underexcitation Protection
The underexcitation protection is only effective and accessible if this function was set
within the framework of the protective function configuration (section 2.2, address
0130, UNDEREXCIT. = Enabled). Set Disabled if the function is not required. At
the address 3001 UNDEREXCIT. the user can switch the function ON or OFF, or only
block the trip command (Block Relay).
The correct power system data is required according to section 2.3. This is a
prerequisite for the setting of the underexcitation protection.
Underexcitation (Loss-of-Field) Protection (ANSI 40)
3004 T CHAR. 1
3007 T CHAR. 2
3010 T CHAR 3
FNo. 05337
OR
Exc< picked up
3011 T SHRT Uex<
&
OR
OR
FNo. 05334
Exc. U< blk
FNo. 05332
Excit.BLOCKED
FNo. 05344
Exc<1 TRIP
Tripping
FNo. 05345
matrix
Exc<2 TRIP
FNo. 05343
Exc<3 TRIP
TMin
TRIP CMD
FNo. 05346
Exc<U<TRIP
109
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