BLOCK prevents operation of overload feature, at the same time all binary outputs are forced to
zero.
SETLKOUT forces lockout operation (output LOCKOUT) by external signal
RESET resets lockout and forces Theta value to zero
Available binary outputs:
TRIP, operation of the overload feature
PICKUP, current bigger than IPickup level
LOCKOUT, sealed-in TRIP output signal from the function. Note that lockout feature is only
enabled by setting
AutoLockout
= “Enabled”
79M BLOCK, output signal active as long as Theta >
ReclsLevTheta
, which can be used to block
closing of the generator CB
Simplified logic diagram for lockout functionality is shown in Figure
314.
TRIP
OR
SETLKOUT
RESET
BLOCK
LOCKOUT
IEC12000010-2-en.vsdx
AutoLockout
AND
AND
AND
IEC12000010 V2 EN-US
Figure 314: Trip Lockout logic
8.17.8 Technical data
GUID-5EC00FE6-97FD-4F03-9F94-BA14A65ADE86 v1
GUID-3C80D7DB-2ECA-4429-B1BA-2977C7ECE644 v4
Table 325: GSPTTR (49S) technical data
Function Range or value Accuracy
Current start level for overload
protection
(105.0–900.0)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Reset ratio >95%
Start time at 0 to 2 x I
set
Min. = 50 ms
Max. = 170 ms
Thermal time characteristic According to
IEEE Std C50.13–2005
±1.5% or ±200 ms whichever is greater
Minimum operate time for
thermal characteristic
(1.0–120.0) s ±1.5% or ±200 ms whichever is greater
Maximum operate time for
thermal characteristic
(100.0–2000.0) s ±1.5% or ±200 ms whichever is greater
1MRK 502 066-UUS B Section 8
Current protection
585
Technical manual
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