ABB 615 Series - Page 371

Peakcounter1123 4
Tripdelaytime
Resettime
Resettime
100mspulse
Voltage pickup value
PICKUP
Transientdetection
Resettimer
TRIP
ResidualvoltageVG
ResidualcurrentIG
VG >
Resetdelaytime
Faultdirection
FWDFWD
Resetdelaytime
GUID-013ADFBD-CD8D-4B21-BAFA-73EFE661AD43 V1 EN
Figure 171: Example of 67NIEF operation in ”Intermittent EF” mode in the faulty
feeder, Peak counter limit=3
The timer calculates the pickup duration value PICKUP_DUR which indicates the
percentage ratio of the start situation and the set operating time. The value is available in
the monitored data view.
Timer 2
If the function is used in the directional mode and an opposite direction transient is
detected, the BLK_EF output is activated for the fixed delay time of 25 ms. If the PICKUP
output is activated when the BLK_EF output is active, the BLK_EF output is deactivated.
Blocking logic
There are three operation modes in the blocking function. The operation modes are
controlled by the BLOCK input and the global setting Configuration/System/Blocking
mode which selects the blocking mode. The BLOCK input can be controlled by a binary
input, a horizontal communication input or an internal signal of the protection relay's
program. The influence of the BLOCK signal activation is preselected with the global
setting Blocking mode.
1MAC059074-MB A Section 4
Protection functions
615 series ANSI 365
Technical Manual