![background image](http://html.mh-extra.com/html/abb/relion-615-series/relion-615-series_technical-manual_2395734.webp)
Pickup value
Non tripping area
Tripping
area
P
Q
GUID-A486836C-CAF2-428C-AE42-4C6172394D17 V1 EN
Figure 363:
Operating characteristics with the Pickup Value setting, Power angle (α)
being +45 and Directional mode "Forward"
Timer
Once activated, the Timer activates the
PICKUP
output. The time characteristics are
according to DT. When the operation timer has reached the value of
Trip delay time
, the
TRIP
output is activated. If a drop-off situation happens, that is, the value of power drops
below
Pickup value
before the trip delay is exceeded, the timer reset state is activated. If
the reset timer reaches the value set by
Reset delay time
, the operate timer resets and the
PICKUP
output is deactivated.
The Timer calculates the pickup duration value PICKUP_DUR, which indicates the
percentage ratio of the pickup situation and the set operating time (DT). The value is
available in the Monitored data view.
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
.
The
Blocking mode
setting has three blocking methods. In the "Freeze timers" mode, the
operate timer is frozen to the prevailing value. In the "Block all" mode, the whole function
is blocked and the timers are reset. In the "Block TRIP output" mode, the function operates
normally but the
TRIP
output is not activated.
Section 4
1MAC059074-MB A
Protection functions
728
615 series ANSI
Technical Manual
Summary of Contents for Relion 615 series
Page 1: ... RELION PROTECTION AND CONTROL 615 series ANSI Technical Manual ...
Page 2: ......
Page 39: ...Section 17 Glossary 1181 Table of contents 615 series ANSI 33 Technical Manual ...
Page 40: ...34 ...
Page 64: ...58 ...
Page 216: ...210 ...
Page 884: ...878 ...
Page 1038: ...1032 ...
Page 1136: ...1130 ...
Page 1172: ...1166 ...
Page 1180: ...1174 ...
Page 1186: ...1180 ...
Page 1192: ...1186 ...
Page 1193: ...1187 ...
Page 1194: ......
Page 1195: ......