Dipl.-Ing. H. Horstmann GmbH
Instructions for Use
8
SMART
NAVIGATOR
2.2.
FAULT DETECTION
,
INDICATION AND RESET
2.2.1
F
AULT
D
ETECTION
The SMART NAVIGATOR constantly monitors the load current on the conductor and electronically
adjusts the trip curve position accordingly. This self adjustment is defined as load tracking function.
The initial or out of the box setting is the most left trip curve, the reference trip setting is displayed in
the figure below. Its location is described by the time - current coordinates @200ms.
Figure 2.2: NAVIGATOR Load Tracking / Self adjusting function
2.2.2
F
AULT
I
NDICATION AND
R
ESET
The SMART NAVIGATOR features one ultra bright RED LED that provides fault information.
LED Status
Meaning
Off
Normal status of FCI
1 RED LED Flashing
Fault Indication
Fault detection is indicated by an extremely bright flashing LED, giving excellent focused visibility.
Upon detection of a fault, the LED of the indicator begins to flash. After a predefined delay, a current
sensor is enabled that will check if line current is present or not. If no current is detected, the fault is
classified as “permanent fault” and the LED will continue to flash until reset by current or by time or by
magnet, whichever occurs first.
If after the predefined delay a current is detected, the fault is classified as “momentary fault” and the
red LED will be turned off.
Local manual reset and testing is done with a permanent magnet.
