Controls and Indications
19
4.2 LED INDICATIONS
LED Colour
Function
Trip
Red
Common Alarm LED to show Trip status.
Flashing: Indicates that a mains decoupling event has been detected. Further
LED indication shows the type of trip.
Unlit : No alarms active.
U
Mutlicolour
(see below)
Indicates activation of one or more of the following Voltage Alarm conditions.
•
Under Voltage Stage 1
•
Under Voltage Stage 2
•
Under Voltage Stage 3
•
Under Voltage Stage 4
•
Under Voltage Stage 5
•
Over Voltage Stage 1
•
Over Voltage Stage 2
•
Over Voltage Stage 3
•
Over Voltage Stage 4
•
Over Voltage Stage 5
•
Over Average Voltage
•
Zero Sequence Voltage
•
Negative Sequence Voltage
•
Positive Sequence Voltage
•
Asymmetry
•
Phase Rotation Alarm
f
Mutlicolour
(see below)
Indicates activation of one or more of the following Frequency Alarm conditions.
•
Low Frequency Stage 1
•
Low Frequency Stage 2
•
High Frequency Stage 1
•
High Frequency Stage 2
df/dt Red
Lit : Indicates activation of one or more of the following R.O.C.O.F. Alarm
conditions
•
R.O.C.O.F Stage 1
•
R.O.C.O.F Stage 2
•
R.O.C.O.F Stage 3
Unlit : R.O.C.O.F. has not been activated.
Vec
Red
Lit : Indicates that the Vector Shift trip has been activated.
Unlit : Vector Shift has not been activated.
Alt
Amber
Lit : The device’s ‘alternative configuration is active.
Unlit : The device’s ‘main configuration’.
Sup
Green
Shows the operating state of the device.
Flashing : The Supervision Timer is in progress, after which the device
supervision becomes active.
Lit Steady : The DSEP100 is active, checking for a mains decoupling event.
Unlit : The device is disabled.
U and f LEDs are multicolour LEDs. The colour of the LED indicates the exact status of the LED as
below:
Colour
Function
Unlit
Alarm disabled.
Green
Alarm active and measured values are within configured normal operating parameters.
Amber
Alarm active and measured values are outside configured normal operating parameters
during the trip delay timer.
Red
Alarm tripped.
