Technical Documentation
KSR-V – Capacitor-Bank Protection Relay
Rev. 05
8
4 Alarm system
The user can configure up to 32 alarms. Each single alarm continuously compares one measured value
(=alarm source) to a corresponding limit value. If the trigger condition becomes true, it delivers activation
signals to achieve some reaction (relay activation, display alarm).
Each alarm provides the following features:
selectable alarm source from all measured values (though not single harmonics!). Harmonics
supervision can be achieved by using the THD as alarm source!
selectable limit for each alarm
selectable trigger condition (either “value>limit” or “value<limit”)
alarm-specific turn-on delay time
alarm-specific turn-off delay time
selectable alarm outputs (relays or display message with choice for "trip" or "alarm" )
This alarm system reaches its maximum flexibility by these features:
multi-source alarm
One single output relay can be triggered by any of the 32 alarms. More than one alarm can be used to
trigger the same relay. In this case, only one of the alarms is sufficient to activate the relay (logical OR).
As each alarm first handles the necessary delay times before sending the trigger signal to the relay, different
delay times from the alarms, which are sourcing a relay, are handled correctly!
multi-target alarm
One alarm can trigger a free configurable set of relays after the delay time is finished. This obviously
includes the activation of more than one output relay.
relay inversion
Each output relay can be set to be inverted. This means that the relay is normally closed and will open on
activation. This selection is valid for all alarms, which use the relay as a target.
