Technical Documentation
KSR-V – Capacitor-Bank Protection Relay
Rev. 05
7
2.3 Measured values
The KSR-V measurement system acquires amplitudes and waveforms of the voltages which are connected
to the measurement inputs. The signal processor calculates different values from that information:
ULN:
TRMS voltages L1-N, L2-N, L3-N
ULL:
TRMS voltages L1-L2, L2-L3, L3-L1
THD UL1-3:
THD - factors for voltages L-N
T:
ambient temperature
V 1-4:
TRMS
voltages connected to voltage input channels V1-4
Vf 1-4:
voltage of fundamental waves connected to voltage input channels V1-4 (without harmonics!)
Vth 1-4:
exponentially damped voltage values to simulate thermal measurement connected to voltage
input channels V1-4
THD V1-4:
THD - factors for voltages connected to voltage input channels V1-4
Harmonics:
order 2-63 for voltages UL1-3 and V1-4
3 Relays
Depending on the ordered type the KSR-V is equipped with up to 6 output relays of different types (change
over contacts, closing contacts). Also 4 optocoupler outputs are possible.
None of the relays has any special function, they can all be used for alarm purposes (respect technical
data!).
An alarm relay is triggered by a signal which is received from any of the alarms. It can be configured to be
“normally open” or to be “normally closed“. This setting allows the inversion of the relay function.
Further, each relay can be set to “reset automatically” or to “manual reset”.
All these settings are located in menu “setup
relay”.
Relays, which are not assembled in a device,
are displayed as “not available” in the menus.
