GridSense Line IQ LIQ60, User Manual, Page: 11 / 39

000-2166 Rev 3.0 Franklin Grid Solutions LLC
Page 9 of 37
Term Meaning
Return of
volts When a CMS detects a return of voltage on the conductor after a fault c o n d i t i o n .
RF Radio Frequency
RMS Root Mean Square (An amplitude of a measurable value, e.g. Voltage, written V
RMS
). The
square root of the mean over time of the square of the waveform.
RTC Real Time Clock.
RTU Remote Terminal Unit. In SCADA terminology, the LIQ-Gateway is an RTU. It collates
information from sensors to be sent to centralized control units .
SCADA Supervisory Control And Data Acquisition. Usually a computer system that monitors and
controls industrial or facility-based processes.
Self-
clearing
fault Fault current detected with no loss of supply during the event profile recording p e r i o d .
Set up The process of setting up equipment to perform a designated task. In this manual refers
mainly to hardware and installation, usually precedes configuration.
SI Short Interruption: brief (less than one minute) loss of power on the conductor.
SLA Battery Sealed Lead Acid Battery. The power storage for the LIQ-60 and LIQ-Gateway.
Slow Filter A 10-day non-linear average reflecting the highest value of current and voltage over the
weekly load cycle.
TPF True Power Factor. The ratio of the real power flowing to the load, to the apparent power in
the circuit.
Transient
Fault Fault detected with a loss and return of supply seen during the event profile recording p e r i o d .