ABB RELION 611 Series Technical Manual page 531

1MRS757454 D
611 series
Technical Manual
PC
PCM600
Peak-to-peak
Peak-to-peak with
peak backup
PPS
PRP
R/L
RAM
RCA
REB611
REF611
REM611
REU611
RJ-45
RMS
ROM
RS-485
RSTP
RTC
RTD
SAN
SBO
SCADA
SCL
1. Personal computer
2. Polycarbonate
Protection and Control IED Manager
1. The amplitude of a waveform between its maximum
positive value and its maximum negative value
2. A measurement principle where the measurement
quantity is made by calculating the average from the
positive and negative peak values without including the
DC component. The peak-to-peak mode allows
considerable CT saturation without impairing the
performance of the operation.
A measurement principle similar to the peak-to-peak
mode but with the function starting on two conditions:
the peak-to-peak value is above the set start current or
the peak value is above two times the set start value
Pulse per second
Parallel redundancy protocol
Remote/Local
Random access memory
Also known as MTA or base angle. Characteristic
angle.
Busbar and multipurpose differential protection and
control relay
Feeder protection and control relay
Motor protection and control relay
Voltage protection and control relay
Galvanic connector type
Root-mean-square (value)
Read-only memory
Serial link according to EIA standard RS485
Rapid spanning tree protocol
Real-time clock
Resistance temperature detector
Single attached node
Select-before-operate
Supervision, control and data acquisition
XML-based substation description configuration
language defined by IEC 61850
Section 15
Glossary
525