ABB RELION 620 Series Technical Manual page 929

1MAC504801-IB E
620 series ANSI
Technical Manual
IP address
IRF
IRIG-B
LAN
LC
LCD
LED
LHMI
MAC
MMS
Modbus
MV
OSB
PC
PCM600
Peak-to-peak
Peak-to-peak with
peak backup
PLC
A set of four numbers between 0 and 255, separated by
periods. Each server connected to the Internet is assigned
a unique IP address that specifies the location for the TCP/
IP protocol.
1. Internal fault
2. Internal relay fault
Inter-Range Instrumentation Group's time code format B
Local area network
Connector type for glass fiber cable
Liquid crystal display
Light-emitting diode
Local human-machine interface
Media access control
1. Manufacturing message specification
2. Metering management system
A serial communication protocol developed by the
Modicon company in 1979. Originally used for
communication in PLCs and RTU devices.
Medium voltage
Out of step blocking
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 picking up on two conditions: the
peak-to-peak value is above the set pickup current or the
peak value is above two times the set pickup value
Programmable logic controller
Section 18
Glossary
923