ABB 615 Series ANSI, Technical Manual

Page: 709 / 713

Section 16
1MAC050144-MB C
Glossary
702 615 series ANSI
Technical Manual
HMI Human-machine interface
HW Hardware
IDMT Inverse definite minimum time
IEC 61850 International standard for substation communication and
modelling
IED Intelligent electronic device
IP Internet protocol
IP address 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.
IRIG-B Inter-Range Instrumentation Group's time code format B
LAN Local area network
LC Connector type for glass fiber cable
LCD Liquid crystal display
LED Light-emitting diode
LHMI Local human-machine interface
Modbus A serial communication protocol developed by the Modicon
company in 1979. Originally used for communication in PLCs and
RTU devices.
MV Medium voltage
PC Personal computer; Polycarbonate
PCM600 Protection and Control IED Manager
Peak-to-peak The amplitude of a waveform between its maximum positive value
and its maximum negative value; 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.
Peak-to-peak
with peak
backup
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
RAM Random access memory
RCA Also known as MTA or base angle. Characteristic angle.
RJ-45 Galvanic connector type
RMS Root-mean-square (value)