![background image](http://html.mh-extra.com/html/abb/relion-ref615r/relion-ref615r_installation-manual_4599045.webp)
Section 9
Glossary
AIM
Analog input module
ANSI American National Standards Institute
BIO
Binary input and output
CCEB Communication card extension board
CT
Current transformer
EMC
Electromagnetic compatibility
HW
Hardware
IED
Intelligent electronic device
IP
Internet protocol
LCD
Liquid crystal display
LCP
Liquid crystal polymer
LED
Light-emitting diode
LHMI Local human-machine interface
PA
Polyamide
PBT
Polybutylene terephthalate
PC
1. Personal computer
2. Polycarbonate
PCB
Printed circuit board
PSM
Power supply module
RoHS Restriction of hazardous substances
SW
Software
UL
Underwriters Laboratories
VT
Voltage transformer
WHMI Web human-machine interface
1MRS240046-IB B
Section 9
Glossary
REF615R
37
Installation Manual