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HMI
Human machine interface (Front of the protective relay)
HTL
Manufacturer internal product designation
HTTP
Hyper text transfer protocol
Hz
Hertz
I
Fault current
I
Current
I0
Zero current (symmetrical components), Zero sequence current
I1
Positive sequence current (symmetrical components)
I2
Negative sequence current (symmetrical components)
IA
Phase A current
IAB
Phase A minus B current
IB
Phase B current
IBC
Phase B minus C current
I-BF
Tripping threshold
IC
Phase C current
IC's
Manufacturer internal product designation
ICA
Phase C minus A current
ID
Identification
IEC
International Electrotechnical Commission
IED
Intelligent electronic device
IEEE
Institute of Electrical and Electronics Engineers
IG
Ground current (not residual)
IG
Fault current
Igd
Differential ground current
IGnom
Nominal ground current
IH1
Fundamental harmonic (1st harmonic)
IH2
2nd harmonic
IINV
Inverse
in.
Inch
incl.
Include, including
263
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EMR-3MP0
11 Appendix
11.2 Glossary