Glossary - Iskra MC320 User Manual

BASIC DESCRIPTION AND OPERATION
Glossary
Term
AC
Hand‐over place
Hysteresis expressed as
percentage [%]
MD
MiQen
MODBUS
Profibus
M‐Bus
M − Average interval
p
M − Sample factor
v
PA total
PA1, PA2, PA3
PF
RMS
RTC
THD
2SO
2TI
2RO
2DI
Measuring centres – MC320, MC330, MC350 & MC350H ‐ User's Manual
Explanation
Alternating voltage
Connection spot of consumer installation in public network
Percentage specifies increase or decrease of a measurement from a certain limit
after exceeding it.
Measurement of average values in time interval
Software for Iskra, d.d. instruments
Industrial protocol for data transmission
Industrial protocol standardized as IEC 61158
Industrial protocol fully complies with M‐BUS European standard EN13757‐2
Defines frequency of refreshing displayed measurements on the basis of a Sample
factor
Defines a number of periods for measuring calculation on the basis of measured
frequency
Angle calculated from total active and apparent power
Angle between fundamental phase voltage and phase current
Power factor
Root Mean Square value
Real time clock
Total harmonic distortion
S0 (pulse) output module
Tariff input module
Relay (alarm) output module
Digital input module
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