Settings
18 User’sManual
Average interval
The averaging interval defines the refresh rate of measurements on communication and remote
display.
Temperature unit
Choose a unit for temperature display.
Maximum demand calculation (MD mode)
The instrument provides maximum demand values using thermal function. A thermal function
assures exponent thermal characteristic based on simulation of bimetal meters. Maximal values
are stored in device. A time constant (t. c.) can be set from 1 to 255 minutes and is 6 − time
thermal time constant (t. c. = 6 * thermal time constant).
Example:
Mode: Thermal function
Time constant: 8 min.
Current MD and maximal MD: Reset at 0 min.
Thermal function
01234567891011121314151617181920
Time [min.]
Measured value
Present MD MD peak Input
Starting current for PF and PA (mA)
At all measuring inputs noise is usually present. It is constant and its influence on the accuracy is
increased by decreasing measuring signals. It is present also when measuring signals are not
connected and it occurs at all further calculations as very sporadic measurements. By setting a
common starting current, a limit of input signal is defined where measurements and all other
calculations are still performed.
Starting current for all powers (mA)
Noise is limited with a starting current also at measurements and calculations of powers.
Minimum synchronization voltage
If all phase voltages are smaller than this (noise limit) setting, instrument uses current inputs for
synchronization. If also all phase currents are smaller than Starting current for PF and PA
setting, synchronization is not possible and frequency displayed is 0.
Time cons
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