Reference Manual
Power Analyzer EMM5
Rev. 11
2018-07
13
4.6.1
Input of numerical values
Inside the “SETUP”-menu and its submenus, the user will at certain points encounter the problem to enter numerical
values. Whenever the EMM5 prompts for the input of a value, the routine will be the same:
A preset-value will be displayed with the first (highest) digit underlined by a “_”. This digit can now be changed by use
of the keys which are labelled with “+” and “-“ signs. If no change can be encountered while pressing one of these
buttons, the value may be at its minimum or maximum, so just try the other key or change to the next, smaller digit by
use of the “
” key. After changing, the next digit will be also underlined and can now be altered just like the first one.
To store the value, proceed to the least significant digit on the right side. Press the “
” key once more, and the new
value will be saved and used.
At any time the user can go back to the last menu without changing the value by pressing the “
” key.
4.6.2
Parameter
Select one of the submenu entries with the arrow-keys (“
” and “
”) and activate it by pressing the “
” key:
PT RATIO: This sets up the device to work with a voltage measurement transformer. Enter the transformer
ratio. The range is 1-4000. If no transformer is used and the EMM5 is directly connected for voltage
measurement, enter factor 1.
CT RATIO: This sets up the device to work with current measurement transformers. Enter the transformer ratio
(e. g. 1000/5 = 200). The range is 1-10000. Current transformers always have to be used!
This setting only applies to current channels L1, L2, and L3!
CT-N RATIO: This sets up the device to work with a current measurement transformer for the N current. Enter
the transformer ratio (e. g. 1000/5 = 200). The range is 1-10000. If this channel is connected, a current
transformer has to be used!
This setting only applies to current channel N!
THERMIC TAU: This sets the damping time constant for the Ith and Pth values. The time constant is given in
seconds (default value is 300 seconds = 5 min). The entered value is the time constant of the exponential
damping function.
CALC/MEAS IN: Here the measurement method of the I-N current can be selected.
DISPLAY CONTRAST: Here the display contrast can be adjusted by repeated use of the “+” and “-” keys.
TIME & DATE (optional): Setting of date and time. Important for Tariff switch over and event-recorder.
