Operation Manual
MI 2092 Power Harmonics Analyser Section III Operation manual
26
U
nomin.
(v) Nominal measuring range of instrument voltage inputs. It is used for
calculation and display of results only.
Default value is 230.0 V (Range from 50.0 V to 450.0 V).
U
inp.K
.(*) Scaling factor for voltage inputs.
This allows for external voltage transformers or dividers that may be used
and ensures that readings are related to the primary.
e.g. for 11 kV / 110 V, the multiplication factor must be set to 100.
Use the LEFT and RIGHT keys to set U
inp.K
. (from 1 to 800). Standard
value is 1.
I
range
(1V) Scale factor for current inputs.
Defines the current equivalent to a 1 V input signal.
Use the LEFT and RIGHT keys to set I
range
(1 V) (1 A to 24 kA).
Standard value is 1000 A.
NOTE: Settings for U
inp.K
. and I
range
affect all displayed values
(powers, energies, harmonic components, etc).
Connection Defines the method of connecting the Instrument to the 3 j systems:
4w 3j 4 wire system (with a Neutral conductor).
All voltage and current inputs are used.
3w 3j 3 wire system (without Neutral conductor)
3 CTs used.
AARON 3j 3 wire system (without Neutral conductor)
(also known as the ‘2 wattmeter method’)
2 CTs used.
Sync.freq. Default mains frequency for input cycle period/scanning.
It is ignored if the instrument detects a valid synchronisation frequency on
the selected sync. input.
Sync.inp. Default synchronisation input.
Use fixed input (L
1
, L
2
, L
3
, I
1
) for synchronisation or select AUTO mode
(automatic scanning for a valid sync. input).
Press ENTER to confirm new settings or press ESC to cancel.
4. Recorder (Data Logging)
Use this function to display the present data logging (recording) status and set the main
Data Logging parameters.
Recording can be started or stopped from this screen.
To START or STOP Data Logging:
Press SELECT key. The password entry screen is opened.
Enter the password.
After confirming the password, press ENTER to start or stop Data Logging
(depending on current status).
If START is selected, the instrument checks the currently set recording
parameters before starting to log data.