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SECTION III OPERATION MANUAL
Utrecht
- 35 - Ref 002
METER Configuration
Irange(1V) : 1000A
Uinp.K.(*) : 1
sync.inpt. : auto
last calb.:
18.06.2001 09:18
connection : 4wire
sync.freq : 50 Hz
Unomin.(V) : 230.0 V
Fig. 12: Meter Configuration Sub-menu
Use the UP and DOWN keys to select the required parameter.
UNOMIN.(v) Range:
50.0 V to
450.0 V
Nominal measuring range of instrument voltage inputs. It is
used for calculation and display of results only.
Default value is 230.0 V.
Uinp.K.(*) Range:
1 to 800
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.
Example: for 11 kV / 110 V, the multiplication factor must be set
to 100.
Use the LEFT and RIGHT keys to set Uinp.K.
Standard and default value is 1.
Displayed full scale voltage range is UNOMIN. * UINP.K.
Irange (1V) Range:
1 A to 30 kA
Scale factor for current inputs.
Defines the current equivalent to a 1 V input signal.
Use the LEFT and RIGHT keys to set Irange.
Standard and default value is 1000 A.
connection Defines the method of connecting the Instrument to the 3ϕ
systems:
4 wire 3ϕ 4-wire system (with a Neutral conductor).
All voltage and current inputs are used.
3wire 3ϕ 3-wire system (without Neutral conductor) 3 current
transformers used.
AARON
3ϕ 3-wire system (without Neutral conductor) (also known as
the ‘2 wattmeter method’) 2 current transformers used.
Press SELECT key for connection type selection.
sync. freq. 50 Hz, 60 Hz
Default mains frequency for input cycle period/scanning.
It is ignored when the instrument detects valid frequency on the
selected sync. input.
Press SELECT key for selection of system frequency.
sync. inp. U1, U2, U3, I1,
AUTO
Default synchronisation input.
Use fixed input for synchronisation or auto detect mode
(automatic scanning for a valid synchronisation input).
36


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