IM 253401-01E
3-15
3
Before Operation
3.9
Selecting the Wiring Method (for WT130)
Relevant Keys
SCALING
AVG
FILTER
STORE
RECALL
HARMONICS
SAMPLE
V OVER
A OVER
MODE
RMS
V MEAN
DC
A
B
C
hour
hour
min
min
sec
V
VA
m
A
k
var
M W
TIME
V
PF
m
A
k
deg
M W
%
FUNCTION
AUTO
AUTO
MODE
1
Φ
3W
V
Hz
m
A
k
h
M W
TRIG
V RANGE A RANGE
HOLD
ENTER
INTEGRATOR
START
HARMONICS
MEMORY
INTEG SET
STOP
RESET
REMOTE
INTERFACE
OUTPUT
LOCAL
SETUP
h
SHIFT
WIRING
3
Φ
4W
3
Φ
3W
3V3A
ELEMENT
1
2
3
FUNCTION
ELEMENT
1
2
3
FUNCTION
ELEMENT
1
2
3
*Shows the operation panel of the WT130. For the differences
between WT110 and WT130, refer to section 2.2, page 2-2, 2-3
Displays
relevant
keys and
indicator
Explanation
Wiring Method
The wiring method is selectable by pressing the WIRING key. The selectable wiring method
depends on the model.
WT110 (253401)
This model has no such function. Only one (1) input element has been installed
(ELEMENT1). Only single-phase, two-wire measurement is possible.
WT130 (253502)
Pressing the WIRING key results in changing the wiring method in the following order. Two
(2) elements have been installed (ELEMENT1, ELEMENT3).
1
Φ
3W
3
Φ
3W
3
Φ
4W
3V3A
1
Φ
3W
:Single-phase, three-wire system
3
Φ
3W
:Three-phase, three-wire system
*In case of a measurement circuit of single-phase, two-wire system, and having selected
either element 1 or 3, selecting any of the above mentioned wring methods will result in
correct measurement/computation. However, the measurement/computation results in
case element
Σ
has been selected lose the physical meaning.
WIT130 (253503)
Pressing the WIRING key results in changing the wiring method in the following order.
Three (3) elements have been installed (ELEMENT1, ELEMENT2, ELEMENT3).
1
Φ
3W
3
Φ
3W
3
Φ
4W
3V3A
1
Φ
3W
:Single-phase, three-wire system
3
Φ
3W
:Three-phase, three-wire system
3
Φ
4W
:Three-phase, four-wire system
3V3A
:Three-voltage, three-current system
*In case of a measurement circuit of single-phase, two-wire system, and having selected
either element 1, 2, or 3, selecting any of the above mentioned wring methods will result in
correct measurement/computation. However, the measurement/computation results in
case element
Σ
has been selected lose their physical meaning.
Note
Select a wiring method which matches the actual wiring, since the computation method varies according
to the wiring method. Consequently, when the wiring method does not match the actual wiring,
measurement errors may occur.
