Hioki PW3360-20, Instruction Manual

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3.2 Setting Measurement Conditions on the Wiring Diagram Screen
42
Selecting the wiring method
wiring
selection Sub-
selection
Name Detailed description
1P2W x1
x2
x3 Single-phase/

2-wire lines
If the single-phase/2-wire lines share the same
voltage, you can select from 1 to 3 circuits with
the sub-selection. To use only 1P2W measure-
ment and current, use either
[1P2Wx2]
or
[1P2Wx3]
. You cannot select the 9657-10 or
9675 Clamp on Leak Sensor.
1P3W OFF
+I
Single-phase/

3-wire lines
The sub-selection allows you to measure cur-
rent only (+I) for current CH3 in addition to per-
forming normal 1P3W measurement (OFF).
1P3W1U OFF
+I
Single-phase/

3-wire lines
(1-voltage
measurement)
In 1P3W1U measurement, you can easily mea-
sure voltage for single-phase/3-wire lines using
only CH1. The CH2 voltage RMS value (U2) is
temporarily set to the CH1 voltage RMS value
(U1) to calculate the 1P3W power.
The sub-selection allows you to measure cur-
rent only (+I) for current CH3 in addition to per-
forming normal 1P3W1U measurement (OFF).
3P3W2M OFF
+I
3-phase/3-wire
lines (2-power
method) Three-phase/3-wire measurement is performed
from two line-to-line voltages and two line cur-
rents. U3 is calculated from U1 and U2, and I3 is
calculated from I1 and I2.
Although the total active power is the same as
3P3W3M, 3P3W3M is used when measuring
the power of individual phases, since that mea-
surement cannot be performed using 3P3W2M.
"Appendix2 Three-phase 3-wire Measurement"
(p. A2)
The sub-selection allows you to measure cur-
rent only (+I) for current CH3 in addition to per-
forming normal 3P3W2M measurement (OFF).
3P3W3M - 3-phase/3-wire
lines (3-power
method) The three phase voltage is measured based on
virtual neutral points, and 3-phase/3-wire mea-
surement is performed from the three line cur-
rents. This wiring setup can also be used to
confirm the line-to-line voltage of 3-phase/4-wire
lines.
3P4W - 3-phase/4-wire
lines Three-phase/4-wire measurement is performed
from three phase voltages and three phase cur-
rents. When you wish to confirm the line-to-line
voltage to line, use 3P4W connections with the
3P3W3M connection setting.
I only x1
x2
x3 Current only This wiring setup is used when you wish to mea-
sure only current (not voltage). The sub-selec-
tion allows you to select from one to three
circuits.