
60
KHA3000
Using CT (current transformer)
When the current of the device to be measured exceeds the maximum current range of this
product, a CT (current transformer) may be connected. Here, the connections for single-
phase two-wire (1P2W), single-phase three-wire (1P3W), three-phase three-wire (3P3W),
and three-phase four-wire (3P4W) systems are described. The impedance shown is used in
the flicker tests. Except for some special cases, the impedance will not be used in the
harmonic current tests.
The voltmeter is for the connection to external measurement points.
L1, L2, and L3 are the three input phases (channels). L1 will be the reference phase for the
measurement. Be sure to connect L1.
Circuit diagram
Single-phase two-wire (1P2W) circuit
Single-phase three-wire (1P3W) circuit
WARNING
•
This work has a risk of electric shock. For the AC power supply used for the
measurement circuit, be sure to disconnect the power cord from the outlet, turn off
the switch on the switchboard to which the power cord is connected, and turn off the
POWER switch.
CAUTION
Terminal G of this product is not a protective conductor terminal. It is not grounded even if
the wire is connected to terminal G. For terminals G and N, the respective SOURCE and
LOAD terminals are short-circuited internally.
CT
A
V
L1
N
G
V
SOURCE
LOAD
KHA3000
EXT INPUT
L
N
G
L
N
G
AC power
supply
Impedance
network
EUT
CT
A
V
L1
V
SOURCE
LOAD
KHA3000
EXT INPUT
A
V
L2
N
G
V
EXT INPUT
L1
L2
N
G
L1
L2
N
G
AC power
supply
Impedance
network
EUT
Содержание KHA3000
Страница 20: ...20 KHA3000...
Страница 35: ...Overview This chapter provides an overview of this product and explains the options for the product 1...
Страница 42: ...42 KHA3000 Options...
Страница 49: ...Wiring Measurement Circuits This chapter explains the wiring of measurement circuits and the control circuit 3...
Страница 70: ...70 KHA3000 Connecting Communication Cables...
Страница 71: ...System Setup This chapter explains how to turn on the power and how to set up the system 4...
Страница 91: ...Setting the Harmonic Test This chapter explains how to set the test conditions for the harmonic current test 5...
Страница 120: ...120 KHA3000 Controlling the AC Power Supply...
Страница 182: ...182 KHA3000 Checking the AC Power Supply and Repeatability...
Страница 247: ...Other Measurements This chapter explains basic measurement FFT analyzer and in rush current measurement 11...
Страница 349: ...Maintenance This chapter explains how to clean and inspect this product 14...
Страница 352: ...352 KHA3000 Cleaning and Checking...
Страница 353: ...Specifications This chapter explains the specifications of this product 15...
Страница 390: ...390 KHA3000...
Страница 391: ......