Kikusui KHA3000, Operation Manual, Page: 196 / 392

196
KHA3000
61000-3-3
Selection of the Current Input Terminal menu
Shunt
Select "Shunt" to use the SOURCE and LOAD terminals on the rear panel of this product.
The shunts are contained inside the L1, L2, and L3 input sections. When CTs (current
transformers) are to be used, also select "Shunt". The secondary circuits of CTs are to be
connected to the SOURCE and LOAD terminals.
Sensor( )
p. 86
Select "Sensor" to use the optional current sensors connected to the EXT CLAMP terminals on
the rear panel of this product. When "Sensor" is selected, the C icon will be shown in the I RANGE
part of the display. The EXT CLAMP terminals are provided at the L1, L2, and L3 input sections.
BNC( )
Select "BNC" to use external current shunts or other current sensors connected to the EXT
INPUT terminals on the rear panel of this product. When "BNC" is selected, the B icon will be
shown in the I RANGE part of the display. The EXT INPUT terminals are provided in the L1,
L2, and L3 input sections.
22 _ CT Ratio This item is enabled when "Enable" is selected in the Current Scaling
menu. This item is enabled when "Shunt" is selected in the Current Input
Terminal menu. Here, the scaling ratio of CT (current transformer) is set.
The input range is 0.001 to 1000.000.
Use the ten-key to enter the value and press the ENTER key or use the
large knob to increment or decrement the value.
The input phase (channel L1, L2 or L3) that has been selected in Ch Setting
(Scaling) will be shown at the underlined position of the menu item. 1.000
23 _ Curr. CF This item is enabled when "Enable" is selected in the Current Scaling
menu. This item is enabled when "Shunt" or "BNC" is selected in the
Current Input Terminal menu. In order to measure the peak value
without the effect of any distortion, the peak to rms ratio (CF) is set for
the range currently set. The CF setting affects the measurement
resolution.
The input range is 1.00 to 4.00.
Use the ten-key to enter the value and press the ENTER key or use the
large knob to increment or decrement the value.
The input phase (channel L1, L2 or L3) that has been selected in Ch Setting
(Scaling) will be shown at the underlined position of the menu item. 4.00
24 Prev/Next Page 3/4 Move to other sub-menu pages. -
25 _ EXT-CS Ratio (mV/A) This item is enabled when "Enable" is selected in the Current Scaling
menu. This item is enabled when "BNC" is selected in the Current Input
Terminal menu. Here, the voltage to current scaling ratio is set for the
external current sensor. The input range is 0.250 mV/A to 2500.000 mV/
A. Use the ten-key to enter the value and press the ENTER key or use
the large knob to increment or decrement the value.
The input phase (channel L1, L2 or L3) that has been selected in Ch Setting
(Scaling) will be shown at the underlined position of the menu item. 25.000 mV/A
26 Return Exit from the Input/Scaling Setting menu. –
27 Prev/Next Page 4/4 Move to other sub-menu pages. –
F key: Function key. You can also use the ESC key to return.
CAUTION
• The maximum value of input current is 40 Arms or 100 Apeak, whichever smaller.
Exceeding this value may cause overheating of the current detector.
• If the current detector overheats, the OHP icon appears on the upper part of the screen.
Immediately shut down the power to the EUT to cut the input current of this product.
Restart the test after the OHP icon disappears.
C icon
See
B icon