Chroma 19032 - Current Calibration; AC Current Calibration

Calibration Step
7-3
Press [] key to display
Display IRV 1kV Offset (100V) ; IRV OFFSET POINT calibration
Press [STOP] [START] ; Read the HV meter value
; Example 0.092kV
(Using the keypad, enter the reading from the voltmeter)
Press [0] [.] [0] [9] [2] [ENTER]
Press [STOP] ; Stop IRV OFFSET POINT calibration
Press [] key to display
Display IRV 1kV Full (1kV) ; IRV FULL POINT calibration.
Press [STOP] [START] ; Read the HV meter value
; Example 1.052kV
(Using the keypad, enter the reading from the voltmeter)
Press [1] [.] [0] [5] [2] [ENTER]
Press [STOP] ; Stop IR voltage calibration
7.3 Current Calibration
The dummy load must be between the high potential terminal and the
input terminal of the ammeter. Otherwise, a dangerous situation may
occur.
7.3.1 AC Current Calibration
Connect the hipot tester’s high potential terminal to a 10MΩ load resistor and then connect to
the AC ammeter’s high potential terminal in series. Connect the hipot tester low potential
terminal to the AC ammeter’s low potential terminal or 9102 and select ACA MODE [10MΩ].
Press [] key to display
Display ACA 3mA Offset (0.12mA) ; ACA 2.999mA range Offset point calibration
Press [STOP] [START] ; Read out the ammeter value
; Example 0.124mA
Press [0] [.] [1] [2] [4] [ENTER]
Press [STOP] ; Stop ACA 2.999mA range Offset point
calibration
Change the dummy load resistor to 500kΩ 50watt (or higher) or connecting 9102 to select
ACA MODE [500kΩ].
Press [] key to display
Display ACA 3mA Full (2.5mA) ; ACA 2.999mA range Full point calibration
Press [STOP] [START] ; Read out the ammeter value
; Example 2.903mA
Press [2] [.] [9] [0] [3] [ENTER]
Press [STOP] ; Stop ACA 2.999mA range calibration
Press [] key to display
Display ACA 40Ma Offset (2.5mA) ; ACA 40mA range Offset point calibration
Press [STOP] [START] ; Read out the ammeter value
; Example 2.903mA
CAUTION