296 User’s Manual TOS93 Series
Specifications | Partial discharge test section
Partial discharge test section
Applicable models:
Output function
Item Specifications
AC output
section
Output range 0.050 kV to 5.000 kV
Resolution 1 V
Setting accuracy ±(1.2 % of setting + 0.02 kV) (at no load)
Max. rated load 250 VA (5 kV/50 mA)
Max. rated current 50 mA (when the output voltage is 0.2 kV or higher)
Output voltage waveform
1
Sine
Distortion 2 % or less. (when the output voltage is 0.5 kV or higher and no load or
a pure resistive load is connected)
Crest factor
± 3 % (800 V or higher)
Frequency 50 Hz/60 Hz
Accuracy ±0.1 %
Voltage regulation ±3 % or less (when changing from maximum rated load to no load)
Output method PWM switching
Output voltage monitor function If the output voltage exceeds ±(10 % of setting + 0.05 kV), the output is
turned off, and the protection function is activated.
1 If an AC voltage is applied to a capacitive load, the output voltage may rise higher than at no load depending on the
load capacitance. Further, waveform distortions may occur if an EUT whose capacitance is dependent on voltage (for
example, an EUT that consists of ceramic capacitors) is connected as the load. However, if the test voltage is 1.5 kV,
the effect of a capacitance of 1 000 pF or less can be ignored. Because the product’s high-voltage power supply uses
the PWM switching method, if the test voltage is 500 V or less, the switching and spike noise proportions are large.
The lower the test voltage, the greater the waveform is distorted.
2
To Next Page
