Philips pm2521 - 6.4.2.1. High tension measurements with HT probe PM 9246

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6.4.2. Extended capabilities (optional)
6.4.2.1. High tension measurements with HTprobe PM 9246 (Fig. 24, page 146).
GENERAL
The HT probe PM 9246 is suitable for measuring direct voltages up to 30 kV. The attenuation factor of the
probe is 1000. The measurements are carried out in the direct voltage measurement function of the PM 2521.
All the facilities that are valid in the direct voltage measurements function are also valid for the HT measurements.
HIGH TENSION MEASUREMENTS
— Select function V^-r with the function selector.
— Select the manual or automatic ranging mode with pushbutton AUTO/MAN*.
Remark:
Manual ranging is indicated with a * on the display.
In automatic ranging mode the UP level is 21000 and the DOWN level is 01800.
— Select in manual ranging mode the correct range with pushbuttons UP or DOWN.
Remark:
Available ranges are: 200.00 mV ? ■
2.0000 V
20.000 V
200.00 V
2000.0 V
Range 2000 V is no being used with HT measurements.
Overload is indicated with OL on the display (Display > 21000)
— Connect the HT probe PM 9246 to the PM 2521 as shown in Fig. 24, page 146.
— Select 10 M impedance on the probe and measure the high“Voltage.
Remark:
The polarity indicated is that of the V terminal with respect to the 0 terminal.
With the PM 9246 voltages up to 30 kV can be measured. The attenuation factor of the probe is lOOOx.
When measuring, attention must be paid to safe earth connections.
As HT measurements are made in the M-^-r function of the PM 2521, the HT measurements have the same
facilities as dc voltage measurements. Refer to Chapter 6.7.1.1.
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