Philips pm2521 - 6.4.2.2. High current measurements (A and A~) with SHUNT PM 9244 or CURRENT TRANSFORMER PM 9245

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6.4.2.2. High current measurements (A-^-r and A ~) with SHUNT PM 9244 or CURRENT TRANSFORMER
PM 9245 (Fig. 25 and 26, page 146, 150).
GENERAL
With the shunt PM 9244 it is possible to measure direct and alternating currents (max. I kHz) up to 31,6 A.
As output voltage a selection can be made between 31,6 mV or 100 mV.
With current transformer PM 9245 it is possible to measure alternating currents over 10 A up to 100 A.
The transfer factor is 1000 (100 A = 100 mA).
All facilities which are valid in the direct and alternating voltage and alternating current measurements functions
are also valid for the high current measurements.
DIRECT, ALTERNATING HIGH CURRENT MEASUREMENTS WITH SHUNT PM 9244 (Fig. 25, page 146).
— Select function V-^^ or V~ rms with the function selector.
— Select the manual or automatic ranging mode with pushbutton AUTO/MAN*
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Remark:
Manual ranging is indicated with a * on the display.
In automatic ranging mode the UP level is 210000 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
Only range 200 mV is being used. Overload is indicated with OL on the display.
— Connect the shunt PM 9244 to the PM 2521 as shown in figure 25, page 146.
Remark:
There are two current ranges available on the PM 9244 viz.: 10 A and 31.6 A.
As output voltage a selection can be made between 31.6 mV or 100 mV.
10 A - M00 mV 10 A->31.6 mV
„ 31.6 A-> 100 mV 31.6A->31.6V
Alternating currents may be measured up to 1 kHz. As the high current measurements with the PM 9244 are
made in the V-r-r-r and V~ rms function of the PM 2521, they have the same facilities as direct and alternating
voltage measurements. Refer to Chapter 6.7.1.1. and Chapter 6.7.1.2.