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18
РМ 2522
VI-3.5.
Direct current measurements
- Depress pushbutton mA =
- Select the correct measuring range
- Connect the current source to be measured to terminals "0" and "А".
Notes:
- The polarity indicator indicates the polarity at terminals "A" with respect to
terminal "0"
- Maximum permissible current between terminals "0" and "A" is 2 A.
VI-3.6.
DC and AC (max.
1 kHz) currents up to 31.6 А with DC shunt РМ 9244
- Select measuring mode V=
or V~
- Connect the output sockets
+ and - of shunt PM 9244 to terminals "VQ" and "0"
- Set the range selector to position 200 mV
- Connect the current cource to terminals
- and 10 A or 31.6 A depending on the current
to be measured.
- By means of switch SK] (Fig. 5 ) the output voltage of shunt PM 9244 can be switched-
over from 100 mV to 31.6 mV.
VI-3.7.
Alternating current measurements
- Depress pushbutton mA ~
- Select the correct measuring
range
- Connect the current source to be measured to terminals "0" and "А".
Note:
- Maximum permissible current between terminals "0" and "A" is 2 А.
VI-3.8.
AC currents up to 100 А with current transformer PM 9245
- Select measuring mode AC
- Connect the terminals of transformer PM 9245 to terminals "0" and "1"
- Set the range selector to position 200 mA
- Pass the current-carrying conductor through the opening of the transformer
- Maximum permissible alternating current 100 A
- Frequency range 45 Hz - 1 kHz.
VI-3.9.
Resistance measurements
- Depress pushbutton КО or 20 МО
- Connect the unknown resistor to terminals "0" and "VQ"
- Select the correct measuring range
Notes:
- The measuring current is:
1 mA for the 200
О and
2 КО ranges
10 HA for the
20 КО and 200 КО ranges
100 nA for Не
2 MO and
20 MQ ranges
- Semi-conductors can be measured in forward direction in the 2 КО range.
The display shows the diode voltage in forward direction of 1 mA.
Terminal "VQ" is positive with respect to terminal "0".
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