Philips PM2528 Operating Manual page 12

12
2.1.4,
Influence of Common Mode Signals
Maximum Common Mode
voltage
Protection
The influence of Common Mode Signals is proportional to the value
of the Common Mode Voltage.
Common Mode Signal
250Vrms, DC and AC
50 or 60Hz + 0.1%
250Vrms AC 50 or BOHz + 1%
QnA < 2digits at NM
<20 digits at HRM
< 20 digits at NM
<200 digits at HRM
20uA
to
2000mA | < 10 digits at HRM
<1 digit at NM < 10 digit at NM
< 100 digits at HRM
Between 0 and GUARD
Between GUARD and earth
60 Vrms, 85 Vpeak
: 250 Vrms, 400 Vpeak
Up to 250 Vrms, 350 Vpeak, (fuse will blow}
Ceramic or glass fuse 20 x 5 mm 2.5 A-F acc to [EC 4127/1.
Make sure that only fuses with the required rated current and of the
specified type are used for replacement. The use of make-shift fuses
and the short-circuiting of fuse holders are prohibited.
Alternating current measurements (A ~)
Ranges
Measuring function
Measuring modes
Measuring speed {depending
on the measured value}
Resolution
Frequency range
Accuracy at reference conditions,
{valid between 1% and 100% of range) + (0.4% of reading + 0.07% of range)
Temperature coefficient
AC detector
Maximum allowable crest factor
Voltage drop (at end of range)
Alternating current including de component
Normal Mode (NM) 3% digit display
High Resolution Mode (HRM) 4% digit display
3 to 5.4 measurements/s, both at NM and HRM
7nA in the 2A range at NM
100pA in the 2uA range at HRM
30Hz to SkHz
£ (0.2% of reading + 0.07% of range) for 30Hz - 1kHz
for 1kHz - 5kHz
2uA range up to 500Hz
+ {0.01% of reading + 0,01% of range)/°C
True RMS converter
end of ran;
Big 2, SORT TAR,
reading
e.g. at end of range the maximum crest factor is 2.
On ranges 20mA, 200mA and 2000mA warning on
display when clipping occurs.