Table of Contents
Advertisement
52
Current measurements (A =, A~).
4
Select the INT, EXT or MAN start mode.
Select the desired function.
Select the correct range or the AUTO ranging mode,
Select the HIGH RES mode or the normal resolution mode.
Connect the current source to the 0 and A socket.
Remarks
@ When only dashes are displayed (e.g. —
— BA) press START INT or MAN.
@ Inthe A = function the relative reference mode can be used.
@ The maximum permissible input current is 2A.
@
Currents up to 31.6A =: can be measured with shunt PM9244 {refer to section 3.3.2.).
@ Currents up to 100A ~ can be measured with current transformer PM9245 (refer to section 3.3.3.).
@ Overload is indicated with OL in the display.
@ Fuses (at front).
2.00008 nA
2.20008
<=
0.25mV
<
0.25mV
20.0008 A
22.0009
02.0008
<
25 mv
<
25 mv
200.008 uA
220.009
020.008
<2
mv
< 25
mv
- 2000.08 uA
2200.00
0200.08
<250
mV
<250
mV
20.0002mA.
22.0008
02,0008
<250
mV
<252
mV
200.008mA
220.009
020.008
<250
mV
<270)
mV
2000.00mA
0200.00
<500
mV
<700
mV
At delivery a 2,5 A -F low breaking capacity fuse is installed in the PM2528.
Whenever currents are measured in circuits with high de voltages, which can cause high overload currents,
the high breaking capacity (sand filled) shall be used, to prevent the generation of an arc in the fuse,
The high breaking capacity fuse causes a maximum additional voltage drop of 200mV at a current of 2A.
Indication cE in de least significant digit of the display means that input circuit is overloaded, It results
in an error in the measured value. This only counts fot the ranges 20mA, 200mA and 2000mA of the
A* function,
In the table below, the ranges, ranging limits, scale lengths and voltage drops are represented.
"High resolution mode
AUTO UP-
ranging
AUTO DOWN-
ranging
display
length
voltage drop at full scale
low breaking fuse
high breaking
fuse
Advertisement
Table of Contents
