MI 2087 AL2 EasiTEST
Measurement instructions
30
Step 3
q
Press the
START
key and release it. Measurement will be carried out and
result displayed afterwards.
q
Check calculated prospective short-circuit current by pressing the
DISPLAY
key.
The current is calculated as follows:
Ipsc = Un
⋅
1.06 / R
L-PE
Where:
Un = 115V (100V
≤
U
L-PE
<
160V)
Un = 230V (160V
≤
U
L-PE
≤
264V)
If RCD trips during contact voltage measurement blinking “
rcd”
message will be
displayed blinking way.
Notes:
q
Nominal input voltage range is 100 V
÷
264V. If input voltage is out of the
range, the voltage value equipped with
“
!
” mark will be displayed after pressing
START
key. Warning sound is also emitted.
q
The instrument will exchange L and N terminals automatically if N/L2 and L/L1
test leads (Universal test cable) are connected reversed way or terminals on
tested wall plug are reversed.
q
If test result is out of display range “
>1999
Ω
” message will be displayed!
q
Specified accuracy of tested parameters is valid only if mains voltage is stabile
during the measurement!
q
“
bat
” message displayed during or after finishing the measurement means
batteries are too weak to guarantee correct result. Replace the batteries.
3.8 Line resistance R
L-N
/R
L-L
and prospective short-circuit
current
For general information concerning the measurement, refer to enclosed handbook
Measurements on electric installations in theory and practice
.
How to carry out the measurement
Step 1
q
Connect test cable (Universal test cable) to EasiTest.
q
Set function switch to
LOOP L-N, PSC
position, L–N(L) voltage measurement
will start to run; see the figure below (left side):
