MI 3295 Step Contact Voltage Measuring System
MI 3295M Meter operation
19
Synchronized data:
BEFORE TESTS
Station’s time and date will be uploaded to the Meter.
Value of generator current will be uploaded to the Meter (if current
generator is on).
Structure names from Meter will be uploaded to the Station.
AFTER TESTS
Values of logged generator currents I
GEN
will be uploaded to the
Meter for calculation of Step voltage, Contact/Touch voltage and
Potential.
EARTH RESULTS
Stored Earth resistance or Specific earth resistance results in the
Station will be uploaded to the Meter.
Note:
The main purpose of the Time/ Current synchronization is to enable a correction of
the step and contact voltage results after the test. During the test the Step and
Contact/Touch voltage results and Potential results are calculated on base on the
set I
SET
in the Meter. After the test the results made with the Meter can be updated
with the real generator currents I
GEN
that were measured at the same time with the
Station. The stored U
STEP
, U
CONTACT
and Potential result values are then corrected
according to the following formula:
SET
generated
actually
GEN
STEPold
STEPnew
I
I
U
U
)
_
(
SET
generated
actually
GEN
CONTold
CONTnew
I
I
U
U
)
_
(
SET
generated
actually
GEN
ld
POTENTIALo
ew
POTENTIALn
I
I
U
U
)
_
(
The synchronization is active for 24 h.
If the date / time are changed at the Meter or the Station the synchronization of time
and data will be lost. The Current logger must be cleared before it can be
proceeded with the measurements. Before clearing it the content can be
downloaded to the Meter.
If there is no synchronization between both units the
icon is displayed in the
Meter measuring screen.
