Megger TORKEL 910, User Manual

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TORKEL 900-SERiES ZP-CS01E CS033663DE
11 CALiBRATiON
11
C
alibration
11.1 General
By using the internal calibration program TORKEL will
be calibrated on internal/external current and internal/
external voltage. However, external instruments must
be used.
▪
Stable voltage power supply (vary less than 1% per
second) with capability up to 200 V DC.
▪
Current source (vary less than 1% per second)
supplying
upp to 100 A DC at a voltage between 10 and
30 V DC
, e.g. a 12 V car battery can be used.
▪
Accurate reference instrument, e.g. HP 34401A, must be
used.
▪
A current shunt with accuracy class 0.1% for connection
in series with the current source.
11.2 How to calibrate
1]
Switch on TORKEL.
2]
Press button to enter the configura-
tion menu.
3]
Press “Calibration” tab.
4]
Press “Start” and follow on-screen instruc-
tions.
WARNING
Follow the instructions carefully. Battery
connectors may have dangerous voltage
Note
You can press “Skip” to continue to the next
calibration step. No value will be added.
Press “Previous” to redo a calibration point.
5]
Press "Store" to save the calibration values.
Note If the “Skip” button is pressed the calibration
values will not be saved.
6]
Connect an USB stick to save a copy of the
calibration report that can be opened with
Excel.
7]
Press "Stop" to stop the calibration and leave
the calibration routine.
The fans will start and run for about 10 sec-
onds.