Megger VLF Sinus - Test sequence

23
Test sequence
The following flow chart describes the test sequence in principle:
Start menu
Prompt to press the
“HV ON” button
Automatic load
recognition
After appr.
5 seconds
without user input
Automatic
frequency
adaption enabled?
Selected freq.
permissible for
determined load?
no
yes
Automatic frequency
determination
yes
no
(timeout after
20 seconds)
Test voltage is
applied to the test
object for the
specified duration
Cancellation by the user
(
Stop or HV Off)
test duration
passed
Cancelled with fault
description
Information on
test details
HV O
FF
HV O
FF
HV ON
HV OFF
Message that test has
been passed
HV OFF
Voltage breakdown /
Malfunction of system /
Emergency off / Key switch
Logging of data
(only with inserted
USB stick)
OK
Start menu
Query of safety circuit
failed
Start
Proceed with
decreased
frequency?
yes
no
AC modes
only