Megger PVS 100i, Руководство пользователя

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9 Performing a Phase Identification
Prerequisites To perform an automated phase identification with the mobile unit, the following
conditions must be met:
• A suitable measurement profile must exist for the phase shift between
measuring point and base station (see also section 8).
• The base station is in operation (see also chapter 6) and is still connected to the
same reference phase that it was when the measurement profile was created.
• GSM and GPS reception must be ensured (at least temporarily).
How to proceed Perform a phase identification by carrying out the following steps on the mobile unit:
Step Description
1
If you are tapping the test voltage using measuring cables, connect the U
X
inputs on the device directly with a low voltage line or a suitable capacitive test
point as described in sections 7.2.2.1 and 7.2.2.2.
2
Switch on the mobile unit with the On-/Off- button and make sure that the
device signals both GPS as well as GSM reception (see section 5.4).
3 If the required measurement
profile is available from the quick
selection menu…
If the required measurement profile is not
available from the quick selection menu…
4
Select the measurement profile
from the quick selection menu.
Exit the quick selection menu with the
Configuration button.
5 Select how the test voltage is to be tapped:
HV Measurement – through use of the HV
sensor
Capacitive Test Point – through
measurement on a capacitive test point of
an enclosed switchgear
LV Measurement – through direct
connection to a low voltage cable
6 Select the appropriate measurement profile
and touch the Load button to continue.
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