HT instruments MACROTEST G3 - Manual (Page 50)

MACROTESTG3 - COMBIG3
EN - 49
6.4.9. Impedance measurement by means of the accessory IMP57
Impedance measurements performed with the optional accessory IMP57 involve its
connection to the Master unit (MACROTESTG3 or COMBIG3) via optical connector
through the optical cable/RS-232 C2001 supplied with same accessory.
The IMP57 must be directly powered by the mains on which measurements are performed.
For detailed information, please refer to the user manual of the accessory IMP57.
Please find below the procedure for the measurement of STD L-L impedance in TN
systems. The same procedures can be applied to any other case considering what is
reported in previous chapters.
1. Select the options "TN", “25 or 50V”, “50Hz or 60Hz”
and the reference voltage in the general settings of the
instrument (see § 5.1.3).
Touch the icon. The screen to the side appears on
the display.
Touch the lower icon on the left. The following screen
appears on the display:
2. Move the left slide bar reference by selecting the
icon to execute the measurement with the accessory
IMP57.
Move the central slide bar reference by selecting the
"L-L" option.
Move the right slide bar reference by selecting the
"STD" option.
Confirm the choice by going back to the following initial
measurement screen.
3. The
symbol on the display indicates that the
accessory IMP57 is not connected to the instrument or
not powered directly by the mains.
Connect the IMP57 to the instrument via the cable
C2001 and to the powered system via the input
terminals C1, C2 and P1, P2 placed on it (see the
IMP57 user manual). The following screen appears on
the display: