400 Series
EN - 37
Fig. 18: Instrument connection for 400V + N + PE three-phase P-P line impedance
measurement by means of single cables and remote probe
Fig. 19: Instrument connection for 400V + PE (no N) three-phase P-PE fault loop
impedance measurement through single cables and remote probe
1.
Press the MENU key, move the cursor to
LOOP in the main menu by means of the
arrow keys (,) and confirm with ENTER.
Subsequently the instrument displays a screen
similar to the one reported here to the side.
LOOP
0°
----
----A
FRQ=50.0Hz
VP-N=228V VP-Pe=228V
P-PE STD
Func Mod.
2.
Use the , keys to select the parameter to be modified, and the , keys
to modify the parameter value.
It is not necessary to confirm the selection with ENTER.
Func
The virtual Func key allows setting the measuring mode of the
instrument, which may be: P-N, P-P, P-PE
UL
The virtual UL key, active only when an IT electrical system and the
P-PE mode have been set (§ 5.2.5), allows setting the limit value of
contact voltage for the system being tested, which may be: 50V,
25V
Mod.
The virtual UL key, not active when an IT electrical system and the
P-PE mode have been set (§ 5.2.5), allows setting the instrument’s
operating mode, which can be: STD, Z2
ICAL
The virtual ICAL key, active only when the Z2Ω mode has been
selected with the MOD key, allows selecting the assumed short-
circuit or fault current displayed. Following values are available:
IkMax3Ph, IkMin3Ph, IkMax2Ph, IkMin2Ph, IkMaxP-N, IkMinP-
N, IkMaxP-PE, IkMinP-PE, IkSTD
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