Country; Electrical System; General Settings - HT COMBITEST422 User Manual

5.1.2. Country

Move the cursor to Country by means of the arrow keys
(,) and confirm with ENTER. Subsequently, the display
shows the screen which allows selecting the country of
reference, which will influence the LOOP and Ra
measurements.
Select the desired option by means of the arrow keys (,).
To store settings, press the ENTER key, to quit without
confirming the changes made, press the ESC key.

5.1.3. Electrical system

Move the cursor to Electrical system by means of the arrow
keys (,) and confirm with ENTER. Subsequently, the
display shows the screen which allows setting the following
parameters:
➢ Vnom → Phase-Neutral or Phase-PE nominal voltage
(110V,115V,120V,127V,133V,220V,230V,240V)
used in the calculation of prospective short-circuit current
➢ Frequency → system frequency (50Hz, 60Hz)
➢ System → type of electric power supply system (TT, TN
or IT)
➢ Contact Volt → limit of contact voltage (25V, 50V)
➢ I RCD → type of trip-out RCD current visualization (Real,
Nom). With the "Nom" option, the instrument shows the
normalized value of trip-out current (referred to the
nominal current). Example: for RCD type A with
Idn=30mA, the actual value of normalized trip-out current
can be up to 30mA. With the "Real" option, the instrument
shows the actual value of trip-out current by considering
the coefficients indicated by guidelines IEC/EN61008 and
IEC/EN61009 (1.414 for RCD type A, 1 for RCD type AC,
2 for RCD type B). Example: for RCD type A with
Idn=30mA, the actual value of trip-out current can be up to
30mA * 1.414 = 42mA.
➢ RCD/RCCB → When selecting the "RCD" option, the
instrument performs the tripping time test with all
multipliers in normal conditions. When selecting the
"RCCB" option, only for 30mA devices, the instrument
performs the tripping time test with x5 multipliers with a
test current of 250mA (type AC) and 350mA (type A).
➢ Isc Factor → (only for Norway) possibility to select the
value of the ISC factor (0.01 ÷ 1.00) to be used in the
calculation of prospective short-circuit current.
Select the desired option by means of the arrow keys (,).
To store settings, press the ENTER key, to quit without
confirming the changes made, press the ESC key

5.1.4. General settings

Move the cursor to General settings by means of the arrow
S E T
E u r o p e
E x t r a E u r o p e
G e r m a n y
U K
N o r w a y
U S A
A u s t r a l i a / N e w Z e a l a n d
S E T
Vnom.
Frequency
System
Contact Volt
to be I RCD
RCD/RCCB
Isc Factor
S E T
EN - 11
COMBITEST422
15/10 – 18:04
15/10 – 18:04
:  
230V
:  50Hz 
:  TN 
:  50V 
:  Nom. 
:  RCD 
:  0.75 
Kommenterede [S7]: si intende "effettivo" o "efficace"? Se
efficace, effective è corretto, altrimenti occorre cambiare in actual.
Kommenterede [S8]: idem come sopra
Kommenterede [S9]: idem
15/10 – 18:04