HT EASYTEST COMBI519 User Manual

EASYTEST-COMBI519
EN - 58
6.
Press the GO/STOP key on the instrument, the START
key on the remote switch probe or use the AutoStart
feature (see § 5.1.5). The instrument starts the
measurement and the “Measuring…” message is shown
on the display.
LOOP 15/10 – 18:04
TN
Ipfc
ZL-PE
=
=
- - -
- - -
A

FREQ. = 50.00Hz
VL-PE=231V
VL-N=232V
Measuring…
L-PE STD
FUNC MODE
7. During this whole stage, do not disconnect the measuring
leads of the instrument from the system under test. The
following screen appears on the instrument's display.
The value of the prospective short-circuit current (Ipfc) is
shown in the upper part of the display, while the
Line/Fault loop Z
L-PE
impedance is shown in the bottom
part of the display.
The Standard (Std) prospective short-circuit current (Isc)
is calculated using the following formulas:
Z
MEAS
= measured L-L,L-N,L-PE loop impedance
U
NOM
= nominal voltage (depending on the system)
PEL
NOM
PESCL
Z
U
I



NL
NOM
NSCL
Z
U
I



LL
NOM
LSCL
Z
U
I



3
RCD 15/10 – 18:04
TN
Ipfc
ZL-PE
=
=
163
1.41
A

FREQ. = 50.00Hz
VL-PE=231V
VL-N=232V
L-PE STD
FUNC MODE
8. Press the SAVE key to store the test result in the instrument’s memory (see § 7.1) or
the ESC/MENU key to exit the screen without saving and go back to the main
measuring screen.

HT EASYTEST COMBI519 Specifications

General

Brand	HT
Model	EASYTEST COMBI519
Category	Measuring Instruments
Language	English