Gossen MetraWatt 702 - Manual (Page 10)

10 GOSSEN METRAWATT GMBH
3.2 Automatic Recognition of Mains Connection Errors
The device automatically recognizes mains connection errors if the condi-
tions in the following table have been fulfilled. The user is informed of the
type of error, and all measuring functions are disabled in the event of danger.
1) In SETUP – test sequence – IT system
Attention!
!
In either of the first two cases listed in the table above,
immediately disconnect the test instrument from the mains
and eliminate the error!
Note
☞
Voltage at the electrical system’s protective conductor PE may
result in distorted measurement values during testing for the
absence of voltage, or during leakage voltage measurements.
4 General Notes
4.1 Online Instructions
The performance of measurements and tests is quick and easy with the
SECUTEST
®
SII. Integrated online instructions inform the user regarding all
required connections, necessary work steps, operator errors,
measurement results and more in all measuring modes.
Information and test results appear at the dot matrix LCD in plain text.
4.1.1 Automatic Safety Class Selection
Depending upon the type of mains plug or the connection configuration
for the device under test, the test instrument recognizes the respective
safety class and recommends its use for the measurement to be
performed.
4.1.2 Manual or Automatic Operating Sequences
Depending upon selections made in the setup menu (selector switch in
the Auto position), the next measurement is started automatically after the
current measurement has been completed, or can only be started after
manual acknowledgement. The integrated online instructions are
adequate for most tests and measurements. However, the contents of
these operating instructions should nevertheless be read and observed.
4.2 Online Help
Online help can be queried and displayed at the LCD for all measuring
and test functions, and for almost all settings. Schematic diagrams which
illustrate proper connection of devices under test to the SECUTEST
®
SII
can be displayed as well.
➭ Press the following key in order to query online help:
➭ Press the same key again in order to exit online help.
Note
☞
Online help can be queried during measurement by pressing
and holding the help key.
Type of Mains
Connection Error
Message Condition Measurements
Voltage at protective
conductor PE to finger
contact
( key)
Text appears at
LCD
Press
key
U
> 40 V
disabled
Protective conductor PE
and phase conductor L
reversed and/or
neutral conductor N
interrupted
lamp
lights up
Voltage at PE
> 65 V
impossible
(no supply power)
Contact voltage at
protective conductor PE
to neutral conductor N
or phase conductor L
Text appears at
LCD
U
> 25 V
disabled, although
disabling can be
deactivated 1)
Mains voltage
too low lamp
lights up
U
L-N
< 90/180 V
possible
under certain
circumstances
!
!