14
Gossen Metrawatt GmbH
6
Initial Startup
Initial startup of the test instrument is conducted by connecting it
to the power supply. The following sections describe operation,
as well as how to select various basic settings.
6.1
Connecting the Test Instrument to the Mains
➭
See section 20 for nominal mains values (nominal ranges of
use).
➭
Connect the mains cable to the test instrument via its inlet
plug and insert the mains plug into an electrical outlet. Any ro-
tary switch position can be selected.
If a mains outlet (earthing contact outlet) isn’t available, or if
only a 3-phase outlet is available, the adapter socket can be
used to connect the phase conductor, the neutral conductor
and the protective conductor. The adapter socket has three
permanently attached cables and is included with the KS13
cable set.
Attention!
!
If connection isn’t possible via an earthing contact outlet:
Shut down mains power first.
Then connect the cables from the coupling socket to the
mains using pick-off clips in accordance with the dia-
gram.
Disconnection from mains power is only possible via the
mains plug.
Figure 1
Connecting the Test Instrument to the Mains
6.1.1
Automatic Recognition of Mains Connection Errors
The device automatically recognizes mains connection errors if
the conditions in the following table have been fulfilled. The user is
informed of the type of error, and all measuring functions are dis-
abled in the event of danger.
1
10/25 A R
PE
measurements are only possible with line voltages of 115/
230 V and line frequencies of 50/60 Hz.
2
If the user of the test instrument is too well insulated, the following error mes-
sage may appear: “Interference voltage at mains connection PE”
Attention!
!
In the event of mains connection errors as described in
either of the first two cases in the table above, immedi-
ately disconnect the test instrument from the mains and
arrange to have the error eliminated!
Attention!
!
If
, while testing protective conductor potential, you deter-
mine that
the mains protective conductor is conducting volt-
age
(in accordance with the first two mentioned cases),
no further measurements may be performed with the test in-
strument
. If this is the case, potentially dangerous voltage
is also present at the accessible earthing contacts of the
standard socket (test socket). Immediately disconnect
the test instrument from the mains and arrange to have
the fault eliminated at the mains connection.
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 mea-
surements.
Note
Finger Contact
During this test for correct mains connection, a voltage
measurement is performed between the finger contact
and PE at the test instrument’s mains connection, and its
reference potential is acquired via the user’s body resis-
tance to the conductive start key. In order to obtain reli-
able measurement results, this resistance value must be
less than 1 M
. If the user is wearing insulating shoes or
gloves, or is standing on an insulating floor covering,
erroneous measurements and display of the “Interference
voltage at mains connection PE” message may result. Try
to reduce resistance in this case, for example by touching
ground potential with the other hand (e.g. a radiator, but
not an insulating wall etc.).
L1
N
green-yellow
green-yellow
PE
L1
L2
L3
N
PE
L1
L2
L3
N
green-yellow
KS13
Type of Mains
Connection Error
Message
Condition
Measurements
Voltage at
protective conductor PE
to finger contact
(
START
/STOP
key)
Display
Press
START
/
STOP
key
U
25 V
key
PE:
< 1 M
2
All measurements
disabled
Protective conductor PE
and
phase conductor L
reversed and/or
neutral conductor N
interrupted
Voltage at PE
> 100 V
Not possible
(no supply power)
Line voltage
< 180 V / < 90 V
(depending on mains)
U
L-N
< 180 V
U
L-N
< 90 V
Possible under cer-
tain circum-
stances
1
Test for IT/TN system
Display
Connection
N
PE
> 20 k
Possible under cer-
tain circumstances
Содержание SECULIFE ST BASE 25
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