8
GOSSEN-METRAWATT
(8)
Test Socket
The DUT is connected to the test socket for the measurement of protective conductor resis-
tance, insulation resistance and equivalent leakage current in accordance with DIN VDE 0701
and DIN VDE 0702, if the DUT is equipped with a mains plug.
(9)
Connector Jack/Terminal for DUT Phase Conductors
This terminal is wired in parallel to the two short-circuited phase conductor terminals at the
test socket (8). The DUT phase conductors can be connected to this jack/terminal, if the DUT
is not equipped with a mains plug.
(10)
Connector Jack/Terminal for DUT Protective Conductor
This terminal is wired in parallel to the protective conductor terminal at the test socket (8). The
DUT protective conductor can be connected to this jack/terminal, if the DUT is not equipped
with an earthing contact plug. Beyond this, exposed conductive parts at the device under
test must be connected to this jack for insulation testing and the measurement of equivalent
leakage current.
(11)
LCD Display
Measured values are displayed in digital form at the LCD.
(12)
Carrying Handle
The carrying handle can be folded out.
(13)
Error Lamp
The red error lamp indicates that limit values have been exceeded during the measurement of
protective conductor and insulation resistance, equivalent leakage, contact and leakage cur-
rent, as well as residual current. The limit values apply for periodic testing in accordance with
DIN VDE 0702:1995.
KS 13 Accessory Cable Set
The KS 13 cable set consists of a adapter socket with three permanently connected cables,
3 measurement cables, 3 plug-on pick-off clips and 2 plug-on test probes. With the KS 13
the tester and the DUT can be connected, even if no earthing contact socket is available for
the mains connection, or no earthing contact plug is present at the DUT.
3.1
Error and Limit Value Messages
The following limit values apply for DIN VDE 0702: 1995
Error Message METRATESTER
â
4/5/5-F
Condition
PE Signal Lamp
Protective conductor potential, at mains
U
B
³
25 V
If contact surface is contacted
Error Messages
METRATESTER
â
5/5-F
Condition
Red Error Lamp
Continuously Lit
Limit Values
are Displayed
Continuous
Acoustic Signal
Protective conductor resistance
R
SL
> 0.3
W
·
·
—
R
SL
> 1
W
·
·
·
Insulation resistance
R
ISO
< 0.5 M
W
·
·
·
R
ISO
< 2.0 M
W
·
·
—
Equivalent leakage current
I
EA
> 7.0 mA
·
·
—
I
EA
> 15 mA
·
·
·
Leakage current / contact current
(substantiation of absence of voltage)
I
A
> 0.25 mA
·
·
—
I
A
> 0.5 mA
·
·
·
Residual current
I
Diff
³
3.5 mA
·
—
·