GOSSEN-METRAWATT
9
Residual Current Limit Value Violations
The METRATESTER
â
5/5-F is equipped with a
selector switch independent, residual current mon-
itoring
function. If the red error lamp lights up and no message regarding a limit value violation
appears at the display, residual current at the mains outlet is dangerously high – regardless of
the selector switch setting. If this is the case, it is advisable to measure residual current (dif-
ferential current) by turning the selector switch to the “I
DIFF
” position.
Only the displayed numeric value should be considered when
evaluating residual current
with
the selector switch in the “I
DIFF
” position. The error lamp may be caused to light up as a result
of residual current monitoring for values of as low as approximately 3.2 mA. The error lamp
lights up in any case as of 3.5 mA.
4
Mains Connection
4.1
Connecting the Tester
➭
Connect the tester to the 230 V mains with the mains plug (1). If no earthing contact
socket is available, or if only a three-phase socket is available, connection of the phase
conductors, the neutral conductor and the PE conductor can be accomplished with the
help of the adapter socket. It includes 3 permanently connected cables and is included
with the KS 13 accessory cable set.
Attention!
!
The mains connection must be fused! The fuse may not exceed a rating of 16 A!
The pick-off clips on the cables at the adapter socket may only be connected in the
voltage-free condition!
If mains voltage is present, characters are displayed at the LCD regardless of the position of
the measuring range selector switch, even if no DUT has been connected. Thus the presence
of characters at the display indicates the presence of voltage – independent of measuring
range selector switch position.
The mains voltage value is indicated at the display in the “250 V~” selector switch position.
In all other switch detent positions, characters are displayed which have no correlation to a
measured value, if a DUT has not been connected.
KS13
KS13
KS13
yellow-green
yellow-green
yellow-green
only possible in TN-C systems
L1
N
PE
L1
L2
L3
N
PE
L1
L3
N
L2