Data Sheet

GMC-I Messtechnik GmbH 11
PROFITEST MTECH+, MPRO, MXTRA, SECULIFE IP
DIN VDE 0100/IEC 60364-6 Testers
Special Functions PROFITEST MXTRA
Determining Residual Voltage / Detecting Mains Fluctuations
(PROFITEST MXTRA
only )
The EN 60204 standard specifies
that after switching supply power
off, residual voltage between L
and PE must drop to a value of
60 V or less within 5 seconds at
all accessible, active components
of a machine to which a voltage
of greater that 60 V is applied
during operation.
With the PROFITEST MXTRA, testing
for the absence of voltage is per-
formed as follows by means of a
voltage measurement which
involves measuring discharge time tu:
In the case of voltage dips of
greater than 5% of momentary
line voltage (within 0.7 seconds),
the stopwatch is started and
momentary undervoltage is dis-
played as Ures after 5 seconds
and indicated by the red UL/RL
diode.
Intelligent Ramp (PROFITEST MXTRA only)
The advantage of this measuring
function in contrast to individual
measurement of I
ΔN
and t
A
is the
simultaneous measurement of
breaking time and breaking cur-
rent by means of a test current
which is increased in steps,
during which the RCD is tripped
only once.
The intelligent ramp is subdivided
into time segments of 300 ms
each between the initial current
value (35% I
ΔN
) and the final cur-
rent value (130% I
ΔN
). This results in a gradation for which each
step corresponds to a constant test current which is applied for
no longer than 300 ms, assuming that tripping does not occur.
And thus both tripping current
and tripping time are measured
and displayed.
Special Functions PROFITEST MXTRA
Testing Residual Current Monitoring Devices (RCMs)
(PROFITEST MXTRA only)
RCMs (residual current monitors)
monitor residual current in electri-
cal systems and display it contin-
uously. As is also the case with
residual current devices, external
switching devices can be con-
trolled in order to shut down sup-
ply power in the event that a
specified residual current value is
exceeded. However, the advan-
tage of an RCM is that the user is
informed of fault current within
the system before shutdown
takes place.
As opposed to individual mea-
surement of I
ΔN
and t
A
, measure-
ment results must be evaluated
manually in this case.
If an RCM is used in combination
with an external switching device,
the combination must be tested
as if it were an RCD.
Testing the Operating States of Electric Vehicles at Charging
Stations per IEC 61851 (PROFITEST MTECH+ & PROFITEST MXTRA only)
A charging station is an equip-
ment designed for the charging of
electric vehicles per
IEC 61851which essentially con-
sists of a plug connector, a cable
protection, a residual current
device (RCD), as well as a circuit
breaker and a security communi-
cation system (PWM).
Depending on the place of instal-
lation and application, further
functional features such as mains
connection and meter may be
included.
Simulation of operating states per IEC
61851with the MENNEKES test box
(State A – E)
The MENNEKES test box only
serves the purpose of simulating
different operating states of an
electric vehicle fictitiously con-
nected with a charging station.