Datasheet
Gossen Metrawatt GmbH
PROFITESTMASTER SERIES
PROFITESTMTECH+, MPRO, MXTRA, MBASE+
IEC 60364-6, EN 50110-1
3-447-150-03
1/8.22
Large Voltage and Frequency Ranges
A broad-range measuring device permits use of the test instru-
ment in all alternating and 3-phase electrical systems with volt-
ages from 65 to 500 V and frequencies of 16 to 400 Hz.
Loop and Line Impedance Measurement
Measurement of loop and line impedance can be performed in
the 65 to 500 V range. Conversion to short-circuit current is
based on the respective nominal line voltage, insofar as the mea-
sured line voltage is within the specified range. Test instrument
measuring error is also taken into account for conversion. Outside
of this range, short-circuit current is calculated on the basis of
momentary line voltage and measured impedance.
Insulation Resistance Measurement
Using Nominal Voltage, with Variable or Rising Test Voltage
Insulation resistance is usually measured with a nominal voltage of
500, 250 or 100 V. A test voltage which deviates from nominal
voltage, and lies within a range of 20/50 to 1000 V, can be
selected for measurements at sensitive components, as well as
systems with voltage limiting devices.
Measurement can be performed with a constantly rising test volt-
age in order to detect weak points in the insulation and determine
tripping voltage for voltage limiting devices.
Voltage at the device under test and any triggering/breakdown
voltage appear at the test instrument’s display.
Standing-Surface Insulation Measurement
Standing-surface insulation measurement is performed with
momentary line frequency and line voltage.
Low-Resistance Measurement
Bonding conductor resistance and protective conductor resis-
tance can be measured with a test current of 200 mA DC, auto-
matic polarity reversal of the test voltage and selectable current
flow direction. If the adjustable limit value is exceeded, an LED
lights up.
Earthing Resistance Measurement
In addition to measurement of the overall resistance of an earthing
system, selective measurement of the earthing resistance of an
individual earth electrode is also possible, without having to dis-
connect it from the earthing system. A current clamp sensor avail-
able as an accessory is utilized to this end.
The
PROFITEST MPRO and the PROFITEST MXTRA also permit
battery-powered earthing resistance measurements in the “bat-
tery mode”:
3/4-pole and earth loop resistance measurements.
Universal Connector System
The interchangeable plug inserts and 2-pole plug-in adapter –
which can be expanded to 3-poles for phase sequence testing –
allows for use of the test instrument all over the world.
Special Features
• Display of approved fuse types for electrical systems
• Energy meter start-up testing
• Measurement of biasing, leakage and circulating current
of up to 1 A, as well as working current of up to 1000 A
with current clamp sensor (available as an accessory)
• Phase sequence measurement
(including highest line-to-line voltage)
• Testing of residual current devices (RCCBs)
• Measurement of touch voltage without tripping the RCCB – touch
voltage is measured with reference to nominal residual current using
⅓ of the nominal residual current value.
• Testing for N-PE reversal
• Tripping test with nominal residual current, measurement of time to trip
• Testing of equipment and RCCBs with rising residual current including
indication of tripping current and touch voltage
• Testing of RCCBS with the following nominal current values: ½ • I
N
,
1 • I
N
, 2 • I
N
, (5 • I
N
up to 300 mA: PROFITEST MPRO/PROFITEST
MXTRA up to 100 mA: PROFITEST MTECH+)
• Intelligent ramp (PROFITEST MXTRA only):
simultaneous measurement of breaking current I
N
and breaking time t
A
• Testing of selective SRCDs, PRCDs (SCHUKOMAT, SIDOS or com-
parable), type G/R, type AC, types A and F, types B and B+ and type EV
(except PROFITEST MPRO)
• Testing of RCCBs which are suitable for pulsating residual direct cur-
rent – testing is conducted with positive or negative half-waves.
• Creation of test sequences (ETC)
• Intelligent data transmission
Bidirectional interface to Graphisoft™ DDScad Elektro
• Simulation of operating states of electric vehicles at charging stations
from different manufacturers (PROFITEST MTECH+ and
PROFITEST MXTRA only)
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