Data Sheet

GMC-I Messtechnik GmbH 9
PROFITEST MTECH+, MPRO, MXTRA, SECULIFE IP
DIN VDE 0100/IEC 60364-6 Testers
Scope of delivery:
1Test instrument
1 Earthing contact plug insert (country-specific)
1 2-pole measuring adapter and 1 cable for expansion into a
3-pole adapter (PRO-A3-II)
2 Alligator clips
1 Shoulder strap
1 Set of rechargeable batteries (Z502H)
1 Battery charger Z502R
1USB cable
1 DAkkS calibration certificate
1 Supplement Safety Information
1 Condensed operating instructions*
* Detailed operating instructions for download from our website at
www.gossenmetrawatt.com
1 Card with registration key
for software
Special Functions
with PROFITEST MPRO and PROFITEST MXTRA
(Rechargeable) Battery Powered Earthing Resistance Measurements
Earthing Resistance R
E
3-wire measuring method,
probes and earth electrodes con-
nected via PRO-RE adapter
4-wire measuring method,
probes and earth electrodes con-
nected via PRO-RE adapter
Selective Earthing Resistance R
E
(4-wire measuring method)
Current clamp sensor connected
directly, probes and earth elec-
trodes connected via PRO-RE
adapter
Earth Loop Resistance R
Eloop
2-clamp measurement:
Current clamp sensor connected
directly, current clamp trans-
former connected via PRO-RE/2
adapter
Soil Resistivity Rho
Probes connected via PRO-RE
adapter
Special Functions
with PROFITEST MTECH+/MXTRA and SECULIFE IP
Tripping Test for Type B, AC/DC Sensitive RCDs with Rising DC
Residual Current and Measurement of Tripping Current
With the selector
switch in the
I
F
position,
slowly rising cur-
rent flows via N
and PE. The
momentary
measured cur-
rent value is
continuously
displayed. When
the RCCB is
tripped, the last measured current value is displayed. A greatly
reduced rate of increase is used for delayed RCCBs (type
).
Tripping Test for Type B, AC/DC Sensitive RCDs
with Constant DC
Residual Current and Measurement of Tripping Time
With the selector switch set to the respective nominal residual
current, twice the selected nominal current flows via N and PE.
Time to trip is measured for the RCCB and displayed.
Loop Resistance Measurement with Suppression of RCD Tripping
The test instruments make it possible to measure loop impedance
in TN systems with type A, F
and type AC RCCBs (10, 30,
100, 300, 500 mA nominal residual current).
The respective test
instrument gener-
ates a DC residual
current to this end,
which saturates the
RCCB’s magnetic
circuit. The test
instrument then
superimposes a
measuring current
which only demon-
strates half-waves
of like polarity. The
RCCB is no longer
capable of detecting this measuring current, and is consequently
not tripped during measurement.
Selective Earthing Resistance Measurement (mains powered)
I
F
/mA
t [s]
Start
Tripping
S
Start
t1
t3
t2
RCD Disabled!
t
I
F
/mA
Measurement
Operation