Measurement of RLO, ZL-PE, ZL-N, RINS, RE, ΔU, phase sequence and voltage OFFSET Management RL-PE / RN-PE / RL-N Measuring functions can be selected directly via the rotary switch

The PROFITEST INTRO provides professional electricians with a universal, compact and rugged, state-of-the-art measuring tool. The test instrument is capable of executing all measurements for testing the effectiveness of safety measures in electrical systems as required by IEC 60364-6 (DIN VDE 0100-600) and other country specific standards, and as specified in the individual sections of DIN EN 61557 (VDE 0413). Thanks to its intelligent and ergonomic design, intuitive operation and an advanced technical concept, it’s aligned consistently to routine daily tasks making it the ideal companion for any electrician.

Large Voltage and Frequency Ranges

---

A broad-range measuring device permits use of the test instrument in all alternating and 3-phase electrical systems with voltages 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 measured line voltage is within the specified range. Measuring error for the PROFITEST INTRO 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.

Measurement of Insulation Resistance 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 voltage 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.

Low-Resistance Measurement

---

Bonding conductor resistance and protective conductor resistance can be measured with a test current of ≥ 200 mA DC, automatic polarity reversal of the test voltage and selectable current flow direction. If the adjustable limit value is exceeded, an LED lights up.

Testing of Residual Current Devices (RCCBs)

---

• Testing of equipment and RCCBs with rising residual current including indication of tripping current and contact voltage
• Testing for N-PE reversal
• Testing of RCCBs with the following nominal currents: ½ • I_ΔN, 1 • I_ΔN, 2 • I_ΔN, (5 • I_ΔN up to 100 mA)
• Selective , SRCDs, PRCDs (Schukomat, Sidos and others), types G/R, AC, A and F; types B, B+ and EV, MI
• Testing of RCCBs which are suitable for pulsating residual direct and alternating current; testing is conducted with positive or negative half-waves

Type Comparison Table

---

PROFITEST	INTRO	MBASE+	MPRO	MTECH+	MXTRA
RCD measurements
UB measurement without tripping the RCD	x	x	x	x	x
Tripping time measurement	x	x	x	x	x
Tripping current measurement	x	x	x	x	x
Selective, SRCDs, PRCDs, type G/R	x	x	x	x	x
AC/DC sensitive RCDs, types B and B+	x	-	-	x	x
Testing of insulation monitoring devices (IMDs)	-	-	-	-	x
Testing of residual current monitoring devices (RCMs)	-	-	-	-	x
Testing for N-PE reversal	x	x	x	x	x
Loop impedance ZL-PE / ZL-N
Fuse table for systems without RCDs	x	x	x	x	x
Without tripping the RCD, fuse table	x	-	-	x	x
With 15 mA test current without tripping the RCD	x	x	x	x	x
Earth resistance
Earth resistance RE (mains operation) I-U measuring method (2/3-wire measuring method via measuring adapter: 2-wire/2-wire + probe), (1 = without probe)	x(1)	x	x	x	x
Earth resistance RE (battery operation) 3 or 4-wire measuring method via PRO-RE adapter	-	-	x	-	x
Soil resistivity ρE (battery operation) (4-wire measuring method via PRO-RE adapter)	-	-	x	-	x
Selective earth resistance RE (mains operation) with 2-pole adapter, probe, earth electrode and current clamp sensor (3-wire measuring method)	-	x	x	x	x
Selective earth resistance RE (battery operation) with probe, earth electrode and current clamp sensor (4-wire measuring method via PRO-RE adapter and current clamp sensor)	-	-	x	-	x
Earth loop resistance ρELOOP (battery operation) with 2 clamps (current clamp sensor direct and current clamp transformer via PRO-RE/2 adapter)	-	-	x	-	x
Equipotential bonding measurement RLO with automatic polarity reversal	x	x	x	x	x
Insulation resistance RINS with variable or rising (ramp) test voltage	x	x	x	x	x
Variable or rising test voltage	x	x	x	x	x
Voltage measurement UL-N / UL-PE / UN-PE / f	x	x	x	x	x
Special measurements
Leakage current (clamp measurement) IL, IAMP phase sequence earth leakage resistance RE(INS) voltage drop standing surface insulation ZST meter start-up	- x x x - -	x x x x x x	x x x x x x	x x x x x x	x x x x x x
Leakage current with PRO-AB adapter	-	-	-	-	x
Residual voltage test	-	-	-	-	x
Intelligent ramp	-	-	-	-	x
Features
Selectable user interface language	x	x	x	x	x
Memory (database for up to 50,000 objects)	x	x	x	x	x
Test sequence auto-function (programmable)	-	x	x	x	x
RS 232 port for RFID/barcode reader	x	x	x	x	x
USB port for data transmission	x	x	x	x	x
Interface for Bluetooth®	-	-	-	x	x
ETC user software for PC	x	x	x	x	x
Measuring category: CAT III 600 V / CAT IV 300 V	x	x	x	x	x
DAkkS calibration (2 = factory calibration certificate)	(2)	x	x	x	x
Article Number	M520T	M520S	M520N	M520R	M520P
PROFITEST	INTRO	MBASE+	MPRO	MTECH+	MXTRA