The METRISO BASE insulation and resistance measuring instruments allow for quick and effective testing of protective measures in accordance with:

• DIN VDE 0100
• ÖVE-EN 1 (Austria)
• SEV 1000 (Switzerland)
• and regulations specific to other countries as well.

Insulation measurement per EN 61557-2 / VDE 0413 part 2
Low-resistance measurement per EN 61557-4 / VDE 0413 part 4
Voltage testing and measurement up to 500 V

Compact and rugged - for service calls under harsh conditions and laboratory use

• Digital and analogue display, backlit
• Intelligent filter - precise and measurement-dependent activation for the measurement of very high resistances
  - beating, i. e. compensation of 16 2/3 Hz and 50 Hz interference
  - attenuation of capacitive influences from power cables, etc.
  - suppression of electric field influences
• Signalling of dangerous contact voltage by means of LED
• Indication of limit value violations by means of LED
• Overvoltage protection - protects the instrument in the event of inadvertent connection to mains power
• Fuse link for all resistance measuring ranges
• Electronic fuse for protection of the low-resistance measurement RLO also protects the fuse link in the low-resistance measuring range in the event of faulty operation
• One measuring point self-test with test resistance of 10 MΩ per EN 50110 / VDE 0105-100
• Guard terminal for compensating surface current
   

The insulation measuring instruments are suitable for the following tasks:

• Measurement of insulation resistance at voltage-free devices and systems, up to 500 V
• Testing of the resistance of earthing conductors, protective conductors and equipotential bonding
• Checking of test objects for absence of voltage
• Testing of electrostatic discharge capacity at floor coverings (using shielded measurement cables) - EN 1081
• No. in Metrological Registry of Russian Federation: 73063-18
   

METRISO	XTRA	TECH	PRO	BASE	INTRO
Article number	M550S	M550P	M550R	M550o	M550N
Measurements			analog
PI, DAR Polarization index measurements	x	-	-	-	-
Riso      Uvariable = 50 ... 1000 V   (Limit value 1 MΩ)	x	-	-	-	-
Riso    URamp = 50 ... 1000 V    Display of breakdown voltage	x	-	-	-	-
Measuring ranges Riso	10 k ... ...1 TΩ	10 k ... 200 GΩ	10 k ... ...1 TΩ	10 k ... 100 GΩ	10 k ... 100 GΩ
Riso   U = 50, 100, 250, 500 / 1000 V	x / x	x / x	x / x	x / -	(x) / x
R        10 Ω... 10 kΩ	x	x	-	x	x
RLO    0,01 ... 10 Ω	x	x	x	x	-
U         0 ... 500 / 1000 V	x / x	x / x	x / x	x / -	x / -
Display functions
Backlit display	x	x	x	x	x
Limit value LED Limit (green/red) Additional acoustic signal, limit value per VDE 0100	Riso, RLO	Riso, RLO	Riso, RLO	Riso, RLO	Riso, -
LED for dangerous contact voltage (when switched off)	x	x	x	x	x
LCD symbol for external voltage	x	x	x	x	x
Battery level display	x	x	x	x	x
Special functions
Data storage in the instrument, 50.000 objects	x	-	-	-	-
Discharge capacitive devices under test	x	x	x	x	x
Safety shutdown (UBatt < 8 V)	x	x	x	x	x
Features
Charging socket, RS232 and USB interface	x	-	-	-	-
Measuring categories CAT II 1000V, CAT III 600V	x	x	x	-	-
Measuring category CAT III 600V, CAT IV 300V	x	x	x	x	x
Integrated 10 MΩ test resistor	x	x	x	x	-
DAkkS calibriation certificate in scope of delivery (W = Proprietary certificate  " )	x	x	(W)	x	-

	Article No: M550o
	Pamphlet METRISO » GB » I » RU » RO (pdf 1569 kB)
	Technical Data » D » GB » F (pdf 467 kB)
	Operating Instructions » D » GB (pdf 1793 kB)
	Short-form Operating Instructions » D-GB-F-I-E-NL-CZ (pdf 1143 kB)
	Notice Safety Information D-GB (pdf 142 kB)
	Technical Information: Optional Measuring Cables and Probes » D-GB (pdf 266 kB)
	CE Certificate (pdf 476 kB)
	Accessories (display)