Gossen Metrawatt M550O – Insulation Test Instrument

• Digital and analogue display, backlit
• Intelligent filter
• Signaling of dangerous contact voltage by means of LED
• Indication of limit value violations by means of LED
• Overvoltage protection

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

• DIN VDE 0100 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

METRISO BASE Article number M550O

• Measurements Measuring ranges Riso 10K to 100 GΩ
• Riso v = 50, 100, 250, 500
• R 10 O to 10 KΩ
• RLO .01 to 10 Ω
• V 0 to 500

Display functions

• Backlit display Limit value LED
• Limit (green/red)
• Additional acoustic signal Riso, limit value per VDE 0100 RLO
• LED for dangerous contact voltage (when switched off)
• LCD symbol for external voltage
• Battery level display

Special functions

• Discharge capacitive devices under test
• Safety shutdown (UBatt < 8 V)

Features

• Measuring category CAT III 600V, CAT IV 300V
• Integrated 10 MΩ test resistor

Applications

• 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 the absence of voltage
• Testing of electrostatic discharge capacity at floor coverings (using shielded measurement cables) – EN 1081