METRISO PRO

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Item number: M550R

Analog Test Instrument for Insulation, Low-resistance and Voltage Measurements

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

The METRISO G1000A 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 1000 V

Product Highlights

Analog display of measured values and limit values
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

Measurements analog

Measuring ranges Riso 10K to 1TΩ
Riso U = 50, 100, 250, 500 / 1000V RLO .01 to 10 Ω
V 0 to 500 / 1000V
Display functions
Backlit display
Limit value LED Limit (green/red)
Additional acoustic signal, limit value per VDE 0100 Riso, 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 (V Batt < 8 V)

Features

Measuring categories CAT II 1000V, CAT III 600V
Measuring category CAT III 600V, CAT IV 300V
Integrated 10 MΩ test resistor
DAkkS calibriation certificate (ISO 17025)
Proprietary certificate

Applications

The insulation measuring instruments are suitable for the following tasks:

Measurement of insulation resistance at voltage-free devices and systems, up to 1000 V
Checking of test objects for absence of voltage in systems with up to 1 KV
Testing of the resistance of earthing conductors, protective conductors and equipotential bonding
Testing of electrostatic discharge capacity at floor coverings (using shielded measurement cables) - EN 1081
With the help of the so-called 1 mA test per DIN VDE 0845/ EN 61645, testing for the triggering of performance category B and C / SPD type 2 and 3 surge protection devices (varistors, reference diodes etc.) can be executed with this measuring instrument, on-site as well, and evaluated in accordance with the manufacturer’s data.

Discharging Capacitive Devices Under Test

Capacitive devices under test such as cables and coils, which may be charged with test voltage, are discharged by the measuring instrument. The falling voltage value can be observed at the display.