METRISO XTRA

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Item number: M550S

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

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

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 1000V

Test voltages in fixed increments, variable or as a ramp 50, 100, 250, 500, 1000 V
Polarization index (PI) and dielelectric absorption ratio (DAR)
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
Acoustic signalling when limit value is exceeded
Detection of interference voltage in switch position OFF
Overvoltage protection - protects the instrument in the event of inadvertent connection to mains power
Fuse link for all resistance measuring ranges
New: 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
Backlit dot matrix display for measured and limit values
Timer function 1 s ... 100 min
Guard terminal for compensating surface current

Measurements

Display functions

Features

The insulation measuring instruments are suitable for the following tasks:

Measurement of insulation resistance at voltage-free devices and systems, up to 1000V
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
With the 1 mA test per DIN VDE 0845/EN 61645, the instrument also allows to perform on-site tests of the response voltage of overvoltage components (varistors, Zener diodes, etc.) of requirement categories B and C / SPD Type 2 and 3) and to evaluate the test results in accordance with manufacturer‘s data.