Test Instrument for Insulation, Low-resistance and Voltage Measurements

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
  • 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
  • Guard terminal for compensating surface current


Measuring ranges Riso 10 k … 200 GΩ
Riso U = 50, 100, 250, 500 / 1000 V
R 10 O… 10 kΩ
RLO 0,01 … 10 Ω
U 0 … 500 / 1000 V

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 (UBatt < 8 V)


Measuring categories CAT II 1000V, CAT III 600V
Measuring category CAT III 600V, CAT IV 300V
Integrated 10 MΩ test resistor
DAkkS calibriation certificate in scope of delivery

The insulation measuring instruments are suitable for the following tasks:

  • Measurement of insulation resistance at voltage-free devices and systems, up to 1000 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

Istruzioni per l’uso
Certificato CE
Scheda tecnica
Opuscolo, volantino, brochure, …
Informazioni tecniche

1 Insulation and resistance measuring instrument
1 DAkkS calibration certificate
1 Set batteries
1 Carrying strap
1 Alligator clip
1 KS17-4 cable set
1 Condensed operating instructions
1 Supplement Safety Information
1 Detailed operating instructions for download from our website at www.gossenmetrawatt.com