Description

The H.VIR® 75 type 20 is the small infrared optical window of the H.VIR® range (excluding explosive atmospheres). Installed on electrical equipment such as transformers, switchgear and motors, it allows you to carry out preventive maintenance through a thermographic camera in electrical conditions of normal charge (low and high voltage).

The H.VIR® 75 type 20 IR window can be installed on new equipment or be retrofitted to existing equipment (and it will last the full life span of the equipment). The H.VIR® 75 type 20, like other optical windows of the H.VIR® range, allows you to prevent any risks associated with electrical equipment without pre-inspection.

KET FEATURES :-

Operation from 0.3 µm to 13 µm

• Sensitivity to UV: none
• Quality of optical window:

Parallelism: < 3 µm

Flatness: 5(2)

Surface condition: P4 (S/D: 20/ 40)

• Operating temperature -40°C + 70°C
• Electrical insulation of the frame:
  • Resistivity 4 x 10 15 ohms cm2/m at 20°C
  • 8 x 10 15 ohms cm2/m at 100°C