IG-297-EN version 01; 06/02/2020
27
General instructions
cgmcosmos
system: Medium voltage switchgear
and control gear, fully insulated in SF
6
gas up
to 24 kV with external cable test device
Recommended sequence of operations
5. Recommended sequence of operations
Before carrying out any operation when voltage is
present, we recommend checking the SF
6
gas pressure,
using the manometer.
5.1. Checking the gas pressure
Each tank has a pressure gas with temperature
compensation for checking the gas pressure, which can
easily be seen from outside the cubicle. The pressure gauge
scale is divided into different colours: red and green. For
safe operation, the needle must be in the green zone of the
corresponding temperature band.
Main characteristics:
• Two normally open (NO) voltage-free contacts calibrated
at the same level.
• Accuracy class: + 20 °C - 1%
- 30 °C to 60 °C - 2.5 %
• Temperature range: - 30 °C to + 60 °C
Figure 5.1.
Pressure gauge with temperature compensation
Summary of Contents for cgmcosmos-2lP
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