22 SafeRing/SafePlus 36kV
| Installation and operating instruction
7. MAINTENANCE
All components in the SF
6
tank are maintenance-free for the
declared life expectancy of the product. The tank is made of
stainless steel.
If the panels get any scratches or damage, these must be
repaired with paint to prevent corrosion.
Mechanical parts are positioned outside the tank and behind
the front panel. This enables easy access and replacement if
required.
Mechanical parts are surface-treated to prevent corrosion.
Moving parts are lubricated at the factory for the product’s life
expectancy. In extreme conditions (dust, sand and pollution),
inspection and maintenance will be imperative, and in some
cases replacements will be necessary. Check that the lub-
ricants are not washed or wiped away from the mechanical
moving parts.
7.1 CONTROL AND MONITORING THE GAS
SafeRing / SafePlus is a pressure-sealed system that nor-
mally does not require special inspections. However the gas
pressure on the pressure indicator should always be checked
prior to operation.
6.5 RONIS KEY INTERLOCK
To prevent unintended operations, all switches (except
switch-disconnector on switch-fuse combination and circuit-
breakers) have the possibility to be equipped with Ronis key
interlock type EL11AP.
6.6 PADLOCKING DEVICE
All switches except circuit-breakers are equipped with pad-
locking device as standard. For circuit-breakers, padlocking
device can be ordered as option.
6.7 SHORT CIRCUIT INDICATION
C, V, D and De-modules can be supplied with different types
of short circuit and earth fault indicators.
Ronis key interlock
Padlocking device