Fitting The Earthing Device; Design, Application And Inspection Of The Earthing Device Accessories - Siemens NXAIR Operating Instructions Manual

Fitting the earthing device

26 Fitting the earthing device

26.1 Design, application and inspection of the earthing device accessories

Max. short-circuit current and
max. short-circuit duration
Diameter of the fixed contacts in the bushings
Rated normal current of feeders
Fig. 672: Earthing device and earthing rod
370
INFORMATION
Read and understand these instructions before attempting operating works.
DANGER
Impermissibly high voltage and current
Inappropriate use of the earthing device accessories will result in impermissibly
high voltage and current.
Use the earthing device exclusively for the maximum permissible short-
circuit current and the maximum permissible short-circuit duration.
Do not use the earthing device for short-circuit tests or purposes causing
similarly high voltages and currents.
Perform diligent inspection of the earthing device accessories before
each application.
NXAIR / ≤ 40 kA
Panel width 600 mm
= 25 kA / 1 s
40 mm
≤ 1000 A
(1) Coupling of the earthing rod
(2) Limiting ring
(3) Hand area
(4) Cross bar
(5) Earthing clamp
(6) Screw handle of the earthing clamp
(7) Spindle of the earthing tulip
(8) Earthing tulip
Panel width 800 mm
= 25 kA / 1 s
60 mm
1250 A
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