Maintenance
58 9229 9992 176 0D
2013-07-08
Interrupter service life
If switching operations occur frequently under overload or short circuit, the service
life of the vacuum interrupters may be reached prematurely.
Replace the interrupters after reaching the maximum permitted operating cycle
number of 10 000 mechanical or electrical load setting changes (up to the rated
current).
Short-circuit deactivations were proven as per IEEE C37.013 under various
conditions.
Accessories and spare parts
Replacing spare parts To ensure that the device operates reliably, spare parts must be replaced only by
trained and certified personnel.
Fig. 74 Accessories available for order
Always specify the vacuum circuit-breaker's type and serial no. (see “Rating plate”
on page 34) when ordering spare parts.
CAUTION
Risk of injury!
The vacuum circuit-breaker should be taken out of the switch cabinet or
switchgear for servicing.
Separate vacuum circuit-breakers from the control feed voltage or switch it off
and release low-voltage plug or clip connection.
Accessories/spare part Order no. Comments
Operating instructions 9229 9992 100
Hand crank 3AX1530-2B
Klüber lsoflex Topas L32 lubricant 3AX1133-3H 180 g
3AX1133-3E 1 kg
Shell Tellus lubricant 3AXl 133-2D 1 kg tin
Vaseline (contact grease)
e. g. Atlantic white, Atlantic Mineralölwerk GmbH
Pasty consistency, flame point
210 °C, low acid
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