Siemens NXAIR Operating Instructions Manual page 311

Air-insulated switchgear ≤ 17.5 kv / ≤ 40 ka / ≤ 4000 a busbar current
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1
Fig. 569: Right part of partition (1)
Install the heater support (5).
Fix the heater support (5) by screwing the nuts (6) hand-tight:
2 bolts M8x20 (6)
Tighten the fixing bolts all around with a tightening torque of 25 Nm.
Install the heater (7).
Fix the heater (7) by screwing the nuts (8) hand-tight:
2 nuts M8 (8)
Tighten the fixing nuts (8) with a tightening torque of 25 Nm.
5
Fig. 571: 2 bolted joints on the heater
110-0134.9 / 14
Accessing the connection compartment through the front
2
support
NXAIR / ≤ 40 kA
3
Fig. 570: Left part of partition (3)
8
7
6
Fig. 572: 2 bolted joints on the heater
4
311

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