Assembly Instructions / Power2 500-M
4 Installing the low-pressure stage /
© Copyright 2020 ABB. All rights reserved. HZTL455311P0009_EN Rev.A July 2020
4 Installing the low-pressure stage
The fixing screws for fastening the low-pressure stage are not included in the ABB scope of
delivery and must be provided by the enginebuilder.
General information
Only with one-piece foot
Subject Related requirements
Material of fixing elements
(for securing low-pressure stage on
bracket)
ISO strength class 10.9 and 12.9 according to DIN/
ISO 898
Washers under the screw head or nut Use hardened washers,
thickness ≥15% of the nominal thread diameter
Dimension a Height of low-pressure stage foot, see Chapter4.5
Dimension b Thread set deeper in bracket, see Chapter4.5
Depth of thread c ≥1.5 times the nominal thread diameter
Coefficient of friction 0.12 (lightly oiled)
Thread sizes M20 (one-piece foot)
M24 (two-piece foot)
Table6: General information about fastening the low-pressure stage
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