Vibration Limits And Measurements - Man L23/30DF Project Manual

MAN Diesel & Turbo
3700395-8.3
Page 1 (2)
L23/30DF, L28/32S-DF, L28/32S, L27/38S, L23/30S, L21/31S, L16/24S, L28/32DF,
GenSet
Measure- Description
ment
point
1 TC fore
2 Governor/TC
aft
3 Front support
4 Aft support
Engine: VDI 2063T
Alternator: ISO 8528-9, DIN 6280-11
Note: All measurements are specified as mm/s r.m.s.
Date
2017.12.14

Vibration limits and measurements

V28/32H, V28/32S, L16/24, L21/31, L23/30H, L27/38, L28/32H
Limit Measure- Description
ment
point
18 5 Aft
bearing
18 6 Alternator
cooler
18 7 Intermediate
bearing
18 8 Alternator foot
Running Load
Hours %
100
100
100
Limit Measure-
ment
point
alternator 18 9
25 10
18 11
See 12
below *
* Alternator
P ≤ 1250 kVA
P >1250 kVA
Value 1 or 2 are depending on alternator make
Vertical (z)
1 2 3 4 5
Crosswise (y)
Longitudinal (x)
D 10 24 0
Description Limit
Alternator foot See
below *
Automation box 25
A-side
Automation box 25
B-side
T&P panel 25
Value 1 Value 2
20 24
18 22
6 7 8 9 10 11 12