Man L23/30DF, Project Manual

Page: 339 / 392

Engine bmep (bar) * 1 st step 2nd step 3th step 4th step
L16/24 22.4/23.6 -20.7/22.8
IACS 33%
MDT 34%
IACS 23%
MDT 33%
IACS 18%
MDT 33%
IACS 26%
L23/30H 18.2 - 18.1 - 17.9
L21/31 24.9/27.3 -22.4/24.6
L27/38 23/25.3 -23.5/24.3
L28/32H 17.8 -17.9
* see project guide B 10 01 1 'main particulars', for actual bmep at nominel rpm.
Fig. 2. maximum allowable load application steps (higher load steps than listed are not possible as a standard)
Classification society Dynamic speed drop in
% of the nominal speed
Remaining speed varia-
tion in % of the nominal
speed
Recovery time until reach-
ing the tolerance band ±1
% of nominal speed
Germanischer Lloyd
≤ 10 % ≤ 5 % ≤ 5 sec.
RINA
Lloyd´s Register
American Bureau of Shipping
Bureau Veritas
Det Norske Veritas
ISO 8528-5
Fig. 3 Minimum requirements of the classification societies plus ISO rules
Regulating test and load responce performance
Load step on MAN Diesel & Turbo GenSets is to be tested according to following procedure.
Momentum speed variation (m) must not vary more than 10% max. deviation from steady speed 1 %. Perma-
nent speed variation (p) must not be higher than 5%.
MAN Diesel & Turbo
1699986-3.2
Page 3 (4)
Shop test programme for power plants
B 21 01 1
V28/32H, V28/32S, L28/32S, L27/38S, L23/30S, L21/31S, L16/24S
2016.03.17