Mitsubishi S12R Service Manual

7 SCHEDULED MAINTENANCE
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
119
Pub. No. 291Y1-40720 Revision: 5
Rating Definition
*1: This condition constitutes a part of required conditions for warranty that MHIET agrees with the other party under Diesel Engine
Sales Contract with the party (hereinafter "Individual Contract"), however details of the warranty descriptions and the conditions shall
be referred to the Individual Contract. Atmospheric condition as per ISO 15550:2002 (JIS B 8003:2005)
(Barometric pressure: 100 kPa, ambient temperature: 298K, relative humidity: 30%).
*2: Average load factor (per day or year) shall be calculated as per the formula in ISO 8528-1:2018 ’average power output (Ppp)’.
*3: Refer to the Operation & Maintenance Manual for more information regarding inspection and maintenance including items and
descriptions.
*4: Warranty coverage shall be expired after major overhaul.
*5: For backup or emergency purpose engine, it is needed to have output margin of 5% or more for the customer demand output to
avoid engine stall by output tolerance (ISO 15550) and frequency variation etc.
*6: The DCP rating is consistent with the requirement of Tier III and Tier IV under the Uptime Institute.
*7: Conditions are consistent with the requirements under ISO 8528-1:2018.
This document is subject to change without prior notification.
Table 7-1 MHIET Generator Use Diesel Engine Rating Definition (1/2)
Symbol E P
Name of rated output (ISO 8528-
1:2018 description)
Critical power op-
eration (no ISO
equivalent)
Standby (normal power for
emergency) (ESP)
Prime (for portable generator) (long-hour power for emer-
gency)
Limited-time pow-
er (LTP)
Prime running power (PRP)
Overload operation (Rack set) N.A. (E) *5 N.A. (E) +10% (E)
Definition
For continuous use
for 300 hrs or less
at standby power.
Applicable exam-
ple: Data center
Rated power of an emergen-
cy generator as standby that
supplies power in case of a
failure of main power source
or commercial power.
Regular power
source of which the
operating hour is
limited to the short
period as specified
in the required con-
ditions for warranty
in this document.
This rating is used
for applications
that require over-
load operation with
standby.
For generators with variable load and
unlimited operating hours.
Required conditions for warranty *1
Load/operating
hour *2
Average load
factor/24 hrs
-
80% or less (100% for emer-
gency)
Overload operation
(≤ 110%) is limited
to 1 hr per 12 hrs.
80% or less overload operation (≤
110%) is limited to 1 hr per 12 hrs.
Over 90% load operation is limited to
3 hrs per 24 hrs.
Average load
factor/yr
100% or less
70% or less
*7
60% or less 100% or less *7 70% or less *7 60% or less
Operating
hrs/yrs *4
Unlimited 500 hrs or less *7 500 hrs or less *7 Unlimited *7
Overhaul inter-
val after delivery
<Maximum> *3
Top
4 yrs (Only the
case exceed 500
hrs by 4 yrs)
1000 hrs or 4
yrs whichever
comes earlier
4 yrs 4 yrs
3500 hrs or 4 yrs
whichever comes
earlier
4000 hrs or 4 yrs
whichever comes
earlier
Major
600 hrs or 8 yrs
whichever comes
earlier
2000 hrs or 8
yrs whichever
comes earlier
3000 hrs or 8
yrs whichever
comes earlier
1000 hrs or 8 yrs
whichever comes
earlier
7000 hrs or 8 yrs
whichever comes
earlier
8000 hrs or 8 yrs
whichever comes
earlier
Applicable example Emergency, Standby Seasonal peak cut
Daily peak cut, portable generator,
construction power supply

Mitsubishi S12R Specifications

General

Brand	Mitsubishi
Model	S12R
Category	Engine
Language	English