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Standards Cummins Genset Technical Maintenance-1

A. Daily Maintenance
B. Genset Maintenance (Class I)
C. Genset Maintenance (Class II)
D. Genset Maintenance (Class III)
12. List about How to Fix a Common Breakdown
1. Preface
Dear Customer: FDK Co.‟s Cummins diesel gensets, adopt Sino-American Cummins engines and American Marathon alternators (or Britain Stamford alternators or Sino-American Kaijielie alternators).This manual supplies you the guidance to the installation, appliance and safeguard of the diesel gensets. Please read it earnestly. If something problem remains please contact the technical dept. or the after-sale dept. of FDK. No matter whether you are an overseas customer or not, you can send your partners to be trained free in our company.
2. Permanence and Technical Parameter
2.1 Definition of Types
Character/Code Name
YT1—Single bearing trailer type /YT2—Double bearing trailer type
A—Automatic /B—Hood type/Yz—Vehicle carried type /T—Special genset /J—Sound-proof type/Blank—Basic mode
Type Code
E—Electric injection type /P— Particular type /G—Gas mode /Blank—Basic mode
Rated Reserving Power (LTP): kw
Short for “Genset”
Short for “Cummins”
Short for “Fudiankang”
2.2 Basic Parameter
* 400v/230v, 3-phrase, 4 line, neutral point contact
* 50Hz/60Hz
* Rated power factor: 0.8 (lagging)
* Total wave distortion:﹤ 5%
* Telephone influenced factor (TIF):﹤50%
* Telephone homophonic factor (THF):﹤2%
* The electromagnetic compatibility accords with: BS 800 Standard/ VDE Grade: Grade N
Voltage Features:
 Voltage United Scope (VUs): ±5%
 Sudden United Voltage Deviation (SUdyn):≤-15%~≤+20%
 Time of Voltage United (TU): ≤4s
 Steady Voltage Deviation (Sust):≤±1%
 Voltage Unbalanced Rate (Su 2.0 ): 1%
Frequency Feature:
2008-06-22
122
 Frequency Falling (Sft): ≤3%
 Steady Frequency Belt (Bf):≤0.5%
 Sudden Frequency Deviation (Sfdyn): -7%~+10%
 Time of Frequency Regained (Tf.de): ≤3S
 Relative Frequency Compatible Deviation (af):2%
2.3 Diesel Engine Performance Parameter
Type
 Cummins (Including Cummins NTA, KTA19,KTA38, KTA50) Series: 4-stroke direct injection diesel engine
In-letting Gas system:
 Wasted Gas Turbocharger
 With turbine presser for wasted gas from air inter-cooler
Structure
 Crankshaft: Alloy steel structure, whole-bearing, axel-neck and circular angle under quenching.
 Cylinder body: Alloy steel casting iron brake with alternative wet cylinder hood
 Piston: Alloy steel with crystal silicon, first ring inserting mill and cooled oil
Lubricating System:
 Adopting alter-current oil pump, optimizing, oil capacity in engine
Cooling System:
 Adopting inner gear centrifugal pump to strengthen cooling which effects well.
 The circular mode water filter prevents rusting and rotting so as to remove impurity efficiently.
Fuel System:
The PT fuel system with its Cummins patent technique has features of high pressure injection, with sufficient fuel.
Filtering System
 The dried air filter is equipped with air resistance indicator.
Starting System:
 The auto-motor has 24v direct current with speedy starting capability.
Cooling Starting Performance:
 Without aiding equipment, its lowest starting cold temperature is below 7℃
2.4 Synchronous Alternator Technical Data:
Form and Structure:
 Brushless magnetic exciter, 3-phrase revolving rectification unit, with over voltage protection system.
 The low electrical reactance for lowering harmonious fluctuation.
 The self-excited adjustment controller is to adjust the generator‟s transmitting capability.
 Stator winding covered by oxygen insulated paint, rotor, magnetic driver, PMG (permanent magnetic generator), dipped by polyester clear paint, with its feature of moist-proof, oil-proof, acid-proof and insulation, etc.
 Iron core of superior silicon steel flakes.

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