CUSTOMER : YANMAR CO.,LTDPROJECT NAME : CHINA CHENXI SHIPYARDREFERENCE NO. : APP-2007RAL422-Rev.1DATE ISSUED :CLASS : LRS

(TEL:82-52-202-6613, FAX:82-52-202-6995)

SPECIFICATIONfor

SYNCHRONOUS GENERATOR( 2750KVA, 10P, 445V, 60Hz, 2SETS )

http://www.hhi.co.kr

Date Issued Contents

HYUNDAI HEAVY INDUSTRIES CO., LTD

Rev. Preparedby

Checkedby

For Working

Electro Electric Systems

21-Sep-07 For Approval0

1 31-Dec-07 O.S.SONG

-

Checkedby

H.W.KIM

Approvedby

H.W.KIM

21-Sep-07

-

-

-

O.S.SONG

FOR WORKING

1 CAUTION

2 SHAFT CURRENT FOR GENERATORS

3 SPECIFICATION OF GENERATOR : HFJ7 714-14E-Rev.2

4 PROCEDURE OF A.C GENERATOR TEST : MG TL 2

5 SECTIONAL DRAWING : 3G-001142-Rev.0

6 OUTLINE OF GENERATOR : 3Y-000045-Rev.1

7 DIMENSION OF SHAFT : 3Y-000046-Rev.1

8 TERMINAL BOX ASS'Y : 3G-001143-Rev.0

9 AVR CONNECTION DIAGRAM : 3G-002144-Rev.0

10 TERMINAL BLOCK DIAGRAM : 3G-002145-Rev.0

11 AIR COOLER : 3M-039596-Rev.0

12 BEARING INSULATION : 4M-013274-Rev.1

13 REFERENCE VALUE SETTER : 3M-053674-Rev.0

14 DCT : 4G-000403-Rev.0

15 DROOP CHARACTERISTIC OF SYN. GENERATOR : 4G-000372-Rev.0

16 D/G SET PLAN VIEW : 4M-057762-Rev.1

CONTENTS

A. Phase SequencePhase sequence of these generators are U→V→W regardless of rotating direction ofprime mover.Please connect all cables as shown in below figure 1.

Generator Side

※ MSBD : Main Switch Board

B. Manual SynchronizingPlease be careful at synchronizing of each generator during on board test or normaloperating as follows.

1) Check that incoming generator voltage level and frequency in its no-load condition is correct.2) After rotating the synchronizing switch to the "ON" position, please check the condition of the synchroscope pointer, and adjust the speed of the incoming Engine/Generator until it is rotating slowly to clockwise direction (no more than 1 revolution / 20 seconds).3) The incoming generator breaker should be closed as close to the 12 o'clock position as possible.

WarningIf generator breaker is closed at conditions other than the above, thegenerator excitation system (Diodes, Varistors, Transformer …) & rotoror stator can be damaged by transient reactive current.

< Figure 1 >

CAUTION

MSBD Side

U

V

W

U

V

W

A. Shaft Current1. The shaft voltage is a high frequency voltage generated due to magnetic unbalance

of usually 1 volt or less and rarely several volts. When a shaft current by thisvoltage flows the shaft and journal part are tarnished and in the worst case, sparking results in minute black spots.There is a possibility that the oil film is broken locally developing a burn-out trouble.

2. Generally, in case of small capacity machines where no shaft voltage is generated,the bearing has no provision for insulation. In the case of large capacity machinesand high voltage machines that have possibility to generate the shaft voltage,the bearing stand is insulated from the bed plate on each side, and the piping withassociated with the bearing is also insulated.

3. When disassembling or assembling, be sure to measure the insulation resistance.The value of 1 to 3 ㏀ will be satisfactory.

4. It is generally said that shaft voltage for sleeve bearing has the limit as follows.

＜ 500 mV : Harmless500∼1000 mV : A detrimental shaft current may possibly flow.＞1000 mV : Bearing may be damaged in a week to a year.

(Unless insulation is provided.)

B. Our GeneratorsWe apply followings as our internal standard for bearing insulation.We are sure and guarantee the safety of bearing by applying this standard to all ourgenerators. And the possible defect by shaft voltage can be easily found out by checkthe abnormal bearing temperature rise.

1) Below HF. 630 FRAME generators : The bearing is not insulated becausethe shaft voltage is lower than 500mV.

2) HF. 710 FRAME generators and over : The bearing is insulated becausethe shaft voltage over 500mV maybe generated.

3) High voltage machines (over 3,000V) : The bearing is insulated becausethe shaft voltage over 500mV maybe generated.

SHAFT CURRENT FOR GENERATORS

[2007-12-31]

USE DIESEL ENGINE GENERATOR QUANTITY / SHIP 2 ST/SHIP

TYPE OF ENCLOSURE IP 44 APPLIED CLASS LRS

COOLING SYSTEM AIR TO WATER AMBIENT TEMP. 45 ℃

EXCITING SYSTEM SELF EXCITING BRUSHLESS INSULATION CLASS F

STRUCTURE OF ROTOR CYLINDRICAL ROTOR TEMPERATURE RISE F

COUPLING METHOD FLEXIBLE COUPLING(FLANGE) APPLIED UNIT METRIC

TYPE HFJ7 714-14E TYPE OF BEARING SINGLE SLEEVE BEARING

OUTPUT CAPACITY 2750 KVA LOCATION

RATING CONTINUOUS SIZE Φ210*L250 Φ150*L180

PHASES,WIRE,CONN 3 Φ, 3 W, Y (DAMPER WINDING) OIL QUANTITY 8.1 liter 5.5 liter

VOLTAGE AC 445 V LUB SYSTEM SELF LUBRICATION SELF LUBRICATION

CURRENT 3567.9 A OIL GRADE ISO VG 32

FREQUENCY 60 HZ INLET PRESSURE - bar

POLES 10 P INLET TEMP. Max - ℃

SPEED 720 RPM

POWER FACTOR 0.8 LAGGING CAPACITY 150 KW

GD²/ J 1293.2 Kg.m²/ 323.3 Kg.m² FLUID SEA WATER

ROTOR WEIGHT 4169 Kg QUANTITY 37 m³/h

TOTAL WEIGHT 11.0 ton INLET TEMP. 36 ℃

TEMP RISE 4 ℃

OVERCURRENT 150 % / 30 sec PRESSURE DROP - Kg/cm²

VARIATION OF GENERATOR VOLTAGE ± 2.5 % DRY WEIGHT - Kg

OVERSPEED 120 % / 2 min

VOLTAGE ADJUSTMENT ± 5.0 % WINDING TEMP. PT100 OHM ×2EA/PHASE

MOUNTING METHOD B20 BEARING TEMP. ROD TYPE + PT100 OHM/BRG

COOLING AIR TEMP PT100 OHM × 2EA/GEN

LEAKAGE DETECTOR N/C CONTACT : 2EA/ST

Xd 265 %(UNSATURATED) T' d 0.1483 Sec.

X' d 29.2 %(SATURATED) T'' d 0.0034 Sec. * LOCATION OF TERMINAL BOX.

X'' d 15.2 %(SATURATED) Ta 0.0370 Sec. (VIEWD FROM PRIME MOVER)

ra 1.17 % * CABLE ENTRY

* SPACE HEATER

*W.T.D ALARM SETTING POINT * PAINTING COLOR

- ALARM : 145 ℃ * LOCATION OF AIR COOLER FLANGE

- TRIP : 150 ℃ (VIEWD FROM PRIME MOVER)

*DCT : CS-9XR, 5000/5A, 5P10 * ROTATING DIRECTION OF GENERATOR

(VIEWD FROM PRIME MOVER)

1.THE SPECIFICATION OF * MARK SHOULD BE INFORMED ON

REVISED BY OWNER COMMENTS YOUR APPROVED DRAWING

REVISED BY OWNER COMMENTS HFJ7 714-14E -REV 2

RW-W230-158-0 A4(210mm X 297mm)

Y.S.CHOI - H.W.KIM2007.09.21 O.S.SONG

07.10.04

07.12.31

N O T E

REV CONTENTS DATE

SPECIFICATION OF GENERATOR

SPECIFICATION

CHARACTERISTICS

BEARING

AIR COOLER

DRIVED END NON-DRIVED END

LEFT SIDE

C.C.W

DETECTING SYSTEM

LATER

2.5 G 7/2

1PH,220V,1000W

5

1

2

3

4

REACTANCE & TIME CONSTANT

(CALCULATED VALUE)

CONFIRMED ITEM BY OWNER

DATE DESIGN CHECKED CHECKED APPROVED

REMARK

RIGHT SIDE

TEST PROCEDURE OF A.C SYNCHRONOUS GENERATOR MG TL 2 1 / 1

No Test Item Procedure Criterion Remarks

1 TemperatureRise Test

The generator will be operated withrated current by equivalent loadingmethod of IEEE 115 or zero(0) powerfactor method.Temperature rise of each windingwill be measured by resistance method.

Stator : ＜104℃Rotor : ＜109℃

Only one(1) setper ship*Cooling Water Temp = 36 C

2 Over load TestThe generator will have to withstand50% excess of rated current for 30seconds after temperature rise test.

Without damagevisually

Only one(1) setper ship

3 Over speed Test

Over speed test will be carried outfor 120 seconds with 1.2 times therated speed under no excitationcondition.

Without damagevisually

4 High VoltageTest

The test voltage with commercialfrequency will be applied to eachwinding for 60 seconds.

Stator : 2,000 VRotor : 1,500 V

5Measurement of

InsulationResistance

Insulation resistance of each separatewinding will be measured withDC megger before and afterhigh voltage test.

More than 5 ㏁

6Measurement of

WindingResistance

Each winding resistance will bemeasured by bridge method.

Only one(1) setper ship

※ Above test items & procedure are satisfied with LRS requirement. (Machines having rated output more than 1,300kVA and using air cooler )