Form No. P- 070 Issue Date: March 2006Sheet 1 of 3
SAUDI ARAMCO PRE-COMMISSIONING FORM
DIESEL ELECTRIC GENERATORS
Equipment Type:User Reference:
Equipment Tag No:Equipment Description:
BI/JO No:Plant No. / Location:
Ref. Drawings & Documents:
Manufacturer:
Model No:Serial No:
Test Completion Date:
FIELD INSTALLATION CHECK LIST
VISUAL AND MECHANICAL INSPECTION
YesNo
1. Inspect for physical damage.
2. Compare nameplate rating and connection with specifications
and single line diagram.
3. Inspect for proper anchorage and grounding. engine cooling
and fuel system integrity.
ELECTRICAL TESTS
YesNo
1. A dielectric absorption test shall be made on the generator
winding with respect to ground. Record the polarization index.
2. Phase rotation test shall be made to determine compatibility
with load requirements.
3. Protective relay devices shall be tested in accordance with
the guide lines established in the commissioning procedures.
4. Engine shutdown features shall be function tested, low oil
pressure, over temperature, over speed and any other features as
applicable.
5. Perform vibration base line test. Amplitude vs. Frequency to
be plotted for each main bearing cap or non-drive end bearing, as
applicable.
6. Perform over potential test between winding to ground.
7. Record voltage frequency, load current, oil pressure and
coolant temperature during test. Voltage regulation, frequency
stability and maximum temperature rise shall be calculated.
8. Perform resistive load bank test at one hundred percent
(100%) name plate rating. Loading shall be 25% of rated for 30
minutes, 50% of rated for 30 minutes, 75% of rated for 30 minutes
and 100% for 2-1/2 hours.
Test Data
GENERATOR NAMEPLATE DATA
ManufacturerMfg.'s, location
Serial No.Mfg.'s., order number
Purchasers order no.Year of manufacture
VoltageCurrent
FrequencyPhases
Rating: KW/KVAPower factor
Insulation classWeight
SpeedFrame
N.D.E. bearing no.Temperature rise
Field Voltage Field Current
Field Resistance - ohms.
Generator winding resistance
Phase 1 to 2 ohmsPhase 2 to 3 ohmsPhase 3 to 1 ohms
Insulation Resistance @ 500 volts
Ambient Temperature =_______________
1 Min2 Min3 Min4. Min5 Min6 Min7 Min8 Min9 Min10 Min
megohms
______megohms______megohms______megohms______megohms______megohms______megohms______megohms______megohms______megohms______
Winding Temp., o
C0.010.020.030.040.050.060.070.080.090.0100.0110.0
Kt0.030.060.120.250.501.02.04.08.016.032.064.0
Correct for 50 o C. Rc= Kt x Rt; Rc = insulation resistance
corrected to 50 C, Rt = insulation resistance at temp "t", Kt =
insulation resistance temperature coefficient at temperature
"t".
Polarization Index = Insulation resistance @ 10 min / 1 min=
______megohms / ______megohms =_____
GENERATOR LOAD TEST DATA
TIME - MINUTES AND
PERCENT LOADSTART0
25%30
50%60
75%90
100%120
100%150
100%180
100%210
100%240
100%
PHASE CURRENTA
B
C
Voltage/FrequencyA-B
B-C
C-A
% VOLTAGE UNBALANCE
N. D. E. BRNG VIBRATION
N. D. E. BRNG TEMP
AMBIENT TEMP
WINDING TEMP
WitnessPDDInspectionOperation/MaintenanceContractor
Signature & Date
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