Rating definitions and conditions, Specifications – Milton CAT D125-6 125 kW Spec Sheet User Manual
Page 4

LEHE5521-01
4
S T A N D B Y
1 2 5 - 1 5 0 k W
P R I M E
1 1 4 - 1 3 5 k W
6 0 H z
Standby – Applicable for supplying continuous electrical
power (at variable load) in the event of a utility power failure.
No overload is permitted on these ratings. The generator is
peak rated (as defined in ISO8528-3).
Prime – Applicable for supplying continuous electrical power
(at variable load) in lieu of commercially purchased power.
There is no limitation to the annual hours of operation and
the generator set can supply 10 percent overload power for
1 hour in 12 hours.
RATING DEFINITIONS AND CONDITIONS
GENERATOR
Voltage regulation . . . . . . . . . . . . . . . . . ± 0.5% 3-phase at steady
state from no load to full load
Frequency . . . . . ± 0.25% for constant load, no load to full load
Waveform distortion . . . . . . . . . . . . . . . . . . THD < 4%, at no load
Radio interference . . . . . . . . . . . . . . Compliance with EN61000-6
Telephone interference. . . . . . . . . . . . . . . . . . . TIF < 50, THF < 2%
Overspeed limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2250 rpm
Insulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class H
Temperature rise . . . . . . . . . . . . . . . . . . . . . . Within Class H limits
Available voltages . . . . . . . . . . . . . . . . . . . . . . . . 277/480, 266/460,
120/240, 127/220, 120/208, 347/600
Deration . . . . . . . . . . . . . . . Consult factory for available outputs
Ratings . . . . . . . . . . . . . . . . . . . . At 30° C (86° F), 152.4 m (500 ft),
60% humidity, 0.8 pf
ENGINE
Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Caterpillar
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-cycle
Bore – mm (in) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105.0 (4.13)
Stroke – mm (in) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127.0 (5.00)
Governor Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic
Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G2
Piston speed – m/sec (ft/sec) . . . . . . . . . . . . . . . . . . . . . 7.62 (25.0)
Engine speed – rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800
Air cleaner type . . . . . . . . . . . . . . . . . . . . . Dry, replaceable paper
element type with restriction indicator
D125-6 – C6.6 ACERT
Aspiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ATAAC
Cylinder configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . In-line 6
Displacement – L (cu in). . . . . . . . . . . . . . . . . . . . . . . . . . . 6.6 (404)
Compression ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.3:1
Max power at rated rpm – kW (hp)
Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161.6 (217)
Prime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.6 (194)
BMEP – kPa (psi)
Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1633 (237)
Prime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1461 (212)
Regenerative power – kW (hp) . . . . . . . . . . . . . . . . . . . . . 14.9 (20)
D150-8 – C6.6 ACERT
Aspiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ATAAC
Cylinder configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . In-line 6
Displacement – L (cu in). . . . . . . . . . . . . . . . . . . . . . . . . . . 6.6 (404)
Compression ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.3:1
Max power at rated rpm – kW (hp)
Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171.3 (230)
Prime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154.4 (207)
BMEP – kPa (psi)
Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1731 (251)
Prime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1560 (226)
Regenerative power – kW (hp) . . . . . . . . . . . . . . . . . . . . . 14.9 (20)
CONTROL PANEL
• Heavy duty sheet steel enclosure with lockable hinged door
• Vibration isolated from generating set
• LCD display
• AC metering
• DC metering
• Fail to start shutdown
• Low oil pressure shutdown
• High engine temperature
• Low/high battery voltage
• Underspeed/overspeed
• Loss of engine speed detection
• 2 spare fault channels
• 20 event fault log
• 2 LED status indicators
• Lockdown emergency stop push button
SPECIFICATIONS