APD-NG250 product details and specifications:

General Characteristics 

• Model Name: APD-NG250 

• Engine Make: PSI 

• Engine Model: 13L 

• Alternator Make: Stamford 

• Control Panel Make & Model: DSE 7320 

• Frequency & Speed: 60Hz, 1800rpm 

• Enclosure Make & Model: AKSA AUL 71/72 

Genset Rating 

• 13L Engine / UCDI274K (Wnd-311) Alternator, 480/277V, PF 0.8: 250kW NG (375A) / 140kW LP (210.5A) 

• 13L Engine / HCI444D (Wnd-311) Alternator, 240/120V, PF 0.8: 250kW NG (752A) / 140kW LP (421A) 

• 13L Engine / HCI444D (Wnd-311) Alternator, 208/120V, PF 0.8: 250kW NG (867A) / 140kW LP (485.7A) 

• 13L Engine / UCDI274K (Wnd-17) Alternator, 600/347V, PF 0.8: 250kW NG (301A) / 140kW LP (168.4A) 

• EPA - Certified for Emergency Stationary Applications 

Engine Data 

• Manufacturer: PSI 

• Model: 13L 

• Displacement & Cylinders: 12.54L / 6 Cylinders 

• Engine Type: V-type, 4 Cycle 

• Engine Speed: 1800rpm 

• Engine Standby Power NG: 300 kW 

• Engine Standby Power LP: 181 kW 

• Aspiration: Turbo Charge Air Cooled 

• Compression Ratio: 9.75 : 1 

• Bore / Stroke: 5.0 in / 6.5 in 

• Governor Type: Electronic 

Electric System 

• System Voltage (dc): 24V 

• Battery Qty, Rating: 2 x 120Ah 

Cooling System 

• Radiator Cooling System Type: Closed Circuit 

• Coolant Capacity: 20.1 gal 

• Cranking Temperature: 169°F 

• Full Open Temperature: 190°F 

Exhaust System 

• Type: Water cooled manifold 

• Max. Allowable Back Pressure: 15 kPa 

• Max Turbine Inlet Temperature: 1382°F 

• Exhaust Gas Flow at Turbine Outlet Conditions: 1855 cfm 

Air Intake System 

• Combustion Air Required: 575 cfm 

• Max Intake Air Restriction (Clean Element): 3.0 kPa / 12 inH2O 

• Air Filter Type: Dry Paper Element 

Fuel System 

• Fuel Type: NG, LP Gas/Dual Fuel 

• Min NG Supply Pipe Size: 1 ¼” NPTF 

• Maximum EPR Rated Pressure: 6.9 kPa / 1.0 psi 

• Recommended Max Pressure: 2.7 kPa / 10.8 inH2O 

• Recommended Min Pressure: 1.7 kPa / 6.8 inH2O 

Fuel Consumption 

• Natural Gas, Standby Power (100%): 3418 cfh / 97 m³/hr 

• LP Gas, Standby Power (100%): 26 gal/hr / 97 L/hr 

Lubrication System 

• Oil Specifications: SAE 15W-40 Low Ash Gas Engine oil, API CD/CF or higher 

• Oil Pan Capacity, Min-Max: 28.0 - 31.7 Qts 

• Oil Filter: 2, Cartridge 

• Min - Max Oil Pressure at Rated Speed: 51 psi - 80 psi / 3.5 bar - 5.5 bar 

Alternator Data 

• Manufacturer: Stamford 

• Standards: BS EN 60034 

• Control System: PMG 

• A.V.R.: MX341 

• Voltage Regulation: ± 1 % 

• Insulation System: Class H 

• Protection: IP23 

• Rated Power Factor: 0.8 

• Stator Winding: Double Layer Concentric 

• Winding Pitch: Two Thirds 

• Winding Leads: 12 

• Telephone Interference: THF < 2 % 

• Waveform Distortion: No Load < 1.5 % 

• Maximum Over Speed: 2250 rev/min 

Battery Charger & Electrical System Data 

• Manufacturer: ComAp 

• Model: InteliCharger 

• Input Voltage: 85V ~ 264V AC 

• Output Voltage / Current: 13.8V Float / 4A pk 

Jacket Water Heater Data 

• Manufacturer: Hotstart 

• Model: CTM25110-N00 

• Input Voltage: 120V 

• Power: 2500W 

Controller Data 

• Manufacturer: DSE 

• Model: 7320 MK II 

Controller Features & Benefits 

• Microprocessor controlled, UL & NFPA110 Compatible 

• License free PC Software (Non-proprietary Software) 

• IP65 rating offers increased resistance to water ingress 

• Modules can be integrated to building management systems 

• Real time clock provides accurate event log 

• Four line back-lit LCD text display 

• Five key menu navigation, two wire start/stop at Auto mode 

• Front panel editing with PIN protection 

• Support up to three remote display modules 

• Configurable timers and alarms 

• Multiple date and timer scheduler 

• Integral PLC editor 

• 'Protections disabled' feature 

• Load switching (load shedding and dummy load outputs) 

• Fully configurable via DSE Configuration Suite PC Software 

• SCADA monitoring via DSE Configuration Suite PC Software 

Protection 

• Gen. Voltage – under / over 

• Gen. Freq. – under / over 

• Engine Speed – under / over 

• Engine Oil Pressure – low 

• Engine Temp – low / high 

• Battery Voltage – low / high 

• Weak Battery 

• Fail to Start / Stop 

• Charge Alternator Fail 

• Over Current & Load (kW/kVAr) 

• Unbalanced Load 

• Independent Earth Fault 

• Reverse Power 

• Loss of Speed Signal 

Instruments 

• Gen. Voltage (L-L/L-N) 

• Gen. Frequency 

• Engine speed 

• Oil Pressure 

• Water Temperature 

• Battery Voltage 

• Run Time 

• Phase Sequence 

• Power monitoring (kWh/kVAh/kVArh) 

• Power (kWh/kVAh/kVArh) 

• Power Factor 

• Generator Current 

• Generator Load (%) 

• Earth Current 

Enclosure Features 

• Heavy Duty Steel / Aluminum Structure 

• E-Stop on Enclosure 

• Control Panel Eliminated from Engine Vibrations 

• Standard Sound Attenuation Foam 

• Plastic Covered Corrosion Resistant Locks & Hinges 

• Internally Mounted Exhaust System with Rain Cap 

• Coolant Fill Cap 

• Removable Base Frame Lifting Hooks 

• Oil & Coolant Drain Ports 

• Easy Access for Maintenance 

Open Skid Gen-Set Dimensions 

• Length: 158 in 

• Width w/o lift hooks: 75 in 

• Height: 65 in 

• Dry Weight: 9000 lbs. 

Enclosed Gen-Set Dimensions – Level 1 

• Length: 206 in 

• Width w/o lift hooks: 77 in 

• Height: 90 in 

• Dry Weight: 13000 lbs. 

• Sound Pressure @ 7 meters: 78 dBA 

Enclosed Gen-Set Dimensions – Level 2 

• Length: 224.6 in 

• Width w/o lift hooks: 77 in 

• Height: 89.9 in 

• Dry Weight: 13400 lbs. 

• Sound Pressure @ 7 meters: 75 dBA 

Standard Features & Accessories 

• UL2200 Certification 

• Heavy Duty Steel Base Frame 

• PMG 

• Engine Jacket Water Heater 

• Battery and Battery Rack 

• Battery Charger 

• Anti Vibration Pads between Engine/Alternator & Base Frame 

• Critical Grade Silencer Inside Enclosure 

• Residential Grade Silencer Set for Open Skid Sets 

• Exhaust outlet rain cap and radiator fill cap 

• Sound Absorb Foam Material for Enclosure 

• Emergency Stop Button 

• Oil Drain Valve 

• Coolant Drain Valve 

• Jacket Water Heater Isolation Valves 

• Flex Fuel Lines 

• Secondary Lock-off Valve on Baseframe 

• Engine Manifold Cover 

• Turbocharger Cover 

• Protection Covers for Rotating Parts 

• Exhaust Insulation Cover 

• Enclosure DC Light 

• Operations Manual 

• 24 Months / 2000 hours Limited Standby Warranty 

Optional Accessories 

• Main Line CB (3 / 4 Poles – 80% / 100% rated) 

• Upsize Alternator 

• Anti-condensation Heater 

• Voltage Regulation ±0.5% w/MX321 AVR 

• Gas Regulator 

• NG / LP Auto Changeover Control System 

• Low Gas Pressure Alarm 

• Low Coolant Level Alarm 

• Oil Pan Heater 

• Oil Temperature Display on Controller 

• Manual Speed Adjust Rheostat 

• Manual Voltage Adjust Rheostat 

• Remote Annunciator Panel 

• Remote Control & Monitoring Panel 

• Advanced SMS Messaging 

• Control Panel Heater 

• Battery Disconnect Switch 

• Battery Heater 

• Battery Charger 10/20 Amp 

• Shunt Trip / Aux Contacts 

• Spring Anti-vibration Isolators 

• Automatic Transfer Panel (ATS) 

• 5 Years / 2000 hours Limited Comprehensive Warranty 

Codes & Standards 

• Designed and manufactured in a facility certified to ISO9001 standards 

• Designed and manufactured in a facility certified to ISO14001:2015 standards 

• AKSA Power Generation provides single source responsibility for the generator set & accessories 

• Prototype tested and production tested according to the UL test program 

• Meets NFPA70, 99, 110, 37 Level 1 when equipped with the necessary accessories and installed per NFPA standards (engine must be equipped with a fast start kit for NFPA110 Level 1 applications) 

product specifications:

product related documents:

APD-NG250.pdf