AY688 Yuchai 500 kW Prime Power Diesel Generator Set with 625 kVA and YC6TD840-D31 Engine

The AY688 diesel generator set is a heavy-duty industrial power unit developed by Aike Power, equipped with authentic Guangxi Yuchai YC6TD840-D31 V6 engine, delivering stable prime power of 500kW (625kVA) and emergency standby power up to 550kW (688kVA) at 50Hz / 1500RPM.

This 3-phase 4-wire genset supports multiple adjustable voltage options including 400/230V, 380/220V, 415/240V and 440/254V, adaptable to global industrial power grid standards. Two structural versions are available: open frame type and soundproof silent canopy type, with full optional configurations including Deepsea intelligent controllers, ATS transfer switches, external fuel tanks and engine preheating systems.

Designed to operate steadily under ambient temperature ≤40℃ and altitude ≤1500m, the AY688 Yuchai generator is widely applied as prime power for large manufacturing factories and standby emergency power for industrial parks, commercial buildings and public facilities. All units pass strict full-load factory testing, comply with ISO 8528 and CE standards, and come with unified global warranty policy.

• Power engine: Yuchai YC6TD840-D31 4-cycle V6 diesel engine
• Cooling system: 40℃ adaptive water radiator, belt-driven cooling fan with safety guard, 24V charging alternator
• Alternator: Single bearing brushless alternator, IP23 protection grade, Class H/H insulation; optional Stamford, Engga, Leroy Somer, Mecc Alte
• Vibration isolation: Integrated skid base + heavy-duty shock absorbers
• Filtration system: Dry air filter, fuel filter, engine oil filter
• Safety device: Main circuit breaker
• Control system: Standard Deepsea DSE6020 AMF control panel with PMG
• Starting system: Four 12V storage batteries, battery rack & connecting cables
• Exhaust assembly: Ripple flex exhaust pipe, exhaust siphon, flange and industrial muffler

1. Engine options: Water jacket preheater, water separator, oil preheater, auxiliary oil pump
2. Fuel system: Daily base fuel tank, external large fuel tank, auto fuel filling system, fuel level sensor
3. Control system: DSE7320 remote AMF panel, DSE8610 multi-unit parallel controller, ATS auto transfer switch, ABB breaker
4. Alternator upgrade: Anti-condensation heater, winding temperature sensor
5. Structure: Soundproof silent canopy, mobile trailer base

DSE7320 Controller

DSE8610 Parallel Controller

Base automatic mains failure module for single unit operation, equipped with backlit LCD screen to monitor speed, frequency, voltage, running hours and real-time fault alarms. Supports auto start/stop, complete engine protection, programmable via front panel or DSE PC software.

Upgraded single-unit control panel with USB, RS232 and RS485 communication ports, remote PC monitoring, expanded event log and optimized engine wear protection, suitable for medium industrial factory power supply.

Professional synchronizing control module for parallel system, supports synchronous linkage of up to 32 generator sets with automatic load sharing. Records 250 pieces of operation event logs, integrates full protection, alarm sounder and remote communication expansion, ideal for large power stations and multi-unit factory projects.

Original Yuchai YC6TD840-D31 V-type 6-cylinder engine adopts turbo intercooled technology, electronic governor, low fuel consumption and low failure rate. It can run continuously under full load for 24 hours, perfectly matching long-hour prime power demand of manufacturing plants.

Standard large-flow water radiator with safety fan guard, stable full-load operation under tropical 40℃ environment; optional engine preheating system for low-temperature regions, wide climate adaptability for global projects.

IP23 single-bearing brushless alternator with Class H insulation, 96.3% high efficiency, steady-state voltage fluctuation ≤±1%, low THF value, no carbon brush wear, reducing later maintenance frequency and cost.

Three Deepsea controller options for single unit auto start, remote monitoring and multi-unit parallel operation, supporting ATS automatic mains switching, remote cloud communication and centralized network management.

Open frame type for factory fixed installation; soundproof silent canopy for downtown commercial areas. Support customized fuel tank, exhaust system, anti-corrosion coating and voltage specifications according to project requirements.

All AY688 gensets undergo 72-hour full-load factory test before delivery, comply with ISO 8528, CE, ISO 3046, IEC 60034 international standards, with complete export certification documents.

The AY688 500kW Yuchai generator set serves as both prime continuous power and emergency standby power for multiple industrial & commercial sectors:

1. Large Manufacturing Factories & Listed Industrial Plants (main prime power)
2. Industrial Parks & Factory Zones (multi-unit parallel power station)
3. Commercial Malls, Office Complexes & High-Rise Buildings (fire/elevator backup power)
4. Hospitals & Medical Institutions (life-support equipment emergency power)
5. Data Centers & IDC Computer Rooms (uninterrupted backup power)
6. Mining Zones & Remote Construction Sites (off-grid self-provided power)

Aike Power implements unified three-judgment warranty rules for all AY688 gensets; the earliest reached standard shall be the warranty expiration date:

A. 15 calendar months counted from the delivery date to the first buyer;

B. 12 months after complete on-site installation of the genset;

C. 1000 accumulated running hours of the unit.

Within valid warranty period, we provide free replacement of original factory spare parts for failures caused by manufacturing defects. Damage from improper operation, lack of routine maintenance, natural wear and external impact is excluded from free warranty service. After warranty expiry, we supply genuine spare parts at factory cost price and offer global remote technical guidance.

A1: 500kW (625kVA) prime power is rated continuous output for daily long-hour production operation; 550kW (688kVA) standby power is short-time emergency peak power for power outage backup, not suitable for long-term full-load continuous use.

A2: Yes. The unit is equipped with a heavy-duty water radiator matched for 40℃ ambient temperature, belt-driven large cooling fan to avoid overheating shutdown under full load in hot climate areas.

A3: Yes. You can upgrade to optional Deepsea DSE8610 parallel controller, which supports synchronous linkage of up to 32 units with automatic load distribution, widely used for large factory self-built power stations.

A4: Standard rated voltage 400/230V; optional 380/220V, 415/240V, 440/254V to match different national grid standards.

A5: Open frame type has smaller size and lower cost, suitable for indoor factory fixed installation; soundproof canopy type adds 3mm thick silent enclosure to reduce running noise, applicable to downtown commercial and residential surrounding projects.

A6: Standard configuration is Deepsea DSE6020 AMF controller; DSE7320 and DSE8610 are optional. We can also provide ComAp, DEIF and Smartgen controllers as customized requests.

If you need a 500kW prime power generator for factory continuous production or emergency standby power for commercial projects, contact Aike Power now. We provide free power load calculation, customized configuration drawing and competitive factory-direct quotation within 24 hours, with full global after-sales support.