2.5 Genset Control System
- Equipped with basic indicating data such as electric current, voltage, oil pressure, coolant tank temperature, and time accumulator.
- Protecting functions include overspeed, low oil pressure, high temperature, and start failure after 3 attempts.
- Control functions for telecom driver, present driver, or stopper.
- Instantaneous stop function to prevent accidents.
2.6 Stipulated Criterion for Genset Operation
The following criteria describe correct genset usage to ensure the diesel engine drives the alternator effectively.
Appliance Conditions
- Absolute Pressure: 89.9 kPa (or 100 m above sea level)
- Environmental Temperature: 313K (40℃)
- Environmental Humidity: 60%
Power Ratings
- Rated Reserving Power (Limited Transmitting Power / LTP): The genset can continuously transmit power for 300 hours in a stipulated maintenance period and environment. Maximum power for 500 hours/year without overload or external electrical network.
- Permanent Reserving Power (Basic Power / PRP): Largest power in unlimited repetitive power sequence. A 10% capacity overload is available for one hour within a 12-hour stipulated period.
- Permanent Power (Continuous Power / COP): Continuous power supply in unlimited time per year within stipulated maintenance and environmental conditions.
Amendment of Genset Power
The rated power (LTP/PRP) must be amended under nonstandard conditions. Improper application may cause overheating, black smoke, frequency drop, and potential genset damage. Amendments apply to both engine and alternator. Environmental effects on the engine are more significant than specified conditions. Refer to the “Manual of Appliance to Amendment” for details.
4. Standard for Oil and Coolant
Diesel Fuel
Use diesel fuel complying with GB 252 standards and select appropriate brands according to workplace temperature (see Picture 1).
Lubricating Oil
Use lubricating oil compliant with GB 7631.3 standards. Select suitable viscosity brands according to workplace temperature. Ideally, use Cummins engine oil.
Coolant
- Composition: Water with anti-freeze and anti-rotting additives.
- Soft Water: Use clarified rainwater or clean, softened water with pH 6.5–8.
- Add appropriate anti-freeze and anti-rotting additive based on lowest ambient temperature.
- Even in high-temperature environments, coolant is necessary to prevent rust and air-brake damage.
- Consult FDK Technology Department for technical guidance.
- After mixing, add coolant to the water tank. Additives are hazardous; follow safety precautions.
5. Genset Installation
5.1 Ground Base Requirements
If no specific base is available, install on a horizontal concrete surface with rubberized pads supplied with the genset.
5.2 Generator Room Size
If the room is large enough, arrange the diesel genset, fuel tank, ATS, and control cabinet in the same room. Maintain at least 1 meter clearance between genset and accessories for inspection and maintenance.
5.3 Ventilation for Generator Room
- Provide sufficient fresh air for combustion and cooling; air pipelines may be installed to enhance ventilation. Ventilation area should be at least twice the radiator area.
- Engine exhaust must be directed away before reaching the radiator to prevent contamination and reduce cooling efficiency loss.
- Air intake should be placed behind genset to improve circulation.
- Wrap exhaust pipelines with heat insulation; place muffler and pipelines outside generator room if possible.
- Shutters must cover at least 70% of the area, allow airflow, and prevent entry of birds, rats, and insects. Use canvas or heat-resistant material to separate from radiator.
5.4 Exhaust Pipeline Installation
- Connect exhaust valve to bellows and then to muffler via steel pipelines.
- Fix pipelines with ceiling frames or ground supports if ceiling mounting is not possible.
- Prevent sprinkler or rainwater entry; install rain-proof caps if exhaust directs upward.
- Separate pipelines for multiple gensets to avoid breakdown.
- Exhaust pipe diameter behind muffler must match muffler outlet size.
