Silent Automatic Generator
Milestone silent automatic generator is an enclosed standby genset built for uninterrupted backup power. Its multi-layer acoustic construction suppresses operational noise, while integrated AMF and ATS hardware enables hands-free power restoration once mains supply fails. Available from 10 to 2500 kVA, the unit follows ISO 8528 standards and supports optional compliance certifications for global industrial and commercial projects.
A silent automatic generator is a diesel power unit fitted within a sound-attenuating enclosure with an AMF controller. The system initiates startup within 15 seconds once grid power fails and restores electrical power without manual operation. Representative noise rating: 62 dB(A) at 7 meters for selected sound-attenuated configurations, depending on model and operating load - comparable to typical face-to-face conversation. Standby output ranges from 10 to 2500 kVA, built in line with ISO 8528 and available with CE machinery directive compliance.
Noise Control: Open-Set Noise Reduced to 62 dB(A) on Selected Models
An open-frame genset runs at roughly 95 dB(A) under full load. Our enclosed design lowers noise levels through multi-layer acoustic construction. Three core components deliver noise reduction: 50 mm mineral wool absorbs mid-frequency combustion noise; acoustic louvers attenuate airborne noise while maintaining required ventilation airflow; anti-vibration mounts limit structural noise transfer to the concrete base. Weather-resistant seals close enclosure gaps to cut high-frequency noise leakage. The electrical enclosure carries an IP23 ingress protection rating.
AMF Auto-Start: Grid Loss to Full Power in 15 Seconds
When the grid drops, the AMF controller detects voltage loss within 3 seconds, energises the fuel solenoid, cranks the engine, and transfers load via the ATS contactor. Total sequence: under 15 seconds from utility failure to load transfer, depending on engine, controller and ATS configuration.
AMF decides; ATS switches.
The backlit LCD on the control panel displays oil pressure, coolant temperature and real-time kW load. Navigate fault history using physical cursor buttons on the unit interface.
Fuel Efficiency and Runtime
For reference: At 75% load, a 250 kVA configuration consumes 52 L/h of EN 590 diesel. The base-mounted welded day tank holds 1,200 L, delivering approximately 23 hours of runtime at this 75% load condition; actual runtime varies with load profile and site conditions. A water separator within the return fuel line protects the fuel injection system from water and particulate contaminants.
Compliance and Standards
|
Standard |
Scope |
|
ISO 8528-1 |
Generating set performance and testing |
|
CE |
EU Machinery Directive safety, applicable configurations |
|
EPA Tier 3 / EU Stage IIIA |
Emission options, subject to engine selection and destination market |
|
IEC/EN 60034 |
Rotating electrical machines; alternator available with IP23 protection, configuration-dependent |
Milestone manufactures this silent automatic generator to deliver reliable backup power for commercial and industrial facilities worldwide.
FAQ
Q: How loud is a silent automatic generator at 7 meters?
A: Representative sound level reaches 62 dB(A) at 7 m under full load for selected enclosed models. Open-frame units typically register 90 to 95 dB(A). Noise performance changes with genset size, enclosure design and operating load.
Q: What is AMF vs ATS?
A: AMF (Automatic Mains Failure) is the controller that detects grid loss and triggers the startup sequence. ATS (Automatic Transfer Switch) is the switching contactor that transfers building loads. AMF decides; ATS switches.
Q: How fast does the unit start after grid failure?
A: Under 15 seconds from utility failure to load transfer, depending on engine, controller and ATS configuration. Cold-start performance depends on battery capacity, ambient temperature, engine design and preheating systems.
Q: What fuel does a silent automatic generator use?
A: Compatible with EN 590 diesel for EU markets, ASTM D975 No. 2-D for North America, or equivalent diesel fuels. As reference consumption: 52 L/h for a 250 kVA unit at 75% load, 12 L/h for a 60 kVA unit at 75% load. Actual consumption varies by model and load.
Q: What maintenance does the unit need?
A: Maintenance intervals follow the selected engine manufacturer's requirements. Typical schedules may include an initial oil service after the first 50–250 operating hours, followed by periodic inspections and servicing. Major overhaul cycles differ by engine model and running environment.
If you have any questions about product specifications or customised solutions, reach out to the Milestone technical team for tailored support.
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