According to GB2820-90 and other relevant national standards, the noise of ordinary generators of silent generator sets can be reduced to 75db (A) (measured at L-P7m), and the noise of ultra-low noise generators can reach 73db (A) (measured at L-P7m); The equipment and assembly technology of the silent generator set will directly affect the noise reduction stability of the silent generator set during operation.

The noise of a normal open-frame generator set is around 110db, so when the user chooses a silent generator set, the noise should be around 75db within 7 meters.

The generator set that meets the modern silent conditions should have the following characteristics:

1. The whole machine has a compact structure and can adapt to various placement spaces;

2. The box adopts a detachable structure and is spliced by steel plates. In addition to noise reduction, it also has anti-rust and rain-proof functions;

3. In addition to the impedance mismatched muffler structure composed of multi-layer barriers inside the cabinet, a shock absorber is required to stabilize the unit.

4. The cabinet should be equipped with a reasonable observation window to facilitate current affairs to observe the operating status of the unit.

Quark motor recommends that the noise standard of the silent generator group should meet ISO374, and it must have good ventilation and radiation protection functions, so as to ensure the stability and safety of the silent generator group.

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