建 準 電 機

SUNONWEALTH

Page 9 of 14

IV. CHARACTERISTIC DEFINITION

The following is a general description of certain tests that are performed on

representative SUNON fans in order to determine the specifications of the fan. Nothing

in this document is intended to suggest that these tests are performed on every model of

SUNON fan. Moreover, the descriptions that follow each test are meant only to provide

a general explanation of each test. If you would like a more detailed explanation as to

any test identified in this Section, SUNON can provide such an explanation upon

request.

1. ACOUSTICAL NOISE

Measured in a semi-anechoic chamber with background noise level below 15dB(A).

1 METER FROM MICROPHONE TO FAN INTAKE

The fan is running in free air under shaft horizontal condition with the microphone at

distance of one meter from the fan intake.

2. INPUT POWER

Measured after continuous 10 minute operation at rated voltage in clean air

( STATIC PRESSURE=0), and at ambient temperature of 25 degrees C under shaft

horizontal condition.

3. RATED CURRENT

Measured after continuous 10 minute operation at rated voltage in clean air

( STATIC PRESSURE=0), and at ambient temperature of 25 degrees C under shaft

horizontal condition.

2017.09.11

D.C.C.