- Pneumatic Angle Grinder
- Pneumatic Cleaning Gun
- Pneumatic Drill
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- Pneumatic Hand Scaler KC-20
- Pneumatic Impact Wrench 1/2'', 3/4''
- Pneumatic Impact Wrench 1''
- Pneumatic Needle Scaler AMJ-16
- Pneumatic Needle Scaler AMJ-20
- Pneumatic Needle Scaler AMJ-24
- Pneumatic Needle Scaler AMJ-28
- Pneumatic Piston Pump
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Contact Us
Shanghai Allmarine Industry Co.,Ltd.
16-58 Chenbao Road, Malu Industry Park, Jiading Dist., Shanghai City,China.
Tel +86 21-59152099
Fax +86 21-59152055
Fax +86 21-59152055
Email: sales@allmarine.com.cn
Two-speed ventilation fans
11/29/2012 6:42:49 PMTwo-speed ventilation fans are commonly used in special occasions, such
as the exhaust fan fire usually use low-grade speed for ordinary
exhaust the air supply in the event of a fire, you need to use the high
speed high wind to fire smokegas discharge.The two-speed fan is
installed in a two-speed motor, the motor is usually by changing the
motor winding stages, or one motor is a plurality of windings to
achieve the purpose of the shift.
Ventilation fans fire one machine to achieve the purpose of common two -speed the ordinary electricity connected low speed, fire electricity access high speed. Two-speed motors are generally 2/4, 4/6, 6/8 several series ratio, choose two-speed fan series based on high-speed, low- speed wind than to elect the right and two-speed motor.
Ventilation fans fire one machine to achieve the purpose of common two -speed the ordinary electricity connected low speed, fire electricity access high speed. Two-speed motors are generally 2/4, 4/6, 6/8 several series ratio, choose two-speed fan series based on high-speed, low- speed wind than to elect the right and two-speed motor.
