产品列表PRODUCTS LIST
ROSENBERGCentrifugal fans : forward curved (Type: E/DRA…)
ROSENBERG洛森离心风机ERA/DRA系列
Properties产品属性:
flow rates up to 15,000 m³/h流量高达15000立方米/小时
size: 180 – 400 mm (impeller diameter) 180 - 400毫米（叶轮直径）
casing made of galvanised sheet steel外壳由镀锌钢板制成
asynchronous external rotor motor异步外转子电机
forward curved impellers前弯叶轮
feet can be offset by 90° 底脚可以偏移90°
protection class IP54防护等级IP54
thermal class F热敏等级F
connection cable on side连接电缆位于侧部
motor protection by thermal contacts有热敏保护
speed is variable using auto transformers可变速
Casings are made of galvanised sheet steel. Side parts and the spiral-shaped guide plate are connected with rivets. In the side panels, there are holes for the fixing of the feet, which can be implemented by 90°.
model – ERA : single inlet design (E)
model – DRA : double-sided inlet design (D)
外壳由镀锌钢板制成。侧面部件和螺旋形导向板用铆钉连接。在侧面板上，有用于固定脚的孔，可以实现90°旋转。
型号-ERA：单入设计（E）
型号-DRA：双入设计（D）
The impeller is made of galvanised sheet steel and is mounted directly to the rotor of the external rotor motor and balanced dynamically at two levels together with the rotor according to quality level G2.5 to DIN ISO 1940.
叶轮由镀锌钢板制成，并直接安装在外转子电机的转子上，实现动平衡。根据DIN ISO 1940的质量等级G2.5 DIN ISO 1940.
The drive motors are fitted with an outgoing cable. The electrical connection is made via an IP44 terminal box which is supplied loose.
驱动电机装有输出电缆。电气连接通过IP44接线盒进行。
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