Text for invitation to tender for EC centrifugal fans – RadiFit EC centrifugal fans – RadiFit Sizes 250 to 400 Direct-drive dual-inlet centrifugal fans with backward-curved high-performance centrifugal impellers mounted on a GreenTech EC external rotor motor with add-on control electronics. Scroll housing made of galvanised sheet steel with bolted-on adjustable mounting bracket, optimised step diffuser in discharge for low-noise operation, connection flange on pressure side. Aluminium impeller with 7 backward-curved, offset, continuously welded blades. Flow-optimised inlet nozzle made of galvanised sheet steel. Motorised impeller balanced in two planes (static and dynamic) as per DIN ISO 1940 to balance quality G 6.3. GreenTech EC external rotor motor surpasses efficiency class IE4, magnets without use of rare earths, maintenancefree ball bearings with long-term lubrication, theoretical nominal service life of at least 40,000 operating hours, soft start, integrated current limitation, wide input voltage range 3-phase 380-480 V, 50/60 Hz, fan suitable for use with all standard power supply systems with no effect on air performance. Motorised impeller isolated from surroundings with specially designed vibration-absorbing elements, compact electronics, aluminium housing, low-noise commutation logic; 100% speed control; PID controller; RS485/MODBUS RTU interface, no need for shielded wiring. Readily accessible connection area with spring terminals, cable entry can be moved through 180 degrees, environment-resistant cable glands. Fan satisfies the relevant EMC regulations and requirements with regard to circuit feedback; documentation and marking conform to the applicable EU directives. Reliable performance data, air performance measurements on inlet-side chamber test rig in accordance with ISO 5801 and DIN 24163, noise measurements in low-reflection acoustic test chamber as per DIN EN ISO 3745. Integrated protective devices: - Alarm relay with floating contacts (250 V AC/2 A, cos φ = 1) Locked-rotor protection Phase failure detection Motor soft start Mains undervoltage detection Excess temperature protection for electronics and motor Short circuit protection Optional: - Different requirements on request Subject to change / As at 2015/04/01 ebm-papst Mulfingen GmbH & Co. KG Bachmühle 2 ·74673 Mulfingen ·Phone: +49 7938 81-0 ·Fax: +49 7938 81-110 ·www.ebmpapst.com ·[email protected] Text for invitation to tender for EC centrifugal fans – RadiFit Technical data: Fan types Air flow Stat. pressure increase Stat. overall efficiency Operating speed Motor type Type of control Motor efficiency class Total power consumption Specific fan power Nominal voltage range Mains frequency Nominal current Ingress protection Sound power level Sound pressure level (at 1 m) Perm. ambient temperature Fan mass qV p fs η es n P ed SFP UN f IN L W A(A, in) L p A(A, in) T m D3G ________ - ________ - _____ = ___________________________ = ___________________________ = ___________________________ = ___________________________ = EC motor = 0-100% speed control = IE4 = ___________________________ = ___________________________ = ___________________________ = 50 / 60 = ___________________________ = IP54 = _______ / L W A(A, out) = _______ = _______ / L p A(A, out) = _______ = ____________ to ____________ = ___________________________ m3/h Pa % min-1 kW kW/(m³/s) V Hz A dB(A) dB(A) °C kg Product photo EC centrifugal fans – RadiFit D3G400 Refer to data sheet for dimensions and connections Subject to change / As at 2015/04/01 ebm-papst Mulfingen GmbH & Co. KG Bachmühle 2 ·74673 Mulfingen ·Phone: +49 7938 81-0 ·Fax: +49 7938 81-110 ·www.ebmpapst.com ·[email protected]