Centrifugal Fans direct driven with scroll - Nicotra Gebhardt

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The overall picture will decide Depending on the model of the fan, the efficiency grade “N” set in accordance with the ErP Directive must be achieved from 2013 and 2015 respectively. Efficiency grade “N” to ErP-Directive Year Centrifugal fans with backward curved blades without housing static 2013 58 58 61 37 42 2015 62 61 64 44 49 The efficiency grade designates a parameter in the calculation of the target energy efficiency of a fan depending on the electric input power when operating at the optimal energy efficiency point. The figure of parameter “N” corresponds to the target energy efficiency with a power of 10 kW. To make the selection easier for our customers, we offer complete systems as defined by the ErP Directive! In order to compare the systems, the total efficiency ηe of the fan without speed regulation is considered. η e = P u(s) / P e If the system has speed regulation, it will be taken into account with the “part load compensation factor” Cc (see below): η e = P u(s) / P e(d) · C c with housing static total Centrifugal fans with forward curved blades with housing static total ηe = Total efficiency Pu(s) = Fan gas power when operating at the optimal energy efficiency point Pe = Electric input power when operating at the optimal energy efficiency point Ped = Input power of speed regulator when operating at the optimal energy efficiency point Cc = part load compensation factor without speed regulation: Cc = 1 with speed regulation Ped ≥ 5 kW: Cc = 1.04 with speed regulation Ped < 5 kW: Cc = -0.03 ln(Ped ) + 1.088 In order to take the speed regulation into account via the part load compensation factor Cc , the following mathematical losses arise in accordance with the formula prescribed by ErP for the following typical motor powers: Ped = 4.00 kW: Cc = 1.05 (5 %) Ped = 2.20 kW: Cc = 1.06 (6 %) Ped = 0.75 kW: Cc = 1.10 (10 %) Complete systems by Nicotra Gebhardt Nicotra Gebhardt can supply complete systems in all product categories which meet the ErP requirements. We offer highly efficient fan systems with matching components and “high efficiency drives” – belt and direct drive. with integrated or external control to regulate speed. with IEC standard motors (IE2) or internal rotor motors with brushless DC technology. and with AC external rotor motors or brushless DC external rotor motors. Building blocks for best values Thanks to the decades-long experience of Nicotra Gebhardt all the components of our fans contribute to their high performance. Impellers and blades are optimised for turbulence and therefore particularly efficient. An example: With the latest development, the RLM Evo impeller, the free-running centrifugal fans of Nicotra Gebhardt achieve system efficiency grades never reached before. In addition, the brushless DC drives which Nicotra Gebhardt offers for its direct drive fans improve the system efficiency grades. The fan technology of Nicotra Gebhardt delivers highly efficient systems for all applications. C c η e η m η T η r P e(d) P e P u(s) A
DDM DDMB DD RZA RZP RZM TEM/REM B P P P P P P P 6.000 m³/h P P P P P 10.000 m³/h P P P P 18.000 m³/h P P REM: 22.000 m³/h 35.000 m³/h P 100.000 m³/h P 200.000 m³/h P P P P P P P 40 °C P P 60 °C Flow rate Media temperature P 80 °C P P ATEX P P Voltage P P Brushless-DC Speed control P P P External Inverter P P P TEM: P P P P REM: P Forward curved blades galvanised sheet steel Backward curved blades coated steel P P P P ≤ 0280 P ≥ 0315 P P ≤ 1000 P ≥ 1120 P Galvanised steel P Coated steel Impeller Casing material P Single inlet Inlet type P P P P P P Double inlet ErP status
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Page 33 and 34: Fittings / Accessories Flexible Con
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Page 37 and 38: Description Motors Electric connect
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RZP 11-0355-EC-52 T06-745.2.340-300
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RZP 11-0400-EC-52 T06-745.2.340-300
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RZP 11-0200/-0400 Specifications Fa
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T06-745.2.340-300 Description 300 2
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Fittings / Accessories Anti Vibrati
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Description Safety Performance data
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Accessories Frequency converter Tec
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Accessories Universal control devic
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Differential pressure sensor Direct
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Accessories Isolator ESH 22 Technic
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