high efficiency motor technology for fansDDMB

Issue 1.1 EN

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Up to 50 % of the power consumption of a fan can be saved (de-

pending on the operating environment) by the use of brushless DC

motors in place of AC motors.

Comparison of the different levels of system efficiency

The brushless DC motor operates without slip losses and thus con-

sumes significantly less power than conventional AC motors.

Important:

This applies for all speeds, i.e. even in partial-load operation!

The brushless DC motor therefore uses less power than the AC

motor under all operating conditions and has a significantly higher

level of drive system (motor and control) efficiency.

L Conventional AC motor

L with brushless DC technology

Full load Partial load Base load

kWh/year

AC drive (frequency converter)

AC drive (transformer control)

Driv

e sy

stem

effi

cien

cy le

vel i

n %

Speed range

Brushless DC drive

Brushless DC

Dri

ve e

ffici

ency

ErP Dire

ctive 2009/125/EC

The entire product line of direct driven fans by Nicotra Gebhardt

is now available with the particularly energy efficient brushless DC

technology. These innovative motors achieve the highest efficiency

and therefore cost less to operate than traditional

AC motors in every application.

Fit for the future with brushless DCs

The EU’s ErP Directive prescribes minimum levels of efficiency for

electric motors. These levels of efficiency will be steadily increased

in the coming years. Motors with brushless DC drives already

exceed the requirements that will become compulsory in 2015

and 2017.

Compact direct driven centrifugal fan, double inlet

High efficiency direct driven centrifugal fan

J new brushless DC external rotor motor

J new lap jointed scroll

J impeller with forward-curved blades

J high efficiency

J low power consumption

J low sound power level

J high reliability

High efficiency variable speed drive

Energy saving concept

J high efficiency drive due to optimized motor design

J PFC disabled at stop

J NTC bypassed during operation

General features

J integrated PFC

J brownout protection

J IP 54 for complete drive

J dry contact - error signal

J simple usage - fan selection by DIP-switches and

GO! (no parameter setup)

J designed for double inlet fans

J external unit - no obstruction of intake -

less aerodynamic losses

Interface

J analogue

J MODBUS RTU

nicotra-gebhardt.com

DDMB

RDA

RZP RZM

RLMEVO RLEEVO

EN

-PB

2-D

DM

B-1

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500

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2012

– P

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Ger

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Direct driven centrifugal fans RZP with brushless DC external rotor motor

Direct driven centrifugal fans RZM with brushless DC internal rotor motor

Roof extract fans RDA with brushless DC ex-ternal rotor motor. Ideal for being connected to central control systems or any other individual control

Direct driven centrifugal fans DDMB with brushless DC internal rotor motor

Plug fans RLM 56 and RLM-Evo with brushless DC internal rotor motor

Plug fans RLE with brushless DC external rotor motor

Brushless DC technology used in many applications

Nicotra Gebhardt Germany

Nicotra Gebhardt GmbH

Gebhardtstraße 19-25

74638 Waldenburg

Germany

Phone +49 (0)7942 101 0

Fax +49 (0)7942 101 170

E-Mail info@nicotra-gebhardt.com

Nicotra Gebhardt Italiy

Nicotra Gebhardt S.p.A

Via Modena, 18

24040 Zingonia (BG)

Italy

Phone +39 035 873 111

Fax +39 035 884 319

E-Mail info@nicotra-gebhardt.com