The Company

MORATTO s.r.l. founded in 1978 as Elettromeccanica Moratto, specialized in winding and repairing of electrical equipment. In 1993, thanks to the experience gained during working with some of the leading European manufacturers, MORATTO srl started the production of single and three phase asynchronous electric motors under the brand Elmor.

The actual business of MORATTO is the design and manufacture of special electric motors. The technical and commercial staff of the company supports the customer in the study and design of customerized solutions: the complete project is managed internally, also with the creation of non-standard shaft (including steel, toothed, …) , flange design in cast iron or aluminum and other mechanical or electrical specifications.

Modern 3D software allows a quick analysis and validation of projects, in addition to an easy exchange of information with the customer.

The test room was completely renovated in 2010, for adaption to the new regulations on the efficiency of motors, and for the implementation of new software and hardware for non-standard cycles tests.

Therefore, all the motors are developed and tested according to the standard tests or agreed upon with the customer.

The motors are finally realized in the new warehouse in Breda Pero (TV), where there are concentrated the controls of raw materials, the electro-machining, the assembling and final testing.

The current production includes motors according to IEC 34.1, from size to Mec56 Mec180, single phase, three phase and pole-changing. All motors are also available in brake and / or forced ventilation configurations. For some sizes, there is also a version with on-board inverter IP55.

Our  Technical Department and Commercial Department are at your disposal for any questions.

IEC180 MOTORS

On Mec180 basis construction, MORATTO is able to develop motors single speed (2, 4, 6, 8-poles) with power up to 30KW-S1 or two speed motors (4/12, 2/8, …). As all the other ELMOR motors, is available a brake version in addition to all the customizations provided for other sizes (encoder, power cooling, …). These motors are especially designed for lifting ad crane applications.. The sizes and Mec180 Mec200 use the same aluminum casing, with feet of differentsizes listed.

The front flange and the rear shield (brake version) are made in cast-iron.

STANDARD MOTORS

Electric motors manufactured by Moratto srl, under the brand name ELMOR, conform the international standards of the IEC and the corresponding national versions.

Each motor is provided of the CE mark, in order to  guarantee the safety of the final users.

FRAMES

The frames of our motors are die-cast aluminium alloy. The feet are integrated into the frames. Up to dimension Mec 100 they are assembled with tie-rods. From frame sizes 112, 132, 160 and 180 the housings are secured with screws.

FLANGES AND SHIELDS

Flanges and shields are in die-cast aluminium alloy arranged to accept oil-seals or V-seals.

On brake motors, the rear shields are made of die-cast aluminium alloy.

Upon request, we can provide flanges and shields according to the customer’s design.

BEARINGS

Bearings are manufactured by the best European firms. They are radial single-row ball bearings. The standard type (2Z) includes 2 seals for each bearing with pre-lubrification provided  by the supplier. All bearings are axially pre-loaded through steel tempered compensation rings.

COOLING

Cooling is obtained by means of a two-way plastic fan with radial blades.  Upon request, the fan can be supplied in die-cast aluminium alloy. The fan-cover is made of pressed steel.

ROTOR

Rotors are squirrel cage in die-cast aluminium alloy and dynamically balanced to   ISO 1940 Part 1, grade G6,3.

Shafts are in C40 steel. We specialise in providing, upon request, motors with special shaft dimensions, double ended, or  in INOX steel.

INSULATION

The windings of the stators are made with enamelled copper wire (insulation class “H” – 200°C) with modified polyester resins and polyamide resin coating.

The impregnation treatment , that is carried out during the manufacture,  uses  class “F” resin and provides high protection against electrical and mechanical stresses. As a result the winding is solid, without air pockets and with high heat transfer efficiency. The other materials used for standard  production of our windings,  are  class “F” insulation but, upon request, we can provide windings insulated class “H” only .

VOLTAGE – FREQUENCY

In order to perform correctly,  the voltage should not vary over a  5% from the rated value. When the motor is running respecting the above margin,  the over temperature can increase other 10° C. Normal windings are suitable for voltages of 230 and 400 V and frequency of 50 Hz. Upon request, we can also provide motors with different voltage and frequency.

OPERATING CONDITIONS

The indicated power values, are foreseen  for motors normally running in a ambient where altitude is below 1000 m a.s.l., and  temperature below 40° C, with a constant  supply frequency of 50 Hz.

In different working conditions, the specifications vary according to the coefficients shown in the following graph.

STAINLESS STEEL MOTORS

In addition to our range we have the “stainless steel motors”, with stainless steel housing, shield, flange, screws and nickel-plated brass cable gland.

These motors are used in the food industry and in corrosive environments.

These motors are normally supplied with integrated cable and no fan, the rest is all customizable, according to customer’s requirements.

The motor can be made with a degree of protection up to IP69K, or with additional seals between the housing and the flange or between the housing and the shield.

The winding can be encapsulated in resin or tropicalized, with thermal protection and / or heaters.

The nameplate data are engraved on the shield by serigraphy, together with customer’s logo, if required.

The contacts of the cable, its length, the material and the number of contcts are other possible customizations.

From a mechanical point of view you can require standard or special shaft ends, and the same situation regarding the flange.

Finally there is the possibility of having the front bearing blocked.

BRAKE MOTORS

All ELMOR motors, both three-phase and single-phase, are available with brake. These motors, on the non-drive end,  are equipped with a electro-magnetic spring-pressure brake with negative action. In absence of power supply, the brake stops the motor instantly (see tables).

The brake is attached to the motor through a cast-iron rear cover. The shafts of these motors are made by a special  steel.

Direct current Brake “DC”

The direct current brakes are powered through a rectifier, usually connected to the motor terminal board  .

We use an high-speed rectifier.

Alternating current Brake “AC”

The alternating current brakes are usually powered through the motor terminal board.

Upon request, we can provide additional terminal board.

Brake motors Serie S

The brakes Series S feature a reduced braking torque, and are particularly used in applications that do not need a quick braking, such as woodworking machines.

They feature a cast iron fan (balanced), which acts as a brake: the fan also perform the function of flywheel

This Dc Brakes can be powered directly by the motor through the rectifier.

These motors are compact and cheaper compared with traditional brake

SERVOFAN MOTORS

Increased cooling is obtained with an additional fan mounted on the rear of the electric motor, into the fan cover.

The usage of this accessory is recommended in the following case:

Applications with rated torque below motor speed at 50Hz;

Motors with low speed (6 – 8 poles);

Motor fed through inverter;

Motor under high stresses.

The additional fan is available with single-phase or three-phase motor, direcly powered through the motor  terminal board , or through an additional and separate one on fan cover.

MOTORS WITH INVERTER

I motori con inverter sono caratterizzati da elevata compattezza, rapidità di installazione, dalla riduzione dei costi di cablaggio delle macchine e dalla possibilità di personalizzazione.

I campi di applicazione sono innumerevoli, ad esempio le macchine da legno, metallo, marmo e vetro; le macchine utensili, il confezionamento, le linee di produzione, la plastificazione, la ventilazione e le pompe, i sollevamenti e i trasporti.

CARATTERISTICHE GENERALI

L’applicazione dell’inverter direttamente sul motore, in una cassetta in alluminio appositamente sviluppata, permette di ottenere elevate prestazioni in termini di flessibilità, compattezza, velocità di applicazione.

Le funzionalità avanzate dell’inverter utilizzato, inoltre, permettono di accoppiare al meglio le caratteristiche del gruppo motoinverter a quelle della macchina utilizzatrice.

VERSIONI DISPONIBILI

Sono attualmente disponibili due versioni di inverter, caratterizzate da due diversi range di potenza.

L’involucro porta inverter è realizzato in fusione di alluminio. Il grado di protezione ottenibile, anche con il tastierino di controllo applicato, è pari a IP65.

La struttura della cassetta permette l’eventuale montaggio di una spina di alimentazione o di eventuali pressacavi per la remotazione dei controlli o l’ingresso di segnali di feedback.

Tutti i motori con inverter possono venir equipaggiati di servoventilazione trifase IP55, collegata direttamente all’azionamento. Il flusso d’aria raffredda sia il motore che il fondo della cassetta, che funge da dissipatore per l’inverter. Motore ed inverter sono termicamente isolati.

Per entrambe le taglie di inverter è disponibile la versione Stand-Alone. In questo caso la cassetta porta inverter è separata dal motore, assicurando sempre elevato grado di protezione e facilità di installazione

SPECIAL MOTORS

Over the years Moratto Srl has been specializing in the realization of special motors: customer service includes planning and realization of dedicated components like special flanges, shafts according to customer design, control panel on motor. Customer service also includes the industrialization of the product. Every customization is also possible at electrical level: motors with special voltage and frequency and two-speed are totally developed, tested and realized inside Moratto Srl.

3 SPEED MOTORS