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Electric motors & Inverters

Electric motors & Inverters

Product catalog summary

Overview: This document provides comprehensive technical specifications and standards for the VELA series of three-phase and single-phase electric motors. It covers design, mechanical and electrical characteristics, options, and technical data.

Specifications: The motors are designed in accordance with IEC standards, ensuring compliance with international directives such as the Low Voltage Directive, EMC Directive, and Machine Directive. These standards ensure that the motor component is safe and compliant when integrated into a machine.

Mechanical and Electrical Characteristics: The motors feature a die-cast squirrel cage rotor and a wound stator with external cooling as per IEC 34-6. They are designed for high efficiency, achieving energy savings of 5-10% depending on the motor type. The design allows the motors to reach approximately three times the rated speed without rotor-stator contact.

Standards and Approvals: The motors comply with various international standards, including IEC, CENELEC, CEI, DIN, VDE, BS, NFC, UL, NEMA, and CSA. UL and CSA approvals are available upon request.

Technical Specifications: Detailed technical data includes starting torque, rated torque, efficiency, locked rotor current, and rated current. It also covers protection class, motor ventilation system, configurations, noise limits, standardized voltages, and dimensions.

Options and Customization: Customization options include self-braking motors and different terminal board connections. Special dual-layer and shortened-pitch windings are used to eliminate undesired torque harmonics and support variable-speed controls.

Nominal and Operating Specifications: Key specifications include rated power, rated voltage, starting torque, maximum torque, and rated torque. The document allows for a voltage variation of up to ±10% for asynchronous three-phase motors.

Environmental Conditions: Motors are designed to operate below 1000 m altitude, with ambient temperatures between -15°C and 40°C, and relative humidity at 60%. Deviations affect motor power as shown in a diagram.

Type of Duty: Motor duty types S1 (continuous duty) and S2 (limited duty) are specified, with S1 involving constant load operation and S2 involving limited time operation followed by rest.

Motor Control with Inverters: Three-phase induction motors can be controlled using constant V/F inverters, designed for variable speed, torque, and power, achieving high performance and efficiency.

Torque Characteristics: A graph illustrates torque characteristics for self-cooled and power-cooled motors, with limitations below 50 Hz to prevent overheating.

Axial and Radial Loads: Specifications for maximum axial loads at 50 Hz are provided, with adjustments for 60 Hz. Radial loads are calculated based on power, shaft speed, pulley diameter, and belt tension coefficient.

Noise Levels: Sound pressure and power levels are measured for motors, with noise levels increasing by 4 dBA at 60 Hz.

Electrical Specifications: Insulation specifications include high-quality magnetic sheet metals and copper with double-layer insulating enamel, using NOMEX materials with class H insulation.

Voltage and Frequency: Rated voltage tolerance is ±5% according to EN 60034-1, with a ±10% tolerance allowed by IEC 60038.

Single-phase Motor Wiring Diagrams: Diagrams indicate rotation sense and configurations for high and low speeds.

Electromagnetic Brake Overview: The document details electromagnetic brakes, focusing on operation, specifications, and adjustment procedures. These brakes operate on DC and engage in the absence of power.

Specifications: Brakes have rapid braking times, release times, absorbed power, and noise levels, with specific values provided for each.

Components and Operation: Key components include the electromagnet, mobile armature, brake disc, and pressure springs. Braking is initiated when power is interrupted.

Adjustment Procedures: Air gap and braking torque adjustments are necessary for optimal performance.

Braking Intervention Times: DC brakes can achieve extra-rapid interventions with special power packs.

Voltage and Environmental Conditions: Standard voltage is 230V/50Hz/60Hz with a permissible variation of ±10%.

Conclusion: This document serves as a comprehensive guide for understanding the specifications, standards, and options for the VELA series electric motors and electromagnetic brakes, ensuring safety and performance in industrial applications.

Catalog excerpts

CT18IGBD1 A1 INDICE INDEX INHALTSVERZEICHNIS MOTORI ELETTRICI TRIFASE E MONOFASE THREE-PHASE AND SINGLE-PHASE ELECTRIC MOTORS DREHSTROM- UND EINPHASENMOTOREN A3 MOTORI ELETTRICI TRIFASE SERIE VL VELA ELECTRIC MOTORS VELA ELEKTROMOTOREN INVERTER (STM DRIVE) INVERTER (STM DRIVE) FREQUENZUMRICHTER (STM DRIVE) B1 C1 A B C D Z ESV ESV ESV Pag. Page Seite D1 WEB SITE MAP Z1 Gestione Revisione Cataloghi STM Managing STM Catalog Revisions Management Wiederholt Kataloge STM Z2

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A2 CT18IGBD1 SIMBOLOGIA Simbolo Symbols Symbol Unità di misura Unit of measurement Maßeinheit DEFINIZIONE DEFINITION DEFINITION Ca [Nm] Coppia di avviamento Starting torque Startmoment CB [Nm] Coppia base Basetorque Grundmoment CF [Nm] Coppia frenante Brake torque Bremsemoment CL [Nm] Coppia limite Limit torque Grenzemoment Cmax [Nm] Coppia massima Max. torque Höchstmoment Cn [Nm] Coppia nominale Rated torque Nennmoment cos — Fattore di potenza Power factor Leistungsfaktor Cr [Nm] Coppia resistente Counter-torque during acceleration Lastmoment CVF [F] Capacità condensatore Capacitor capacity...

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CT18IGBD1 A3 1.0 MOTORI TRIFASE E MONOFASE THREE-PHASE AND SINGLE-PHASE ELECTRIC MOTORS DREHSTROM- UND EINPHASENMOTOREN T-TA,D-DA,H-HA,I-IA.R-RA, S-SA,M-MA,MD-MDA, MF-MFA,MC 1.1 Generalità General information Allgemeines A4 1.2 Designazione Designation Bezeichnungen A12 1.3 Caratteristiche meccaniche Mechanical characteristics Mechanische Ausführung A16 1.4 Caratteristiche elettriche Electrical specifications Elektrische eigenschaften A26 1.5 Opzioni Options Optionen A31 1.6 Motori asincroni autofrenanti Self-braking Selbstbremsende Asynchronmotoren A37 1.7 Dati tecnici Technical specifications...

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A4 CT18IGBD1 Norme Standards IEC (World) CENELEC (Europe) CEI (Italy) UNEL (Italy) DIN (Germany) VDE (Germany) BS (U.K.) NFC (France) UL* (USA) NEMA* (USA) CANCSA* (Canada) Caratteristiche elettriche Electrical specifications Elektrische Merkmale IEC 34-1 HD 53.1.S2 CEI EN 60034-1 VDE 0530T1 BS 2613 5000 NFC 51-100 51-120 UL 1004 NEMA MG1 CSA 22.2 N0 100 Grado di protezione Protection class Schutzart IEC 34-5 EN 60034-5 CEI EN 60034-5 UNEL 05515 DIN 40050 VDE 0530 BS 4999-20 NFC 51-115 UL 1004 NEMA MG1 CSA 22.2 No.100 Metodo ventilazione motori Motor ventilation system Methode der Motorenbelaüftung...

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CT18IGBD1 A5 MOTORI TRIFASE / THREE-PHASE MOTORS / DREHSTROMMOTOREN I motori asincroni sono con rotore a gabbia di scoiattolo pressofusa, statore avvolto, chiusi, ventilati esternamente secondo IEC 34-6. The induction motors we produce have die-cast squirrel cage motor and wound stator, are enclosed and have external cooling to IEC 34-6. Alle unsere Asynchronmotoren haben einen druckgegossenen Käfigläufer, gewickelten Stator und sind geschlossen und außenbelüftet nach IEC 34-6. Serie / Series/ Serie Designazione Designation Typenschlüssel A12 T - TA D - DA Caratteristiche meccaniche Mechanical...

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A6 CT18IGBD1 MOTORI TRIFASE / THREE-PHASE MOTORS / DREHSTROMMOTOREN From a mechanical standpoint, given the grade G6.3 rotary balance per ISO 1940-UNI 4218, at discretion of technical office, in the defluxing area it is possible to achieve approximately 3 times the rated motor speed without rotorstator contacts. A steel insert is provided in the bearing slot that prevents radial movement by the outer ring with a fair degree of security (at discretion of technical office). In this type of motor, the bearing is pre-charged with an appropriate elastic ring that eliminates residual mechanical clearance...

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CT18IGBD1 A7 P Pmax [W] Pn 50Hz 87Hz f [Hz] A B C D B C D Frequenza di base / Base frequency / Grundfrequenz Frequenza massima / Maximum frequency / Höchstfrequenz Frequenza limite / Limit frequency / Grenzfrequenz MOTORI TRIFASE / THREE-PHASE MOTORS / DREHSTROMMOTOREN Special high-technology motors for applications requiring a high starting torque while maintaining the synchronous speed. The motor starts as a high- performance asynchronous motor; then, if load conditions permit, it synchronizes to achieve and maintain synchronous speed in synchronous mode. Example: a 4-pole motor powered at...

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A8 CT18IGBD1 These are special motors that make use of up-to-date design and manufacturing technologies. The stator is wound whereas the rotor is monobloc and features high short-circuit resistance. The main characteristic of this motor is the possibility of working at constant power when the number of rpm changes. Under particular conditions the motor's rotor can stay locked without exceeding the rated temperature class for which it is designed. For special applications the motor can be equipped with axial servoassisted ventilation with high locked- rotor torque increments as compared to the...

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CT18IGBD1 A9 MD - MDA High-technology motors resulting from our own exclusive experience and technology. High power outputs, 30% lower than standard catalogue motors, all other conditions being equal. In some cases a single capacitor is used for both speeds, providing simpler circuitry. Quiet, reliable, high performance, they represent an evolutionary step for the single- phase motor. They have % starting currents and starting drive torque % si milar to standard motors. MOTORI MONOFASE / SINGLE-PHASE MOTORS / EINPHASENMOTOREN MD - MDA Es handelt sich dabei um hochtechnologische Spezialmotoren,...

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A10 CT18IGBD1 MOTORI MONOFASE / SINGLE-PHASE MOTORS / EINPHASENMOTOREN This is a highly stable device, as it detects the rpm of the motor. It consists of a rotary part keyed to the motor shaft, a duly insulated electrical part keyed to the rear motor shield, and an aluminum cap for mechanical protection, with sealing gaskets that ensure an IP 55 rating for the unit. Only STM can offer complete motor protection with centrifugal circuit breaker at IP 55 through an aluminum cap (on request). Without protection cap. (standard) - Centrifugal switch IP20 - Motor IP55. Upon request internal centrifugal...

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CT18IGBD1 A11 MOTORI MONOFASE / SINGLE-PHASE MOTORS / EINPHASENMOTOREN This is an ampere relay which overcomes the force of an antagonist spring when the starting torque is high, working through a coil and mobile armature with electrical contact, to connect the starting capacitor parallel to the run capacitor. When the motor has started the absorbed current drops and the antagonist spring is then able to overcome the electromagnetic force of the coil, thereby disconnecting the starting capacitor. This device is available in various ampere capacities and is approved per UL and CSA standards. È...

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Electric motors & Inverters

Electric motors & Inverters

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