*mydirectindustry

Catalogs
Mecc Alte
Motor Starting Capability

Motor Starting Capability

Product catalog summary

Introduction
The document explores the motor starting capability and the Mecc Alte Auxiliary Winding (MAUX) system, which is essential for maintaining fault current during short circuit conditions, enabling downstream circuit breakers to trip and clear faults.

MAUX System Overview
The MAUX system employs an auxiliary winding to power the automatic voltage regulator (AVR), separate from the main output winding to reduce mutual inductance. It utilizes the third harmonic to ensure waveform distortions do not impact performance.

Benefits of the MAUX System

Standard in all Mecc Alte generators, included in the base price.
Delivers over 300% fault current for up to 20 seconds, surpassing most PMG systems.
Compact design without additional length or weight.
Improved motor starting capability with rapid voltage recovery.
Single AVR for all 2, 4, and 6 pole industrial products, minimizing inventory.
AVR can be reconnected to the main generator output if auxiliary winding fails.
Easy servicing with accessible rotating diodes.

Comparison with PMG Systems
Despite some demand for PMG options, Mecc Alte emphasizes simplicity. Digital regulators allow optional PMG addition to standard products from 180kVA. The PMAUX system supports retrofitting a PMG kit for backup.

Motor Starting Curves
The document includes graphs showing transient voltage dips against locked rotor skVA for various models and frequencies (50 Hz and 60 Hz), demonstrating MAUX and PMG system performance across voltage levels.

Motor Starting Capability Reference Handbook Summary
Specifications:
Details specifications for various motor models, focusing on starting capabilities for 50 Hz and 60 Hz frequencies across different voltage levels.

Key Parameters:
Discusses transient voltage dip percentage relative to locked rotor skVA for each model, with graphs illustrating performance under various conditions.

Models Covered:
Covers models like ECO 32, ECP 34, and NPE 32 series, with configurations such as 1S/4, 2S/4, 3S/4, 1L/4, 2L/4, 3L/4, and 3Phase 12 lead machines.

Contact Information:
Includes contact details for Mecc Alte's global offices, with phone, fax numbers, and email addresses for inquiries and support.

Conclusion:
This handbook is a comprehensive guide for understanding Mecc Alte motors' starting capabilities, providing crucial data for optimizing motor performance in various applications.

Catalog excerpts

Guida Tecnica: Capacità di spunto Technical Guide: Motor Starting Capability

Open the catalog to page 1

Motor Starting Capability reference handbook Motor starting capability and MeccAlte Auxiliary Winding (MAUX) The ability to maintain fault current during short circuit conditions is a common requirement in the world wide marketplace. The purpose of course is to allow for downstream circuit breakers to see a high enough level of current to be able to trip and thus remove the fault from the system. There are several ways to accomplish this. In the past, external electronic modules such as the Current Boost System and Series Boost Option were the norm. More recently, the market has adopted the Permanent...

Open the catalog to page 2

Motor Starting Capability reference handbook Main Output 3Ph or 1Ph Sensing AVR Power Main Stator and MAUX winding Exciter Stator (field) Exciter Rotor (Armature) Main Field (Rotor) Mechanical power input Rotating Diodes MAUX Lay out. Standard on MeccAlte products. Main Output AVR Power Main Stator Exciter Stator (field) Exciter Rotor (Armature) Main Field (Rotor) Mechanical power input Rotating Diodes PMG Lay out. Optional on many competitor products. Mecc Alte pioneered the technological benefits of the MAUX. However, some traditional users still occasionally request a Permanent Magnet Generator...

Open the catalog to page 3

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 4

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 5

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 6

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 415V

Open the catalog to page 7

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 415V Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 8

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 9

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 10

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 11

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 12

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 13

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 14

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 15

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 16

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 17

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V

Open the catalog to page 18

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 415V

Open the catalog to page 19

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 20

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 440V

Open the catalog to page 21

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V

Open the catalog to page 22

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V Locked Rotor skVA [kVA] 415V

Open the catalog to page 23

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V

Open the catalog to page 24

Motor Starting Capability reference handbook Locked Rotor skVA [kVA] 380V

Open the catalog to page 25

Motor Starting Capability reference handbook ECP 3 1S/4 1phase, reconnected 12 lead machine 50 Hz Locked Rotor skVA [kVA] 220V Locked Rotor skVA [kVA] ECP 3 2S/4 1phase, reconnected 12 lead machine 50 Hz Locked Rotor skVA [kVA] 220V Locked Rotor skVA [kVA]

Open the catalog to page 26

Motor Starting Capability reference handbook ECP 3 1 L/4 1 phase, reconnected 12 lead machine Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] ECP 3 2L/4 1 phase, reconnected 12 lead machine Locked Rotor skVA [kVA] Locked Rotor skVA [kVA]

Open the catalog to page 27

Motor Starting Capability reference handbook ECP 3 3L/4 1 phase, reconnected 12 lead machine Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] ECP 28 S/4 1 phase, reconnected 12 lead machine Locked Rotor skVA [kVA] Locked Rotor skVA [kVA]

Open the catalog to page 28

Motor Starting Capability reference handbook ECP 28 M/4 1phase, reconnected 12 lead machine 50 Hz Locked Rotor skVA [kVA] 220V Locked Rotor skVA [kVA] ECP 28 2L/4 1phase, reconnected 12 lead machine 50 Hz Locked Rotor skVA [kVA] 230V Locked Rotor skVA [kVA]

Open the catalog to page 29

Motor Starting Capability reference handbook ECP 28 VL/4 1 phase, reconnected 12 lead machine Locked Rotor skVA [kVA] Locked Rotor skVA [kVA] ECO 32 2S/4 1 phase, reconnected 12 lead machine Locked Rotor skVA [kVA] Locked Rotor skVA [kVA]

Open the catalog to page 30

Motor Starting Capability reference handbook ECO 32 3S/4 1phase, reconnected 12 lead machine 50 Hz Locked Rotor skVA [kVA] 220V Locked Rotor skVA [kVA] ECO 32 1L/4 1phase, reconnected 12 lead machine 50 Hz Locked Rotor skVA [kVA] 220V Locked Rotor skVA [kVA]

Open the catalog to page 31

Motor Starting Capability reference handbook ECO 32 2L/4 1phase, reconnected 12 lead machine 50 Hz Locked Rotor skVA [kVA] 220V Locked Rotor skVA [kVA] ECO 32 3L/4 1phase, reconnected 12 lead machine 50 Hz Locked Rotor skVA [kVA] 220V Locked Rotor skVA [kVA]

Open the catalog to page 32

All Mecc Alte catalogs and technical brochures

Archived catalogs

400 Hz
4 Pages
BTO3 4Poles
4 Pages
BTO3 2Poles
4 Pages