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Hoyer HMA2 User Manual

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40 pages
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Electric Motors
Motor Manual
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Hoyer HMA2 Specifications

General IconGeneral
BrandHoyer
ModelHMA2
CategoryEngine
LanguageEnglish

Summary

Notice and Safety Instructions

Safety Instructions for Motor Operation

Covers general safety, personnel qualifications, equipment, operation, lifting, and transport.

Installation and Commissioning

General Installation and Commissioning Steps

Covers pre-installation checks, earthing, rotor checks, and general procedures.

Support and Alignment Procedures

Guidance on mounting, alignment, and ensuring stable support for the motor.

Measuring Insulation Resistance

Explains how to measure insulation resistance before commissioning.

Electrical Connection and Cabling

Motor Connection Diagrams

Provides diagrams for main supply and accessory connections.

Thermal Protection

PTC Thermistors for Thermal Protection

Details on PTC thermistors for motor overheating protection.

Motor Data and Parts

Permissible Axial and Radial Bearing Loads

Data on load limits for deep groove ball bearings under various conditions.

Frequency Converter (VFD) Operation

Bearing Deterioration due to VFDs

Explains increased risk of bearing currents and mechanical wear from VFDs.

Solutions for Limiting Bearing Currents

Advanced methods to mitigate bearing currents in VFD applications.

Motor Operation

Maintenance of Electric Motors

Bearing Lubrication and Re-greasing

Procedures for bearing maintenance, re-greasing intervals, and grease types.

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