Fundamental Knowledge

HVAC Motor Series

Chris Beaton

Through our partnership with HVACKnowItAll, we wrote a 4 part HVAC motor series disucssing how HVAC motor's work, how to troubleshoot your HVAC Motors, optimizing your HVAC motor supply chain, and how to cross-reference OEM HVAC motors. Read now!

Power Consumption of a 3-Phase vs a Single-Phase Motor

Cory Soetaert

Though single-phase and 3-phase power supplies have their pros and cons, they have different applications. Read this article to learn more.

DC Motor RPM vs Voltage

Chris Beaton

DC motor's speed, torque, and voltage are all interconnected. Understand the different ways you can control your electric motor. Read more!

How to Size a DC Motor

Chris Beaton

We look at the physical, mechanical, and electrical requirements to ensure the motor you have chosen is entirely up to the task. Read more!

What You Need to Know About Manufacturer Warranty

Cory Soetaert

Taking the time to properly understand your equipment's limitations and your intended application's requirements will help you operate your electric motor within the warranty's scope and avoid common user errors that could void your coverage.

What Causes Motor Overload?

Cory Soetaert

Most, if not all, electric motor manufacturers do not provide a warranty if the product has been damaged due to overload. That is why you must understand what can cause motor overload, learn how to recognize it, and understand your intended application so you can avoid damage to your costly assets.

NEMA 250 Types vs IEC 60529 Ratings

Chris Beaton

NEMA 250 Types and IEC 60529 Ratings are systems of standardization for electrical equipment enclosures. However, since NEMA 250 Types test for additional protections, the two rating systems are not interchangeable.

How Does a DC Motor Work?

Cory Soetaert

This article is your guide to the fundamentals of DC electric motors, giving you the information you need to decide for yourself if they're the right fit for your application.

What is a VFD, and How Does it Work?

Chris Beaton

VFDs give you greater control over how your AC motor performs, enabling you to find opportunities to increase efficiency and performance and maximize productive quality.

Top Reasons Why Your Electric Motor is Overheating

Cory Soetaert

Overheating is one of the leading causes of winding and bearing failure within an electric motor. Bu...

NEMA vs. IEC Motor Standards: What is the Difference?

Cory Soetaert

Electric motor nameplates carry essential information that helps you to quickly identify the motor m...

Introduction to IEC Motors

Cory Soetaert

In today's digitally connected world, online suppliers like eMotors Direct can bring global electric...

What is Service Factor and How is it Used?

Cory Soetaert

The service factor rating on your motor nameplate is an important rating from the manufacturer that helps you runs your motor at it's most efficient. It allows you to run in an overload situation without overheating and causing damages. Read more to learn how to extend your motor's life.

The Difference Between AC and DC Motors

Cory Soetaert

This article has given you an idea of what the key differences are between AC and DC motors and which of them is likely to be more suitable for your application.

What is an Electric Motor?

eMotors Direct

A video explaining the basics of electric motors and how they work. Lean more about the electric theories that move these complex machines.

Taking Care of Your Electric Motor

Chris Beaton

Purchasing a high-quality electric motor, and taking care of it with regular preventative maintenance, ensures a long and trouble-free service life with uninterrupted productivity.

Standard Single Phase Motor Connections

eMotors Direct

The types of connections you'll find for single-phase electric motors.

Glossary - Motor Related Terms and Definitions

Chris Beaton

A glossary of electric motor terms from absorption current to pinfire sparking to yield strength and everything in between.

Quick Guide: Repair or Replace a Motor?

Cory Soetaert

A schematic from EASA, follow the flow to find out if you're electric motor is repairable or if it's time for a replacement.

Formulas and Conversion Factors

EASA

Formulas and conversion factors for electric motors. AC and DC currents. Formulas for resistance, inductance, and capacitance. Temperature corrections. Formulas for circles. Formulas for sine waves.

Effect of Voltage Variation on Induction Motor Characteristics

Cory Soetaert

Electric motor voltage variation is the deviation of voltage from the rated voltage on the nameplate. These voltage variations greatly effect the efficiency of your motor, in both positive or negative ways. Read on for a detailed explanation.

Definitions for Hazardous Locations in North America

Chris Beaton

In North America, industrial hazardous locations have traditionally been defined by a combination of classes and divisions. Read on for details on the class ratings and divisions.

5 Important Points to Consider Before Purchasing an Electric Motor

Chris Beaton

Here are 5 important points to consider before making an electric motor purchase. Efficiency, maintenance time and cost, environment of application, load expectations, and your condition monitoring abilities.

No Name Plate? No Problem.

EASA

The motor nameplate provides the critical motor specifications and the catalogue number needed to replace a broken-down motor. In some cases, the nameplate will be laser-etched on the motor. In most cases, the nameplate is stuck or bolted to the motor. How do you identify your motor if it's missing?

NEMA Electrical Enclosure Types for Non-Hazardous Locations

eMotors Direct

The National Electrical Manufacturers Association (NEMA) and Underwriters Laboratories, Inc have created a chart describing the different types of motor enclosures, with how each motor will deal with each respective environment.

Synthetic Lubricants for Use in Rolling Element Bearings

Chris Beaton

Roller element bearings have started to use grease lubrication, displaying the specifications of the lubricant on the nameplate. Read on to find out why you should use the correct synthetic grease when called upon.

Preventing VFD-Induced Bearing Damage in Electric Motors

Cory Soetaert

VFDs create shaft currents in many electric motors that can damage the bearings, impacting productivity and incurring increased operating costs. Ensure you get AEGIS Shaft Grounding Rings or FAG Insulated Bearings from eMotors Direct on your next overhaul or new purchase.

Motor Nameplate: What Information It Provides

EASA

Understanding your motor nameplate allows you to run your electric motor safely, efficiently, with as little downtime as possible, all while making the most off of your assets.

Long Term Industrial Motor Storage

EASA

Although having a backup inventory of electric motors is beneficial, they need to be stored properly to avoid damages. Here are 6 things to consider when storing your industrial motor long term.