Windings (Coils): Temperature Range -40°C to 180°C

Component Specifications

Definition

Windings, also known as coils, are essential components in electric motors and generators, consisting of insulated copper or aluminum wire wound around a core. They create electromagnetic fields when energized, enabling the conversion of electrical energy to mechanical motion (in motors) or vice versa (in generators). Proper winding design affects efficiency, torque, power output, and thermal management.

Working Principle

Windings operate on electromagnetic induction principles. When an electric current flows through the coil, it generates a magnetic field. In AC motors, alternating current produces a rotating magnetic field that interacts with the rotor, causing rotation. In DC motors, the magnetic field interacts with permanent magnets or other windings to produce torque. The number of turns, wire gauge, and winding pattern determine electrical characteristics like inductance and resistance.

Materials

Copper (99.9% purity, electrolytic grade) or aluminum wire, typically with polyurethane, polyester, or polyimide insulation (e.g., Class F, H). Core materials include laminated silicon steel or ferrite to reduce eddy current losses. Insulation varnish or resin (epoxy) provides mechanical stability and thermal protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Inductance	1 mH - 10 H
Resistance	0.1-100 Ohms (depends on design)
Wire Gauge	AWG 14-40
Voltage Rating	Up to 1000V AC/DC
Insulation Class	Class F (155°C) or Class H (180°C)
Temperature Range	-40°C to 180°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 18200, DIN EN 60317, IEC 60034

Parent Products

This component is used in the following industrial products

Rotor/Stator Assembly (Motor)

The core rotating and stationary electromagnetic assembly within an electric motor.

View Product Details

Engineering Analysis

Risks & Mitigation

Insulation degradation from overheating
Corrosion in humid environments
Mechanical damage during installation
Electrical short circuits

FMEA Triads

Trigger: Overheating due to excessive current or poor cooling
Failure: Insulation breakdown leading to short circuits
Mitigation: Use thermal sensors, ensure adequate ventilation, select proper insulation class

Trigger: Vibration or mechanical stress
Failure: Wire fatigue or breakage
Mitigation: Secure windings with resin impregnation, use flexible leads, implement vibration damping

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5% on resistance, ±10% on inductance per ISO 18200

Test Method

Hi-pot testing (dielectric strength), insulation resistance measurement, turns ratio test per IEC 60034

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Windings (Coils)

Manufacturer profiles associated with Windings (Coils).

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

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A conductive plate in motor terminal blocks that establishes electrical contact between conductors.

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A gland body is the main housing component of an aluminum cable gland that provides mechanical protection and environmental sealing for electrical cables entering enclosures.

Current Sense Resistor

A precision resistor used to measure current flow in electrical circuits by converting current to a measurable voltage drop.

Frequently Asked Questions

What is the difference between stator and rotor windings?

Stator windings are stationary coils in the motor housing that create a rotating magnetic field, while rotor windings (in wound rotor motors) are on the rotating part and interact with the stator field to produce torque. In squirrel cage motors, the rotor has conductive bars instead of windings.

How do winding failures occur?

Common failures include insulation breakdown due to overheating, moisture ingress, mechanical stress, or voltage spikes. This can lead to short circuits, open circuits, or ground faults, reducing motor efficiency or causing complete failure.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Windings (Coils)