Some machines never get to rest. A transformer carries load day and night. A motor in a hot workshop runs for hours with little airflow. In these places, the coil is under constant thermal stress, and the wire inside it has to cope. This is where a high-temperature winding wire earns its place.
Copper Modi Polyester Wire 180 Class from Apple Insulated Wires Pvt. Ltd. is a copper modified polyester winding wire made for demanding heat. We make it in Dadra, in the Union Territory of Dadra and Nagar Haveli, and supply it across India and abroad. This page explains what the wire is, what the 180 class rating means, where it is used, and how to choose the right grade for your product.
Copper Modi Polyester Wire is an enameled copper wire. A thin layer of polyester-based enamel covers the copper conductor and works as insulation. It keeps each turn of the coil apart from the next, so current follows the wire and does not pass between turns.
This is our highest heat grade in the modified polyester range. The enamel is built to withstand temperatures up to 180 class, which makes the wire suitable for demanding electrical and industrial work. It is known for strong thermal resistance, good dielectric strength and a long service life.
The wire has a smooth surface and is available in various gauges. A smooth surface helps the wire move through guides and winding machines without catching. Uniform winding follows, and so does a lower chance of damage to the insulation.
You may also see this product called a 180 degree copper polyester wire, copper modified polyester winding wire or Class 180 copper modified polyester wire. These names describe the same type of wire.
These are the main features of our copper modified polyester wire in 180 class:
Rated for 180 class: the enamel is built for high working temperatures.
Strong dielectric strength: the insulation protects against electrical breakdown between turns.
Mechanical stability: the coating stays firm under winding stress and continuous heat.
Smooth surface: the wire winds evenly and reduces the risk of insulation damage.
Range of gauges: it is available in various sizes to suit different designs.
Steady performance: it holds its quality in high-heat electrical environments.
Every enameled wire carries a thermal class. The class shows the heat level that the enamel is built to handle in normal work. A higher number means the wire can work in hotter conditions. A 180 class wire can handle more heat than a 130 or 155 class wire.
Heat matters because it is the main cause of insulation ageing. A coil that runs hot for a long time slowly weakens its enamel. Over the years the insulation can crack or thin out, and the coil may fail. A wire rated for higher heat gives a wider margin and helps the coil last longer under the same load.
The class is not an invitation to run a coil as hot as possible. It is a safety margin. Estimate the real temperature your coil reaches under full load, and choose a class that sits comfortably above it.
This copper polyester wire suits winding work where heat is high or load is continuous. Typical uses include:
Transformers that carry steady load
Electric motors for industrial machines and pumps
Motors that run for long hours in warm surroundings
Coils for chokes, relays and solenoids
Equipment in enclosed housings with limited airflow
Other electromagnetic devices in high-heat environments
In every case the wire does the same core job. It carries current through many tight turns and keeps each turn insulated. The 180 class simply allows the coil to do this in hotter conditions.
Strong heat resistance. The 180 class rating gives the widest margin in our modified polyester range, which helps coils last in hot machines.
Reliable insulation. Good dielectric strength lowers the chance of short circuits and breakdown inside the coil.
Long service life. A stable coating holds up under continuous thermal stress, so the winding stays sound for longer.
Easy winding. The smooth surface reduces friction on the machine, and coils lay down in neat layers.
Choice of sizes. Various gauges mean you can match the wire to your design without changing the grade.
Copper conductivity. Copper carries current well, so coils can stay compact. If weight and cost matter more for your product, compare it with our super enameled aluminum winding wires.
A few simple checks will help you pick well:
Check the working temperature. Estimate the real temperature of the coil under full load. Choose a class that sits comfortably above it.
Think about the duty. Continuous or long-hour work needs more heat headroom than short-time work.
Check the surroundings. Hot rooms, closed housings and poor airflow all raise coil temperature.
Match the wire size to the load. The conductor must be thick enough for the current your coil carries.
Balance cost and risk. If the coil stays cool, a lower class may be enough. If it runs hot, 180 class is the safer choice.
For lighter duty, see our copper modi polyester wire 130 class. To compare every grade we make, visit our super enameled copper winding wires page. If you are unsure, tell us about your product and our team will suggest a class.
Even good wire can be damaged by poor handling. These habits protect the enamel:
Store spools in a dry, clean place away from moisture and heat.
Keep them away from oil and strong chemicals.
Do not drag the wire over rough or sharp edges.
Avoid sharp bends and sudden pulls while winding.
Keep the winding tension even so the enamel does not crack.
Handle spools by the flange, not by the wire.
Cover opened spools when they are not in use.
These habits cost nothing, and they prevent most insulation faults before the coil is even finished.
With over 25 years in the wire and cable industry, Apple Insulated Wires Pvt. Ltd. knows that makers need wire that behaves the same way in every batch. As a copper modified polyester wire manufacturer and copper polyester wire supplier, we give small and large orders the same care.
Known standards: our enameled wires are made to IS 13730, IEC 60317 and NEMA MW1000.
Tested in our own lab: every product is checked in-house before it ships.
Made to your needs: we can adjust thermal class, insulation type and conductor size.
Clean processes: our work is RoHS compliant and eco-friendly.
Bulk supply: we supply large quantities at competitive prices.
India and export: we pack with care and prepare the documents needed for export.
Helpful support: our team is ready to answer your questions.
Copper Modi Polyester Wire 180 Class is a dependable choice for transformers, motors and coils that work under high heat. If you want to know the sizes available or need help choosing a class, our team will guide you. Call or message us on +91 9624471888. You can also write to info@applewires.com.
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