China Customized Winding Wire PE+PA (PE2+PA)

PE+PA winding wire, often designated as PE2+PA when cross-linked polyethylene is used, is the insulation system of choice for water-filled submersible motors. These motors, commonly known as “wet motors,” operate with the stator winding directly exposed to the surrounding fluid, making the water resistance of the insulation the single most important factor determining motor reliability and service life .

The construction consists of a copper conductor covered with an inner polyethylene layer for electrical isolation and an outer polyamide (nylon) sheath for mechanical protection . The polyethylene provides high insulation resistance, while the polyamide sheath ensures surface protection against abrasion during winding and operation . When the polyethylene is cross-linked (PE2), the thermal resistance increases significantly, allowing continuous operation at temperatures up to 90°C .

The electrical performance of PE2+PA winding wire is exceptional. It achieves a dielectric breakdown strength of 70 kV/mm at 50 Hz and 20°C, with specific insulation resistance measuring 10¹⁰ Ω·cm . The wire’s high resistance to voltage fluctuations provides a greater safety factor than standard motor windings, a critical advantage in regions where grid stability cannot be guaranteed . 

View more products about submersible pump winding wire+
View more products about submersible pump winding wire+
China Customized Winding Wire PE+PA (PE2+PA) by zhengzhou tasuu windingwire industry co.,ltd
China Customized Winding Wire PE+PA (PE2+PA) by zhengzhou tasuu windingwire industry co.,ltd
China Customized Winding Wire PE+PA (PE2+PA) by zhengzhou tasuu windingwire industry co.,ltd
China Customized Winding Wire PE+PA (PE2+PA) by zhengzhou tasuu windingwire industry co.,ltd

Submersible Pump Applications

PE2+PA winding wire serves a diverse range of submersible pump applications worldwide. In agricultural irrigation, these wires power deep well pumps that must operate reliably for years with minimal maintenance access . In municipal water supply, submersible motors draw drinking water from aquifers, requiring insulation systems that maintain their integrity over decades of continuous submersion .

Mining operations present some of the most demanding conditions. Mine dewatering pumps operate in water with varying pH levels and often encounter abrasive particles. The PE2+PA construction’s resistance to chemicals and mechanical damage makes it suitable for these harsh environments . Oil and gas platforms use submersible pumps for firefighting systems and artificial lift applications, where the wire must withstand both water and hydrocarbon exposure .

Power plant cooling systems represent a sensitive application where long-term reliability is paramount. The PE2/PA wire’s stability under continuous thermal and electrical stress makes it the preferred choice for circulation pumps in these critical installations . Deep sea applications extend the wire’s utility to offshore environments where the combination of pressure, temperature, and water chemistry demands the highest insulation performance .

In borehole water extraction, PE2+PA winding wire is available for 6-inch, 8-inch, and 10-inch rewindable motors with power ratings from 5.5 kW to 185 kW . These motors operate in wells where the surrounding water provides both cooling and lubrication, making the water-resistant insulation system essential for reliable operation.

Global Market Deployment and Standards

The adoption of PE2+PA winding wire varies across regions, with different national standards governing its manufacture and certification. Understanding these regional standards is essential for manufacturers and exporters serving global markets.

India

India maintains a comprehensive standard framework for submersible motor winding wire under the Bureau of Indian Standards. The IS 8783 series addresses all aspects of design, manufacture, and testing. Part 4, Section 2 specifically covers cross-linked polyethylene insulated and polyamide jacketed wires, providing the certification pathway for PE2+PA products in the Indian market . Part 2 of this standard specifies materials for dielectric and jacket, while Part 3 provides the methods of tests .

China

China maintains the JB/T 4014 series as the primary standard for submersible motor winding wires. Part 4 specifically addresses cross-linked polyethylene insulated nylon sheathed water-resistant winding wires with rated voltages up to 600/1000 V . Chinese manufacturers produce PE+PA and PE2+PA wires according to this standard for both domestic and export markets, with rated AC voltage of U0/U 450/750V and long-term operating temperatures from -30°C to 90°C . The wire is designed for water with pH value of 6.5 to 8.5 and water pressure below 1 MPa .

International Standards

At the international level, the IEC 60317 series provides general requirements for particular types of winding wires. While this series does not currently include a dedicated section for PE2+PA submersible winding wire, its testing methodologies are widely referenced . The IEC 60811-1-1 standard specifies test methods for mechanical properties including tensile strength and elongation, which are critical for verifying the durability of the insulation system . DIN VDE 0303-21 provides the German standard for dielectric breakdown strength testing at power frequencies .

Gulf Region

The Gulf Cooperation Council standardization organization has adopted several relevant standards for submersible pump systems. GSO ISO 15551:2025 specifies requirements for design, manufacturing, and performance ratings of electric submersible pump systems for artificial lift applications . For winding wire specifically, GSO IEC 60317-0-2:2021 provides general requirements for enamelled rectangular copper winding wires, establishing a framework for electrical and mechanical properties verification .

Zimbabwe

The Standards Association of Zimbabwe maintains electrical industry standards including SAZS 109:1995 for winding wires, covering polyurethane base wires with solderable properties . While this standard addresses a different insulation class, it demonstrates Zimbabwe’s established framework for winding wire certification, and products destined for this market must meet applicable requirements.

Customization Capabilities

Chinese manufacturers, including those based in Henan Province, offer comprehensive customization of PE+PA and PE2+PA winding wires. Conductor diameters can be specified from 0.4 mm to 6.0 mm, with both solid and stranded constructions available . Insulation and sheath thicknesses can be adjusted to meet specific voltage and temperature requirements. For applications requiring higher thermal ratings, PE2+PA constructions with cross-linked polyethylene are available for operating temperatures up to 90°C, while standard PE+PA serves applications up to 70°C .

The customization extends to performance parameters. Manufacturers can supply wire tested to specific national standards, including IS 8783 for India, JB/T 4014 for China, or IEC methodologies for international customers. Water resistance testing, mechanical property verification, and dielectric breakdown strength measurement are performed on finished products to ensure compliance with customer specifications.

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