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High-voltage coil frame
High-voltage coil frame

High-voltage coil frame

High-voltage coil frame insulation
Brand Hao Kai Hardware
Origin China
Function High-pressure ignition
Material BMC/PPS
Model HK-01
https://www.hkwujin.com

I. Product Overview

This high-voltage coil frame is made of high-pressure-resistant BMC material, formed by high-temperature molding in a hydraulic mold, specifically designed for use with various pulse ignition and high-voltage step-up electromagnetic coils. The cylindrical body has uniformly distributed multi-layer independent winding grooves, which can separate and isolate primary and secondary enameled copper wires, completely avoiding electrical leakage, breakdown, and short-circuit faults caused by interlaced stacking of high and low-voltage windings; the multi-layer ribbed outer wall structure also assists in coil heat dissipation, reduces winding temperature rise, and extends the transformer's service life.


The hollow cavity in the frame can accurately fit the silicon steel core, and the one-piece molded clips and positioning bosses at both ends can be precisely engaged with the housing, ensuring stable assembly without movement; the pre-buried metal wiring pins on the side walls are directly wrapped and fixed during the winding of the coil, providing a convenient and secure power connection that is not easily pulled out. The BMC material boasts excellent arc resistance, high-temperature resistance, and moisture-proof insulation properties, maintaining stable high-voltage insulation performance without softening, carbonizing, or leakage even in a humid environment.


The cylinder size, wire groove density, and pin layout can be adjusted according to the customer's coil power and winding turns. Support 1:1 physical replication and mold opening. Each product undergoes pressure testing and dimension verification before shipment, and only those meeting electrical performance standards can be supplied in bulk.

Section 2: Core Highlights of Craftsmanship and Workmanship

  1. Integrated high-pressure molding, seamless overall insulation
    The whole cylinder, wire channel, clip, and positioning structure are molded in one go without any jointed layered gaps, eliminating thehidden trouble of high-voltage arc penetration. The insulation reliability is far superior to that of ordinary injection molded nylon frames.
  2. Segmented annular groove design, neat winding arrangement with higher pressure resistance
    Each layer of coil is separated by an independent groove, with the copper wire wrapped neatly and orderly, reducing the distributed capacitance between turns, significantly enhancing the transformer's high-voltage withstand limit, and ensuring more stable operation.
  3. Metal pins pre-buried and embedded, leads resistant to pull and not easy to fall off
    The terminal connectors are firmly embedded within the frame body during the injection molding stage. After the wire ends are wrapped and welded, they have high tensile strength, and there will be no issue of terminal loosening or falling out during winding and assembly.
  4. High-efficiency heat dissipation structure on the outer wall of the bar, effectively reducing the temperature rise of the coil
    The annular ribbed grooves increase the air flow area, promptly dissipating the coil's working heat, avoiding high temperatures accelerating insulation aging, and ensuring slow insulation performance degradation over long-term use.

Section 3: Optional Customized Raw Materials

  1. BMC/DMC Spherical Molding Compounds (Recommended)
    High-pressure resistance, flame-retardant, and optimal arc-resistant properties; the preferred material for household ignition coils and various small high-voltage transformers.
  2. PPS Polyphenylene Sulfide Plastic
    Super high-temperature and chemical corrosion resistance, specially used for high-frequency precision high-voltage equipment.
  3. Flame-retardant reinforced PA66 nylon
    Outstanding cost-performance, suitable for low-voltage, AC conventional small transformer applications.

4. Optional Surface Treatment Processes

Frame shell: Standard gray color, flame-retardant colors such as green, black, beige, etc. can be customized as required.
Metallic pin: Available in three processes - bright nickel plating for corrosion resistance, locally gold-plated contact, and brass in natural color.

V. Applicable Application Scenarios

✅ Natural gas, liquefied gas stove pulse ignition high-voltage coil frame
✅ Car-mounted negative ion generator, home ozone generator step-up transformer base
✅ Old-style TV, various small household appliances power high-voltage winding frame
✅ Small portable high-voltage pulse power supply insulating support frame
✅ Industrial Small Scale Electromagnetic Induction Heating Equipment Coil Insulation Bracket

Chapter 6: Core Product Advantages

  1. All exterior parameters are customizable: barrel diameter, height, number of line grooves, and buckle style can be flexibly adjusted.
  2. Layered isolation channel + dual protection with high-strength insulating base material, not easy to puncture and leak under high-voltage conditions.
  3. High overall mechanical strength of molding, wire tension pull is not easy to crack or deform
  4. High-temperature resistant, moisture-proof, and arc-resistant, suitable for long-term stable use inside equipment prone to heat and humidity.
  5. Support for small-batch new product winding sample verification, sufficient mass production capacity for molding, and controllable delivery cycle.

Chapter 7: Common Procurement Q&A

Q1: What is the maximum pressure resistance of this frame?
A: Standard BMC material has a conventional voltage withstand of 15~35KV, which can be improved by increasing wall thickness and optimizing the slot structure.
Q2: Can the clip be removed and the number and position of the pins changed?
A: Fully supportive, can adjust the number of pins as required, or cancel/modify the end buckle structure.
Q3: Which material is recommended for a continuous high-temperature working environment?
A: Preferably use high-temperature resistant PPS plastic, which can continuously operate at temperatures above 220℃.
Q4: Can the slot width be precisely matched to the wire diameter of the enameled wire?
A: Yes, the slot width and wire slot turns are precisely designed based on the copper wire thickness and total number of turns.

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