DuPont Case Histories for Electrical Insulation Systems

Displaying histories 1 through 22 of 22 histories found.

	King-Size Bobbin Takes the Heat in Electric Car The built-in battery charger for the new electric-powered 'Th!nk' city car relies on a large bobbin molded from Rynite®. The bobbin is part of a transformer coil assembly in a fivestage charger that plugs into an ordinary 110 V alternating current outlet. The transformer coil converts the power supply to 72 V direct current for charging the vehicle battery. The bobbin measures 5.5 in. high by 4.25 in. wide (140 by 108 mm). It holds both primary and secondary coil windings, which are separated by an insulating flange. The finished coil is placed in a water-tight cast aluminum housing.
	DuPont™ Engineering Polymers Helps Make Energy Efficient Motor A high-efficiency, variable speed fan motor with patented technology RF200 lends itself to DuPont Rynite® PET and Zytel® nylon resins. The RF200 motor has a shaft power rating of up to 1 hp.
	DuPont™ Rynite® PET Reduces Cost and Weight of Compact, Ultra Low Noise Motor A new form of electronically commutated, external rotor motor with patented technology to adapt to different appliances relies on DuPont Rynite® PET and Zytel® nylon resins. The RF66 is a variable speed motor with a shaft power rating of up to 50W (1/16 hp).
	Encapsulated Solenoid Stands Up to Aggressive Chemicals Manufacturer relies on Zytel® HTN high performance polyamide in producing fully encapsulated solenoids for a family of compact valves used in laboratory and industrial equipment and instruments. Zytel® HTN serves for the solenoid’s coil form and its protective outer shell. The solenoids are then used in Inert Isolation Valves. The valves are engineered to control the flow of high-purity or aggressive fluids including reagents, alcohol, sodium hypochlorite, formaldehyde, sodium hydroxide, etc.
	Coil Encapsulation Improves Class F Motor's Protection Against Heat, Moisture Hansen Corporation has upgraded the performance of its Synchron™ synchronous timing motors for Class F (155°C) service by encapsulating their stator coils with Rynite® PET. The coils were formerly wrapped with tape, and some were coated with varnish. The motors' coil forms are also molded from Rynite® PET. The redesigned units are the first Class F timing motors to deliver the benefits of thermoplastic encapsulation technology to users. The motors are chiefly used to control and operate vents and valves in heating, ventilation and air conditioning (HVAC) systems.
	The perfect partner for encapsulation Encapsulated Solenoid Pump for appliances. UL Class 155 (F) Insulation.
	Switch to Rynite® PET, Delrin® Streamlines Valve Production A solenoid-operated valve has been designed using Rynite® PET thermoplastic polyester resin and Delrin® acetal resin. The solenoid assembly is encapsulated with Rynite® PET thermoplastic polyester resin instead of epoxy. The coil bobbin is injection molded from Rynite® PET or, for valves installed in food or beverage equipment, from Delrin® acetal resin. The valve body, formerly machined in brass, stainless steel or aluminum, is now injection molded from Delrin® . Valve serves in humidifiers, pneumatic factory automation systems, beverage dispensers and other equipment.
	EIS Use, Automated Coil Production Pay Off in Contactor Coil An electrical contactor for controlling power in industrial equipment has a coil assembly having a multi-functional bobbin and cover injection molded from DuPont Rynite® brand PET thermoplastic polyester resin.
	Plastron Bobbin Helps Jakel Make a First-Class Blower Motor C-frame shaded pole motor for furnace blower relies on a custom-designed coil bobbin molded from Zytel® nylon resin.
	Homologated insulation system of Rynite® facilitates entry to export markets Encapsulated oscillating pump for carpet cleaner.
	Motor Bobbin Meets Needs for Automated Assembly, Wide Use Custom-designed bobbin molded from Rynite® PET thermoplastic polyester resin serves in fractional horsepower, two-pole, shaded-pole motors with a stack height of 1.5 inch (38 mm). Fasco currently supplies a Class B blower motor using the bobbin to a manufacturer of portable space heaters. The bobbin is available to meet Fasco's customers' needs in similar motors for furnaces, pumps, dryers and other equipment.
	Coil bobbins of Crastin® meet class F criteria Coil bobbin, coil former.
	Coil forms for transformers, power supply chokes Coil forms injection molded from Rynite® PET thermoplastic polyester resin serve in transformers or chokes for applications such as electronic power supplies.
	Bobbin serves in transformer for furnace controls A custom bobbin injection molded in Rynite® PET thermoplastic polyester resin serves in a compact 24 V, 40 VA transformer developed by Honeywell Inc. to power its residential, commercial and industrial furnace controls. The bobbin is designed for automated insertion of solderless insulation-displacement terminations. It is sized for EI 87 laminations with a stack height of 3/4 in. (19 mm).
	Bobbins for telecommunications devices Bobbins for telecommunications devices are injection molded in Rynite® PET thermoplastic polyester resin.
	Self-insulating stator structure for novel d.c. brushless motors Self-insulating stator structure for novel d.c. brushless motors consists of injection molded components in Rynite® PET thermoplastic polyester resin. The motor's patented design eliminates or greatly reduces the need for iron cores, allowing use of simple, inexpensive electronic controls. It also provides exceptional efficiency. Target applications include washing machines, vacuum cleaners, HVAC fans and blowers, golf carts, disability vehicles, pumps, garage door openers, hospital beds and alternators.
	Multifunctional armature insulator (spider) New standard injection mold base makes it even more economical to make a spider or multifunctional armature insulator in Rynite® PET thermoplastic polyester resin. Built by a leading UL-recognized component molder in cooperation with DuPont, the mold base can accept up to eight cavity inserts. It can make spiders up to 2.4 in. (61 mm) in diameter with integral shaft insulating sleeves up to 1.4 in. (36 mm) long.
	Coil bobbins offer termination options, snap-fitting shrouds These coil bobbins offer several termination options. The parts shown have slots for direct termination of magnet wire to soft leads. The bobbins are also available with pockets for conventional terminals, with provisions for termination to an insulation displacement connector or with a holder for a thermal cutoff. Nine sizes are available, from 0.625 by 0.625 in. (16 by 16 mm) to 1.0 by 1.5 in. (25 by 38 mm). The bobbins are used with two L-shaped shroud components that snap-fit together. Both bobbins and shrouds are injection molded from Rynite® PET thermoplastic polyester resin.
	Coil former of electromagnetic ballast Coil former of electromagnetic ballast.
	Instrument transformer components Outer casing and core jacket in Rynite® PET thermoplastic polyester resin for toroidal 600 V current transformers used to monitor electrical flow. The core jacket goes between the transformer’s ferrite core and windings to prevent damage to the magnet wire by the core’s sharp edges. The outer casing insulates the transformer from a primary conductor, which passes through the hole in its center. Consisting of two parts joined with hot-melt adhesive, the casing also protects against mechanical damage and the entry of foreign matter.
	Coil bobbins for use with ferrite magnetic cores Made of Rynite® PET thermoplastic polyester resins based on flame-retarded PET, these coil bobbins are specially designed for use with ferrite magnetic cores in computer power supplies, lighting ballasts and various other applications. The model at the left is a PQ type for high power-to-unit-volume coils operating in the 20 to 500 W range. Molded in Rynite®, it is available in seven sizes from 20 to 40 mm long. The other two units shown are ETD types for power conversion applications from 150 to 1000 W. The center unit is designed for vertical mounting on a board, the one on the right for horizontal mounts. Both are made of Rynite® and are supplied in four sizes ranging from 34 to 49 mm long.
	Stock bobbins come in a range of sizes, including extra-large Bobbins shown are examples from a wide range of stock bobbins made of DuPont Rynite® PET thermoplastic polyester resins. Parts in rear of photo are representative of Michael's king-size bobbins for three-phase transformers for up to 10 kVA. Part at right rear, measuring 224 mm (8.8 in.) long by 68 mm (2.7 in.) high, serves in 4 to 5 kVA transformers. Bobbins in foreground comply with VDE 0551 specifications applicable to 'safety' transformers.

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