Laminated Slot Wedge and Spacer Strip

Model	Product Name	Thermal Class	Features and Applications
YD3240	Epoxy Laminated Slot Wedge	B	Made from epoxy-phenolic resin binder and alkali-free electrical glass fiber cloth via impregnation, hot pressing and machining. Good mechanical strength (flexural strength: 340 MPa at RT, 120 MPa at 130°C), dielectric properties, moisture and oil resistance. Suitable for slot wedge of ordinary motor stator, rotor and transformer.
YD3241	Semi-conductive Epoxy Laminated Slot Wedge	F	Made from semi-conductive modified epoxy resin binder and alkali-free electrical glass fiber cloth via impregnation, hot pressing and machining. Good mechanical strength and heat resistance. Insulation resistance 10⁴—10⁶ Ω. Used as anti-corona slot wedge for various generators and high-voltage motors.
YD3242	High-strength Epoxy Laminated Slot Wedge	F	Made from high-strength epoxy resin binder and alkali-free electrical glass fiber cloth via impregnation, hot pressing and machining. High hot mechanical strength (flexural strength ≥200 MPa at 150°C), excellent tracking resistance (CTI≥600V), good moisture and oil resistance. Suitable for medium and high voltage motors and large power motor stator and rotor.
YD3248	High-strength Epoxy Laminated Slot Wedge	F	Made from high-strength epoxy resin binder and alkali-free electrical glass fiber cloth via impregnation, hot pressing and machining. High mechanical strength (flexural strength ≥200 MPa at 150°C, tensile strength ≥270 MPa at RT), excellent tracking resistance (CTI≥600V), good heat resistance. Suitable for medium and high voltage motors and large power motor stator and rotor.
YD3251	Heat-resistant Epoxy Laminated Slot Wedge	H	Made from high-temperature epoxy resin binder and alkali-free electrical glass fiber cloth via impregnation, hot pressing and machining. High mechanical strength (flexural strength ≥170 MPa at 155°C), excellent tracking resistance, stable electrical properties at high humidity. Suitable for F, H-class high-voltage motors and transformers.
YD3252	DIPhenyl Ether Laminated Slot Wedge	H	Made from DIPhenyl ether resin coated glass cloth via hot pressing and machining. High mechanical properties, dielectric properties and radiation resistance, excellent heat stability. Suitable for H-class various motor stator, rotor and transformer.
YD3261	Modifiedimide Laminated Slot Wedge	C	Made from modified bismaleimide resin and alkali-free electrical glass fiber cloth via impregnation, hot pressing and machining. Excellent mechanical properties (flexural strength ≥400 MPa at RT, ≥200 MPa at 180°C) and dielectric properties, good heat stability and radiation resistance. Suitable for wind power generators and nuclear power generators.
YD3244	Epoxy Flame Retardant Slot Wedge	F	Made from electrical glass fiber cloth impregnated with flame retardant modified epoxy resin via hot pressing and machining. High mechanical strength (flexural strength ≥415 MPa, Tg≥135°C), stable dielectric properties at high humidity, flame retardancy up to UL94-V0. Suitable for B, F-class motors and transformers with flame retardant requirements.
YD3245	High-temperature Flame Retardant Slot Wedge	F	Made from halogen-free flame retardant epoxy resin binder, electrical glass fiber cloth and reinforcement additives via impregnation, hot pressing and machining. Good heat resistance (Tg=150°C), high mechanical strength (flexural strength ≥400 MPa), low thermal expansion coefficient, flame retardancy up to UL94-V0. Suitable for B, F-class motors and transformers with flame retardant and high temperature requirements.
YD3247	Halogen-free Flame Retardant Phenolic Slot Wedge	F	Made from treated electrical glass fiber cloth impregnated with benzoxazine resin via hot pressing and machining. Excellent high-temperature mechanical strength (flexural strength ≥250 MPa at 150°C) and heat resistance, flame retardancy up to UL94-V0. Suitable for F-class motors and transformers with halogen-free flame retardant and high-temperature strength requirements.
YD3341	Epoxy Magnetic Laminated Slot Wedge	F	Made from electrical glass cloth, epoxy resin binder, magnetic iron powder and modified additives via special process, hot pressing and curing. High mechanical strength and heat resistance, good magnetic conductivity. Suitable for wind power generator and high-voltage motor stator and rotor coils.
YD3351	Heat-resistant Magnetic Laminated Slot Wedge	H	Made from electrical glass cloth, high-temperature epoxy resin binder, magnetic iron powder and modified additives via special process, hot pressing and curing. High mechanical strength (flexural strength ≥100 MPa at 180°C) and relative magnetic permeability. Improves motor efficiency and reduces operating noise. Suitable for F, H-class wind power generators, high-voltage motors and other special motors.

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