Pultruded Slot Wedge and Pressure Strip

Model	Product Name	Thermal Class	Features and Applications
YD3957	High-strength Pultruded Slot Wedge	H	Made from special thermosetting bonding resin and glass fiber via special process. High mechanical strength (flexural strength ≥450 MPa at RT, ≥220 MPa at elevated temperature), good integrity (cleavage strength ≥8000 N/10mm), heat deformation resistance (Tg>250°C), excellent tracking resistance (≥600V). Suitable for wind power motors, generators and transformer coils.
YD3953	Bidirectional Pultruded Epoxy Spacer strip	H	Made from modified heat-resistant epoxy resin and glass fiber via special process. High mechanical strength (flexural strength ≥400 MPa at RT, ≥200 MPa at elevated temperature), excellent insulation, good rigidity, heat deformation resistance (Tg>230°C). Mainly used as slot spacer strip for wind power motor coils.
YD3956	Bidirectional Pultruded Epoxy Slot Wedge	H	Made from heat-resistant modified epoxy resin and glass fiber via special process. High mechanical strength (flexural strength ≥400 MPa at RT, ≥200 MPa at elevated temperature), good integrity (cleavage strength ≥7000 N/10mm), heat deformation resistance (Tg>230°C), excellent tracking resistance (≥600V). Suitable for F and H insulation class wind power motors, generators and transformer coils.
YD3962	High-temperature EMU Pultruded Slot Wedge	C	Made from high-temperature thermosetting resin and modified glass fiber via specific process. High mechanical strength, good integrity (cleavage strength ≥8000 N/10mm), excellent heat resistance (Tg>250°C, thermal weight loss ≤2% at 240°C for 480h), good tracking resistance. Suitable for rail transit traction motors and other special motors.
YD3966	Transformer Pultruded Spacer Strip	C	Made from high-temperature thermosetting resin and modified glass fiber via specific process. High mechanical strength, good integrity, excellent heat resistance, good tracking resistance. Suitable for rail transit locomotive transformers and traction motors.
YD3950	Halogen-free Flame Retardant Pultruded Slot Wedge	F	Made from flame retardant epoxy resin binder, glass fiber via pultrusion process. Good flexural and impact strength, low water absorption, V-0 flame retardant. Suitable for B, F-class motors and transformers with flame retardant requirements.
YD3951	Halogen-free Flame Retardant Pultruded Slot Wedge	H	Made from halogen-free flame retardant modified epoxy resin binder, pre-treated glass fiber and additives via pultrusion process. Excellent mechanical strength and heat resistance, chemical corrosion resistance, V-0 flame retardant. Suitable for F/H-class motors and transformers with flame retardant requirements.
YD3945	Epoxy Magnetic Slot Wedge	F	Made from epoxy resin binder, magnetic iron powder and electrical glass fiber reinforcement via specific process. Good mechanical strength, heat resistance and magnetic conductivity, uniform structure without delamination. Widely used as slot wedge for motor stator/rotor and transformer for energy saving effect.

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