Machined Slot Wedge

Suitable for securing F-, H-, and C-class electrical stator and rotor windings in traction, metallurgical, heavy-duty, aerospace, and general industrial motors.

Keywords:

insulation Material

Category:

Slot Wedge Series

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Wind power generation

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Product Description

Product Applications

Product Description:

Machined slot wedges are manufactured by machining various laminated insulation materials.

The insulation thermal classes can reach F and H classes.

Performance Features:

Machined slot wedges exhibit excellent mechanical and dielectric properties; they also offer additional advantages such as flame retardancy, chemical resistance, radiation resistance, tracking resistance, and dimensional stability.

Main uses:

It is suitable for securing stator and rotor windings in F- and H-class motors, including traction, metallurgical, heavy-duty, aerospace, and general industrial motors.

Performance Specifications for H-Class Machined Slot Wedges

Serial number	Performance		Unit	Nominal thickness of test plates, mm	Requirements
1	Vertical layering Flexural strength	Normality	MPa	1.6≤d≤10	≥500
1	Vertical layering Flexural strength	180℃±2℃	MPa	1.6≤d≤10	≥320
2	Parallel-layer impact strength (simply supported beam, notched)		KJ/m2	≥4	≥42
3	Parallel-layer shear strength		MPa	≥5	≥28
4	Tensile strength		MPa	≥1.6	≥320
5	Vertical layer-to-layer dielectric strength in oil at 90°C ± 2°C	Plate thickness 0.5–1.0 mm	MV/m	≤3	≥20
		Plate thickness: 1.1–2.0 mm			≥18
		Plate thickness: 2.1–3.0 mm			≥16
6	Parallel-layer breakdown voltage (in oil at 90°C ± 2°C)		kV	≥3	≥35
7	Dielectric loss factor		-	≤3	≤0.05
8	Relative permittivity		-	≤3	≤5.5
9	Insulation resistance after immersion		MΩ	All	≥1.0*102
10	Density		g/cm3	All	1.7-1.9
11	Water absorbency		mg	All	See Table 4.
12	Temperature Index		-	≥3	180
Note: Key process parameters for application: maximum operating temperature 180°C; Martin heat resistance temperature 250–270°C.

Technical requirements shall be in accordance with the national standard GBZ 21215-2007.

We can customize the production of products in various models, performance levels, and specifications according to customer requirements.

Table 4

Average specimen thickness/mm	Water absorption/mg	Average specimen thickness/mm	Water absorption/mg	Average specimen thickness/mm	Water absorption/mg
0.5	≤17	2.5	≤21	12	≤38
0.6	≤17	3.0	≤22	14	≤41
0.8	≤18	4.0	≤23	16	≤46
1.0	≤18	5.0	≤25	20	≤52
1.2	≤17	6.0	≤27	25	≤61
1.6	≤19	8.0	≤31	Single-sided machining to 22.5	≤73
2.0	≤20	10	≤34	Single-sided machining to 22.5	≤73