Porcelain spool insulator is an insulator of generally cylindrical form having an axial mounting hole and circumferential groove or grooves for the attachment of a conductor. Porcelain spool insulator usually used America consisting of one or more insulating parts to which connecting devices (metal fittings) are often permanently attached. Porcelain spool insulator or spool type insulator usually used similarly to shackle insulator.
ANSI porcelain spool Insulator main technical data, drawings and images for ANSI porcelain spool insulator is showing as follow:
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ANSI Class
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Fig NO.
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1
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2
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3
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4
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5
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Main dimensions (mm)
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Height (H)
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54
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76
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81
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76
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105
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Diameter (D)
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57
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80
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76
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105
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102
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Hole Diameter (d)
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17.5
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17.5
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17.5
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17.5
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17.5
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Groove Radius (R)
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11
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17.5
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11
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16
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11
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Strength (KN)
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8.9
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13.3
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17.8
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20
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27
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Low frequency flashover voltage (KV)
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Dry
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20
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25
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25
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25
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35
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Wet
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Vertical
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8
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12
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12
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25
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18
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Horizontal
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10
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15
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15
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15
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25
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Standard
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ANSI
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ANSI
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ANSI
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ANSI
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ANSI
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