Porcelain Pin type insulator is made by wet process porcelain used for 6kV to 36kV overhead and poles, usually installed with insulator pin / spindle on wood and iron cross arms. Porcelain Pin type insulator consists of one or more porcelain units and insulator end fittings. Using the performed wire fixed Porcelain pin type insulators on the electrical poles, distribution overhead lines and other electrical systems. A pin insulator is an insulator having means for rigid mounting on a separable pin.

ANSI 55series porcelain pin type insulator drawings, images and main technical data are showing as follow:

Type
Creepage distance-mm			102	127	178	229	305
Flashover  voltage-kV	Power frequency	Dry	35	45	55	65	80
		Wet	20	25	30	35	45
	50% impulse	Pos.	50	70	90	105	130
		Neg.	70	85	110	130	150
Radio influence  voltage	Test voltage to ground-KV		5	5	10	10	15
	Max. RIV at 1000kHz-μv		50	50	50	50	100
Low freq. Puncture voltage-kV			50	70	90	95	115
Dry arcing distance-mm			57	86	114	127	159
Cantilever failing load-lb/KN			3000/13	2500/11	2500/11	3000/13	3000/13

ANSI 56 series porcelain pin type insulator drawings, images and main technical data are showing as follow:

Type
Creepage distance-mm			330	432	533	686	865
Flashover  voltage-kV	Power frequency	Dry	95	110	125	140	175
		Wet	60	70	80	95	125
	50% impulse	Pos.	150	175	200	225	270
		Neg.	190	225	265	310	340
Radio influence  voltage	Test voltage to ground-KV		15	22	30	30	44
	Max. RIV at 1000kHz-μv		100	100	200	200	200
Low freq. Puncture voltage-kV			130	145	165	185	225
Dry arcing distance-mm			178	203	229	279	356
Cantilever failing load-lb/kN			2500/11	3000/13	3000/13	3000/13	3000/13

Low voltage pin insulator is tested in accordance with ANSI C29.1 standards. The pin insulator drawings, images and main technical data are showing as follow: