LINE POST INSULATOR

Catalog No.	P57-1G	P57-2G	P57-3G	P57-11G	P57-12G	P57-21G	P57-22G	P2127G
Dimensions (inches)
Leakage Distance	14	22	29	14	22	14	22	15
Dry Arcing Distance	6-1/2	9-1/2	12-1/4	6-1/2	9-1/2	6-1/2	9-1/2	7-3/4
Height of Middle of Single Cap Screw	…	…	…	10	13	10-1/8	13-1/8	…
Diameter	…	…	…	6	6-1/2	6	6-1/2	…
Mechanical Values (Ibs.)
Cantilever Strength*	2,800	2,800	2,800	2,800	2,800	2,800	2,800	2,800
Electrical Values (kV)
Usual Line Voltage	25	35	45	25	35	25	35	…
Low Frequency Dry Flashover	70	100	125	70	110	70	110	95
Low Frequency Wet Flashover	50	75	95	50	85	50	85	65
Impulse Flashover, Positive	120	160	200	120	180	120	180	135
Impulse Flashover, Negative	155	205	260	155	205	155	205	190
Radio Influence Voltage Data
Test Voltage ,RMS to Ground(kV)	15	22	30	15	22	15	22	20
Maximum RIV at 1000 kHz (µV)	100	100	200	100	100	100	100	50
Packing & Shipping Data
Minimum Net Weight	14.3 lbs	19.1 lbs	26.3 lbs	16 lbs	25 lbs	15 lbs	21 lbs	10 lbs
Packed Weight Per Unit	17.6 lbs	23.9 lbs	30.6 lbs	19 lbs	27 lbs	18 lbs	25 lbs	13 lbs
Standard Package Quantity	4	3	2	3	2	2	2	4
Insulator Coatings
Gray Glaze	Standard	Standard	Standard	Standard	Standard	Standard	Standard	Standard