56-4 Porcelain Pin Insulator for Transmission and Distribution

• Application: High-voltage, High-temperature
• Material: Porcelain
• Structure: Pin Insulator
• Type: Pin Type
• Usage: High Voltage Power Transmission, Insulation, Electrical Installation
• Connection Method: Trough Type
• Model NO.: 56-4
• Certification: ISO9001
• Color: Brown
• Brand: Tkbl
• Guarantee: 1 Year
• Delivery Time: 50 Days
• OEM: Accept
• ODM: Accept
• Transport Package: Carton+Pallet
• Specification: As per customer specified
• Trademark: TKBL
• Origin: China
• HS Code: 8546209090
• Production Capacity: 500000/Year

Product Description

56-4 Porcelain Pin Insulator for Transmission and Distribution

About the Porcelain pin type Insulator

As the name suggests, the pin type insulator is mounted on a pin on the crossarm on the pole. There is a groove on the upper end of the insulator. The conductor passes through this groove and is tied to the insulator with annealed wire of the same material as the conductor. Pin type insulators are used for transmission and distribution of electric power at voltages up to 33 kV. Beyond operating voltage of 33 kV, the pin type insulators become too bulky and hence uneconomical.

- Advantages of Porcelain pin type Insulator
- High reliability through accumulated technology
- Excellent long-term performance

Specifications
 1. original insulator producer 
 2. superior properties of low and medium temperature resistance;
 3. strong aging resistance;
 4. nice appearance & long service time.
 5. comman glaze and semi-conductor glaze, color brown and gray both available.
 6. free sample, professional porcelain insulator supplier.

ANSI CLASS		56-1	56-2	56-3	56-4	56-5
Fig. No.		1 / 2	1 / 2	3	3	4
Main Dimension(mm)	H	146	165	191	241	318
	h	50.8	50.8	50.8	50.8	63.5
	D	191	228	267	305	343
	d	34.9	34.9	34.9	34.9	34.9
	R1	19	19	19	19	19
	R2	14	14	14	14	14
Leakage Distance (in)		13	17	21	27	34
Dry Arcing Distance (in)		7	8	9	11	14
Low Frequency Voltage	Dry Flashover	95	110	125	140	175
	Wet Flashover	60	70	80	95	125
	Puncture	130	145	165	185	225
Critical Impulse Flashover	Positive/kV	150	175	200	225	270
	Negative/kV	190	225	265	310	340
Radio Influence voltage	Test Voltage	15	22	30	30	44
	Plain	8000	12000	16000	16000	25000
	Radio Freed	100	100	200	200	200
Cantilever Strength (lb)		2500	3000	3000	3000	3000