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Rated Voltage: 10kv-36kv
Application: High Voltage
Material: Porcelain
Type: Insulator
Model Number: Porcelain station post insulator
Brand Name: JUNAI
Place of Origin: China (Mainland)
COLOR: WHITE

Specifications

Porcelain station post insulator is used in substations, stations and electrical device for 1200kv for supporting and insulating. 69.5kV, 72kV and other high voltage Porcelain station post insulator is popular post insulators made by wet process porcelain or dry process porcelain with excellent mechanical strength. Porcelain station post insulator is solid core insulator used with flange to fix on insulators. Over 220kV post insulators need used with two grading rings.

Porcelain station post insulator
1. ANSI porcelain station post insulators are used as in the electrical system in the switchyards and substations. ANSI porcelain station post insulators are manufactured, tested and designed in accordance with ANSI C29.1 and ANSI C29.9-83 standards, used with flange.

2. IEC ceramic station post insulator are also called ceramic solid core post insulators and can be divided into outdoor station post insulators and indoor station post insulators. According to insulator installation way, IEC ceramic station post insulator can be divided into capped station post insulator and capless station post insulator.
Including TR202, TR205, TR208, TR210, TR214, TR216, TR222, TR225, TR227, TR231, TR267. The main technical data is as follows:

            

ANSI Type  
Leakage distance mm 267 394 610 940 1092 1892 610 394 610 940 1092
Cantilever strength KN 8.9 8.9 8.9 8.9 8.9 6.7 17.8 17.8 17.8 17.8 17.8
Tension strength KN 31.1 38 44.5 53 62 71 66.7 89 89 111.2 111.2
Torsion strength N.m 678 791 904 1130 1356 1695 2101 2452 2802 3502 3502
Compression strength KN 44.5 44.5 44.5 66.7 66.7 111 89 89 89 133.4 266.9
Low frequency test voltage KV 5 10 15 22 30 44 5 10 15 22 30
Critical impulse flashover positive voltage KV 105 125 170 225 280 390 105 125 170 225 280
Low frequency wet withstand voltage KV 30 45 60 80 100 145 30 45 60 80 100
Impulse withstand voltage KV 95 110 150 200 250 350 95 110 150 200 250

TR278, TR286, TR287, TR288, TR289, TR291, TR295, TR304, TR308, TR312, TR316 porcelain station post insulators main technical data:

            

ANSI Type  
Leakage distance mm 1892 2515 2515 2946 2946 3234 3234 4191 4191 5029 5029
Cantilever strength KN 13.3 31.1 11.6 6.23 9.8 5.34 8.23 4.23 6.45 3.56 5.56
Tension strength KN 111.2 89 111.2 89 111.2 89 111.2 89 111.2 89 111.2
Torsion strength N.m 7005 7005 15760 7005 15760 7005 15760 7005 15760 7005 15760
Compression strength KN 266.9 266.9 333.6 267 333.6 267 333.6 267 333.6 267 333.6
Low frequency test voltage KV 44 73 73 88 88 103 103 146 146 146 146
Critical impulse flashover positive voltage KV 390 610 610 710 710 810 810 1010 1010 1210 1210
Low frequency wet withstand voltage KV 145 230 230 275 275 315 315 385 385 455 455
Impulse withstand voltage KV 350 550 550 650 650 750 750 900 900 1050 1050

TR362, TR324, TR367, TR368, TR369, TR330, TR371, TR372, TR373, TR379, TR391 porcelain station post insulators main technical data:

            

ANSI Type  
Leakage distance, mm mm 5029 5659.5 5659.5 5659.5 5659.5 6705.6 6705.6 6705.6 6705.6 7112 8382
Cantilever strength, KN KN 10.23 4.45 6.45 8.9 9.12 4 5.2 7.78 7.78 7.56 6.23
Tension strength, KN KN 178 111.2 89 178 89 111.2 89 178 89 89 89
Torsion strength, N.m N.m 21014 15760 7005 21014 7005 15760 7005 21014 7005 7005 7005
Compression strength, KN KN 444.8 333.6 267 444.8 267 333.6 267 444.8 267 267 267
Low frequency test voltage, KV KV 146 220 220 220 220 220 220 210 220 318 318
Critical impulse flashover positive voltage, KV KV 1210 1410 1410 1410 1410 1610 1610 1610 1610 1710 2000
Low frequency wet withstand voltage, KV KV 455 525 525 525 525 590 590 590 590 620 710
Impulse withstand voltage, KV KV 1050 1300 1300 1300 1300 1470 1470 1470 1470 1550 1800

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