ANSI 55-4 Porcelain Pin Type Insulator
- ANSI 55-4 pin porcelain insulators are mainly used for medium voltage distribution lines.
- Ceramic pin insulators are installed on the needle sockets on the cross arms of electric poles.
- The upper end of the insulator is equipped with a groove, through which the wire passes and is tied to the insulator with a wire of the same material as the wire.
- Needle insulators are suitable for transmission and distribution lines with voltages up to 33 kV. When the working voltage exceeds 33 kV, the pin type insulators become too bulky and hence uneconomical.
- Ideal for both urban and rural power distribution networks.
- Brand: QOCI
- Catalog ID: ANSI 55-4
- Type: Pin Insulator
- Material: Porcelain
- Place of Origin: Jiangxi
Dimensional data
|
Spacing (S) |
4 3/8 inch 111 mm |
|
Diameter (D) |
5 1/2 inch 140 mm |
|
Leakage distance (C/D) |
9 inch 229 mm |
|
Dry arcing distance： |
5 inch 127 mm |
| Minimum pin height: |
5 inch 127 mm |
Mechanical values
|
Combined M&E strength: |
3,000 lb 13.3 kN |
Electrical Values
|
Low frequency dry flashover voltage: |
65 kV |
|
Low frequency wet flashover voltage: |
35 kV |
|
Critical impulse flashover voltage, positive: |
105 kV |
|
Critical impulse flashover voltage, negative: |
130 kV |
|
Low frequency puncture voltage: |
95 kV |
|
Type application voltage: |
13.2 kV |
Radio-influence Voltage
|
RIV test voltage rms to ground Maximum RIV at 1000 kHz |
10 kV 50 μV |
|
Corona visual lest P/C |
18/22 KV |
Packing information
|
Approx. net weight per unit |
4.1 lb 1.86 kg |
|
Pallet Quantity |
420 |
Industry Standard(s)
Manufactured according to ANSI C29.5
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