Lightning protection pin insulator is not only used for the insulation support of overhead lines, but also has the protection function of preventing lightning disconnection, porcelain yard explosion and reducing lightning trip.
With the development of distribution lines and line communication,
the traditional insulated lines are difficult to withstand the effect of
direct lightning or induced lightning. Lightning disconnection and
explosion of porcelain insulators have become another new problem faced
by the power system. FEG High Voltage Line Lightning-Protection Pin Type
Insulator is a two in one product with a new combined structure. It
adopts the design principle of "blocking first and then Dredging". It is
not only used for the insulation support of overhead lines, but also
has the protection function of preventing lightning disconnection,
porcelain yard explosion and reducing lightning trip. Its principle is:
when the lightning overvoltage exceeds a certain value of insulation
blockage, a short-circuit channel is formed between the arc striking rod
and the lower steel pin pf FEG High Voltage Line Lightning-Protection
Pin Type Insulator, flashover and discharge together, and the continuous
power frequency arc will burn at the discharge gap to protect the
conductor from burns. When applied to insulation, the product also has
the function of puncture and power on. Without stripping the insulation
layer, it can avoid water ingress and corrosion of the wire core, make
the line more concise and beautiful, and greatly reduce the cost.
Structural features
1. This product is divided
into puncture type and non puncture type (stripping insulation layer),
which is mainly composed of insulation protection, wire clamping
aluminum alloy fittings, composite insulators, arc striking rods and
lower steel feet
2. The arc striking rod and wire clamping
hardware are assembled into one. When lightning occurs, a short-circuit
channel is formed between the arc striking rod and the lower steel pin,
causing flashover discharge, and the continuous power frequency arc
moves to burn between the arc striking rod and the lower steel pin, so
as to protect the conductor from burns. Because the arc striking rod
bypasses the umbrella skirt and adjusts to the best discharge gap, the
discharge effect is better and the insulator umbrella skirt can be
prevented from burning out.
3. The wire clamping hardware is
constructed of puncture barbed teeth, which can be disassembled, and the
purpose of peeling or not peeling can be selected. The barbed teeth are
made of copper alloy materials with higher strength and better
conductivity than aluminum alloy. The surface is electroplated to
prevent oxidation during copper aluminum bonding, so that both copper
and aluminum conductors can be used
4. The lightning
protection insulator made of conforming materials has better insulation
performance than the electromagnetic insulator, and its creepage
distance is large, which improves the anti pollution level of the
insulator
5. A unique structure has been considered to prevent short circuit hazards to overhead conductors
6. It can withstand the burning of about 5 times of power frequency high current arc
| pec.&Type | System Voltage （kV) | Insulated Conductor Section (mm) | Lightning full wave impulse withstand voltage （peak) kV | 1min Power frequency withstand voltage (effective value) kV | Power Frequency Arc Current (effective value) Ka | Rated Bending Withstand Load (kN) | Minimum Creepage Distance (mm) | Remarks | |
| Dry | Wet | ||||||||
| FEG1-12/5 | 12 | 50/240 | 75 | 42 | 30 | 12.5 | 5 | 400 | Puncture type parallel wire |
| FEG2-12/5 | 12 | 50/240 | 75 | 42 | 30 | 12.5 | 5 | 400 | Puncture type parallel wire |
| FEG3-12/5 | 12 | 50/240 | 75 | 42 | 30 | 12.5 | 5 | 400 | Non-Puncture type parallel wire |
| FEG4-12/5 | 12 | 50/240 | 75 | 42 | 30 | 12.5 | 5 | 400 | Non-Puncture type parallel wire |
