Line Column Composite Insulator
Composite line posts for 10 kV, 4 kN and 5 kN, with the same mounting as the porcelain pin they replace.
- Rated voltage
- 10 kV
- Rated load
- 4 and 5 kN
- Creepage
- 300–420 mm
- Length
- 215–250 mm
A composite line post does the job of a pin insulator on a 10 kV arm, in one moulded part. The core takes the bending load where the porcelain body would crack, and the silicone housing sheds water instead of wetting out.
The fixing is made to the same centres as the porcelain pin, so a line can be rebuilt with these without changing the cross-arm or the spindle. Four types are made, at 4 kN and 5 kN.
Specifications
Values published for each type. Shed diameter is given as the large and small pair.
| Type | Rated voltagekV | Rated mechanical loadkN | Lengthmm | Minimum arcing distancemm | Minimum creepagemm | Shed diametermm | Lightning impulse withstandkV | Power-frequency withstandkV |
|---|---|---|---|---|---|---|---|---|
| FPQ-10/4T20 | 10 | 4 | 215 | 125 | 300 | 148 / 110 | 75 | 42 |
| FPQ4-10/4T15 | 10 | 4 | 250 | 165 | 420 | 148 / 110 | 105 | 42 |
| FPQ4-10/5T15 | 10 | 5 | 250 | 165 | 420 | 148 / 110 | 105 | 42 |
| FPS-105/5 | 10 | 5 | 250 | 180 | 380 | 90 | 105 | 42 |
The T in the designation marks the threaded foot; FPS is the plain-shed version with a 90 mm shed.
Choosing a Type
Same Footprint
The mounting matches the porcelain pin insulator, so the arm and the spindle stay as they are.
Creepage Choice
300 mm covers clean routes; 420 mm is the polluted-route version, 35 mm longer and with a bigger arcing distance.
Every unit is routine-tested before it is packed, and each type is type-tested before it is offered for supply.
Ask about Line Column Composite Insulator
Send the type designation, the quantity and the standard the project is working to. We reply with a price and a delivery date.
We usually reply within one working day.