Parallel Groove Clamp
Adaptable to use as an oblique tap or parallel connector, the parallel groove clamp (PG Clamp) is designed to connect two conductors in parallel and especially used to hold transmission conductors in parallel in transmission lines.
Made up of high-strength aluminium alloy bolts, the parallel groove clamps are designed to maintain high contact pressure during cooling and heating cycles.
The 396.6, 395.5, and 490.0 are the rotational tightening method for clamp which provides accurate torquing.
The main feature of the parallel groove is its easy installation, simple structure and bolt-type power connector, which makes it a unique product. For a reliable tightening, a spring washer and pressure pad are inserted under the bolt head of the clamp.
The upper and lower regions are the two parts of the connector while they have two parallel grooves to receive the aluminium clamps, which are made out of high strength aluminium. In bimetallic clamps, the high strength electrolytic copper makes the copper clamp.
ACCESSORIES USED WITH PARALLEL GROOVE CLAMPS ARE:Â
- Welded copper
- Dacromet steel bolts
- Belleville washers to prevent thermal ratcheting
- Oxide inhibitor
- Hot dip-galvanized steel bolts
- Clamp connector
- Aluminium bimetal
FEATURES
- High corrosion resistance
- The hot-forged finish in aluminium alloy construction
- Nuts in hot-dip galvanized finished and washer supporter for corrosion protected
- Copper-based conductors
- Stainless steel based bolts
- Holding support of transmission conductors
| Item No. | Size(mm²) | Bolt | Gross Weight | Net Weight |
| APG-A1 | AL16-70 | Single bolt | 16 | 15 |
| APG-A2 | AL16-150 | Single bolt | 24.4 | 23.4 |
| APG-B1 | AL16-35 | Double bolts | 17 | 15.84 |
| APG-B2 | AL16-70 | Double bolts | 23 | 22 |
| APG-B3 | AL16-150 | Double bolts | 34.6 | 33.6 |
| APG-B4 | AL25-200 | Double bolts | 34.6 | 33.6 |
| APG-C1 | AL16-150 | Tri-bolts | 26.2 | 25.2 |
| APG-C2 | AL25-200 | Tri-bolts | 31.3 | 30.3 |
| APG-C3 | AL35-300 | Tri-bolts | 26.6 | 25.6 |
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Frequently asked questions (FAQ)
What is a parallel groove clamp(PG Clamp)?
For closing a loop of one conductor to fit on an insulator, the parallel groove clamp is designed to connect parallel conductors, while these connectors are composed of two parts known as upper and lower parts.
How is the parallel groove clamp used?
The parallel groove clamp is used to connect ACSR and aluminium conductors with high strength aluminium alloy.
What is the function of the parallel groove clamp?
The clamp base section forms a weather shield in parallel groove clamp for the grooves which helps the compound to stay in place to help the connection last longer.
How do you install a parallel groove clamp?
- Do not cut the strands from the conductor or double over strands of the conductor to make it fit until you get the correct size of the clamp.
- Make the PG clamp and conductor ready by brushing the contact surfaces to remove the oxide.
- Lavishly apply grease over the brushed area of the conductor only to ensure that the entire area is being covered properly.
NOTE: white brush for aluminium
black brush for copper