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Product Description
TerraFill TF-50 and TF-25 (Low Resistivity Grounding Backfill) provides a simple method of substantially lowering the earth resistance of grounding systems. When used with copper grounding equipment, contact resistance to earth is lowered by up to 63%. TerraFill produces lower steady state and stable grounding impedance, resulting in a reliable, low resistance lectrical connection between the grounding system and the earth.
Once installed, TerraFill TF-50 and TF-25 is maintenance free and does not require the presence of H2O to maintain its conductivity properties.
Features & benefits:
- Easily applied
- Does not require water
- Produces lower stable grounding impedance, and lower surge impedance resulting in faster transient dissipation
- Excellent shelf life with long-term performance
- Manufactured to be compatible with copper grounding systems and standard field application methods
- Can be used in connection with grounding grids to minimize step and touch potentials
- Produces acceptable grounding impedance in high-resistivity soils, within a reasonably sized area
- Versatile – applying TerraFill® to lower the ground resistance of grounding equipment allows for a variety of earthing designs which might otherwise be impractical
- Self-compacting or mixed as slurry – comes in easily transportable 50 lb. (22.68 kg) bags and 25 lb. (11.34 kg) bags , easily installed by one person
Permanent
- Will not dissolve or decay with time
- Requires no maintenance
- Maintains constant resistance for the life of the system
Environmentally Friendly
- Does not affect soil or ground water
- Meets all EPA requirements for landfill
- Material Safety Data Sheet (MSDS) available on request
- Restriction of Hazardous Substances (RoHS) compliant
- Motorola R56 compliant
Horizontal Installation (Trench)
| Estimated length of ground connector covered with each bag of TerraFill® TF50 |
||||
| Trench Width |
TerraFill® Thickness | |||
| 1” (2.5cm) | 2” (5.1cm) | 3” (7.6cm) | 4” (10.2cm) | |
| 4” (10.2cm) | 28’ (8.5m) | 14’ (4.2m) | 9’ (2,7m) | 7’ (2,1m) |
| 6” (15.2cm) | 18’ (5.4m) | 9’ (2.7m) | 6’ (1,8m) | 4’ (1,2m) |
| 8” (20.3cm) | 14’ (4.2m) | 7’ (2.1m) | 4’ (1,2m) | 3’ (0,9m) |
| 10”(25.4cm) | 11’ (3.3m) | 5’ (1.5m) | 3’ (0,9m) | 2’ (0,6m) |
| 12”(30.5cm) | 9’ (2.7m) | 4’ (1.2m) | 3’ (0,9m) | 2’ (0,6m) |
| Refer to installation instructions and local electrical codesfor proper trench size in your area | ||||
Vertical Installation (Hole)
| Estimated length of ground connector covered with each bag of TerraFill® TF50 |
||||||
| Hole Diameter | Depth of Hole | |||||
| 6’ (1.8m) | 8’ (2.4m) | 10’ (3m) | 12’ (3.6m) | 17’ (5.2m) | 20’ (6,1) | |
| 3” (7.5cm) | 1 | 1 | 1 | 2 | 2 | 2 |
| 4” (10.0cm) | 1 | 2 | 2 | 2 | 3 | 3 |
| 5’” (12.5cm) | 2 | 2 | 3 | 4 | 5 | 5 |
| 6” (15.0cm) | 2 | 3 | 4 | 4 | 7 | 8 |
| 7” (17.5cm) | 3 | 4 | 5 | 6 | 9 | 10 |
| 8” (20.0cm) | 4 | 6 | 7 | 8 | 11 | 13 |
| 9” (22.5cm) | 5 | 7 | 8 | 10 | 14 | 16 |
| 10” (25.0cm) | 6 | 8 | 9 | 12 | 17 | 20 |
| Refer to installation instructions and local electrical codesfor proper trench size in your area | ||||||
Data sheet Terrafill
| Technical Datasheet | Low Resistivity Grounding Backfill TerraFill | |
| (P/N) | TF-50 | TF-25 |
| Origin | ALLTEC – USA | |
| Apply | Lowering the earth resistance of grounding systems | |
| Packaging, Unit Weight | Reinforced Paper bags | |
| 50 Lbs (22.68Kg) / bag | 25 Lbs (11.34Kg) / bag | |
| Resistivity (Ω.cm) | < 2 Ω.cm | |
| Sulfur Content | < 2% | |
| Environmentally Friendly | Does not affect soil or ground water < 2 Ω.cm | |
| Permanent | Will not dissolve or decay with time | |
| Permanent | Maintains constant resistance for the life of the system | |
| Material Safety Data Sheet (MSDS) | available | |
| Maintenance | No | |
| Requires use with water | No | |
| Standard compliance | Motorola R56; EPA; RoHS | |
