حاسبة نظام التأريض | BS-7430:2011+A1:2015 |

Earthing System Calculator - BS-7430

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ARAM

Earthing System Calculator

According to BS-7430:2011+A1:2015

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Manage Prices and View Data

Price Management 💰

Copper Cladded Earthing Rod

TypeREF NO.Price (EGP)
Diameter=3/4, Length 1.5mDARR-3415
Diameter=3/4, Length 1.2mDARR-3412
Diameter=5/8, Length 1.5mDARR-5815
Diameter=5/8, Length 1.2mDARR-5812

Coupling Dowel

TypeREF NO.Price (EGP)
Diameter 3/4DAR-CD34
Diameter 5/8DAR-CD58

Inspection Pit

TypeREF NO.Price (EGP)
Inspection PitAR-3030

U-Clamp

TypeREF NO.Price (EGP)
U-ClampDAR-UC34

Earth Bar

TypeREF NO.Price (EGP)
30cm x 5cm x 5mm with disconnecting linkAR-3055

Enhancement Material

TypeREF NO.Price per unit (EGP)
Enhancement Material (per 1.5m coverage)ATM-11

Bare Copper Cable (per meter)

C.S.A (mm²)REF NO.Price per meter (EGP)
6SWB-6
10SWB-10
16SWB-16
25SWB-25
35SWB-35
50SWB-50
70SWB-70
95SWB-95
120SWB-120
150SWB-150
185SWB-185
240SWB-240
300SWB-300
400SWB-400

Installation Price Management 🔧

Pit Installation Price

DescriptionPrice per Pit (EGP)
Pit Installation Cost

Cable Installation Price (per meter by CSA)

C.S.A (mm²)Installation Price per meter (EGP)
6
10
16
25
35
50
70
95
120
150
185
240
300
400

Transportation

DescriptionPrice (EGP)
Transportation Cost

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Equipment Configuration

Adjustable

Soil Resistivity Test (Wenner Method)

Wenner Method Formula:
(BS-7430:2011+A1:2015 - Clause 9.4)
(Reduces ρ to 60%)

Proposed System Description

Multi Rod Resistance Formula:
(BS-7430:2011+A1:2015 - Clause 9.5.4)
(BS-7430:2011+A1:2015 - Clause 9.5.4)
Cable Resistance Formula:
(BS-7430:2011+A1:2015 - Clause 9.5.5)
Typical: 0.6 or 0.8 m

Earth Bar (Optional)

📊 Calculation Results

🔬 Soil Resistivity Test Results

Applied Formula:
(BS-7430:2011+A1:2015 - Clause 9.4)
0.00 Ω.m

🔧 Multi Rod Resistance - Rn

Applied Formula:
(BS-7430:2011+A1:2015 - Clause 9.5.4)
(BS-7430:2011+A1:2015 - Clause 9.5.4)
4
2
1.5 m
3.00 m
17.2 mm
3.60 m
80.03 Ω.m
1.9271
0.4777 Ω
Calculation: Total Rod Length = Rods per Pit × Single Rod Length = 2 × 1.50 = 3.00 m

📏 Cable Resistance - RcL

Applied Formula:
(BS-7430:2011+A1:2015 - Clause 9.5.5)
Where: k = 1.83 (for round conductors)
12.00 m
70 mm²
9.5 mm
0.60 m
11.394742 Ω

🔗 Grid Resistance - Rg

Applied Formula:
(Parallel Combination)
Note: Grid resistance is the parallel combination of Rn and RcT
0.4777 Ω
11.284742 Ω
0.217980 Ω

📊 Total Earthing Resistance

Final Calculation:
(BS-7430:2011+A1:2015)
0.217980 Ω
Calculation Summary:
• Multi Rod Resistance: Rn = 0.4777 Ω
• Cable Resistance: RcL = 11.284742 Ω
• Grid Resistance: Rg = 0.217980 Ω
• Total Resistance: Rt = Rg = 0.217980 Ω

💰 System Cost Breakdown

Item No. Description REF NO. Manuf.

Total Estimated Cost (Supply Only)

0.00 EGP
📋 Important Notes:
  • System prices excluding PVC cables
  • System prices excluding VAT
  • For Lightning protection systems, the prices include the price of one earthing system excluding air termination network