The ZANDZ Technical Centre has received a request to calculate the grounding arrangement for a road tanker grounding point. Let's consider the solution offered by the technical center's specialists.
The activities have been performed according to:
-
GOST 12.4.124-83
Data provided for calculation:
Soil resistivity accepted for calculations is 100 Ohm*m.
Task:
It is necessary to calculate the grounding arrangement to protect from static voltage.
According to item 2.6.2 of GOST 12.4.124-84, the grounding arrangement resistance should be not more than 100 Ohm.
A set of measures ensuring compliance with the requirements to the grounding system is based on the following solutions:
-
a grounding arrangement is made using a 1.5 m copper-plated vertical grounding arrangement. Depth should be at least 0.5-0.7 meters;
-
it is connected to the grounding arrangement using clamp ZZ-005-064.
Calculation of a grounding arrangement resistance for 1 point:
Vertical electrode resistance:
Верт - Vert
Экв - Eq
Ом - Ohm
where ρ – is equivalent soil resistivity, 100 Ohm·m;
L is vertical electrode length, 1.5 m;
d is vertical electrode diameter, 0.014 m;
T is deepening;
, where t is the distance from the ground surface to the grounding arrangement, 0.5 m;
rated resistance of the grounding arrangement is 60,23 Ohm, which is less than the required value of 100 Ohm.
Table 1. List of required materials.
| № | Part number | Name | Quantity, pcs. |
| 1. | ZZ-001-065 | ZANDZ Copper-plated threaded grounding rod (D14; 1,5 m) | 1 |
| 2. | ZZ-002-061 | ZANDZ Threaded coupling | 1 |
| 3. | ZZ-003-061 | ZANDZ Termination | 1 |
| 4. | ZZ-004-060 | ZANDZ Guide head for jackhammer attachment | 1 |
| 5. | ZZ-005-064 | ZANDZ Conductor connection terminal (up to 40 mm) | 1 |
| 6. | ZZ-007-030 | ZANDZ Waterproofing tape | 1 |
| 7. | ZZ-008-000 | ZANDZ Attachment to the hammer (SDS max) | 1 |
Do you have any questions about grounding of a road tanker or other facilities? Please contact the ZANDZ Technical Center!
Related Articles:
