Foundation Requirements - Huawei LUNA2000-2.0MWH-1H0 User Manual

LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual
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3.3 Foundation Requirements

Before installation, build a concrete platform and trenches on the selected ground.
The foundation construction requirements are as follows:
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Bury a ground screen and reserve a ground copper bar at the ground position of
the equipment. The ground copper bar should be a hot-dip zinc-coated flat steel
sheet with a cross-sectional area of 40 mm × 4 mm. One end of the copper bar
should be connected to the embedded ground screen, and the other end should
be connected to the ground point of the equipment. When burying a ground
screen, leave a sufficient slack for the ground bar to ensure its connection to the
equipment.
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Check Item
No.
1
2
Issue 02 (2021-11-15)
The preceding clearance requirements are for reference only in terms of
installation and O&M. The clearances must also comply with local fire control
requirements.
The dimensions of the foundation should meet the installation and bearing
requirements of the equipment.
The average foundation strength should exceed 100 kg/cm
The horizontal error between the foundation and the contact surface of the
equipment should be less than 5 mm.
The ground resistance for the equipment should be less than or equal to 0.1
ohm.
The ESS uses bottom cabling. Cables need to be pre-buried under the control
unit cabin.
The inner diameter of the protective tube should not be less than 1.5 times of
the outer diameter of the cable (including the protective layer).
The foundation should meet the local drainage requirements for the local
historical maximum rainfall. Drained water should be disposed of in
accordance with local laws and regulations.
Check Item
Cabling space
at the bottom
Cable
Copyright © Huawei Technologies Co., Ltd.
Acceptance Criteria
If there is no maintenance space at the bottom, it is
recommended that the cabling space at the bottom of
the container be no less than 1.2 m.
If there is maintenance space at the bottom, it is
recommended that the cabling space at the bottom of
the container be no less than 1.5 m.
The bending radius of the LV and MV cables is not less
than 15 times the cable diameter.
The voltage drop of the farthest loop does not exceed
5%.
The sensitivity, voltage level, and thermal stability of
the cables meet the local design specifications.
3 Site Requirements
2
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