How to deal with the grounding of DC battery cabinet

Should substation DC battery rack metals be bonding/grounding to the substation ground grid?

One: Substation DC battery rack metals should be better without bonding/grounding to the substation ground grid, because during the fault the substation area elevate on potentials so the grounding may affect the battery functionality.

Does a cabinet need to be grounded?

If the cabinet frame is painted, the paint must be removed from the fixing point. Hinged installation plates or doors, if there are electrical devices on them, must be grounded and PE connected. All hinged installation plates and doors have to be grounded by a separate cable. The hinge does not provide reliable grounding.

Should the negative terminal of the battery be bonded to the rack?

Secondly, if the negative terminal of the battery is bonded to the rack, the rack should be separately earthed and not through the sub station ground grid. Ur fear of ONE, will occur if done other wise. Dickson. There is peace in silence and achievement in plans.

Do I need a grounding cable if my cabinet is painted?

If the cabinet is painted, all components and installation plates should be grounded via a cable to the grounding busbar. Body grounding does not replace a protective earth connection. PE conductors are always required from the PE terminal of the device to the PE busbar if there is body grounding or not.

How to ground a control cable screen?

Run wires along the metal surface. The cable screen grounding must be as close to the control connections as possible. It is also beneficial to ground the control cable screen to the cabinet frame in the inlet. Here you can see the proper way to ground the control cables as was instructed in the previous slide.

Does body grounding replace a protective earth connection?

Body grounding does not replace a protective earth connection. PE conductors are always required from the PE terminal of the device to the PE busbar if there is body grounding or not. The cross section of the grounding busbar or cable has to be at least half of the cross sectional area of the supply cable.