An AC switchboard and a DC switchboard have some differences, including:
1. Voltage: The primary difference between an AC switchboard and a DC switchboard is the voltage. AC switchboards operate at high voltage of 480V and above, while DC switchboards operate at low voltage of 24V or 48V.
2. Current: Another significant difference between the two is the current they carry. While AC switchboards carry a high current, DC switchboards carry a low current.
3. Circuit Configuration: AC switchboards are usually configured in 3-phase circuits, while DC switchboards are typically configured in 1-phase or 2-phase circuits.
4. Circuit Protection: AC switchboards require circuit protection devices like circuit breakers, fuses, and relays, while DC switchboards require circuit protection devices like circuit breakers and fuses.
5. Equipment: The equipment used in both switchboards also differs. AC switchboards require transformers, motors, and generators, while DC switchboards require batteries, rectifiers, and inverters.
6. Maintenance: AC switchboards require more maintenance due to the high voltage and current levels, while DC switchboards require less maintenance due to the low voltage and current levels.