______ stations banks are configured with either one or two 4.8kV (low side) circuit breakers (CBs).

______ stations banks are configured with either one or two 4.8kV (low side) circuit breakers (CBs).

• A. Distribution
• B. Transmission
• C. Substation
• D. Generation

Answer: (A)

Distribution stations protect and distribute power at a lower voltage, so the low-side equipment is kept simple and focused on switching the transformer to the distribution feeders. Having one low-voltage breaker works when there’s a single feeder from the transformer, giving a straightforward and economical protection scheme. Adding a second breaker allows a second feeder or provides a dedicated path for maintenance isolation, so one feeder can be worked on while another remains energized. This simple, two-breaker approach matches the needs of distributing power to customers at 4.8 kV, balancing reliability and cost. Transmission stations, by contrast, operate at higher voltages with more complex bus and protection schemes, so the described configuration is characteristic of distribution-level substations.

Distribution stations protect and distribute power at a lower voltage, so the low-side equipment is kept simple and focused on switching the transformer to the distribution feeders. Having one low-voltage breaker works when there’s a single feeder from the transformer, giving a straightforward and economical protection scheme. Adding a second breaker allows a second feeder or provides a dedicated path for maintenance isolation, so one feeder can be worked on while another remains energized. This simple, two-breaker approach matches the needs of distributing power to customers at 4.8 kV, balancing reliability and cost. Transmission stations, by contrast, operate at higher voltages with more complex bus and protection schemes, so the described configuration is characteristic of distribution-level substations.