“Draw a single-line diagram for a 480Y/277 V office campus with a 1.2 MW load and a 500 kW, 1 MWh LFP battery connected through a bidirectional PCS and 800 A feeder breaker for peak shaving.”
Read the decisions behind it.
The demand meter is upstream of the main switchboard so imported demand is visible.
A 500 kW PCS connects through an 800 A feeder breaker.
The battery enclosure is rated 1.0 MWh at 1000 Vdc.
The e-stop and fire interlock is shown as a dedicated safety input to the PCS.
This is suitable for behind-the-meter demand management where export is not the main objective. Site fault duty, fire code, and utility control requirements must be checked.
Other examples in this family.
Common questions
What is peak shaving?
The battery discharges during high demand intervals to reduce power imported from the utility.
Why use LFP cells?
Lithium iron phosphate is commonly selected for stationary storage because of its thermal and cycle-life characteristics.
Can this system export power?
It can if approved and configured for export, but this drawing focuses on behind-the-meter load reduction.