| 摘要 |
A loadcenter supplies power to a non-critical load, a critical load and an ultra-critical load, and is capable of isolating a first distribution panel distributing power to the non-critical load from a second distribution panel distributing power to the critical load to enable the isolated distribution panels to be supplied with power from separate generator power sources in response to power supplied by a utility power source to both distribution panels becoming unacceptable. A third distribution panel distributes power to the ultra-critical load and is selectively supplied with alternating current (AC) power from either the second distribution panel, when the second distribution panel has AC power, or from AC power generated from direct current (DC) power stored in a battery when the second distribution panel lacks AC power.
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