BATTERY-POWERED BACKUP POWER SYSTEM FOR A SUMP PUMP INSTALLATION

摘要

An automated battery-powered backup AC power supply system for a sump pump installation of the type having a sump pump and a pump controller which connects the sump pump motor to the AC line to operate in response to a rising liquid level in the sump container. The system includes a standby battery and an inverter operable from the battery for supplying AC power to the sump pump installation in the event of AC power failure or during periodic testing of the sump pump installation. A power controller senses whether the sump pump motor is connected to the AC line by the pump controller and connects the AC inverter to the backup battery to supply AC power to the installation only when the pump is connected, thereby minimizing idle current drain on the battery and prolonging the backup availability of the system.

主权项

1. A backup AC power supply system for a sump pump installation of the type operable from an AC line and having a liquid container, a sump pump for discharging liquid from the container, and a pump controller which temporarily conditions the sump pump to operate in response to a rising liquid level in the container, comprising:
a standby battery; an inverter operable from the standby battery for supplying AC power to the pump installation; and a power controller conditioning the inverter operative to supply AC power to the sump pump installation only while the pump controller conditions the sump pump to operate.