APC Back-UPS Pro 280, 420, 650 UPS User’s Manual

The APC Back-UPS Pro 280, 420, and 650 are uninterruptible power supplies that provide battery backup and surge protection for your sensitive electronic equipment. They feature automatic voltage regulation (AVR) to protect against power sags and surges, and battery backup to keep your equipment running during power outages. The UPS also includes PowerChute Plus power management software that allows you to control and monitor your UPS from your computer.

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APC Back-UPS Pro 280/420/650 User's Manual | Manualzz

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Key features

  • Battery Backup
  • Surge Protection
  • Automatic Voltage Regulation (AVR)
  • PowerChute Plus Software
  • Self-Test
  • Cold Start
  • Hot-Swappable Battery
  • Telephone/Network Surge Suppression
  • Block Safe Outlets

Frequently asked questions

The Battery Backup Outlets provide battery power and surge protection to equipment during utility outages, while the Surge Protected Outlets only provide surge protection.

The typical battery life is 3 to 6 years, depending on the number of discharge cycles and the ambient temperature. The typical recharge time is 2 to 5 hours from total discharge.

When the load exceeds the UPS's capacity, the overload LED illuminates and the UPS emits a sustained tone. The alarm remains "On" until the overload is removed. Disconnect nonessential load equipment from the battery backup outlets to eliminate the overload.

If the battery fails a self-test, the UPS emits short beeps for one minute and the replace battery LED illuminates. The UPS repeats the alarm every five hours. Perform the self-test procedure to confirm replace battery conditions. The alarm stops when the battery passes the self-test.
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