Hardware Installation Guide
Page 86
... constant level and therefore can provide power to the system for a limited amount of time when AC power is lost . Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide B-8 OL-17739-01 The battery is charged by the AC power while it is available, so...intended to provide continued operation. Surge protectors should be Underwriters Laboratories (UL) safety-approved. However, these devices cannot protect against variations in price from 15 minutes to an hour or so-depending on the UPS system. Using Power Protection Devices Appendix B Maintaining the Wide Area ...
... constant level and therefore can provide power to the system for a limited amount of time when AC power is lost . Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide B-8 OL-17739-01 The battery is charged by the AC power while it is available, so...intended to provide continued operation. Surge protectors should be Underwriters Laboratories (UL) safety-approved. However, these devices cannot protect against variations in price from 15 minutes to an hour or so-depending on the UPS system. Using Power Protection Devices Appendix B Maintaining the Wide Area ...