This application was for a 2000W 8hour UPS solution for a client who needed to provide essential backup for telecommunication, internet, security and access control in a private residential application. This is a longer than usual runtime for a pluggable UPS and most competitive solutions will opt for a high capacity UPS that typically has a high voltage battery string and requires a high capacity power feed. The Power Inspired VFI3000RT+, is a 3KVA / 2.7KW pluggable solution that has an adjustable charging current. This allows the unit to be connected via the rear battery extension port to either additional battery cabs or, in this case a large capacity battery. The solution comprises our A20 cabinet, fitted with quantity 18, 100Ah, 12V blocks in three strings. Each string protected with a DC breaker. This configuration provides closer to 9 hours runtime in fact.
The UPS was rackmounted in the bottom of the data cabinet and extra power resilience was achieved by the use of the combined bypass switch and PDU. No hardwiring of the UPS was necessary, as the unit is powered directly from a 16A Commando outlet.