Important Safety Instructions
The following contains important instructions that should be followed during the installation, operation, and maintenance of
the 4400 Series UPS.
Misuse of this equipment could result in personal injury and/or equipment damage.
In no event will Toshiba Corporation be responsible or liable for either indirect or
consequential damage or injury that may come from the use of this equipment.
The UPS system output is NOT equipped with an over-current protection device, or an output disconnect at the
AC output. The user should provide circuit breakers between the UPS AC input (or Bypass input) and the power sources
and between the UPS output and the critical load input. The minimum device ratings are listed in "9.5 External Breakers"
on page 53
The maximum operating ambient temperature for the UPS is 104 °F (40 °C) at 0.9 PF.
If the UPS is exposed to the same ambient temperature as the DC backup supply, the maximum operating ambient
Battery backup: 90 °F (32 °C) at 0.9 PF. Table 3.1 lists the nominal battery voltage.
TABLE 3.1: UPS NOMINAL BATTERY VOLTAGE
4400 Series Installation and Operation Manual – 64527-008