– output rated active power, in watts or kilowatts according to Annex L/RD;– output rated apparent power in volt-amperes or kilovoltamperes according toAnnex L/RD;– ambient operating temperature range (if other than 0 °C to 40 °C);NOTE 1 For example for indoor office ambient, the temperature range specified by the manufacturer may be10 °C to 35 °C.– rated short-time withstand current (Icw) or rated conditional short-circuit current (Icc) in accordance with 5.5.4.NOTE 2 Table 3 values may be exceeded and so marked.For units designed with additional separate automatic bypass/maintenance bypass, additionalinput a.c. supply, or external batteries, it shall be allowed for relevant supply ratings to bespecified in the accompanying installation instructions. Where this is done, the followinginstruction shall appear on or near the point of connection:SEE INSTALLATION INSTRUCTIONS BEFORECONNECTING TO THE SUPPLY4.7.3 Safety instructions4.7.3.1 GeneralThe manufacturer shall make safety instructions available as required to avoid introduction ofhazards when operating, installing, maintaining, transporting or storing the UPS.For example, special precaution for the protective earth conductor may be required wheninstalling a pluggable UPS comprising separate enclosures. The protective conductor shouldremain interconnected between enclosures also when the mains plug of the UPS isdisconnected. Such enclosures may house power electronics, battery strings, bypass switch,terminals and/or outlets.4.7.3.2 InstallationThe manufacturer shall provide guidance on the level of competence necessary forinstallation. Where appropriate, installation instructions should include reference to nationalwiring rules. Distinct instructions apply for:– UPS designed for location in a restricted access location onlyThe installation instructions shall clearly state that the UPS may only be installed inaccordance with the requirements of IEC 60364-4-42. Such UPS may not meet therequirements for a fire enclosure as specified in 1.2.6.2/RD.– UPS designed for permanent connection by fixed wiring to the a.c. supply or to the load orto a separate energy storage device, e.g. batteries that are not installed when delivered tothe user. The installation instructions shall clearly state that only a qualified professional(e.g. service person) may install the UPS and that, when the disconnect device forisolation of mains power is not incorporated in the equipment (see 3.4.2/RD), anappropriate and readily accessible disconnect device shall be incorporated in the fixedwiring.– Pluggable type A or pluggable type B UPS with energy storage device, e.g. a battery,already installed by the supplier. The installation instructions for UPS intended for userinstallation shall be made available to the user, e.g. in the user manual. When thedisconnect device for isolation of mains power is not incorporated in the equipment (see3.4.2/RD) or when the plug on the power supply cord is intended to serve as thedisconnect device, the installation instructions shall state that the mains socket outlet thatsupplies the UPS shall be installed near the UPS and shall be easily accessible. When theUPS power cord must be connected to an earthed mains socket outlet for safety reasons,the UPS marking or installation instructions shall so state. The same requirement formarking applies to any special equipotential earth bonding to other connected UPSequipment or to Class I loads.NOTE Pluggable power cords are normally 2 m in length or less.