MiCOM P921/P922/P923 - Schneider - error

Pxxx/EN SS/G11Page 4/8Safety Section3. SYMBOLS AND EXTERNAL LABELS ON THE EQUIPMENTFor safety reasons the following symbols and external labels, which may be used on theequipment or referred to in the equipment documentation, should be understood before theequipment is installed or commissioned.3.1 SymbolsCaution: refer to equipment documentationCaution: risk of electric shockProtective Conductor (*Earth) terminalFunctional/Protective Conductor (*Earth)terminal.Note: This symbol may also be used for aProtective Conductor (Earth) Terminal if thatterminal is part of a terminal block or subassemblye.g. power supply.*NOTE:THE TERM EARTH USED THROUGHOUT THIS GUIDE IS THEDIRECT EQUIVALENT OF THE NORTH AMERICAN TERMGROUND.3.2 LabelsSee Safety Guide (SFTY/4L M/G11) for equipment labelling information.4. INSTALLING, COMMISSIONING AND SERVICINGEquipment connectionsPersonnel undertaking installation, commissioning or servicing work for thisequipment should be aware of the correct working procedures to ensure safety.The equipment documentation should be consulted before installing,commissioning, or servicing the equipment.Terminals exposed during installation, commissioning and maintenance maypresent a hazardous voltage unless the equipment is electrically isolated.The clamping screws of all terminal block connectors, for field wiring, using M4screws shall be tightened to a nominal torque of 1.3 Nm.Equipment intended for rack or panel mounting is for use on a flat surface of aType 1 enclosure, as defined by Underwriters Laboratories (UL).Any disassembly of the equipment may expose parts at hazardous voltage, alsoelectronic parts may be damaged if suitable electrostatic voltage discharge (ESD)precautions are not taken.If there is unlocked access to the rear of the equipment, care should be taken byall personnel to avoid electric shock or energy hazards.Voltage and current connections shall be made using insulated crimp terminationsto ensure that terminal block insulation requirements are maintained for safety.Watchdog (self-monitoring) contacts are provided in numerical relays to indicatethe health of the device. AREVA T&D strongly recommends that these contactsare hardwired into the substation's automation system, for alarm purposes.