Siemens 38-3AH3 38 kV Instruction Manual

Contents

Caution (without safety alert symbol) -Indicates a potentially hazardous situationwhich, if not avoided, may result inproperty damage.Hazardous ProceduresIn addition to other procedures describedin this instruction manual as dangerous,user personnel must adhere to thefollowing:1. Always work only on a de-energizedcircuit breaker. The circuit breakershould be isolated, grounded andhave all control power removedbefore performing any tests,maintenance or repair.2. Always perform maintenance on thecircuit breaker after the spring-charged mechanisms are discharged(except for test of the chargingmechanisms). Check to be certainthat the indicator flags read OPEN andDISCHARGED.3. Always let an interlock device orsafety mechanism perform itsfunction without forcing or defeatingthe device.IntroductionIntroductionThe 38-3AH3 family of vacuum circuitbreakers is designed to meet all applicableANSI, NEMA and IEEE standards. Successfulapplication and operation of thisequipment depends as much upon properinstallation and maintenance by the useras it does upon the proper design andfabrication by Siemens.The purpose of this instruction manual isto assist the user in developing safe andefficient procedures for the installation,maintenance and use of the equipment.Contact the nearest Siemensrepresentative if any additionalinformation is desired.Signal wordsThe signal words "danger," "warning" and"caution" used in this instruction manualindicate the degree of hazard that may beencountered by the user. These words aredefined as:Danger - Indicates an imminentlyhazardous situation which, if not avoided,will result in death or serious injury.Warning - Indicates a potentiallyhazardous situation which, if not avoided,could result in death or serious injury.Caution - Indicates a potentially hazardoussituation which, if not avoided, may resultin minor or moderate injury.Hazardous voltage and high-speed moving parts.Will cause death, serious injury and property damage.Always de-energize and ground the equipment beforemaintenance. Maintenance should be performed only byqualified personnel. The use of unauthorized parts in the repairof the equipment or by tampering by unqualified personnel willresult in dangerous conditions that will cause death, severeinjury or equipment damage. Follow all safety instructionscontained herein.4