Eaton AMPGARD Installation, Operation And Maintenance Instructions

Contents

3Instruction Booklet IB48050Effective September 2012Instructions for installationoperation and maintenance of theAMPGARD 15 kV 300A vacuum startereaton Corporation www.eaton.comRatingsTable 1. Starter RatingsDescriptionUtilization Voltage rating10,000 to 11,000V 12,400 to 13,800VInterrupting rating E1 (unfused) 5 kA 5 kAE2 (fused) 950 MVA at 11,000V 1190 MVA at 13,800VE2 (fused) 63 kA 63 kAContinuous current 300A 300AInduction motor 6000 hp 7500 hpSynchronous motor (0.8 PF) 6000 hp 7500 hpSynchronous motor (1.0 PF) 6750 hp 8500 hpTransformer 5400 kVA at 11 kV 6800 kVA at 13.8 kVBIL 75 kV 95 kV (with arrestors)Table 2. SL Contactor RatingsDescription ratingMaximum voltage 15,000VMaximum interrupting current(three operations) 5000ARated current 300A enclosed/300A openIEC make-break capabilityAC3—MakeAC3—Break 3200A2560AShort time current30 seconds1 second8.75 milliseconds1920A4800A25 kA peakMechanical life 1 million operationsElectrical life 100,000 operationsDielectric strength (60 Hz) 36 kV (1 minute)Closing time 80 millisecondsOpening time 130 to 330 milliseconds (selectable)Weight 95 lbs (43 kg)Arcing time 12 milliseconds (3/4 cycle) or lessPickup voltage 80% rated coil voltageDescription ratingDropout voltage 60% rated coil voltageControl voltagesACDC 110/120/220/240V (50/60 Hz)125VControl circuit burden (rated volt)ClosingHolding 2600 VA80 VAAuxiliary contact ratingsVoltage (maximum)Continuous currentMaking capacity (AC)Making capacity (DC)Breaking capacity (AC)Breaking capacity (DC)600V10A7200 VA200 VA720 VA200 VALatch (when specified)Mechanical lifeTrip voltages (DC)Trip voltages (AC)Tripping voltageTripping burden24 Vdc48 and 96 Vdc110 and 220 Vac250,000 operations24/48/96V110/220V (50/60 Hz)80% rated coil voltage1200 VA400 VA500 VARatings are based on full voltage starting of standard motorswith locked rotor current equal to 6-times full load current andan acceleration time of 10 seconds The starter may be suppliedwith a definite purpose rating of up to 300A depending on thetype of starting (reduced voltage autotransformer for example),locked rotor current, and acceleration time Consult the factoryfor more informationStarters are supplied with bolt-in main fuses Contactors havestab-in connections to the starter cellThe flow of current through a starter with bolted fuses and astab-in contactor can be described as follows: The line fingerassembly mounted at the back of the enclosure serves to connectthe isolation switch moving stabs to the controller line terminalswhen the switch is closed Power flows from the switch movingstabs through two flexible shunts to the upper fuse mountingsThe fuses are connected to the lower fuse mountings that containthe line-side stab connections to the line finger assemblies for themain contactor With the main contactor energized, power flowsthrough the contactor’s vacuum interrupters to the contactor loadfingers, which are engaged on to the controller load-side stabsMedium voltage cables connect the load-side stabs to the motorload connections The contactor is held in place by a set of railsmounted in the lower part of the cell For full-voltage starters, themotor load connections are mounted to the left of the main fusesin the rear of the compartment, facing forward For reduced voltagestarters, the motor load connections are mounted in the left rearof the reduced voltage structure Current transformers are typicallymounted just below the motor load connections