Murphy MGC921 User's Manual
Contents
1. toggle switch and start push button e 518APH TATTLETALE annunciator e Auxiliary starter relay Contact rating 12 volt 40 amp 24 volt 16 amp e Oil Pressure SWICHGAGE 2 in 51 mm dial 0 100 psi 0 689 kPa 6 89 bar e Temperature SWICHGAGE 2 in 51 mm dial 130 250 F 54 121 C 12 ft 3 7 m capillary e Two 2 2 1 16 in 52 mm diameter holes plugged m AC meters e AC voltmeter 3 1 2 in 89 mm dial 2 full scale specify range 300 V or 600 V e AC ammeter 3 1 2 in 89 mm dial 2 full scale specify range 50 to 4000 A e AC frequency meter 120 V 3 1 2 in 89 mm dial 0 6 Hz 45 65 Hz e Frequency meter rheostat Options m AC ammeter voltmeter phase selector switch Requires 2 additional CTs m Hourmeter 2 in 51 mm dial 5 digit m Battery voltmeter 2 in 51 mm dial range determined by battery voltage m Battery ammeter 2 in 51 mm 60 0 60 Standard included with 3 phase models Compact m Full Featured MGC 95093B Revised 03 00 Catalog Section 75 00 02 0134 MGC921 Series m Available in Manual or Auto Start 12 or 24 VDC Battery Voltage Single Phase or 3 Phase Specifications m Auto Start Panel e Power Requirements 12 VDC battery for 12 V models 24 VDC battery for 24 V models e Inputs Ground or positive inputs for high temperature or low pressure sensors e Outputs Auxiliary starter relay Contact rating 12 vo2. Auto M Manual AC Ammeter 50 AM50 00004430 800 AM800 00004436 12 12 VDC 100 AM100 00004432 1200 AM1200 00004438 24 24 VDC 150 AM150 00004433 1500 AM1500 00004439 200 AM200 00004434 1600 AM1600 00004440 300 AM300 00004267 2000 AM2000 00004441 AC Voltmeter 400 AM400 00004304 2500 AM2500 00004442 300 VM300 00007173 500 AM500 00007174 3000 AM3000 00004443 600 VM600 00007180 600 AM600 00004435 4000 AM4000 00004444 Warranty A two year limited warranty on materials and workmanship is given with this Murphy product Details are available on request and are packed with each unit In order to consistently bring you the highest quality full featured products we reserve the right to change our specifications and designs at any time FRANK W MURPHY MANUFACTURER P O Box 470248 Tulsa Oklahoma 74147 USA tel 918 627 3550 fax 918 664 6146 e mail sales fwmurphy com http www fwmurphy com r Ll ji 4 lii Since ur phy d USA ISO 9001 FM 28221 UK ISO 9002 FM 29422 Printed in U S A FRANK W MURPHY MFR CONTROL SYSTEMS amp SERVICES DIVISION P O Box 1819 Rosenberg Texas 77471 USA tel 281 342 0297 fax 281 341 6006 e mail sales fwmurphy com FRANK W MURPHY LTD Church Rd Laverstock Salisbury SP1 1QZ U K tel 44 1722 410055 fax 44 1722 410088 e mail sales fwmurphy co uk http www fwmurphy co uk FRANK W MURPHY FRANCE
3. f Sitti phy MFR Generator Panel Description The MGC921 provides economical engine and generator control for applications not requiring NFPA 99 or NFPA 110 approval Models are available for Manual or Automatic start designed for 3 phase 4 wire or 1 phase 3 wire genera tors Models MGC921 feature mechanical SWICHGAGE s for engine oil and coolant tem perature Models MGC921E feature EGS elec tric SWICHGAGE s The panels are housed in a 13 x 10 x 11 in 330 x 254 x 279 mm shock mounted NEMA 1 drip proof enclosure Current transformers CT s are not included Features m Auto Start Panel includes the following features e ASM150 auto start controller with Optically isolated noise resistant inputs Outputs for fault annunciator Crank rest cycle timer 4 to 25 sec adjustable Shutdown time delay 1 to 25 seconds adjustable locks out low oil pressure and high temperature on start up Crank disconnect and overspeed sensing operates from a magnetic pickup signal requires 2 Vrms minimum Auxiliary starter relay Contact rating 12 volt 40 amp 24 volt 16 amp Oil pressure SWICHGAGE 2 1 16 in 52 mm dial 0 100 psi 0 689 kPa 6 89 bar Temperature SWICHGAGE 2 1 16 in 52 mm dial 130 250 F 54 121 C 12 ft 3 7 m capillary e TEST OFF AUTO selector switch e Two 2 1 16 in 52 mm dia holes plugged m Manual Start Panel includes the following features e Power OFF ON
4. lt 40 amp 24 volt 16 amp 300 mA transistors for fault annunciation e Operating Temperature 4 to 140 F 20 to 60 C e Cycle Crank Timer Up to 8 attempts Recrank on false starts fixed 30 seconds e Crank Rest Cycle Timing 4 to 25 seconds adjustable e Shutdown Time Delay 1 to 25 seconds adjustable Locks out low oil pressure and high temperature on start up e Crank Disconnect Speed Setting From 30 to 8500 Hz e Overspeed Trip Point Setting From 30 to 8500 Hz e Magnetic Pickup Input Requires 2 Vrms minimum m Manual Start Panel e Power Requirements 12 VDC battery for 12 V models 24 VDC battery for 24 V models e Operating Temperature 4 to 140 F 20 to 60 C Dimensions NOTE Dimensions below apply to all MGC921 Series enclosures 11 in 279 mm 13 in 330 mm LOW PRESSURE HIGH TEMPERATURE OVERCRANK OVERSPEED ENGINE RUNNING 10i 254 Front View Side View How to Order Phase MGC921 1 1 phase Options DCAM60 DC Ammeter 00000002 MGC921E 3 3 phase MGC921 1 1 phase MGC921E 3 3 phase DCVM DC Voltmeter 12 volt 00000545 DC Voltmeter 24 volt 00000859 HM DC Hourmeter 00004594 PSS Phase Selector Switch 00004015 Starting Type Optional on single phase model only A
5. tel 33 1 30 762626 fax 33 1 30 763989 MURPHY DE MEXICO S A DE C V Blvd Antonio Rocha Cordero 300 Fracci n del Aguaje San Luis Potosi S L P M xico 78384 tel 52 48 206264 fax 52 48 206336 e mail ventas murphymex com mx FRANK W MURPHY PTE LTD No 2 Tuas South Street 2 Sprintecs Bldg 02 01 02 Singapore 638042 tel 65 863 1398 fax 65 863 0208 e mail fwmsales fwmurphy com sg MURPHY SWITCH OF CALIFORNIA 41343 12th Street West Palmdale California 93551 1442 USA tel 661 272 4700 fax 661 947 7570 e mail sales murphyswitch com http www murphyswitch com MACQUARRIE CORPORATION 1620 Hume Highway Campbellfield Vic 3061 Australia tel 61 3 9358 5555 fax 61 3 9358 5558 e mail murphy macquarrie com au
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