SEAL-U-CUP 2332611 - Caterpillar

Identification
SRCV GENERATOR
1. Regulator housing. 2. Bolt. 3. Exciter. 4. Bolts.All Self Regulated Constant Voltage (SRCV) generators have an external belt driven exciter (3). It is located on the top of regulator housing (1).The generator serial number, on the nameplate, tells four things about the generator:1. The first group of number is the kW rating on 60 cycle generators. On 50 cycle generators it is usually one less than the kW rating.2. The letter R is the symbol for Self Regulated Constant Voltage generator.3. The next letter indicates the voltage rating of the generator. See Chart. Both voltages of a (120/208) 4 wire single voltage generator can be used at the same time. On the (120-240, 200 -400 or 240-480) 10 wire dual voltage generators, the leads can be connected to get one or the other of the voltages, but not both at the same time. Rated voltage on dual voltage generators is for a line to line connection. A line to neutral connection will give 58% of the rated voltage. See the topic, REGULATOR CONNECTIONS in DISASSEMBLY AND ASSEMBLY for additional information on generator voltages.4. The last group of numbers is the actual serial number of the generator in its kW and voltage rating. Serial numbers from 1 to 599 have regulators equipped with a DC Controlled Reactor. Serial numbers 600 and up have regulators equipped with a Compensating Current Transformer.The chart that follows gives the basic characteristics of each SRCV generator. If a generator is connected to give performance different from that shown on the nameplate, a new nameplate should be installed on the generator. Mark the new nameplate to show the present method of connection and rated capacities. 1 60 cycle generator reworked into 50 cycle; exciter pulleys changed.2 Radio suppressed-Bu-Docks "Deep Freeze" contract.3 Same as 2L333 except hinged exciter.4 Also used as single phase generator on D315 engine at 40 kW.5 Also used as single phase generator on D315 & D315G engines at 40 kW.6 100 kW derated to 75 kW, Radio Suppressed; Marine Corp. Contract.7 120 Volt, 4 wire only; not reconnectable to other voltage.8 Radio Suppressed.9 Rewound by Hendricks Electric; also 600 series voltage regulator installed.10 Two Bearing, clockwise rotation; rock crusher generator.11 B100RN804 & 805 regrouped by Henricks Electric into 600 Volt.12 Made from 4L1451 by regrouping stator into 6/3 parallel star.13 Generator reworked by Century to physically fit D353 Engine.14 Generator rewound by Foremost Electric.15 Made from 3L5484 by adding stator from 4L1126 Generator and regrouping stator.16 3L5484 Generator reworked into 120/208 volt by C.T.Co.17 Single phase generators.Operation Of Generators With DC Controlled Reactor Type Regulators (Serial Numbers 1-599)
WIRING DIAGRAM (TYPICAL EXAMPLE) A. Saturable reactor.B. Voltage droop resistor (if so equipped).C. DC controlled reactor.D. Voltage droop rheostat.E. Full wave rectifier.F. Voltage level resistor (if so equipped).G. Blocking rectifier.H. Voltage level rheostat.I. Generator field.J. Exciter armature.K. Exciter field.L. Exciter control field.M. Generator armature.Generator field (I) is connected to the engine flywheel through the generator shaft and coupling. Exciter armature (J)