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| Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
| You are viewing a USPC Schedule. |
| Class 307 | ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS |
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![]() | ![]() | 1 | SUPERIMPOSED UNLIKE CURRENTS |
![]() | ![]() | 9.1 | VEHICLE MOUNTED SYSTEMS |
![]() | ![]() | 11 | PLURAL LOAD CIRCUIT SYSTEMS |
![]() | ![]() | 12 | Common conductor or return type |
![]() | ![]() | 17 | Transformer connections |
![]() | ![]() | 18 | Plural sources of supply |
![]() | ![]() | 19 | Interconnected for energy transfer |
![]() | ![]() | 23 | Substitute or alternate source |
![]() | ![]() | 24 | With control of magnitude of current or power |
![]() | ![]() | 25 | Diverse sources |
![]() | ![]() | 29 | Selectively connected loads and/or sources |
![]() | ![]() | 30 | Anticoupling of load circuits through same source |
![]() | ![]() | 31 | Control of current or power |
![]() | ![]() | 36 | Serially connected load circuits |
![]() | ![]() | 38 | Selectively connected or controlled load circuits |
![]() | ![]() | 42 | Circuit arrangements or layouts |
![]() | ![]() | 43 | PLURAL SUPPLY CIRCUITS OR SOURCES |
![]() | ![]() | 44 | One source floats across or compensates for other source |
![]() | ![]() | 45 | With intervening converter |
![]() | ![]() | 47 | Dynamoelectric-type source |
![]() | ![]() | 48 | Storage battery or accumulator-type source |
![]() | ![]() | 51 | Circulating- or inter-current control or prevention |
![]() | ![]() | 52 | Load current control |
![]() | ![]() | 53 | Load current division |
![]() | ![]() | 60 | Constant load or current |
![]() | ![]() | 62 | Load-limiting |
![]() | ![]() | 63 | Serially connected sources |
![]() | ![]() | 64 | Substitute or emergency source |
![]() | ![]() | 69 | Sources distributed along load circuit |
![]() | ![]() | 70 | Load transfer without paralleling sources |
![]() | ![]() | 71 | Series-parallel connection of sources |
![]() | ![]() | 72 | Diverse or unlike electrical characteristics |
![]() | ![]() | 77 | Series-connected sources |
![]() | ![]() | 80 | Selective or optional sources |
![]() | ![]() | 82 | Plural converters |
![]() | ![]() | 83 | Plural transformers |
![]() | ![]() | 84 | Plural generators |
![]() | ![]() | 85 | Connecting or disconnecting |
![]() | ![]() | 400 | ELECTRETS |
![]() | ![]() | 401 | NONLINEAR REACTOR SYSTEMS (E.G., SATURABLE) |
![]() | ![]() | 402 | Parametrons |
![]() | ![]() | 406 | Magnetic flip-flops |
![]() | ![]() | 407 | Logic circuits |
![]() | ![]() | 408 | Multiaperture |
![]() | ![]() | 409 | Clocking, delay or transmission line |
![]() | ![]() | 410 | Nor, Not logic circuit |
![]() | ![]() | 411 | Exclusive Or, And logic circuit |
![]() | ![]() | 412 | Driver circuits |
![]() | ![]() | 413 | Signal sensor (e.g., current or frequency) |
![]() | ![]() | 414 | Magnetic trigger devices |
![]() | ![]() | 415 | Magnetic switching circuits |
![]() | ![]() | 416 | Amplifiers using nonlinear reactors (i.e., magnetic amplifiers) |
![]() | ![]() | 419 | Magnetic pulse generator |
![]() | ![]() | 422 | Multiaperture |
![]() | ![]() | 424 | Parametric frequency converter |
![]() | ![]() | 326 | PERSONNEL SAFETY OR LIMIT CONTROL FEATURES |