Equipment (electrical engineering)
Electrical equipment is understood to be an electrical component , an assembly or a device in an electrical system. The literal definition is:
"Electrical equipment in the sense of this accident prevention regulation is all objects that, as a whole or in individual parts, are used for the use of electrical energy (e.g. objects for generating, forwarding, distributing, storing, measuring, converting and consuming) or transmitting, distributing and processing of information (e.g. telecommunications and information technology objects). Electrical equipment is equated with protective equipment and auxiliary equipment, insofar as these are subject to electrical safety requirements. "
In industrial systems, electrical equipment is usually referred to with so-called equipment labels (BMK). These are attached to the equipment and entered in the circuit diagram at the respective symbol.
Systematics
The equipment identifier is preceded by a '-' as a sign, and it can be expanded to include plant (=) and location identifiers (+). Possibly. the location designation can also be differentiated into installation location (++) and installation location (+). This is particularly helpful for larger systems in order to maintain an overview. The following equipment labels are common:
| symbol | meaning |
|---|---|
| = | investment |
| + | place |
| - | Resources |
| . | function |
| : | connection |
Example: device identifier simple: -S3.E0: 11,
| symbol | meaning |
|---|---|
| - | "-" → equipment sign |
| S3 | "S" → code letter switch (according to table 1 from DIN40719-2 ) and "3" → consecutive number |
| .E0 | "." → Structural symbol function E → On switch (according to Table 2 from DIN40719-2) and "0" → consecutive number (from 0-9) |
| : 11 | ":" → structure symbol connection and "11" → (first connection identification of an opening switch contact) |
Example: Equipment identifier with system / location identifier: = B05.D04 + A10-F03
| symbol | meaning |
|---|---|
| = B05 | Appendix B05 (Sections 1–3 for the entire system, NN AA NN, N for digits and A for letters, to the left of the outline symbol, DIN 40719-2) |
| . D04 | Subassembly D04 (Sections 4 + 5 for system parts, AA NN, to the right of the outline symbol, DIN40719-2) |
| + A10 | Control cabinet A10 |
| -F03 | Fuse F03 |
Reference identifier, equipment identifier
The current reference designations, formerly referred to as equipment designation, are in the standard EN 81346-2 . This standard replaces the European standard EN 61346-2, which previously replaced the DIN standard DIN 40719-2 in Germany and has been valid since May 2010. The following code letters are defined:
| ISIN book letter |
Purpose or task according to DIN EN 81346-2 | example |
|---|---|---|
| A. | Two or more purposes or tasks - Note: This class is only intended for objects for which no main purpose can be identified. | Bay controller / protection device (combined); Touch screen; Touch screen |
| B. | Converting an input variable (physical property, state or event) into a signal intended for further processing. | Fire guards, Buchholz relay , distance relays, differential protection relays, auxiliary switches, measuring element, measuring relays, measuring resistor, transmitters , microphones , motion switch, photocell , limit switches, limit switches , proximity switches , proximity sensor , optical current transformers , optical voltage transformers , sensor , smoke detector , temperature sensor , overload relays , over-current protection relay, switch, Video camera |
| C. | Storage of material, energy or information. | Capacitor , power capacitor , interference suppression capacitor |
| D. | (Reserved for later standardization). | |
| E. | Supply of radiant energy or thermal energy. | Lighting , lamp, laser, heater , refrigerator; Hot water tank |
| F. | Directly (automatically) protect an energy flow, signals, personnel or equipment from dangerous or undesired states. This includes: Systems and equipment for protective purposes. For protective devices, see code letter B. | Fuses , motor protection switches , circuit breakers , residual current circuit breakers , surge arresters |
| G | Initiate an energy or material flow. Generation of signals as information carrier or reference source; Producing a new type of material or a new product. | Accumulator, alternator , battery , rectifier , solar cell, fuel cell, fan, hoist, conveyor |
| H | Producing a new type of material or product. | Absorption scrubber, centrifuge, crusher, distillation column, emulsifier, fermenter, magnetic separator, mill, pelletizer, rake, reactor, separator, sintering device |
| I. | (Not applicable) | There is a risk of confusion with I for input or current |
| J | (Reserved for later standardization) | |
| K | Processing (reception, processing, provision) of signals or information (excluding objects for protection purposes, see code letter B or F) | Auxiliary contactor, auxiliary relay, timing relay, locking device, switching fault protection device, central processing unit (CPU), voltage regulator, transistor, delay element, control device, regulator , filter, computer, automation device, optocoupler , control valve, trigger, parallel switching device, synchronizing device |
| L. | (Reserved for later standardization) | |
| M. | Provision of mechanical energy (mechanical rotary or linear movement) for drive purposes | Motor , drive coil, drive , actuator , combustion engine, turbine, lifting magnet, actuator |
| N | (Reserved for later standardization) | |
| O | (Not applicable) | There is a risk of confusion with O for output |
| P | Presentation of information | Display , horn , horn, bell , clock , alarm clock , drop indicator relay , LCD display , shop signs, signaling panels, LED , speaker , signal lamp, printer , monitor , synchronoscope, voltmeter, ammeter, power meter, power factor indicator, event counter, operations counter, active power meter , reactive power meter , Meter cabinet |
| Q | Controlled switching or variation of an energy or signal flow or material flow (for signals in control circuits, see code letters K and S) | Circuit breaker, contactor , disconnector, fuse switch (if the main purpose is "protect": see code letter F), fuse disconnector (if the main purpose is "protect": see code letter F), power transistor , earthing switch, switch disconnector, thyristor , switchgear panel |
| R. | Limiting or stabilizing the movement or flow of energy, information or material | Diode , choke , limiter, resistor , Zener diode |
| S. | Converting a manual operation into a signal intended for further processing | Keyboard , light pen , mouse (computer), control switch, selector switch, setpoint adjuster, control panel, control cabinet, button |
| T | Converting energy while maintaining the type of energy; Converting an existing signal while retaining the information content; Changing the shape or shape of a material | Charger , power supply unit , rectifier , amplifier , antenna, frequency converter , matching converter, transformer , current converter , voltage converter , power transformer, inverter , signal converter |
| U | Holding objects in a defined position | Foundation , insulator , cable tray, mounting plate, mounting rail, support, carrier, portal, mast, cabinet, container (housing) |
| V | Processing (treatment) of materials or products (including pre- and post-treatment) | Filters, isolator washing systems, oil treatment systems, separators |
| W. | Conducting or guiding energy, signals or materials or products from one place to another | Busbar, sub-distributor, cable, conductor, data bus, fiber optic cable , bushing, cable screw connection , oil pipe, gas pipe, crane |
| X | Connect objects | Separation and plug connection, terminal strip , solder connection strip , socket |
| Y | (Reserved for later standardization) | |
| Z | (Reserved for later standardization) |