Circuit-breaker: Difference between revisions
From Electrical Installation Guide
m (1 revision: no page modification, previous revision = imported ch.H pages cleaned-up) |
CleanUp2016 (talk | contribs) (Cleanup_2016) |
||
| Line 2: | Line 2: | ||
{{Highlightbox| | {{Highlightbox| | ||
The circuit-breaker/disconnector fulfills all of the basic switchgear functions, while, by means of accessories, numerous other possibilities exist | The circuit-breaker/disconnector fulfills all of the basic switchgear functions, while, by means of accessories, numerous other possibilities exist}} | ||
}} | |||
As shown in {{FigureRef|H23}} the circuit-breaker/ disconnector is the only item of switchgear capable of simultaneously satisfying all the basic functions necessary in an electrical installation. | As shown in {{FigureRef|H23}} the circuit-breaker/ disconnector is the only item of switchgear capable of simultaneously satisfying all the basic functions necessary in an electrical installation. | ||
| Line 10: | Line 8: | ||
Moreover, it can, by means of auxiliary units, provide a wide range of other functions, for example: indication (on-off - tripped on fault); undervoltage tripping; remote control… etc. These features make a circuit-breaker/ disconnector the basic unit of switchgear for any electrical installation. | Moreover, it can, by means of auxiliary units, provide a wide range of other functions, for example: indication (on-off - tripped on fault); undervoltage tripping; remote control… etc. These features make a circuit-breaker/ disconnector the basic unit of switchgear for any electrical installation. | ||
{{TableStart|Tab1265|3col}} | |||
{| | |||
|- | |- | ||
! Functions | ! colspan="2" | Functions | ||
! Possible Conditions | ! Possible Conditions | ||
|- | |- | ||
| Isolation | | colspan="2" | Isolation | ||
| | | | ||
* | * | ||
|- | |- | ||
|- | |- | ||
| Control | | rowspan="3" |Control | ||
| Functional | | Functional | ||
| | | | ||
* | * | ||
|- | |- | ||
| Emergency switching | | Emergency switching | ||
| | | | ||
*(With the possibility of a tripping coil for remote control) | *(With the possibility of a tripping coil for remote control) | ||
|- | |- | ||
| Switching-off for mechanical maintenance | | Switching-off for mechanical maintenance | ||
| | | | ||
* | * | ||
|- | |- | ||
| | | rowspan="4" | Protection | ||
| Protection | |||
| Overload | | Overload | ||
| | | | ||
* | * | ||
|- | |- | ||
| Short-circuit | | Short-circuit | ||
| | | | ||
* | * | ||
|- | |- | ||
| Insulation fault | | Insulation fault | ||
| | | | ||
*(With differential-current relay) | *(With differential-current relay) | ||
|- | |- | ||
| Undervoltage | | Undervoltage | ||
| | | | ||
*(With undervoltage-trip coil) | *(With undervoltage-trip coil) | ||
|- | |- | ||
| | | colspan="2" | Remote control | ||
| Remote control | |||
| | | | ||
* Added or incorporated | * Added or incorporated | ||
|- | |- | ||
| | | colspan="2" | Indication and measurement | ||
| Indication and measurement | |||
| | | | ||
*(Generally optional with an electronic tripping device) | *(Generally optional with an electronic tripping device) | ||
|- | |- | ||
| | {{TableEnd|Tab1265|H23|Functions performed by a circuit-breaker/disconnector}} | ||
{{Manual_TOC | | {{Manual_TOC | | ||
| Line 93: | Line 69: | ||
}} | }} | ||
[[ru:Автоматический выключатель]] | |||
[[zh:断路器]] | [[zh:断路器]] | ||
Revision as of 00:23, 2 December 2016
The circuit-breaker/disconnector fulfills all of the basic switchgear functions, while, by means of accessories, numerous other possibilities exist
As shown in Figure H23 the circuit-breaker/ disconnector is the only item of switchgear capable of simultaneously satisfying all the basic functions necessary in an electrical installation.
Moreover, it can, by means of auxiliary units, provide a wide range of other functions, for example: indication (on-off - tripped on fault); undervoltage tripping; remote control… etc. These features make a circuit-breaker/ disconnector the basic unit of switchgear for any electrical installation.
| Functions | Possible Conditions | |
|---|---|---|
| Isolation |
| |
| Control | Functional |
|
| Emergency switching |
| |
| Switching-off for mechanical maintenance |
| |
| Protection | Overload |
|
| Short-circuit |
| |
| Insulation fault |
| |
| Undervoltage |
| |
| Remote control |
| |
| Indication and measurement |
| |
Fig. H23 – Functions performed by a circuit-breaker/disconnector
