Ads
related to: switchgear current transformersupplyhouse.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
Typically, switchgear in substations is located on both the high- and low-voltage sides of large power transformers. The switchgear on the low-voltage side of the transformers may be located in a building, with medium-voltage circuit breakers for distribution circuits, along with metering, control, and protection equipment.
Current transformers may be installed inside switchgear or in apparatus bushings, but very often free-standing outdoor current transformers are used. In a switchyard, live tank current transformers have a substantial part of their enclosure energized at the line voltage and must be mounted on insulators.
When a large fault current flows through the circuit breaker, this is detected through the use of current transformers. The magnitude of the current transformer outputs may be used to trip the circuit breaker resulting in a disconnection of the load supplied by the circuit break from the feeding point.
IEC 60296 Fluids for electrotechnical applications – Unused mineral insulating oils for transformers and switchgear; IEC 60297 Mechanical structures for electronic equipment – Dimensions of mechanical structures of the 482,6 mm (19 in) series; IEC 60298 high voltage switchgear in metallic enclosure (withdrawn)
A block diagram of a bipolar HVDC transmission system, between two stations designated A and B. AC – represents an alternating current network CON – represents a converter valve, either rectifier or inverter, TR represents a power transformer, DCTL is the direct-current transmission line conductor, DCL is a direct-current filter inductor ...
In the larger current ratings, dry air is forced through the enclosures and within the tubular conductors for forced-air cooling of the conductors. The cooling air is recirculated through a heat exchanger. Some items of switchgear, such as circuit breakers and isolating switches, are made in housings compatible with the isolated-phase bus ...
Ads
related to: switchgear current transformersupplyhouse.com has been visited by 100K+ users in the past month