the C.B operation depends upon relay senses. in realy their is trip coil.
when ever fault occurs then change in c.t occures[current varies] due to that secondary current in c.t changes then magnetising field of trip coil is varies and then relay contacts open then c.b contacts open..........this is the impotance of TRIP COIL
the main reason why we require circuit breakers in the system is to clear faults and isolate the faulted equipment in the shortest of times in a bid to safeguard equipment and personnel from damage or death.tripping is more critical than closing on a breaker hence the need to have two trip coils for maximum reliability.
A secondary shunt releases (extra trip coil) is used forelectrical tripping of the circuit breaker by protectiverelays or manual control devices when more than onetrip coil is required.
A shunt trip breaker is reset the same way as an ordinary breaker, move the handle to the full off position and then to the full on position. First check the tripping circuit, sometimes a latch relay is used to hold the breaker shunt trip coil in the trip position. If this is the case then reset the latch relay first.
Shunt means parallel only..................
A shunt capacitor creates a low resistance path in a circuit so that electricity can pass around to another point. Shunt capacitors create shorts when they receive abnormally high amounts of voltage to correct series circuits.
Yes a shunt trip breaker can be activated manually.
The cost of a shunt trip breaker depends on the amperage and number of poles the circuit connected to it needs. The cost of the shunt trip over a conventional breaker is substantially more.
A secondary shunt releases (extra trip coil) is used forelectrical tripping of the circuit breaker by protectiverelays or manual control devices when more than onetrip coil is required.
Yes, but you need a power source, for the shunt trip coil voltage, in the circuit.
A shunt trip breaker is reset the same way as an ordinary breaker, move the handle to the full off position and then to the full on position. First check the tripping circuit, sometimes a latch relay is used to hold the breaker shunt trip coil in the trip position. If this is the case then reset the latch relay first.
Connect to the circuit neutral wire which should also be white.
You would need to take the "input" wire for the shunt trip breaker to an electrical switch (not alarm initiating switch, which are DC voltage rated) within the Automan unit and connect to the "Common" connection and the "return", the wire to the actual shunt circuit of the breaker, from the "Normally Open" connection of the switch. When the unit activates, the switch will be placed into "Closed" position, therefore completing the circuit and activating the shunt coil.
Shunt means parallel only..................
A shunt capacitor creates a low resistance path in a circuit so that electricity can pass around to another point. Shunt capacitors create shorts when they receive abnormally high amounts of voltage to correct series circuits.
Yes a shunt trip breaker can be activated manually.
A shunt-trip coil is a built-in component of a shunt-trip circuit breaker. It is a magnetic coil that can be energized externally to make the breaker trip to shut off the flow of current. For instance, fire sprinklers are sometimes required in the top of elevator shafts in case of a fire in the shaft. If the sprinklers were to spray water on the electric controls in the elevator cab, people could be hurt or killed, either from electrocution or from the elevator malfunctioning. In these cases, a shunt-trip breaker is installed in the circuit feeding the elevator controls, and the fire alarm system sends a trip signal if it detects waterflow from the sprinkler system. This trips the breaker and removes power from the elevator cab. Once tripped, a shunt-trip breaker requires a person to reset it manually.
In long shunt the shunt field winding is in parallel to both generator and series field. In short shunt the shunt field is in parallel to generator only.
It works just like a normal circuit breaker with one additional function. A shunt-trip breaker also has a built-in magnetic coil that can be energized externally to trip the breaker. For instance, fire sprinklers are sometimes required in the top of elevator shafts in case of a fire in the shaft. If the sprinklers were to spray water on the electric controls in the elevator cab, people could be hurt or killed, either from electrocution or from the elevator malfunctioning. In these cases, a shunt-trip breaker is installed in the circuit feeding the elevator controls, and the fire alarm system sends a trip signal if it detects waterflow from the sprinkler system. This trips the breaker and removes power from the elevator cab. Once tripped, shunt-trip breakers require a person to manually reset them.