coil
shunt trip coil used to trip the breaker automatically or manually.
A shunt trip diagram typically illustrates the electrical connections and components involved in a shunt trip circuit, which is used to remotely trip a circuit breaker. It includes elements like the circuit breaker, shunt trip coil, power source, and control switch. The diagram shows how the control switch activates the shunt trip coil, causing the breaker to open and interrupt the circuit. For a specific diagram, it's best to refer to technical manuals or manufacturer specifications.
This is a small electromagnet whose coil is in series with the relay contacts and whose contact is in parallel with them. The electromagnet is energized, closing its contacts in parallel with the relay contact as soon as the trip coil is energized, and drops out when the circuit breaker opens.
Usually the breaker's shunt trip coil is tied to a corresponding current transformer that is sized to the amperage that is allowed to be passed through the breaker. These types of breakers can also be connected into a distribution monitoring device. If the monitor detects a phase reversal or phase loss or voltage rise or drop the breakers shunt trip coil is remotely energized and isolates equipment down stream from the fault. Shunt trip coil circuits are also used as safety circuits where the situation calls for only one breaker to be energized at a time. If the second breaker is inadvertently closed, this would allow both breakers to be on, the second breaker's auxiliary contacts that are an internally part of that breaker will close the safety circuit and energize the shunt trip in the first breaker to causing it to open. So as you can see the two wires could be part of many wiring configurations depending on what situation calls for.
A shunt trip breaker is installed like any other molded case breaker. The only difference is that it has an internal tripping coil that is usually connected to a C.T. The breaker is usually mounted in a MCC cabinet The top of the breaker is bolted to the MCC bus bars and the bottom of the breaker is connected to the load. The load conductors pass through the C.T.'s which induces a current into the circuit to trip the tripping coil in the breaker.
shunt trip coil used to trip the breaker automatically or manually.
A common symbol for an electromagnet in circuit diagrams is a coil of wire with a core material, such as iron, placed within the coil. The symbol typically includes a zigzag line to represent the wire coil and a straight line through the center to represent the core material.
The inductor symbol resembles a coil of wire of 3 to 5 turns.
A coil symbol with a tap (usually close to one end, but not always).
220V
An "s" with coil around it
Having two trip coils in a circuit breaker provides redundancy and increased reliability. If one coil fails, the other can still operate the breaker. Additionally, using two trip coils may allow for greater flexibility in the control and operation of the breaker.
kwktp
My understanding is that on most (if not all) differential relays, there are currents coming in from both sides of the operating coil. These currents should cancel out, or in reality, nearly cancel out. Therefore, the effective current in the operating coil is zero. When the net current in the operating coil is not zero, the relay trips. There are instances when you don't want the relay to trip though. Therefore, the operating coil works together with a restraint coil. (Well probably 2 restraint coils.) The relay will trip if the operating coil's current must exceed the restraint coil's current by a certain amount.
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
From everything that I have looked at QT is a private company. there is no ticker symbol, becasue it is not available to the public.
A shunt trip diagram typically illustrates the electrical connections and components involved in a shunt trip circuit, which is used to remotely trip a circuit breaker. It includes elements like the circuit breaker, shunt trip coil, power source, and control switch. The diagram shows how the control switch activates the shunt trip coil, causing the breaker to open and interrupt the circuit. For a specific diagram, it's best to refer to technical manuals or manufacturer specifications.