What is the function of a protective relay?
What is the function of a protective relay?
•The function of protective relaying is to cause the prompt removal from service of an element of a power system when it suffers a short circuit or when it starts to operate in any abnormal manner that might cause damage or otherwise interfere with the effective operation of the rest of the system.
How is a relay connected to a wall switch?
A wall switch relies on someone to flip it which will then control a light or some other type load. A relay is switched by electrical power and not a human. This is done by energizing a coil which is internal to the relay and by energizing the coil, the relay changes state just like a wall switch would.
What to do when your electric fireplace is not working?
Check the Power Because electric portable fireplaces run off electricity, the first place to check is in the power supply when the unit is not working. You can check this in one of two ways. If you have a voltage tester, you can easily check the power outlet for voltage to ensure there is power available in the outlet.
How does an overload relay protect the motor?
It senses overloading of motor and interrupts the power flow to the motor, thus protecting it from overheating and winding damages. Apart from overloads, it can also protect the motor from phase loss/ failures and phase imbalance. They are very commonly known as OLR.
A wall switch relies on someone to flip it which will then control a light or some other type load. A relay is switched by electrical power and not a human. This is done by energizing a coil which is internal to the relay and by energizing the coil, the relay changes state just like a wall switch would.
How do you connect wires to a gas fireplace?
Connect the wires from the controller to the terminals marked LOAD on the relay. Next, connect the wires going to the old manual switch to the terminals marked with the switch symbol. When connecting the switch and load wires, the order of the wires does not matter.
Where are the electrical outlets for a fireplace?
First, there was a wire behind the fireplace that went to two separate outlets next to the fireplace – one on the left and one on the right. I took this wire and cut it in half and added a wire for the outlet above the fireplace.
Where do you run the wire from a relay?
The diagram shows two leads coming from the relay. Then I run the second wire of the lights or other accessory to a good ground on the frame of the vehicle. If the wires will not be soldered together and crimped connectors will be used it’s a good idea to put a dielectric paste on the connectors where they come in contact.