You will need to know the amount of current flowing through the coil when 220 volts is applied across it. A resistor in series with the coil will limit the current so that the coil only sees 220 volts. The resistor will need to drop 57 volts. So, 57 volts divided by the current in amps will give you your required resistance. You will need a resistor with a high power dissipation rating with 57 volts across it. Your resistor will probaly need to dissipate several watts. For example: A 220 volt coil with 300 milliamps (.3 amps) will require a resistor of 733 ohms. The power dissipation of the resistor would need to be 17.1 Watts! You might try using a light bulb as a series resistor. Ensure that it can handle 57 volts. To complicate matters, is that AC or DC you are using? AC relays have inductance build in, in order to increase the specific "ac resistance", thus the same coil could use as little as 0,001A so you will need a very low value resistor. Anyway, if any 220V relay uses as much as 300mA, I doubt if you will be able to pick it up with one hand! Such a relay coil will draw about 66W of power! I have a 16A rated contact 230V relay. Its current is 0,0015A that is equivelant to 0.33W at 220V!
air charge resistor relay
To determine the value of Stabilizing resistor Rs = Vs/Is = If(Rct +2Rl)/Is Where, Rs = resistance value of the stabilizing resistor Vs = voltage at which the relay will operate Is = current flowing through the stabilizing resitor and the relay If = maximum secondary fault current magnitude Rct = internal resistance of the current transformer Rl = resistance of attached wire leads
The "pick up" of a relay is a setting at which the relay will begin to operate. Such as an overcurrent relay - if the pickup is set to 5A, when 5A is flowing through the relay, the relay will operate.
Since you're checking the resistor, I would assume you checked the fuse/relay for the blower motor. If not check that. If you have then there would be an open wire between the relay and the resistor.
No, they are not the same. A resistor is a current reducer and a relay is essentially a switch (using low voltage to switch high voltage on/off)
The blower motor relay is located behind the glove box compartment beside the blower motor resistor. When you remove the glove box compartment, just look to the left of the resistor and the relay is located directly beside it with a metal retaining frame holding both the resistor and the relay.
A resistor is an electrical item/unit that takes a pre-determined voltage & controls the output to various voltages. A relay is an electrical switch
Directional relay is that relay which operate in the direction of the fault current. SAPTARSHI BHOWMICK
Normally if you blower will not shut off, you have a bad resistor or relay...most likely the relay...
Your blower is on fast because a relay that acts as a reostat that lowers the voltage to the blower depending what setting you put it in has blown out. Replace this relay and all will be well again. The relay in question is usually called a 'Blower Motor Resistor', is usually easy to replace yourself if you can operate a screwdriver, and usually costs between $15 and $50.
LED interface requires typical 220 Ohm resistor in series While in case of relay resistor comes across coil with its value depends on supply voltage
I need to know which relay you are refering to? What does it operate?
I am assuming you are referring to the air conditioner blower motor. If so, check the fuses first. The resistor could be defective as well as the relay and fan motor.
Care must be taken to ensure that the relay does not operate from the spill current resulting from unequal CT saturation during motor starting, where the high currents involved will almost certainly saturate the motor CT's. It is common to use a stabilising resistor in series with the relay. The effect of the stabilising resistor is to increase the effective setting of the relay under these conditions, and hence delay tripping. When a stabilising resistor is used, the tripping characteristic should normally be instantaneous. An alternative technique, avoiding the use of a stabilising resistor is to use a definite time delay characteristic. The time delay used will normally have to be found by trial and error, as it must be long enough to prevent maloperation during a motor start, but short enough to provide effective protection in case of a fault.
What relay are you trying to replace? (what does it operate?) horn
The voltage for a potential relay will depend on the circuit that the relay is installed in. The relay can be made for low voltages (5v) to higher voltages (440.)
Nope. One is a relay, the other is a control module. The control module TELLS the relay when to operate.
The high-speed relay is part of the blower resistor board, mounted in the air duct behind the coolant/washer bottles. Follow the wires from the blower motor, they lead to the resistor connector block that the blower resistor board is plugged into.
I think the blower motor relay is internal to the blower motor resistor which is located under the passenger side dash.
Not sure about the relay, but there is a blower resistor assembly located on the heater case to the right of the blower motor.
Its not the relay, it is the blower motor resistor.
The 1998 Dodge Neon does not have a relay. It does have a blower motor resistor that could be bad.