6 pin relay diagram

1. What is 87 and 87a on a relay?
2. How do you test a 6 pin relay with a multimeter?
3. What is 85 and 86 on a relay?
4. Is 85 always ground?
5. What is L1 and L2 in a relay?
6. Will a 12 volt relay work with 6 volts?
7. How many Ohms should a relay read?
8. What is T1 and T2 in relay?
9. What is A1 and A2 on a relay?
10. What is an 87a relay?
11. What is 87B relay?
12. How does a 87 differential relay work?
13. Can I supply 12V to 5V relay?
14. What is T1 and T2 in relay?
15. Can I use 12V relay on 5V?
16. What is A1 and A2 on a relay?
17. What is 50N and 51N in relay?
18. What is o C and E F relay?

What is 87 and 87a on a relay?

85 and 86 are the coil pins while 30, 87, and 87a are the switch pins. 87 and 87a are the two contacts to which 30 will connect. If the coil is not activated, 30 will always be connected to 87a. Think of this as the relay in the Normally Closed (OFF) position.

How do you test a 6 pin relay with a multimeter?

Take the leads of the multimeter and connect them across the coil terminals of the relay. For a normal coil, the multimeter should read anywhere between 40Ω to 120Ω. If the coil is damaged i.e., it is open, the meter shows out of range and you have to replace the relay.

What is 85 and 86 on a relay?

Realizing that 85 and 86 are the coil pins, these pins will be transferring the current through the coil. 85 will be used to ground your relay, while 86 will be connected to the switchable power. 87 and 87a will be connected to your controlled accessories that you wish to turn on and off with your relay.

Is 85 always ground?

(Note that if the circuit is for a horn, most horns are switched on the negative side of the control circuit, not on the positive. That is, on a horn, 12V should always be present on 86, and 85 is grounded when the horn button is pressed).

What is L1 and L2 in a relay?

1. The two vertical lines that connect all devices on the relay logic diagram are labeled L1 and L2. The space between L1 and L2 represents the voltage of the control circuit. 2. Output devices are always connected to L2.

Will a 12 volt relay work with 6 volts?

Most 12v relays need about 12v to “pull-in” but will “hold” on about 6v.

How many Ohms should a relay read?

The relays are usually supplied with 12 V directly from the vehicle battery. The electrical resistance (impedance) of the coil is vary and is different depending upon the manufacturer of the relay as well as relay's type, but in general a typical value should be expected between 50 ohms and 200 ohms.

What is T1 and T2 in relay?

Terminals T1 and T2 are a thermally activated contact on the resistor to indicate an overheat condition of the resistor. The contacts are normally closed and open once the braking resistor temperature reaches 120 degrees Centigrade. The minimum voltage/current for these contacts is 24VDC at .

What is A1 and A2 on a relay?

What Do A1 and A2 Mean on a Contactor? A1 and A2 on a contactor typically refer to either end of the electromagnetic coil assembly. Most contactor manufacturers use A1 and A2 to designate the two terminals connecting electrical power to the contactor's magnetic coil.

What is an 87a relay?

87a. High current (load) Output to other device, normally closed, pulled open when coil is energized.

What is 87B relay?

The Type 87B relay is a high-speed or instantaneous differential voltage device intended primarily for bus differential protection. High current sensitivity also allows the relay to be used for differential protection of resistance grounded systems and machines or reactors.

How does a 87 differential relay work?

Current differential relays typically are equipped with restraint windings to which the CT inputs are to be connected. For electromechanical 87 current differential relays, the current through the restraint windings for each phase is summed and the sum is directed through an operating winding.

Can I supply 12V to 5V relay?

12V will definitely damage the relay board.

This 2 channel relay board requires about 200mA at 5V with both relays energized. I suppose the simplest solution would be to use a 5W, 6.8V zener diode connected in series with 12V to drop it to 5.2V.

What is T1 and T2 in relay?

Terminals T1 and T2 are a thermally activated contact on the resistor to indicate an overheat condition of the resistor. The contacts are normally closed and open once the braking resistor temperature reaches 120 degrees Centigrade. The minimum voltage/current for these contacts is 24VDC at .

Can I use 12V relay on 5V?

No. You cannot. You can, however, use a 5V relay instead of a 12V relay as long as you put the appropriate resistor in series with the relay coil (so that the relay coil sees the same voltage across it and thus current through it that it normally needs).

What is A1 and A2 on a relay?

What Do A1 and A2 Mean on a Contactor? A1 and A2 on a contactor typically refer to either end of the electromagnetic coil assembly. Most contactor manufacturers use A1 and A2 to designate the two terminals connecting electrical power to the contactor's magnetic coil.

What is 50N and 51N in relay?

2 device number 50N and 51N) that operates when the current exceeds a predetermined value. Relay 50N operates instantaneously. Relay 51N operates based on IEC 60255 Standard Normal Inverse IDMT (Inverse Definite Minimum Time) trip characteristic.

What is o C and E F relay?

The combined overcurrent and earth-fault relay REJ 515 is a secondary relay which is connected to the current transformers of the object to be protected. The overcurrent unit and the earth-fault unit continuously measure the phase currents and the neutral current of the object.