Will the next DL-34 current relay
There is no detailed instructions
He is not the same as the general relay is through the break to control
How the wiring is specific
Current relay and the general relay is slightly different, the device coil diameter is coarse, the number of turns is less, is applied in series with the load, depending on the load current is large, the device coil has enough magnetic field drive contact action, and vice versa action.
Yes, use the relay coil in series to the load circuit, the contact received the need to control the loop
The use of current relays and ordinary relays are different, ordinary relay coil is connected to the control loop, the current relay coil is the string in the main circuit, that is, the load circuit, such as the current relay coil in three A phase of an asynchronous motor is generally used for overcurrent protection
No, the current relay coil is always energized, but the current size of the different armature of its different suction, due to its armature was a spring pulled, only the current to produce the magnetic field suction than the spring when the tension will be connected to contact transmit signal. The magnitude of the operating current can be adjusted by adjusting the magnitude of the spring tension.
You this model is not made, but the use of methods, principles and domestic should be the same.
The coil of the current relay is connected in series with the main circuit (through the load current), which reflects the change in the main circuit current. Through the auxiliary contact closed to open the signal to make the control circuit to make the appropriate response. Generally divided into overcurrent relays and undercurrent relays. Also divided into two types of DC and AC. Current relay coil does not affect the normal operation of the circuit, the coil turns less, thick wire, the impedance is only such a small coil power consumption is small, the line pressure drop is small.
Overcurrent relays are mainly used for frequent start-up and heavy-duty start-up, as overload or short circuit protection for motor or main circuit. After the action need to manually reset. Draw a simple picture.
