DX-3 type flash relayDetailed product description：

purpose
The DX-3 relay is used for signal indication. When the protected system fails and the main protection relay operates, various light signals are controlled through the contacts of the flashing relay.

Principle of Action 2
When the rated voltage is applied to the power supply circuit of the relay, the parallel capacitor is charged through an additional resistor, and the voltage gradually increases. When the voltage rises to the operating voltage of the intermediate relay, the relay operates and disconnects the power supply circuit. At this point, the capacitor is discharged through the intermediate relay, and the voltage at the relay's operating position gradually decreases. When the voltage at both ends of the capacitor drops to the return voltage of the intermediate relay, the relay is released, and the movable part returns to its original position, connecting the power supply circuit and starting to repeat the above cycle.

The internal wiring of the relay is shown in Figure 1.

The appearance of the relay is shown in Figure 2 (wiring before and after the board), and the hole size is shown in Figure 3.


Pre board wiring

Rear wiring of the board
Figure 2 External dimensions



Figure 3 Hole size

3 Technical data
3.1 The specifications of the relay are shown in Table 1.

Rated current (V)	Number of contacts
DC 48，110，220	Two sets of dynamic combination, one set of dynamic disconnection
AC 220，110

3.2 When the relay stops working, the voltage at which the movable part returns to its original position shall not be less than 3% of the rated voltage.
3.3 The flashing frequency is 40-100 times per minute.
3.4 The power consumption at rated voltage shall not exceed 7W DC and 12VA AC.
3.5 The contact is allowed to pass a 5A closing current for a long time.
3.6 Dielectric strength: withstand AC 50Hz, 2kV test voltage, and there should be no breakdown or flashover phenomenon after 1 minute.
3.7 Coil resistance (see Table 2)

DX-3 type	DC voltage	220V	110V	48V
	coil resistance	2700V	2700V	810V
	Serial resistor	1.5KV /10W+2KV /7.5W	1.5KV /10W	1.5KV /10W

4 Ordering Instructions
4.1 Name and model of relay.
4.2 Rated voltage.
4.3 Number of relays and delivery date.
4.4 Wiring form: front or back of the board.

DX-3 type flash relay（No image available）