I. Use
DX-3 1B, DX-32A and DX-32B signal relays are suitable for DC-operated protection circuits as action indicators. DX-3 1BJ, DX-32AJ and DX-32BJ are suitable for AC operated protection circuits as action indicators.
Second, the structure and principle
This signal relay is an electromagnetic signal relay. There is an attractive coil (current or voltage) on the U-shaped magnetizer. A movable plate is installed on the magnetizer, and an insulating plate on the movable plate pushes two groups of moving contacts.
DX-3 1B is an escapement mechanism for mechanical contact locking, and the nameplate is equipped with a signal indicator.
DX-32A model has an additional holding coil as a voltage locking machine, and a signal lamp is installed on the nameplate.
DX-32B has a set of moving contacts, and the holding coil is connected in parallel with the signal lamp, so the holding coil can still work normally when the signal lamp is burnt out.
Working principle: When the pull-in coil of DX-3 1B signal relay is energized, electromagnetic attraction will be generated to attract the moving plate. At this time, the contact is in the working state (the moving contact is closed), and the limit piece is vertically placed on the signal board to display the action. When the attraction coil is disconnected, the contact and indicator are still in working condition due to the function of the limit piece. When the indicator is pressed, the movable plate returns to the initial position, the limiting piece grasps the indicator, and the contact returns to the initial position.
When the pull-in coils of DX-32A and DX-32B signal relays are energized, electromagnetic attraction will be generated to attract the moving plate. At this time, the contacts are in working state, and a group of contacts will keep the coil energized, and the indicator light will indicate action. When the attraction coil is powered off, the relay will keep working due to the electromagnetic attraction of the holding coil, and when the holding coil is powered off, the relay will return to the initial position.
There are two ways to install relays: embedded and protruding. Please indicate when ordering.
Three. engineering data
3. 1 rating
The rated value of relay working winding is 220, 1 10, 48, 24, 12V or 0.0 1, 0.0 15, 0.02, 0.025, 0.04, 0.05, 0.05.
The rating of DX-32A/B holding loop is 220,110,48v.
3.2 Action value
The working voltage shall not exceed 70% of the rated voltage; The working current shall not exceed 90% of the rated current.
3.3 Holding value: no more than 80% of the rated holding voltage.
3.4 Return value: not less than 5% of the rated value.
3.5 Power consumption: current winding is not more than 0.3W, and voltage winding is not more than 3W.
A dx-32a voltage holding circuit with 220V not more than 10W,10V not more than 5W and 48V not more than 3W.
B dx-32b voltage holding circuit 220V is not more than 20W, 1 10V is not more than 10W, and 48V is not more than 4W.
3.6 See table 1 for coil resistance.
3.7 Contact ability
? A. In a DC circuit with a voltage not exceeding 250V (time constant of 5±0.75 ms) and a current not exceeding 0.5A, 30W can be disconnected.
? B 100VA can be disconnected in AC circuits with voltage less than 250 v (cos φ = 0.4 0. 1) and current less than1v.
3.8 medium strength
The conductive loop of the relay is connected between the exposed nonmetal part and the shell, and between the working winding and the contact loop without holding winding, and should be able to withstand the AC test voltage of 2kV (effective value) and 50Hz for 65438±0min without insulation breakdown or flashover.
3.9 Life: electrical life 1000 times, mechanical life 5000 times.
3. 10 thermal stability: the rated voltage 1 10% is applied to the voltage for a long time, and the rated current is applied to the current winding for a long time. When the ambient temperature is 40℃, the temperature rise of the winding shall not exceed 65℃.
3. 1 1 weight: 0.40kg
3. See figure 1 2 for internal wiring.
3. The structural forms of13 are A0 1K and A01h..
Figure 1 DX-30 series signal relay internal wiring diagram (front view)
Note: R is the step-down resistor connected to the voltage holding circuit.
Fourth, the external structure.
The relay adopts A0 1K, A0 1H and A0 1Q housings.