1. Purpose
The DX-34 signal relay (hereinafter referred to as the relay) is suitable for remote reset action signal (light) indication in DC operated relay protection and automatic control systems.
The relay adopts a small medium power sealed magnetic holding relay as the actuator, and is composed of external resistors and indicator lights.
Relay terminals 1-6 (working winding) are supplied with starting voltage (or current), and when it reaches the action value of the relay, the relay acts, the dynamic contact closes, and the red indicator light V2 (light-emitting diode) lights up: after the working winding is powered off, the relay armature is attracted by the permanent magnet, and the dynamic contact can self maintain and close, and the indicator light lights up: when terminal 4-9 (return winding) is supplied with voltage and its value reaches the support and return voltage value, the relay returns to its initial state before action, the dynamic contact opens, the indicator light goes out, and prepares for the next action.
2. Structure and Working Principle
The DX-34 signal relay adopts the HK-5/10 housing, and the external shape and installation hole size are shown in the appendix of this manual. The internal wiring is shown in Figure 1.

Figure 1 Internal wiring diagram
3. Technical requirements
3.1 The specifications of the relay are shown in Table 1.
3.2 The operating value of voltage type relays shall not exceed 70% of the rated voltage, and that of current type relays shall not exceed 90% of the rated current.
3.3 The reset value shall not exceed 70% of the rated reset voltage.
3.4 The action time shall not exceed 10ms.
3.5 Contact breaking capacity DC 220V/0.2A/40W
3.6 Power consumption: The power consumption of the working winding is less than 2.5W, and the power consumption of the return winding is less than 2.5W.
3.7 Dielectric strength: 2kV/50Hz/1min
The electrical lifespan is 5103 times.

4. Selection Notice
When selecting, the model, name, operation, return rating, and installation method of the relay should be specified.