BX series static signal relayDetailed product description：

purpose
Used as an indicator for the working status of the entire group and individual components in the secondary circuit and automation control circuit of the power system.

characteristic
Wide operating range: The current type has only one specification, which can meet the full range of 18 specifications from 0.01A-4A, with a voltage drop of less than 2.4 volts, making it convenient for on-site design applications.
Excellent reset performance and flexible method: It has electric reset and manual reset, suitable for remote reset requirements from the control center without human duty. Manual reset only restores the signal itself and does not affect the display and retention of other signals. The reset relay or button contact is stuck, and the reset terminal has a reset potential, but the signal relay can still reliably operate.
○ High reliability: Using Japanese famous brand locking relays, the signal is not lost when power is lost, the wiring is reasonable, and there will be no protection misoperation caused by creepage. Strong anti-interference performance, will not mistakenly send action signals.
○ Large contact capacity and sufficient quantity: There are two pairs of large capacity dynamic contact points that can meet the requirements of central signal and remote control.
Fast action speed: The fast action circuit signal relay can still reliably operate.
○ LED indicator action and power supply: eye-catching and long-lasting. The working condition of the relay is clear at a glance.
○ There are two types of action indicators: convenient for accident analysis.
○ Multiple varieties: There are various shell products from the three major relay factories in China, which can replace all existing signal relay products.  

System working principle block diagram

Model and Replacement Reference Table

model	Exterior structure	Equivalent substitute model	Old product factory
BX-11	HK-19	DX-11	Shangji, Aji
BX-20	JK-5	DX-8	Aji
BX-20A	JK-5	DXM-2A DX-8G	Shangji, Aji
BX-30	A01K	DX-31A DX-31B DX-32A DX-32B	Xu Ji

Main technical parameters
○ Voltage type DC rated starting voltage (V) 24 48 110 220
○ Voltage type DC rated starting current (A) 0.01--4A
○ Rated values of power supply voltage and reset voltage (V) 24 48 110 220
Rated display time of action value, starting circuit consumption, reset value
Voltage type ≤ 70% Ue 20msCurrent type ≤ 9mA 20mThe contact breaking capacity is 250VA or 30VDC5A, with a current not exceeding 2A and a voltage not exceeding 250V, and a time constant of 0.75ms
Withstand voltage 50Hz, AC effective value starting circuit and 1000V contact between other circuits 1000V
The monitor has a lifespan of 30000 hours, an electrical lifespan of 100000 cycles, and a mechanical lifespan of 10000000 cycles.  

Structure, Terminal and Internal Wiring Diagram

BX-20 Internal Wiring Diagram Negative charge return	Internal wiring diagram of BX-20A Negative charge return	BX-30 Internal Wiring Diagram Negative charge return
BX-11 Internal Wiring Diagram Negative charge return	BX-30G internal wiring Negative charge return in the picture	Internal wiring diagram of BX-11G Negative charge return

BX-20 Internal Wiring Diagram Positive Return	Internal wiring diagram of BX-20A Positive Return	BX-30 Internal Wiring Diagram Positive Return
BX-11 Internal Wiring Diagram Positive Return	BX-30G internal wiring Positive Return of Image	Internal wiring diagram of BX-11G Positive Return

Internal wiring diagram of signal relay (front view)

Application wiring diagram reference

	Control the small busbar fuse Zero sequence segment 1 Zero sequence 2nd segment
	Signal small busbar Zero sequence segment 1 action Light sign circuit Zero sequence 2nd segment action Signal relay Working power circuit Signal relay Return circuit Returning from afar Send remote control signals

Schematic diagram of BX-11 static signal relay negative return application