Surge protector for bus and siren of burglary alarm system, APS-2B/1S

Surge protection of alarm panel, bus and bell surge protector for burglary alarm system, APS-2B/1S, manufacturer

The APS-2B/1S protects alarm control panels against the effects of overvoltages and surge discharges induced in cables communication buses and external sirens. Two independent and configurable communication bus protection lines, allow for use in systems where there are separate buses for keypads and emergency line modules. For increase effectiveness of protection and elimination of damages as a result of potential differences, MOSFET fuses were used and jumpers built-in configuring surge protection for bus type: RS-485 or DATA / CLOCK. The effectiveness of protective circuits is 2kA for each wire conductor a high-value loads are discharged into the ground via a PE line. Because communication buses also use power,two independent 12VDC protection circuits were made for each of them, with an efficiency of 2kA.

The siren's protective path has a protective efficiency of up to 10kA on each wire of conductor of the cable, due to the installation of these devices outside and the high risk of penetration of large loads as a result of spark jump. The siren protection has been divided into one high-current (2A) and two low-current (100mA) paths.

The high-current power path is used to directly power the siren without its self-power or to supply the siren with a battery. The ground supply of this circuit has been separated from other arrester circuits due to the control panels that can control sirens ground or + power. Low-current paths are intended for use with the acoustic / optic control signals of signaling devices with their own power supply or their tamper circuits.
The product is made in the form of a module, mounted in a dedicated housing APS-BOX along with other modules that can create a comprehensive protection system for all alarm control panel signals.



Surge protection for siren and modules of burglary alarm system

Example of siren protection with battery and two branches of the RS-485 bus


Surge protection for burglary alarm system

An example of siren protection without battery and two different bus lines.



Bus lines
Protection channels 2 x Data + 2 x Power
Input / Output connection Screw terminal
Rated Voltage DC (line-ground) UN 90V DC
Maximum Voltage (line-ground) UC 110V DC
Protection level 1kV/μs (line-ground) UP 600V
Surge current (8/20µS, line-ground ) Iimp 2kA
Rated Voltage DC (line-line) UN 12V DC
Maximum Voltage (line-line) UC 13V DC
Protection level 1kV/μs (line-line) UP 30V Power/ 18V Data (with MOSFET reaction)
Surge current (8/20µS, line-line) Iimp 250A Power / 2kA Data (with MOSFET reaction)
ElDecoupling element Resistor / MOSFET fuse
Serial resistance 2,2Ω Power/ 6Ω Data
Rated current IN 1A Power/ 100mA Data
Siren line
Protection channels 1 x Power+ 2 x Control
Rated Voltage DC (line-line) UN 13.8V DC
Maximum Voltage (line-line) UC 15V DC
Protection level (line-line) UP 30V Power/ 18V Control (with MOSFET reaction)
Surge current (8/20µS, line-line) Iimp 250A Power/ 2kA Control (with MOSFET reaction)
Rated Voltage DC (line-ground) UN 90V DC
Maximum Voltage (line-ground) UC 110V DC
Protection level 1kV/μs (line-ground) UP 600V
Surge current (8/20µS, line-ground ) Iimp 10kA
Rated current In 1A Power/ 100mA Control
Common features
Dimensions 102 x 52 x 25 (mm)
Application Indoor
Mounting Dedicated housing
Operating temperature -30ºC~60ºC