Un 12VDC CCTV Surge Protection Device , RS422 Connection Data Line Protection

Un 12VDC CCTV Surge Protection Device , data lines 12V Surge Protector

Signal Line Protector OBVXJ

Surge protection devices designed for protection of data, communication, measuring and control lines against surge effects

OBVXJ is a protector with RS485 input and output connectors, able to hold up nominal discharge currents of 5kA for each line.
 

Technical Parameters

○ Protection for data lines and the digital or analogical equipments connected (computers, PLCs, discharge cells, etc.).

○ Wide variety of SPDs for different working voltages.
○ Both common and differential protection recommended for this type of lines.
○ Allows the connection of two pairs of lines with a very small size (0,75 DIN modules).
○ Pluggable modules for its easier substitution in case of failure without the need of disconnecting the wiring. When substituting the module the line suffers no interruptions.
○ Earthing implemented through a metallic sheet opposite to the fixing DIN rail.
○ In normal conditions stays inactive, without affecting the line working and without producing any leakage.
○ Low residual voltage in all the working voltages.
○ Very fast response.
○ Connection with screw pressure, which provides better lightning current withstanding capacity than usual telephone connectors.

Feature&Benefits
 
-Easy installation
-Fail-safe /self-protected design

-Very fast response
-Hybrid GDT and Diode

-TechnologyLong distance transmission
-Good transmission effect

-Strong anti-interference
-complies lEC 61643-21 standard

Application

●HVAC applications
● AC drives
●UPS systems
●Security systems
●IT/Data centers
●AC/DC distribution
●Power supplies
●Industrial automation
●Telecommunications
●Motor controls systems
●PLC applications
●Power transfer equipment

Others

Technology SPD parameter(Note:According to user requirement ,can be customized Uc=140V,440V,550V,voltage range of range of the SPD):

How to choose a suitable power arrester:

　　 When choosing lightning arresters to protect different types of equipment in an area, the following factors should be considered comprehensively:

●The intensity of thunderstorms in the area, the number of days of thunderstorms and the parameters of the maximum discharge current and the probability of occurrence;

●The value of the protected equipment;

●The level of impact resistance of the protected equipment;

●The social importance of protected equipment;

●Determine the power surge arrester with different protection voltage UP and discharge current;

Key parameters of power surge protector:

●Maximum continuous withstand voltage Uc (rms):
means that the arrester can work continuously at this voltage value without affecting its parameters as the arrester. Uc is non-linearly proportional to the protection voltage Up.

● Maximum discharge current Imax:
Use 8/20μs wave surge arrester once, the maximum discharge current that can withstand. It can be selected according to the local thunderstorm intensity Ng (or the average annual thunderstorm day Td) and environmental factors.

●Residual voltage Ur and protection voltage Up
Residual voltage Ur: Refers to the residual voltage value under the rated discharge current In.
Protection voltage Up: The protection voltage Up is related to the Uc voltage and Ur. According to the characteristics of the zinc oxide varistor, when the Uc value of the selected varistor is high, its Up and Ur will increase accordingly, such as when the discharge current is 10kA (8/20μs):
Uc=275V Ur (10kA, 8/20μs) ≤1200V
Uc=385V Ur (10kA, 8/20μs) ≤1600V
Uc=440V Ur (10kA, 8/20μs) ≤1800V