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描述
The HyperLink AL-D15P15DW is designed to provide superior lightning and surge protection for RS-485 control and 15VDC power lines. These protectors incorporate individual protection circuits for the RS-485 control lines and DC power lines. All housed in one weatherproof resistant enclosure.
RS-485 Control Lines
A high power 3-stage design is used to provide protection for the RS-485 control line. The 3-stage design can handle higher-level transients than a protector that uses only diodes. The first stage is comprised of a differential gas discharge tube. Stage two is a pair of current limiting series resistors and the final stage is a low capacitance diode array. The use of three terminal differential gas discharge tubes provides superior common and differential mode protection against conducted transients versus the use of lower cost two terminal tubes. The second stage series resistance limits the power dissipation of the fast diode clamp array in the third stage. This allows time for the slower but higher power gas tubes to flash over. The diode array clamps the leading edge of fast transients to safe levels until the high power gas tubes turn on. This eliminates the damaging leading edge spike that single stage gas tube protectors let leak through. The diode array's low capacitance assures that the protector will not degrade the high-speed signals. The RS-485 control line is connected to the protector via its screw terminal blocks. The AL-D15P15DW is de
RS-485 Control Lines
A high power 3-stage design is used to provide protection for the RS-485 control line. The 3-stage design can handle higher-level transients than a protector that uses only diodes. The first stage is comprised of a differential gas discharge tube. Stage two is a pair of current limiting series resistors and the final stage is a low capacitance diode array. The use of three terminal differential gas discharge tubes provides superior common and differential mode protection against conducted transients versus the use of lower cost two terminal tubes. The second stage series resistance limits the power dissipation of the fast diode clamp array in the third stage. This allows time for the slower but higher power gas tubes to flash over. The diode array clamps the leading edge of fast transients to safe levels until the high power gas tubes turn on. This eliminates the damaging leading edge spike that single stage gas tube protectors let leak through. The diode array's low capacitance assures that the protector will not degrade the high-speed signals. The RS-485 control line is connected to the protector via its screw terminal blocks. The AL-D15P15DW is de
特征
- RS-485控制和电源线路的各个保护电路
- 另外，也保护两条单端数据、模拟或控制线路
- 抗冲击、防风雨型外壳，配绞接锁定盖
應(yīng)用
- RS-485线路，具有15V直流工作电压
- 模拟或网络视频监控摄像头
- 旋转变焦（PTZ）摄像头控制器
- 泳池/温泉浴场以及工业控制器和键盘
- 门禁控制，采用RS-485和15V直流电
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