5SHY4045L0001 3BHB018162R0001 3BHE009681R0101模块备件

3BHB018162R0001

连续音（报警）信号驱动每个电台的扬声器放大器达到大12瓦。
注：如果电台仅用于语音（音频）信号，则上述距离可为：
乘以因子2，因为语音信号不具有
连续音色；因此，它们不需要那么多的平均电流，从而减少电缆IR
结果将是下降。
 使用GAI Tronics提供的电缆。
 导线电阻（欧姆）是裸铜1000英尺处适用AWG的标称值，
20ºC（68ºF）条件下的绞合线。使用的导线电阻值如下：
14号AWG=~2.525欧姆；12号AWG=~1.588欧姆；10号AWG=~0.999欧姆；8号AWG=~0.628欧姆
 电缆线路馈电点处的直流电压（连接电池的浮充）＝~26.6 V直流
 电缆运行中后一个单元的直流电压=小21 V直流电压
 无论装置沿电缆敷设的位置如何，电站装置电流消耗（I）都是相同的
易于计算。（当装置产生12瓦正弦波输出时为1.1安培。）
 距离反映出误差幅度减少了3%。
对于上述以外的条件，以下公式可能有助于计算近似值
单站的大距离。
对于失真小的连续音调应用：
仅对于语音操作，将上述结果乘以因子2。
示例：如果电压馈送为27.5，单个直流站的近似大距离是多少
在20ºC时使用直流电压和14号AWG电线？
信息：
 20ºC时的14号AWG=~0.002525欧姆/英尺 2对于环路R
 VFEEDPOINT=27.5 V直流电
解决方案：
（27.5伏-21伏）/（2 0.002525欧姆/英尺） 1.1安培）
= 6.5 / 0.005555
=1170英尺（对于连续音调信号），或对于语音信号高达2340英尺（因子2）
酒吧42004-147H
型号702-002、732-102和733-002 24 V直流单方放大器外壳第4页，共12页
f： \standard ioms-当前版本\42004安装手册\42004-147h.doc
08/13
安装
732-102型防风雨金属外壳配有预钻孔电缆开口和
带有顶部和底部盖塞的导管毂，以防止污染。型号702-002
室内外壳和733-002型防风雨非金属外壳未配备：
导管或电缆开口。
在安装外壳之前，使用提供的模板钻孔或冲孔这些开口。这个
建议通过外壳底部靠近后表面的电缆引入点，以防止
防止湿气滴落到端子或PCB上。电缆入口的辅助位置位于顶部
朝向外壳的侧面。避免顶部居中，因为它可能会干扰插入式放大器
容器在任何情况下，都不应在外壳的侧面引入电缆，因为这可能会
干扰插入式放大器的安装。
有关具体细节，包括安装孔尺寸

3BHB018162R0001

3BHB018162R0001
Continuous tone (alarm) signals driving each station’s speaker amp to a maximum of 12 watts. NOTE: If the station is used for speech (audio) signals only, the distances stated above can be multiplied by a factor of 2 because speech signals do not have the energy content that a continuous tone has; therefore, they do not require as much average current and thus less cable IR drop will result.  GAI-Tronics-supplied cable is used.  Wire resistance (ohms) is the nominal value for the applicable AWG at 1,000 feet of bare copper, stranded wire @ 20º C (68º F). Wire resistance values used are as follows: No. 14 AWG = ~2.525 ohms; No. 12 AWG = ~1.588 ohms; No. 10 AWG = ~0.999 ohm; No. 8 AWG = ~0.628 ohm  DC V at cable run’s feed point (Float charge of connected batteries) = ~26.6 V dc  DC V at the last unit in cable run = 21 V dc minimum  Station unit current draw (I) is the same regardless of the unit’s placement along the cable run for ease of calculation. (1.1 amperes when unit is producing a 12-watt sine wave output.)  Distances reflect a 3% reduction for margin of error. For conditions other than above, the following formula may be helpful in calculating the approximate maximum distance for a SINGLE station. For CONTINUOUS tone applications with minimum distortion: For SPEECH operation only, multiply the above result by a factor of 2. Example: What is the approximate maximum distance for a single dc station if the voltage feed is 27.5 V dc and a No. 14 AWG wire is used @ 20º C? Info:  No. 14 AWG @ 20º C = ~0.002525 ohm per foot  2 for LOOP R  VFEEDPOINT = 27.5 V dc Solution: (27.5 V – 21 V) / ((2  0.002525 ohm per foot)  1.1 amps) = 6.5 / 0.005555 = 1,170 feet (for CONTINUOUS TONE signal), or up to ~2,340 feet (factor of 2) for SPEECH signals Pub. 42004-147H Model 702-002, 732-102, and 733-002 24 V DC Single-Party Amplifier Enclosures Page 4 of 12 f:\standard ioms - current release\42004 instr. manuals\42004-147h.doc 08/13 Mounting The Model 732-102 Weatherproof Metallic Enclosure is supplied with pre-drilled cable openings and conduit hubs with top and bottom cap plugs in place to prevent contamination. The Model 702-002 Indoor Enclosure and the Model 733-002 Weatherproof Non-metallic Enclosure are not supplied with conduit or cable openings. Drill or punch these openings using the template supplied before mounting the enclosure. The recommended cable entry point is via the bottom of the enclosure near the rear surface to prevent moisture from dripping onto the terminals or PCBAs. A secondary location for cable entry is in the top of the enclosure toward the sides. Avoid the top center, as it may interfere with the plug-in amplifier receptacle. Under no circumstances should cable entries be made in the side of the enclosure as this may interfere with the installation of the plug-in amplifier. For specific details including mounting hole dim