灵敏度系统推荐规程-中英对照
灵敏度系统应用、设计、设施、维护和测试推荐规程
2009年修订(5页)
A.目的
这部分内容描述了灵敏度系统应用、设计、设施、维护和测试推荐规程，符合手册第3.1.20部分(自动高速公路-铁路平交道口报警系统控制推荐功能/操作指南)。陈述了操作规程建议的一般规定。
B.总则
1. 灵敏度系统应用设计、设施、维护和测试符合制造商的和铁路说明。
2. 在影响报警的正常运行的变动或测试之前，在报警高速公路交通采取适当规程。
3. 当系统或轨道电路发生变动或调整时，对安装进行测试，保证系统操作符合要求。
C.应用设计
1.引路轨道电路通过终端转辙器和绝缘联合旁路单位控制，如有要求，必须符合制造商和铁路说明，并且不得干涉其它操作信号系统。
2. 终端转辙器的地点符合手册第3.3.10部分定义 (高速公路-铁路平交道口报警系统确定报警时间和最小引路距离计算推荐规程)，以及制造商和铁路的说明。
3.在使用重叠或相邻音频轨道电路处，整体应用设计和设施要求保证兼容性，所有设备之间，不得有相互干涉现象。
4.选择频率和轨道电路长度，采用最小轨间电阻运行。轨间电阻，包括分布电阻和集中电阻，例如在高速公路-铁路交叉道口的维护应该允许系统保持正确操作。
AREMA® C&S手册
3.3.15部分 2009
5. 在双向引路轨道电路系统应用中，引路轨道电路采用制造商指示相等或相当的应用。
6.系统仅适用于控制充分转轨部分的轨道电路。如果正常铁路运输没有提供充分转轨，意味应该考虑转轨在不利条件下，采取措施改进转轨或轨道电路。
7.轨道电路容易在60赫兹和谐频时，受到从商业电力系统的干扰。通过适当的隔离、排除摇摆的路轨联接和其它方法使干涉减到最小。存在干涉的地方，选择的系统操作频率应避免频率干扰。高能设置、过滤器和转辙器，必须符合制造商和使用铁路的指示。
8.提供辨认方式，保证可适用的极限不超过手册第11.5.1部分(电子和电子铁路信号系统设备推荐环境要求) 每个系统的组分规定的范围。
9.浪涌防护符合制造商的和铁路提供的要求，符合手册第11.2.1部分描述 (电子浪涌保护信号系统推荐一般操作)。
10.轨道引线连接应该遵照制造商和铁路的推荐。
11.符合制造商要求，DC和机电编码的DC轨道电路要求与系统反应器和过滤器隔绝。
12.电子AC和电子DC代码道电路与系统的隔绝必须符合制造商的和铁路的要求合。
D.安装
1.除非按照铁路政策经过权限批准，安装的所有作业与设计规划一致。
AREMA® C&S手册
2009 3.3.15部分
2.所有轨道电路接线的绞线必须符合制造商的指示，使相邻电路之间电感耦合减到最小。避免多余轨道电路接线，不允许盘绕接线。
3.查看轨道引线极性是否符合制造商要求。
4.在装置通电前，检查设备电源是否适用设备。检查内容包括电压、极性、容量、波纹电压和充电电池状态。
5. 在装置通电前，所有跨接线、开关和其它站点规定硬件编程必须按照要求操作。在装置初次通电后，如适用，完成站点规定软件编程。
6.程序的最初调整和设定要求符合制造商和铁路的指示。在继续进行实用测试之前，改正反常征兆。
7.引路和岛式轨道电路的校准和转辙器测试要求符合制造商和铁路的要求。
8. 遥控和/或当地交叉道口激活的额外输入和输出电路操作，如果使用，进行检查保证复核所有可适用的设计参数。
9.按照要求观察列车移动，保证系统能够充分执行轨道电路。如果需要进行开关特别测试，必须符合制造商和铁路的指示。
10.如果提供高速公路交通信号互联操作，必需进行检查保证复符合所有可适用的设计参数。
11.如果安装冗余设备，所有正常和备用单位都有进行检查和测试。如果有必要，检查传送单位的正确。
12.在信号区域，所有信号系统要求执行适用测试核实正确的操作。
13. 如铁路部门指示，检查和测试的结果，以及其它检查都必须进行记录。
Recommended Instructions for the Application, Design, Installation, Maintenance
and Test of Motion Sensitive Systems
Revised 2009 (5 Pages)
A. Purpose
This Manual Part recommends instructions for the application, design, installation, maintenance and test of motion sensitive systems conforming to Manual Part 3.1.20 (Recommended Functional/Operating Guidelines for Motion Sensitive Systems to Control Highway-Rail Grade Crossing Warning Devices). They set forth general requirements representing recommended practice.
B.General
1.Application design, installation, maintenance and testing of these motion sensitive systems (system) shall be done in accordance with manufacturer's and railroad's instructions.
2.Proper procedures shall be taken to warn highway traffic before changes or tests are made which would affect normal operation of the warning devices.
3. Tests shall be made upon installation and when changes or adjustments are made to the system or track circuit to assure that the system is
operating as intended.
C. Application Design
1. Approach track circuits shall be defined with termination shunts and insulated joint bypass units, where required, which meet manufacturer's and railroad's instructions and shall not interfere with operation of other signal systems
2. Location of the termination shunt(s) are defined by Manual Part 3.3.10 (Recommended Instructions for Determining Warning Time and Calculating Minimum Approach Distance for Highway-Rail Grade Crossing Warning Systems), as well as manufacturer's and railroad's instructions.
3. Where overlapping or adjacent audio frequency track circuits are used, overall application design and installation shall assure compatibility, without mutual interference, between all devices.
4. Frequency and track circuit length should be selected to operate with minimum ballast resistance. Ballast resistance, including distributed resistance and lumped resistance, such as at highway-rail grade
2010 AREMA -1-
AREMA® C&S Manual
Part 3.3.15 2009
crossings, should be maintained at levels which allow proper operation of the system.
5. Where systems are applied in bi-directional approach track circuit applications, approach track circuits shall be of equal length or balanced as instructed by the manufacturer for that application.
6. Systems shall be applied only to track circuits which will provide adequate shunting. If normal rail traffic will not provide adequate shunting, means
should be taken to improve shunting or track circuits which provide
shunting under adverse conditions should be considered.
7. Track circuits may be susceptible to interference from 60 Hz and harmonics induced from commercial power systems. Interference should be minimized through proper isolation, elimination of staggered rail joints and other means. Where interference exists, system operating
frequencies shall be chosen to avoid interfering frequencies. High power settings, filters and tuned shunts, as instructed by manufacturer and
railroad, should be used where required.
8. Means shall be provided to assure the applicable limits identified in Manual Part 11.5.1 (Recommended Environmental Requirements for
Electrical and Electronic Railroad Signal System Equipment) are not exceeded for each component of the system.
9. Surge protection shall be provided per manufacturer's and railroad's requirements as described in Manual Part 11.2.1 (Recommended General
Practices for Electrical Surge Protection for Signal Systems).
10. Track lead connections should comply with manufacturer's and railroad's recommendations.
11. DC and electro-mechanical coded dc track circuits shall be isolated from systems with reactors and/or filters when required by the manufacturer.
12. Electronic ac and electronic dc coded track circuits shall be isolated from systems in accordance with manufacturer's and railroad's requirements.
D. Installation
1. All aspects of the installation shall be in agreement with the design plan unless authorized by the proper authority in accordance with the railroad's policies.
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AREMA® C&S Manual
2009 Part 3.3.15
2. All track circuit wiring shall be twisted per manufacturer's instruction to minimize inductive coupling between adjacent circuits. Excess track circuit
wiring shall be avoided and coiling is prohibited.
3. Observe manufacturer requirements for track lead polarity.
4. Checks of power supply for device(s) shall be made before power is applied to device(s). Checks shall include voltage, polarity, capacity, ripple
voltage and state of charge of batteries.
5. Before applying power to device(s), all jumpers, switches and other site- specific hardware programming shall be performed as required. After
initially applying power to device(s), site-specific software programming shall be completed, if applicable.
6. Initial adjustment and/or setup procedures shall be completed per manufacturer's and railroad's instructions. Abnormal indications shall be
corrected before proceeding with in-service testing.
7. Calibration and shunt tests shall be made on each approach and each island track circuit per manufacturer's and railroad's requirements.
8. Operation of additional input and output circuits for remote and/or local crossing activation, if utilized, shall be checked to assure that they
conform to all applicable design parameters.
9. Train moves should be observed as instructed by the railroad to assure that the system is capable of operating with full approach track circuits.
Special tests for switches, if required, shall be made according to
manufacturer's and railroad's instructions.
10. Operation of highway traffic signal interconnection, if provided, shall be checked to assure that it conforms to all applicable design parameters.
11. If redundant devices are installed, all checks and tests shall be performed on both normal and standby units. Correct operation of transfer unit, if
provided, shall be checked.
12. In signaled territory, all applicable tests shall be performed to verify correct operation of the signal system.
13. Results of inspections and tests herein required and all other inspections and tests shall be recorded, as instructed by the railroad.
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