Contents
A Operation Environment Requirements A-1
A.1 Layout of Equipment Room A-3
A.2 Construction of the Equipment Room A-4
A.3 Cleanliness of the Equipment Room A-6
A.4 Temperature and Humidity A-7
A.5 Corrosive Gas Control Requirements A-8
A.6 Electromagnetic Requirements A-8
A.7 Antistatic Protection A-9
A.8 Lightening Protection and Grounding Requirements A-9
A.9 Power Supply A-11
A.10 Lighting in the Equipment Room A-15
A.11 Protection System A-15
Figures
Figure A-1 Layout of the equipment room A-3
Figure A-2 Internal partition wall of the equipment room A-5
Figure A-3 Transient noises A-14
Tables
Table A-1 Construction requirements for the equipment room A-4
Table A-2 Limits of dust diameter and density in equipment room A-6
Table A-3 Limited density of harmful gas in equipment room A-6
Table A-4 Requirements for temperature and humidity A-7
Table A-5 Corrosive gas content specification A-8
Table A-6 Electromagnetic specification A-8
Table A-7 Requirements on lightening protection and grounding A-9
Table A-8 DC charge/discharge status and voltage requirements A-12
Table A-9 DC voltage specifications A-13
Good operation environment is the key to guarantee safe operation of the OptiX optical transmission equipment. Therefore, the equipment room should not be located in any area with high temperature, heavy dust, poisonous gas, dangerous explosives, low pressure, serious vibration or big noises. Moreover, it should also be built away from the general step-down electrical substations and traction substations. While designing the project, hydrographic, geological, seismic and traffic factors should be taken into general consideration according to the communication network planning and communication technology, so as to choose the place that meets the environment design requirement.
The engineering design in terms of construction, structure, heating, ventilation, power supply, lighting and fire fighting should comply with the environment requirements for optical synchronous transmission equipment. It should also comply with China's national standards and specifications now in force related to industrial enterprise, environment protection, fire fighting, and human protection, as well as the regulations and requirements for constructing and designing buildings.
Site requirements are as follows:
n The site should be kept away from pollution sources. For sources of heavy pollution such as the smeltery and coal mine, keep a distance of 5 km. For sources of medium pollution such as the chemical, rubber and galvanization industries, keep a distance of 3.7 km. For sources of light pollution such as food and tanner industries, keep a distance of 2 km. If these sources of pollution cannot be avoided, the equipment room must be in the perennial upwind direction of the pollution sources. In addition, quality equipment room or protection product must be adopted.
n The ventilation port for air exchange of the equipment room must be kept away from the exhaust of city waste pipes, big cesspools and sewage treatment tanks. The equipment room should be kept in the positive pressure state lest the corrosive gases enter the equipment room and erode components and circuit boards.
n The equipment room should be kept away from the industrial and heating boilers.
n It is best to locate the equipment room in or above the second floor. If this requirement cannot be satisfied, the ground for equipment installation in the equipment room shall be at least 600 mm above the maximum flood level in the local record.
n The equipment room should be kept away from livestock farms. If this requirement cannot be satisfied, it should be located in the perennial upwind direction of the livestock farms.
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