SAGEM 3P@C

 

 

The basic requirement of grounding is that the grounding

 

 

resistance should be little. During the engineering design, low-

 

 

resistance grounding materials should be applied with sufficient

 

 

length, width and thickness to ensure that 3P@C 4450E meets

 

 

the grounding requirements. Ground piles can be buried deeply

 

 

under the ground to form a flat surface there, so as to ensure low

 

 

resistance for various frequencies. As the type of soil impacts the

 

prompt

grounding resistance most, chemical agents (resistance-reducing

 

 

agents) can be applied around the ground pile to reduce

 

 

resistance for areas where the soil conditions are poor.

 

 

Furthermore, the temperature and humidity of soil also have

 

 

impact on the grounding resistance and this should also be

 

 

considered during the engineering design.

3.1.7.Anti-interference Requirements

Any interfering sources from the equipment or outside the applied system may affect the equipment in the capacitance coupling, inductance coupling, electromagnetic wave radiation, common resistance (including the grounding system) and the conduction mode of conducting wire (power supply line, signaling line and output wire). For this reason, note that:

„Take effective power anti-interference measures for the power supply system.

„Do not combine the working ground of 3P@C 4450E with the grounding device or the lightning grounding device of the power equipment but keep the distance between them as far as possible.

„Keep far away from any large-power radio transmitting station, radar transmitting station and high frequency strong current equipment.

„Take electromagnetic shielding measures when necessary.

3.1.8.Other Requirements

„The indoor should be bright enough for operation, preferably 500 ~ 750 lumen/m2.

„The equipment room should be attended by designated persons or have other burglar-proof measures.

„The water supply and draining systems of the equipment room should be designed in accordance with the normal water consumption and fire fighting regulations, and sufficient fire protection devices should be equipped.

3P@C Installation Manual

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SAGEM SA