Diesel Gen-set Operation Instructions
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laying, cable trench laying, tunnel laying, underwater laying and laying along the wall,
etc. Selection of cable laying method depends on engineering conditions,
environmental characteristics, cable type and quantity, and other factors and shall be
carried out by adhering to the principles of reliable operation, ease of maintenance
and economic and reasonable technology. For laying method of power cable, please
refer to GF 50217-2007 Code for Design of Cables for Electric Power Project.
9. Grounding
Grounding of electrical system must be taken into consideration during installation of
Gen-set, in order to prevent insulation of electrical equipment on the Gen-set from
being damaged or prevent electric shock, personal injuries or even death caused by
electrification of exposed current-carrying part which is usually not live when any
leakage current is produced. Besides, casing of the Gen-set shall be grounded, in
order to provide personnel protection for operators.
In order to improve reliability of electricity utilization, neutral point grounding
generally is not recommended. It will not cause an accident when one phase of
ungrounded power supply system is grounded. And, operation will not be influenced
when there is no voltage between only this phase and ground. No accident will be
caused if this can be discovered timely; if above phenomenon occurs in the power
supply system in which only the neutral point is grounded, it would cause tripping
and striking of sparks at grounding point, or even gas explosion.
Warning: incorrect grounding would cause personal injuries, or even death.
10. Other requirements
Sewage discharge: during operation and maintenance of Gen-set, water and oil
sewage needs to be discharged and sewage trench shall be designed in order to
discharge sewage;
Fire protection: equipment room shall be equipped with fire extinguishers.
