Lightning: Anti-fire and lightning protection are necessary for paper factory.Because Raw material and product such as pulp and paper are flammability and explosive.
Arc fault: Paper production is characterized by huge loading in paper industry , and easy to cause arc fault and fire accident . there are two mainly reasons for triggering fire . one is damage of lay of insulation of transformer's winding . two is faulty connection which is principal factor causing high-temperature arc, and fire pulp and paper around faulty point.
1 Fire fast spreading: pulp and paper through the equipment on production line have lots of scraps . those of them are flammability and explosive.
2 Many fire points : dust and scraps come from process of paper production will be existed everywhere.meanwhile, In mill,high-temperature and bad ventilation system in steps of pressing , rolling,cutting etc , it is difficult for anti-fire.
Harmonic and three phase unbalance : Paper printing companies use a large number of new technology equipment and electrical installations, equipped with frequency control device; Processing chemical agents, its production by electrolytic technology ; gas power in the extensive use of the project,lead to the decline of power quality and increase equipment loss and damage electrical equipment in power supply and distribution system.
1 Decreasing the reliability of circuit and transformer , increasing loss and heat.
2 Lots of high-frequency harmonic accumulated till the harmonic amplified in devices of reactive power compensation, so that it trips breaker, and destroys capacitors frequently.
3 Affect the electricity meter and interfere weak electricity system.
4 Affect the generator , low voltage switch equipment and leakage circuit breaker.