ANALISA GANGGUAN PEMUTUS TENAGA MESIN CANE CUTTER I

(Studi kasus di Pabrik Gula Pakis Baru, Ds. Pakis-Tayu-Pati-Jawa Tengah)

Abstract

Age-old mill still experiencing demands to improve the quality and oroduction capacity.
Repair, renovation, addition of electrical equipment and production machines as supporting
production should be done. For electrical equipment and machinery are aged beyond safe time limit.
One of them : ACB-type circuit breaker point A, imposition of electrical equipment that exceed the time
limit on the plant safe will result in severe, be a disturbance explosion-fire resulting in total failure
production. Being burdened Cane Cutter machines I which require a large torque because there is a
very extreme narrow gap. Than the energy required large power, it takes great energy power,
electrical system and installation of electrical equipment must consider regulatory electricity and PUIL
2000 or international standards, so that the continuity of safe electric power energy. The use of electric
motor / Cane Cutter I should be considered more in the electrical system, due for chopping sugar cane,
then a very large load torque too great and the gap in the extreme, can lead to Locked Rotor. Dengan
method IEC 60 909 in 2000 to calculate the locked rotor current noise ; simplification because the
calculation does not depend on the operating status of ongoing and future load flows. With a series of
analyzes and short-circuit current using the formula of the total of 3-phase symmetrical fault current
obtained with the largest load disconnection times faster than the time settings. This fault current
Downstream ACB protected and unprotected then the Upstream ACB who do it (ACB point A), this
fault current lead to an explosion / fire in the ACB point A. ACB possible point A has exceeded the time
limit is safe and functioning of protection equipment ACB point A is Electronic or Solid state Trip Unit
/ fully adjustable, the fault current exceeds safe limits (Imax overload dan fully adjustabl