CD Skripsi

Perubahan Parameter Motor 140-Pm-17 Menggunakan Starting Autotrafo Dan Soft Starter Pada Pt Kilang Pertamina Internasional Refinery Unit Ii Dumai

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ABSTRACT
Induction motor damage frequently occurs in industrial environments. One of the
causes of failure is the use of a starting method that does not match the motor's
requirements. This research employs two starting methods, namely
autotransformer and soft starter. Both methods are tested through simulations and
calculations to compare changes in motor variables during starting. In the
autotransformer starting method, voltage transfer occurs once when the motor
approaches its nominal speed, resulting in an overshoot in current. In contrast, the
soft starter method gradually transfers voltage, preventing an immediate current
overshoot. The results indicate that the starting current with a soft starter reaches
2.8 times the nominal current, while the autotransformer method reaches 3.2 times
the nominal current. The starting torque for the soft starter is 1.17 times the nominal
torque, whereas the autotransformer achieves a starting torque of 1.5 times the
nominal torque. Although the soft starter has lower initial current and torque, it
stabilizes more quickly, thus using less energy during startup.Validation tests
comparing current against RPM for the autotransformer method show that the
current curve begins at a low voltage and switches to nominal voltage as it
approaches nominal speed. This curve aligns with findings from Bambang Prio
Hartono and statements in Stephen J. Chapman’s book. For the soft starter method,
the current curve rises slowly at first and then gradually decreases after reaching
its peak. This behavior is consistent with research by Muhammad Adam and
information from ABB's Soft Starter Handbook. Based on these observations, the
current study can be deemed valid.
Keywords: Induction Motor, Starting, Autotransformer, Soft Starter, Current,
RPM, Torque

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2007113729

Penerbit

Pekanbaru : Universitas Riau – F.TEKNIK – Elektro., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2007113729

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK ELEKTRO

Info Detail Spesifik

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Pernyataan Tanggungjawab

daus

Versi lain/terkait

Lampiran Berkas

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