NAIBAHO, DAVID PRANATA (2018) MENDETEKSI GANGGUAN PADA MOTOR CLOSED COOLING WATER FAN GAS TURBIN 2.1 DI AREA PLTGU BLOK 2 PT.PJB UP MUARA KARANG. Diploma thesis, ITPLN.
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Abstract
Pada PLTGU Blok 2 UP Muara Karang mempunyai sistem Closed Cooling Water yang merupakan system pendingin bantu yang berfungsi untuk mendinginkan peralatan pembangkit di area gas turbin seperti Lube Oil, Seal Oil, Gas H2, Purging Air Compresor, Instrument dan Service Compresor. Sistem pendingin Closed Cooling Water menggunakan fan dengan sistem tertutup sebagai media pendingin air pendingin ( Water demineralisation ) yang melewati Heat Exchanger. Kinerja yang baik dari sistem pendingin bantu ini yaitu menggunakan kehandalan dari Closed Cooling Water Fan (CCWF) agar air pendingin peralatan bantu yang menjadi panas dapat didinginkan kembali oleh fan sehingga temperatur pada peralatan pembangkit dapat dijaga dan unit PLTGU Blok 2 tetap handal. salah satu bagian yang sering mengalami gangguan adalah motor Closed Cooling Water Fan. Permasalahan yang terjadi adalah terdapat kerusakan pada bearing motor yang menyebabkan vibrasi tinggi dikarenakan lifetime bearing. Troubleshooting yang dilakukan adalah melakukan pemeliharaan corrective yaitu penggantian bearing. Pada saat motor gangguan arus motor naik dari 31 A menjadi 35 A, Setelah dilakukan pemeliharaan motor arus turun menjadi 31 A. Pemeliharaan temperature motor sebelum perbaikan pada sisi bearing sebesar 60 ºC menjadi 45ºC dan pada sisi winding 58ºC menjadi 47ºC, temperatur motor pada sisi bearing dan sisi winding mengalami penurunan. Hasil pemeliharaan tersebut, telah memenuhi pada bagian arus motor, vibrasi dan temperatur sehingga motor layak beroperasi.
In PLTGU Block 2 UP Muara Karang has Closed Cooling Water system which is an auxiliary cooling system that serves to cool the generating equipment in turbine gas area such as Lube Oil, Seal Oil, Gas H2, Purging Air Compressor, Instrument and Service Compressor. The Closed Cooling Water cooling system uses a fan with a closed system as a cooling water cooling medium (Water demineralisation) that passes through the Heat Exchanger. A good performance of this cooling system is to use the reliability of the Closed Cooling Water Fan (CCWF) so that cooling water of the hot auxiliary apparatus can be cooled back by the fan so that the temperature at the generating equipment can be maintained and the PLTGU Block 2 unit remains reliable. one part that often experience interference is Closed Cooling Water Fan motor. The problem that occurs is there is damage to the motor bearings that cause high vibration due to lifetime bearing. Troubleshooting is done to perform corrective maintenance that is replacement bearings. At motor current motor failure from 31 A to 35 A, After maintenance of motor current down to 31 A. Maintenance of motor temperature before repair at bearing side of 60 ºC to 45 º C and on winding side 58 º C to 47 º C, motor temperature at bearing side and the winding side has decreased. The result of maintenance, has been fulfilled at the motor current, vibration and temperature so that the motor is feasible to operate.
| Item Type: | Thesis (Diploma) |
|---|---|
| Uncontrolled Keywords: | Motor Closed Cooling Water Fan, Maintenance, Current, Vibration, temperature. Motor Closed Cooling Water Fan, Pemeliharaan, Arus, Vibrasi, temperatur. |
| Subjects: | Skripsi Bidang Keilmuan > Teknik Elektro |
| Divisions: | Vokasi > D3 Teknologi Listrik |
| Depositing User: | Sudarman |
| Date Deposited: | 19 Feb 2026 05:00 |
| Last Modified: | 19 Feb 2026 05:00 |
| URI: | https://repository.itpln.ac.id/id/eprint/5110 |
