Study of Pump Driving Motors at PERUMDA Tirta Taman in Bontang City

International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5772 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 Study of Pump Driving Motors at PERUMDA Tirta Taman in Bontang City Masing1, Hendri Rante2, Rizky Aprylianto Susilo3, Cornelius Sarri4, Wahyu Setiawan5 1,2,3,4,5 Department of Electrical Engineering, Samarinda State Polytechnic ABSTRACT: A pump driving motor is an electric motor utilized to operate water pumps. At PERUMDA Tirta Taman, Bontang City, six motors and three pumps are employed, where the submersible pump motor functions to extract raw water from wells, the feed pump transfers water to the clarifier tank, the dosing pump supplies chemical reagents, the backwash pump and root blower are used for cleaning the filtration tank, and the distribution pump delivers treated water to consumers. Field measurements show that the main protection for the submersible pump motor is a 160 A MCCB, whereas the calculated rating is 290 A. The main protection for the feed pump and backwash pump (1 and 2) in the field uses a 100 A MCCB, while calculations show 73.5 A and 72.5 A. The dosing pump motor uses a 6 A MCB in the field, with a calculated value of 3.6 A. The root blower motor utilizes a 20 A MCB in the field, while its calculated rating is 30.75 A. The distribution pumps (1 and 2) use a 125 A MCCB, whereas the calculated protection rating is 202.5 A. For the conductor sizing, a 4 × 35 mm² NYY cable is installed for the submersible motor, while its calculated ampacity is 145 A. The dosing motor uses a 3 × 2.5 mm² NYY cable with a calculated capacity of 1.8 A. The feed pump and backwash pump use a 4 × 6 mm² NYY cable, with calculated ampacities of 36.75 A and 36.25 A, respectively. The root blower uses a 4 × 2.5 mm² NYY cable with a calculated rating of 15.37 A, and the distribution pump (1 and 2) uses a 4 × 25 mm² NYY cable with a calculated rating of 101.25 A. KEYWORDS: Backwash Pump, Distribution Pump, Dosing Pump, Feed Pump, Induction Motor, Pump Driving Motor, Submersible Pump, Water Treatment Process. I. INTRODUCTION Clean water is an essential requirement for sustaining life, and therefore, its utilization must be managed properly to ensure public welfare. One of the efforts to optimize the use of water resources is conducted by PERUMDA Tirta Taman Bontang, a regional water utility company responsible for supplying clean water to local communities. The management of clean water distribution plays a crucial role in maintaining quality standards and requires reliable infrastructure to guarantee a continuous and safe water supply to consumers [1]. With technological advancements in modern industrial practices, there has been significant development in various sectors, including water supply systems. Motor efficiency, component failures, and pump leakage are among the technical issues that frequently occur in water treatment operations. As a regional water supplier, PERUMDA Tirta Taman Bontang encounters challenges in optimizing the performance of pump driving motors used for raw water treatment and distribution [2]. In the clean water treatment process, multiple pump driving motors support each stage of operation. The submersible pump extracts raw water from the well, the feed pump transfers water to the clarifier tank, the dosing pump injects chemical reagents, the backwash pump and root blower are utilized for cleaning filtration systems, and the distribution pump delivers treated water to consumers [2][3][4]. To support public demand, clean water facilities must be equipped with adequate motor-driven pumping systems to ensure effective processing and distribution. As water demand increases, the pumping system at the Water Treatment Plant (WTP) must be upgraded according to operational requirements [5]. Therefore, PERUMDA Tirta Taman Bontang serves as a suitable research location to study the operational principles, protection devices, and performance of pump driving motors. Based on the aforementioned conditions, this research is entitled: “Study of Pump Driving Motors at PERUMDA Tirta Taman in Bontang City.”. International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5773 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 II. RESEARCH METHODOLOGY A. Research Location and Schedule This study was conducted at PERUMDA Tirta Taman, Water Treatment Plant (WTP) 1 Lhoktuan, located on Slamet Riyadi Street, Lok Tuan District, North Bontang, East Kalimantan, Indonesia. The research activities were carried out from February 2024 to June 2024. B. Types and Sources of Data The data collected in this research were related to centrifugal pump driving motors installed in the booster pump system at PERUMDA Tirta Taman, WTP 1 Lhoktuan, including: 1. Literature studies from textbooks and scientific journals related to motor-driven pumping systems. 2. Technical specifications of pump motors. 3. Documentation and field observations of pump driving motors at PERUMDA Tirta Taman, Bontang City. C. Conceptual Diagram The conceptual diagram illustrates the research framework and explanation regarding the scope, limitations, and expected outcomes of the study. The conceptual flow is presented as a visual diagram that outlines the problem-solving process. Study of Pump Driver Motors Power, Voltage, Current, Efficiency, Protection Devices, and Conductors Calculation / Computation Contactors, Conductors, and Protection Devices Operation of Pump Driver Motors (Submersible, Feed Pump, Dosing, Backwash Pump, Root Blower, Distribution Pump) Determining the Capacity of Components Used on the Motor Calculation Phase Evaluating / Evaluation Control Components Determining Motor Feasibility as a Pump Driver Capacity Contained in the Motor (atau lebih umum: Motor Capacity/Rating) References from Books or Journals PERUMDA (Regional Drinking Water Company) Tirta Taman, Bontang City Influencing Factors Influence of Control Components on Motor Performance Control of Pump Driver Motor Performance Figure 1 Conceptual Diagram The Research Operational Framework serves as a graphical representation of the steps or processes within an algorithm. This flowchart is utilized to visually explain the actions or decisions involved in solving a problem. It employs specific symbols to represent various elements such as operations, inputs, outputs, and decisions as illustrated in Figure 2 Research Operational Framework. International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5774 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 Preliminary Research • Case Study • Literature Review / Literature Study Data Collection • Reference Data (atau Secondary Data) • Field Data (atau Primary Data) • Microsoft Office 2019 • Microsoft Office Visio 2019 Data Processing Calculating Component Capacity and Motor Protection Requirements s Capacity According to Standards? Adjustment of Component and Protection Capacity (Kata "Perbaikan" di sini lebih tepat diterjemahkan sebagai Adjustment atau Correction dalam konteks perhitungan teknik). NO YES Comparing Measurement and Calculation Results Finish Start Literature Review Results • Pump Driver Motor Power • Pump Motor Specifications • Submersible, Feed Pump, Dosing, Backwash Pump, Root Blower, Distribution Pump (Hanya "Distribusi" yang perlu diubah menjadi "Distribution"). Figure 2 Research Operational Framework III. RESULT AND DISCUSSION A. Operational Description of the Clean Water Treatment Process Raw water treatment at PERUMDA Tirta Taman Bontang begins with a submersible pump used to extract raw water from the well. The raw water treatment facility utilizes 7 electric motors serving as pump drivers and 1 electric motor serving as a blower driver. First, a submersible pump transfers water from the well to the cascade aerator. This process aims to eliminate gas content in the water by flowing it through a series of steps, generating air bubbles. Subsequently, these air bubbles meet the flowing water surface and release dissolved gases into the air, thereby reducing gas levels. Next, the water proceeds to the coagulation tank for the mixing of coagulants (chemicals) such as PAC, Soda Ash, and Chlorine. The purpose of this process is clarification and binding impurities contained in the water so they flocculate (clump together), making them easier to settle or discard later. A dosing pump is used to distribute these chemicals. International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5775 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 Afterward, the water is pumped by a feed pump to the clarifier tank to separate the treated water from the flocculated impurities. This is achieved by flowing water continuously so that the clumped impurities, having a heavier mass, fall and settle at the bottom of the tank. During this stage, a drainage process occurs to remove sediment accumulation; every hour, an actuator opens a valve for 2 minutes to drain the settled sludge toward the sludge drying bed. The treated water, separated from the impurities, then flows by gravity to the filtration tank for filtering. After filtration, the water flows into the reservoir holding tank. Finally, there are 2 distribution pumps used to pump water from the reservoir and distribute clean water to the community. To Sludge Drying Bed SUBMERSIBLE CASCADE AERSTOR KOAGULASI FEED PUMP DOSING PUMP HYPOCHLORITE TANK Aktuator Electric CLARIFIER 1 SAND FILTER 1 BACKWASH PUMP RESERVOIR ROOT BLOWER Aktuator Electric CLARIFIER 2 To Sludge Drying Bed SAND FILTER 2 DISTRIBUSI PUMP DISTRIBUSI Figure 3. Clean Water Treatment Design Layout B. Operational Description During Preventive State Preventive measures are implemented to maintain the quality of water produced by PERUMDA Tirta Taman Bontang and to ensure that the water is safe and suitable for use. Consequently, a preventive process is conducted to maintain the cleanliness of the sand filter tank and prevent damage to the filter media. This preventive maintenance is executed using two backwash pumps and one blower through a process known as backwashing. The procedure begins with the operator closing the valve from the clarifier tank and opening the valve leading to the sludge drying bed. Next, the blower is activated for 35 minutes to dislodge impurities adhering to the tank and filter media using air pressure. After 35 minutes, the backwash pump is activated for another 35 minutes to flow water from the reservoir (from the bottom) upwards through the filter media, thereby detaching dirt particles from the media. During this backwash process, the dirty water carrying the debris is flushed out of the filter into the drainage channel towards the sludge drying bed. International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5776 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 Sludge Drying Bed RESERVOIRSAND FILTER Figure 4. Preventive Process Diagram C. Working Principles of Pump Driver Motors The following are the working principles of the driver motors for the submersible pump, dosing pump, feed pump, root blower, backwash pump, and distribution pump: Berikut adalah terjemahan teks tersebut ke dalam bahasa Inggris dengan gaya bahasa teknis yang formal. 1) Submersible Pump This submersible pump utilizes a 3-phase Grundfos MMS8000 motor with a capacity of 55 kW, a maximum speed range of 28902900-2910 rpm, and a frequency of 50 Hz. The motor is submerged in a well at a depth of 80 meters below ground level and is capable of pumping 25 liters of water per second. This pump motor operates continuously (non-stop) for a period of 3 months, after which scheduled maintenance is performed. The function of this pump motor is to transfer water from the well to the coagulation holding tank located at PERUMDA Tirta Taman Bontang City, WTP 1 Lhoktuan Branch. The water is conveyed through an 8-inch iron pipe spanning a distance of 40 meters from the well. This process ensures the water undergoes several treatment stages to become suitable for distribution and daily use by the community of Bontang City. 2) Dosing Pump The dosing pump utilizes a 3-phase Milton Roy YSJ7114 motor with a capacity of 0.25 kW, a maximum speed of 1400 rpm, and a frequency of 50 Hz. The motor is capable of delivering a flow rate of 7 liters per hour.This pump motor operates continuously for 24 hours and undergoes maintenance only in the event of a breakdown. The function of this pump motor is to transfer chemical solutions to the coagulation area before the water enters the clarifier holding tank at PERUMDA Tirta Taman Bontang City, WTP 1 Lhoktuan Branch. The solution is conveyed through a 3-inch PVC pipe spanning a distance of 10 meters from the coagulation point. 3) Feed Pump The feed pump utilizes a 3-phase TITAN TM-160M2-2 motor with a capacity of 15 kW, a maximum speed of 2930 rpm, and a frequency of 50 Hz.This motor is employed to pump water from the coagulation unit to the clarifier, transferring water from the initial treatment stages to the subsequent stages of the clean water treatment process. The pump motor operates continuously for 24 hours, delivering a flow rate of 30 liters per second through an 8-inch iron pipe. Maintenance is performed only when a leak is detected in the pump area. 4) Backwash Pump and Root Blower The Root Blower utilizes a 3-phase TECO AEEBKB motor with a capacity of 5.5 kW, a maximum speed of 1450 rpm, and a frequency of 50 Hz.Similarly, the Backwash Pump utilizes a 3-phase TECO AEEBKB motor with a capacity of 15 kW, a maximum speed of 1450 rpm, and a frequency of 50 Hz.Function and Operation: The Root Blower motor functions to generate the pressurized air required to clean impurities from the filter media during preventive maintenance. Meanwhile, the Backwash Pump is employed during preventive maintenance to deliver high-pressure water into the filtration media for the backwashing process. Preventive maintenance is performed using the backwash pump and blower through a procedure known as "backwashing." The process begins by rotating the water distribution valve until it is fully closed. Next, the blower is activated for 35 minutes to dislodge impurities adhering to the tank and filter media using air pressure. Following this, the backwash pump is activated for 35 minutes to flow water from the reservoir upwards (from bottom to top) through the filter media, effectively detaching dirt particles. During this backwash process, the dirty water containing debris is flushed out of the filter into the drainage channel leading to the sludge drying bed. International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5777 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 5) Distribution Pump The Distribution Pump utilizes a 3-phase Elektrim motor with a capacity of 45 kW, a maximum speed of 2968 rpm, and a frequency of 50 Hz.This motor operates by generating mechanical energy, which is then used to rotate the pump impeller, creating the flow and pressure necessary for water distribution. The pump motor operates continuously for 24 hours, distributing a daily water volume of 2,416 m³. Maintenance is performed only when a leak is detected in the pump area. The function of this motor is to drive the water distribution pump, transferring water from the reservoir to consumers through a 12-inch HDPE pipe, ensuring smooth distribution and providing water suitable for the daily needs of the Bontang City community. D. Calculation of Electric Motor Protection The calculation of the electric motor protection capacity is based on Equations (2.13) and (2.14) Protection for squirrel cage motor = 250% times I_n or 2.5 times I_n Overload protection = I_n times (110% - 115%) 1) Submersible Pump Motor Protection Given an induction motor with a power capacity of 55 kW operating at a voltage of 380 V and a nominal current of 116 A, the calculation to determine the capacity of the main protection device is as follows: Cicuit breaker = 250% x In = 250% x 116 A = 290A For a circuit breaker requirement of 290 A, a 250 A MCCB can be selected. However, according to field data, a 160 A MCCB is currently utilized. Next, to determine the Thermal Overload Relay (TOR), Equation (2.16) is utilized as follows: TOR = In x (110% - 115%) TOR = 116A x (1,10 0 1,15) TOR = 127,6 A – 133,4 A The overload protection (TOR) can be set within the range of 127.6 – 133.4 A, whereas the unit installed on-site has a range of 110 – 140 A. 2) Protection motor feed pump Given an induction motor with a power capacity of 15 kW operating at a voltage of 380 V and a nominal current of 29.4 A, the calculation to determine the capacity of the main protection device is as follows: Circuit breaker = 250% x In = 250% x 29,4A = 73,5A For a circuit breaker requirement of 73.5 A, a 63 A MCB can be selected, whereas according to field data, a 100 A MCCB is utilized. Next, to determine the TOR, Equation (2.16) is utilized as follows TOR = In x (110% - 115%) TOR = 29,4A x (1,10 – 1,15%) TOR = 32,34A – 33,81A The overload protection (TOR) can be set within the range of 32.34 – 33.81 A, whereas the unit installed on-site has a range of 30 – 38 A. 3) Protection motor dosing pump Given an induction motor with a power capacity of 0.25 kW operating at a voltage of 380 V and a nominal current of 1.44 A, the calculation to determine the capacity of the main protection device is as follows: Circiut Breaker = 250% × 𝐼𝑛 = 250% × 1,44 A = 3,6 A For a circuit breaker requirement of 3.6 A, a 6 A MCB can be selected; according to field data, a 6 A MCB is also utilized. Next, to determine the TOR, Equation (2.16) is utilized as follows: TOR = In x (110% – 115%) TOR = 1,44 A x (1,10 – 1,15%) International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5778 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 TOR = 1,58 A – 1,65 A The overload protection (TOR) can be set within the range of 1.58 – 1.65 A, whereas the unit installed on-site has a range of 1 – 1.7 A. 4) Backwash motor pump 1 and 2 Given an induction motor with a power capacity of 15 kW operating at a voltage of 380 V and a nominal current of 29.0 A, the calculation to determine the capacity of the main protection device is as follows: Circuit Breaker = 250% × 𝐼𝑛 = 250% × 29,0 A = 72,5 A For a circuit breaker requirement of 72.5 A, a 63 A MCB can be selected, whereas according to field data, a 100 A MCCB is utilized. Next, to determine the TOR, Equation (2.16) is utilized as follows: TOR = In x (110% – 115%) TOR = 29,0 A x (1,10 – 1,15%) TOR = 31,9 A – 33,35 A The overload protection (TOR) can be set within the range of 31.9 – 33.35 A, whereas the unit installed on-site has a range of 30 – 38 A. 5) Root blower motor Given an induction motor with a power capacity of 5.5 kW operating at a voltage of 380 V and a nominal current of 12.3 A, the calculation to determine the capacity of the main protection device is as follows: Circuit Breaker = 250% × 𝐼𝑛 = 250% × 12,3 A = 30,75 A For a circuit breaker requirement of 30.75 A, a 25 A MCB can be selected, whereas according to field data, a 20 A MCB is utilized. Next, to determine the TOR, Equation (2.16) is utilized as follows: TOR = In x (110% – 115%) TOR = 12,3 A x (1,10 – 1,15%) TOR = 13,53 A – 14,14 A The overload protection (TOR) can be set within the range of 13.53 – 14.14 A, whereas the unit installed on-site has a range of 12 – 18 A. 6) Distribution motor pump 1 Given an induction motor with a power capacity of 45 kW operating at a voltage of 380 V and a nominal current of 81.0 A, the calculation to determine the capacity of the main protection device is as follows: Circuit Breaker = 250% × 𝐼𝑛 = 250% × 81.0 A = 202,5 A For a circuit breaker requirement of 202.5 A, a 200 A MCCB can be selected, whereas according to field data, a 125 A MCCB is utilized. Next, to determine the TOR, Equation (2.16) is utilized as follows: TOR = In x (110% – 115%) TOR = 81,0 A x (1,10 – 1,15%) TOR = 89,1 A – 93,15 A The overload protection (TOR) can be set within the range of 89.1 – 93.15 A, whereas the unit installed on-site has a range of 80 – 104 A. E. Determining Contactor Capacity To calculate the capacity of the contactor used, Equation (2.15) is utilized. K = 115% x In 1) Submersible Pump Motor Contactor The following is the calculation for the contactor capacity of the Submersible Pump Motor: International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5779 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 In = 116 A K = 115% x 116 A = 133,4 A From the calculation results, a contactor current capacity of 133.4 A is obtained; therefore, a capacity of 150 A can be selected, whereas according to field data, the contactor capacity utilized is 150 A. 2) Feed Pump Motor Contactor The following is the calculation for the contactor capacity of the Feed Pump Motor: In = 29,4 A K = 115% x 29,4 A = 33,81 A From the calculation results, a contactor current capacity of 33.81 A is obtained; therefore, a capacity of 40 A can be selected, whereas according to field data, the contactor capacity utilized is 40 A. 3) Dosing Pump Motor Contactor The following is the calculation for the contactor capacity of the Dosing Pump Motor: In = 1,44 A K = 115% x 1,44 A = 1,65 A From the calculation results, a contactor current capacity of 1.65 A is obtained; therefore, a capacity of 9 A can be selected, whereas according to field data, the contactor capacity utilized is 9 A. 4) Backwash Pump Motor Contactor 1 and 2 The following is the calculation for the contactor capacity of Backwash Pump Motors 1 and 2: In = 29,0 A K = 115% x 29,0 A = 33,35 A From the calculation results, a contactor current capacity of 33.35 A is obtained; therefore, a capacity of 40 A can be selected, whereas according to field data, the contactor capacity utilized is 40 A. 5) Root Blower Motor Contactor The following is the calculation for the contactor capacity of the Root Blower Motor: In = 12,3 A K = 115% x 12,3 A = 14,14 A From the calculation results, a contactor current capacity of 14.14 A is obtained; therefore, a capacity of 18 A can be selected, whereas according to field data, the contactor capacity utilized is 18 A. 6) Distribution Pump Motor Contactor 1 and 2 The following is the calculation for the contactor capacity of Distribution Pump Motors 1 and 2: In = 81,0 A K = 115% x 81,0 A = 93,15 A From the calculation results, a contactor current capacity of 93.15 A is obtained; therefore, a capacity of 115 A can be selected, whereas according to field data, the contactor capacity utilized is 115 A. F. Calculation of Electric Motor Conductors To calculate the electric motor conductor size based on Equation (2.12). Current Carrying Capacity = 125% x In 1) Submersible Pump Motor Conductor The following is the calculation for the Submersible Pump Motor conductor size: In = 116 A KHA = 125% x 116 A International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5780 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 = 145 A After obtaining the conductor's Current Carrying Capacity value based on the calculation from Equation (2.14), the conductor selected according to Table 2.2 is the NYY 4 x 35 mm² cable. Whereas the conductor utilized on-site is the NYY 4 x 35 mm² cable. 2) Feed Pump Motor Conductor The following is the calculation for the Feed Pump Motor conductor size: In = 29,4 A KHA = 125% x 29,4 A = 36,75 A After obtaining the conductor's Current Carrying Capacity value based on the calculation from Equation (2.14), the conductor selected according to Table 2.2 is the NYY 4 x 6 mm² cable. Whereas the conductor utilized on-site is the NYY 4 x 6 mm² cable 3) Dosing Pump Motor Conductor The following is the calculation for the Dosing Pump Motor conductor size: In = 1,44 A KHA = 125% x 1,44 A = 1,8 A After obtaining the conductor's Current Carrying Capacity value based on the calculation from Equation (2.14), the conductor selected according to Table 2.2 is the NYY 3 x 2.5 mm² cable. Whereas the conductor utilized on-site is the NYY 3 x 2.5 mm² cable. 4) Backwash Pump Motor Conductor 1 and 2 The following is the calculation for the conductor size of Backwash Pump Motors 1 and 2: In = 29,0 A KHA = 125% x 29,0 A = 36, 25 A After obtaining the conductor's Current Carrying Capacity value based on the calculation from Equation (2.14), the conductor selected according to Table 2.2 is the NYY 4 x 6 mm² cable. Whereas the conductor utilized on-site is the NYY 4 x 6 mm² cable. 5) Root Blower Motor Conductor The following is the calculation for the Root Blower Motor conductor size: In = 12,3 A KHA = 125% x 12,3 A = 15,37 A After obtaining the conductor's Current Carrying Capacity value based on the calculation from Equation (2.14), the conductor selected according to Table 2.2 is the NYY 4 x 2.5 mm² cable. Whereas the conductor utilized on-site is the NYY 4 x 2.5 mm² cable. 6) Distribution Pump Motor Conductor 1 and 2 The following is the calculation for the conductor size of Distribution Pump Motors 1 and 2: In = 81,0 A KHA = 125% x 81,0 A = 101,25 A After obtaining the conductor's Current Carrying Capacity value based on the calculation from Equation (2.14), the conductor selected according to Table 2.2 is the NYY 4 x 25 mm² cable. Whereas the conductor utilized on-site is the NYY 4 x 25 mm² cable. G. Calculation of Pump Capacity and Water Discharge The following is the calculation of the Submersible Water Pump capacity: 1) Submersible Pump Given a submersible pump with a flow rate capacity of 25 L/s and a pipe size of 8 inches (PDAM standard), the determination of the pipe cross-sectional area is as follows: Pipe Cross-Sectional Area = A = π 4 D² A = 3,14 4 (0,2032)² A = 0,032 m2 International Journal of Current Science Research and Review ISSN: 2581-8341 Volume 08 Issue 11 November 2025 DOI: 10.47191/ijcsrr/V8-i11-34, Impact Factor: 8.048 IJCSRR @ 2025 www.ijcsrr.org 5787 *Corresponding Author: Wahyu Setiawan Volume 08 Issue 11 November 2025 Available at: www.ijcsrr.org Page No. 5772-5787 21. J. Panjaitan, "Design and Construction of Automatic Genset Using Contactors with 12 V, 50 Ah Battery Power," Design and Manufacture of Automatic Pest Sprayer on Rice Plants with SMS Gateway Information Based on Arduino, pp. 1–12, 2019. 22. A. Putra Harahap, W. Dwiono, and N. Harpawi, "SMS-Based Power Source Switching Hardware Circuit," Journal of Industrial Electronics, vol. 5, pp. 40–49, 2019. Cite this Article: Masing, Rante, H., Susilo, R.A., Sarri, C., Setiawan, W. (2025). Study of Pump Driving Motors at PERUMDA Tirta Taman in Bontang City. International Journal of Current Science Research and Review, 8(11), pp. 5772-5787. DOI: https://doi.org/10.47191/ijcsrr/V8-i11-34