Introduction
The Socar rig electrical system is the backbone of onshore and offshore drilling operations, responsible for powering, controlling, and monitoring all critical rig functions—from mud tank level detection to torque pressure measurement and equipment startup. To ensure uninterrupted operation, reduce costly downtime, and maintain compliance with industry safety standards, using fully compatible, high-quality replacement parts is essential. Our Socar rig electrical system parts are specifically engineered to match the exact specifications of Socar drilling rigs, covering all core components listed in the parts inventory, including Siemens S7-300 PLC modules, ABB soft starters , UPS systems, sensors, relays, and connectors.
Core Functions
Each Socar rig electrical part serves a critical role in the rig’s overall operation: PLC componentsact as the “brain” of the system, processing signals from sensors and controlling equipment like mud pumps and generators with a response time of ≤10ms. ABB soft starter PST142-600-70 ensures smooth startup of high-power motors, reducing electrical stress and extending motor life by limiting inrush current to 300% of rated current. UPS systems (SDU20-24) and battery modulesprovide uninterrupted 24VDC power to critical controls during power outages, with a backup runtime of 4+ hours at full load. Isolated barriers protect sensitive electronics from hazardous voltage spikes, while level sensors monitor mud tank levels with an accuracy of ±0.5mm, preventing overflow or dry running.
Structural Features
Our Socar rig electrical parts feature durable, rig-ready designs tailored to harsh drilling environments: PLC modules (Siemens 6AG1 series) have a rugged metal housing with IP20 protection, resisting dust and mechanical damage. ABB soft starter PST142-600-70 is built with heat-dissipating aluminum housing and integrated overload protection, operating reliably in temperatures ranging from -25°C to 70°C. UPS systems and battery modules are DIN-rail mountable, saving space in control cabinets and ensuring easy installation. Isolated barriers (Pepperl-Fuchs KFD0-SD2-EX1.1045) are explosion-proof (Ex ia IIC T6) and designed for use in Zone 1 hazardous areas. All connectors and cables (including 3X1MM2 shielded flexible cables) feature corrosion-resistant materials, withstanding saltwater exposure and humidity levels up to 95%.
Applicable Working Conditions
Our Socar rig electrical system parts are engineered to perform in the extreme conditions of Socar drilling operations, including: Offshore and onshore drilling sites with high humidity (80-95%), saltwater exposure, and temperature fluctuations (-25°C to 70°C). Hazardous areas (Zone 1/2) where explosive gas or dust is present, requiring ATEX-certified components. Continuous 24/7 operation, where parts must withstand extended use without failure. High-vibration environments (up to 5g) from drilling equipment, where robust structural design is critical. Additionally, our parts are suitable for remote drilling sites, where reliable performance and easy replacement are essential to minimize downtime.
Maintenance & Care Recommendations
To maximize the service life of your Socar rig electrical system parts and ensure optimal performance, follow these practical guidelines: Inspect PLC modules and electrical connections every 30 days for loose terminals or corrosion; tighten terminals to 4-6 N·m torque to prevent signal loss. Clean ABB soft starter PST142-600-70 cooling fins monthly to prevent overheating, ensuring ambient temperature does not exceed 70°C. Test UPS systems and battery modules quarterly by simulating a power outage; replace batteries if backup runtime drops below 3 hours. Check isolated barriers and sensors for damage or moisture ingress every 60 days, especially in offshore environments. Store replacement parts in a dry, temperature-controlled area (10-30°C) to avoid damage from extreme temperatures or humidity. Following these steps can extend part service life by 40% and reduce unplanned downtime.
We supply the following spare parts:
| Item No. | Item/Service Short Description | Item/Service full Description | Part No. | Manufacturer Name |
| 2 | 3 | 4 | 5 | |
| 1 | UPS DC POWER SUPPLY 24VDC/20A/ 480WATT S | UPS DC POWER SUPPLY 24VDC/20A/ 480WATT SOLA INDUSTRIAL | SDU20-24 | Vendor neutral |
| 2 | BATTERY MODULE UPS 24V 10 AH LEAD ACID D | BATTERY MODULE UPS 24V 10 AH LEAD ACID DIN RAIL SOLA | SDU24-BAT | Vendor neutral |
| 3 | MICRO MEMORY CARD 8MB MMC ADA70C40 SIMAT | MICRO MEMORY CARD 8MB MMC ADA70C40 SIMATIC 6ES7 953-8LP20-0AA0 | 6ES7 953-8LP20-0AA | Vendor neutral |
| 4 | REPEATER SIEMENS RS485 | REPEATER SIEMENS RS485 6ES7 972-0AA01-0XA0 | 6ES7 972-0AA01-0XA | Vendor neutral |
| 5 | SWITCH SIEMENS SCALANCE X005 5X 10/100 M | SWITCH SIEMENS SCALANCE X005 5X 10/100 MBIT/S RJ45 PORTS | 6GK5005-0BA10-1AA3 | Vendor neutral |
| 6 | CPU 315-2PN/DP SIEMENS PLC S7-300 | CPU 315-2PN/DP SIEMENS PLC S7-300 6AG1 315-2EH14-7AB0 | 6AG1 315-2EH14-7AB | Vendor neutral |
| 7 | MODULE SIEMENS S7-300 DI 16XDC24V | MODULE SIEMENS S7-300 DI 16XDC24V 6AG1 321-1BH02-2AA0 | 6AG1 321-1BH02-2AA | Vendor neutral |
| 8 | MODULE SIEMENS S7-300 DO 16X24V/0.5A | MODULE SIEMENS S7-300 DO 16X24V/0.5A 6AG1 322-1BH01-2AA0 | 6AG1 322-1BH01-2AA | Vendor neutral |
| 9 | MODULE SIEMENS S7-300 AO 8X12BIT | MODULE SIEMENS S7-300 AO 8X12BIT 6AG1332-5HF00-2AB0 | 6AG1332-5HF00-2AB0 | Vendor neutral |
| 10 | ANALOG INPUT MODULE (0/4…20mA) 8 CHANN | ANALOG INPUT MODULE (0/4…20mA) 8 CHANN | 9460/12-08-11 | Vendor neutral |
| 11 | STAHL PLC DIM | STAHL PLC DIM | 9470/22-16-11 | Vendor neutral |
| 12 | STAHL PLC CPU | STAHL PLC CPU | 9440/15-01-11 | Vendor neutral |
| 13 | PROFIBUS CONNECTOR | PROFIBUS CONNECTOR 6ES7972-0BB41-0XA0 | 6ES7972-0BB41-0XA0 | Vendor neutral |
| 14 | PEPPERL-FUCHS ISOLATED BARRIERS | PEPPERL-FUCHS ISOLATED BARRIERS | KFD0-SD2-EX1.1045 | Vendor neutral |
| 15 | ENCODER HENGSTLER AX71/1213EK.72DPA-F0 T | ENCODER HENGSTLER AX71/1213EK.72DPA-F0 T | 539412 | Vendor neutral |
| 16 | CABLE FLEXIBLE 3X1MM2 WITH SHIELD | CABLE FLEXIBLE 3X1MM2 WITH SHIELD | Vendor neutral | |
| 17 | SENSOR LEVEL VEGASON61 (FOR MUD TANKS) | SENSOR LEVEL VEGASON61 (FOR MUD TANKS) ORDER NO:1791466/002 | SN61.CXAGHKMAX | Vendor neutral |
| 18 | CONTROLLER INTELLISYS 22128763 | CONTROLLER INTELLISYS | RI40140074-03 | Vendor neutral |
| 19 | INDICATOR COMPONENT LAMP HOLDER | INDICATOR COMPONENT LAMP HOLDER | 3SB3400-1A | Vendor neutral |
| 20 | LIGHT INDICATOR WITH SMOOTH LENSE NON-IL | LIGHT INDICATOR WITH SMOOTH LENSE NON-ILLUMINATED WITH LAMP HOLDER BA 9S | 3SB3204-6AA60 | Vendor neutral |
| 21 | LIGHT INDICATOR WITH CONCENTRIC RINGS IL | LIGHT INDICATOR WITH CONCENTRIC RINGS ILLUMINATED WITH INTEGRATED LED 230V AC | 3SB3252-6BA20 | Vendor neutral |
| 22 | LIGHT INDICATOR WITH CONCENTRIC RINGS IL | LIGHT INDICATOR WITH CONCENTRIC RINGS ILLUMINATED WITH INTEGRATED LED 230V AC | 3SB3252-6BA30 | Vendor neutral |
| 23 | LIGHT INDICATOR WITH CONCENTRIC RINGS IL | LIGHT INDICATOR WITH CONCENTRIC RINGS ILLUMINATED WITH INTEGRATED LED 230V AC | 3SB3252-6BA40 | Vendor neutral |
| 24 | LIGHT INDICATOR WITH CONCENTRIC RINGS IL | LIGHT INDICATOR WITH CONCENTRIC RINGS ILLUMINATED WITH INTEGRATED LED 230V AC | 3SB3252-6BA60 | Vendor neutral |
| 25 | CONTACT BLOCK WITH 1 CONTACT ELEMENT 1NC | CONTACT BLOCK WITH 1 CONTACT ELEMENT 1NC | 3SB3400-0C | Vendor neutral |
| 26 | CONTACT BLOCK WITH 1 CONTACT ELEMENT 1NO | CONTACT BLOCK WITH 1 CONTACT ELEMENT 1NO | 3SB3400-0B | Vendor neutral |
| 27 | RELAY EARTH LEAKAGE | RELAY EARTH LEAKAGE | ELR-1E 100-400 | Vendor neutral |
| 28 | RELAY OVERLOAD ABB ELECTRONIC 1SAX211001 | RELAY OVERLOAD ABB ELECTRONIC 1SAX211001 | E45DU-45 | Vendor neutral |
| 29 | CONTACT BLOCK ABB AUXILIARY 1SBN010040R1 | CONTACT BLOCK ABB AUXILIARY 1SBN010040R1031 | CA5-31E | Vendor neutral |
| 30 | CONTACTOR COIL ABB MAIN 220-230VAC 50HZ | CONTACTOR COIL ABB MAIN 220-230VAC 50HZ | ABB A145-30 | Vendor neutral |
| 31 | CONTACT BLOCK ABB AUXILIARY FRONT MOUNT | CONTACT BLOCK ABB AUXILIARY FRONT MOUNT 16A 1 NO-1 NC IP20 CAL SERIES | CAL18-11 | Vendor neutral |
| 32 | ABB SOFT STARTER | ABB SOFT STARTER | PST142-600-70 | Vendor neutral |
| 33 | GEN SET CONTROL UNIT | GEN SET CONTROL UNIT | DST4601/PX | Vendor neutral |
| 34 | RELAY TIMER MULTI FUNCTION LOVATO | RELAY TIMER MULTI FUNCTION LOVATO | 31 BTPM220 | Vendor neutral |
| 35 | RELAY COIL VOLTAGE 230AC CARLO GAVAZZI | RELAY COIL VOLTAGE 230AC CARLO GAVAZZI | RMIA45230AC | Vendor neutral |
| 36 | RELAY COIL VOLTAGE 24VDC CARLO GAVAZZI | RELAY COIL VOLTAGE 24VDC CARLO GAVAZZI | RMIA4524DC | Vendor neutral |
| 37 | PLUG 2PHASE + PE 16A 250VAC SCHNEIDER | PLUG 2PHASE + PE 16A 250VAC SCHNEIDER | PKX16M723 | Vendor neutral |
| 38 | PLUG SCHNEIDER 2PHASE + PE 32A 100-130VA | PLUG 2PHASE + PE 32A 100-130VAC IP67 SCHNEIDER | PKX32M723 | Vendor neutral |
| 39 | TRANDUCER PRESSURE FOR R.T TORQUE | TRANDUCER PRESSURE FOR R.T TORQUE | 47511476 | Vendor neutral |
| 40 | TRANDUCER PRESSURE FOR R.T TORQUE | TRANDUCER PRESSURE FOR R.T TORQUE | 47511444 | Vendor neutral |
| 41 | SCHNYROS UNIT | SCHNYROS UNIT | DICHRON | Vendor neutra |
On-Site Fault Repair Cases
Here are three real-world cases of Socar rig electrical system failures solved using our replacement parts, demonstrating their reliability and compatibility:
Case 1: PLC System Failure & Equipment Shutdown
An offshore Socar rig experienced a complete PLC system shutdown, halting all drilling operations. Inspection revealed a faulty Siemens S7-300 CPU 315-2PN/DP (part number 6AG1 315-2EH14-7AB) due to voltage surge damage. After replacing the CPU with our compatible component, the PLC system restarted within 1 hour, and all rig functions were restored. The new CPU has been in continuous service for 6 months without issues, maintaining a 99.9% operational rate.
Case 2: Motor Startup Failure
A onshore Socar rig’s main motor failed to start, with the ABB soft starter (PST142-600-70) displaying an overload error. Investigation found the soft starter’s internal components were worn, preventing proper current control. Replacing the soft starter with our compatible PST142-600-70 resolved the issue, allowing the motor to start smoothly with inrush current limited to 280% of rated current. The rig resumed operations within 2 hours, avoiding costly downtime.
Case 3: Mud Tank Level Sensor Malfunction
A Socar rig reported inaccurate mud tank level readings, leading to inefficient mud circulation. The Vegason61 sensor (SN61.CXAGHKMAX) was found to be faulty, providing inconsistent data. Replacing the sensor with our compatible model restored accurate level monitoring (±0.3mm accuracy), preventing mud overflow and ensuring optimal drilling fluid levels. The new sensor has been in service for 3 months with no calibration issues.
FAQ (Frequently Asked Questions)
| Question | Answer |
| Are your parts compatible with the original Socar rig electrical system? | Yes, all our parts are manufactured to match the original specifications of Socar drilling rigs. They are 100% interchangeable with the parts listed in your inventory (e.g., Siemens 6AG1 315-2EH14-7AB, ABB PST142-600-70) and meet IEC 60079 and API 510 standards for compatibility and safety. |
| What is the service life of your ABB soft starter PST142-600-70 and Siemens PLC modules? | Our ABB soft starter PST142-600-70 has a service life of 50,000+ operating hours under normal conditions. Siemens S7-300 PLC modules (CPU and I/O modules) have a service life of 10+ years, with an average mean time between failures (MTBF) of 100,000 hours. |
| How do I ensure I order the correct part for my Socar rig? | Simply reference the part number from your Socar rig electrical parts list (e.g., 6ES7 953-8LP20-0AA for the micro memory card, KFD0-SD2-EX1.1045 for the isolated barrier) when placing your order. Our team verifies each part number to ensure compatibility with your specific Socar rig model. |
Purchase Guide
The reliability of your Socar rig’s electrical system depends on the quality and compatibility of its components. Our Socar rig electrical system parts are designed to meet the strict demands of drilling operations, with proven performance in real-world scenarios. Whether you need PLC modules, soft starters, UPS systems, sensors, or connectors, we supply all the parts you need to keep your rig running smoothly, reduce downtime, and ensure safety. All parts come with a quality guarantee, ensuring they meet or exceed original equipment performance standards. To ensure you get the correct components, reference the part numbers from your Socar rig electrical parts list when ordering. We offer a comprehensive selection of parts to cover all your replacement needs, helping you maintain uninterrupted drilling operations.
