Company: Virginia Transformer Corp

Department: Engineering – Control Design

Job Location: On Site

Employment Type: Full-Time

Experience Required: 10–15+ Years

Product Range: Oil-Immersed Power Transformers up to 250 MVA, 230 kV Class

Job Summary

Virginia Transformer India Pvt. Ltd. is seeking a highly experienced and technically proficient Senior Control Design Expert – Power Transformers to lead the design, development, verification, and optimization of control systems for large oil-immersed power transformers.

The ideal candidate should possess extensive hands-on expertise in transformer control panel design, electrical schematics, wiring diagrams, protection and monitoring interfaces, cooling control systems, marshalling cabinets, instrumentation, and control logic development.

This position requires strong technical knowledge of transformer control engineering, applicable IEEE/ANSI standards, customer specifications, and North American utility requirements.

The successful candidate will independently develop, review, and validate transformer control designs while collaborating with US-based engineering, manufacturing, testing, and project management teams.

Key Responsibilities

- Transformer Control System Design

- Lead the electrical control design and development of large power transformers.
- Develop and review control schematics, wiring diagrams, interconnection diagrams, and terminal connection details.
- Design transformer control circuits, auxiliary power supplies, alarm systems, and control interfaces.
- Ensure control systems meet customer specifications, operational requirements, and applicable engineering standards.
- Review and approve control design documents and drawings within assigned engineering authority.

2. Control Panels & Marshalling Cabinets
- Design and review transformer control cabinets, marshalling boxes, and associated control panels.
- Develop panel layouts, component arrangements, terminal block configurations, and wiring schedules.
- Select control relays, contactors, terminal blocks, circuit breakers, fuses, and auxiliary components.
- Ensure proper integration of control wiring, protection interfaces, monitoring devices, and instrumentation.
- Optimize panel design for reliability, maintainability, accessibility, and manufacturing feasibility.

3. Cooling System Control & Automation
- Design control circuits for transformer cooling systems, including ONAN, ONAF, and OFAF arrangements.
- Develop automatic and manual control logic for cooling fans, oil pumps, and associated equipment.
- Design temperature-based cooling control sequences and alarm functions.
- Integrate winding temperature indicators, oil temperature indicators, and cooling equipment monitoring.
- Develop and verify control logic, interlocks, alarm sequences, and equipment protection functions.

4. Transformer Protection & Monitoring Interfaces
- Design electrical interfaces for transformer protection, alarm, and monitoring devices.
- Integrate Buchholz relays, pressure relief devices, oil-level indicators, temperature indicators, and other transformer accessories.
- Develop alarm, trip, and indication circuits according to customer requirements.
- Design interfaces for transformer protection relays, control systems, and external monitoring equipment.
- Ensure proper coordination of control circuits with transformer protection and substation systems.

5. Electrical Schematics & Wiring Design
- Prepare and review electrical schematic diagrams,



control wiring diagrams, terminal plans, and cable schedules.
- Develop wiring arrangements for transformer accessories, control panels, and monitoring equipment.
- Review cable selection, conductor sizing, terminal allocation, and auxiliary circuit protection.
- Ensure consistency between engineering drawings, bills of materials, and customer specifications.
- Maintain accurate engineering documentation and drawing revision control.

6. Control System Integration & Communication
- Coordinate transformer control system integration with customer substation control and monitoring systems.
- Develop control and monitoring interfaces for SCADA, RTU, PLC, and other automation systems where applicable.
- Support integration of intelligent electronic devices (IEDs), sensors, and transformer monitoring equipment.
- Review communication and control interface requirements, including applicable protocols such as Modbus and IEC 61850.
- Ensure compatibility between transformer-mounted equipment and external customer control systems.

7. Engineering Design Verification & Testing Support
- Conduct independent technical reviews of transformer control drawings and electrical schematics.
- Verify control logic, alarm functions, wiring connections, equipment interlocks, and protection interfaces.
- Support functional testing, continuity checks, control panel inspection, and factory acceptance testing.
- Investigate control wiring errors, equipment malfunctions, and abnormal control system operation.
- Perform root-cause analysis and recommend corrective and preventive actions.
- Coordinate with US manufacturing and testing teams to resolve control engineering issues.

8. Standards, Quality & Customer Requirements
- Ensure compliance with applicable IEEE, ANSI, IEC, NEC, and customer-specific requirements.
- Review North American utility specifications related to transformer control panels and auxiliary control systems.
- Verify compliance of control schematics, component selection, wiring arrangements, and engineering documentation.
- Support customer technical discussions, design reviews, and engineering clarifications.
- Ensure design quality, reliability, safety, and consistency across engineering deliverables.

9. Engineering Automation & Design Standardization
- Develop standardized control schematics, wiring templates, and engineering design practices.
- Improve engineering productivity through CAD automation and standardized design libraries.
- Support automation of control drawings, wiring schedules, bills of materials, and engineering documentation.
- Identify opportunities to reduce design errors, engineering cycle time, and manufacturing rework.
- Implement engineering change management and design improvement initiatives.

10. Technical Leadership & Cross-Functional Coordination
- Serve as a senior technical specialist for power transformer control design.
- Provide technical guidance and mentorship to control design engineers and CAD designers.
- Review complex customer control requirements and recommend technically sound solutions.
- Collaborate with electrical design, mechanical design,



procurement, manufacturing, quality, and testing teams.
- Coordinate engineering deliverables with US-based teams to ensure timely project completion.
- Support technical capability development and continuous improvement within the control engineering function.

Required Qualifications & Experience
- Bachelor's degree in Electrical Engineering / Electrical & Electronics Engineering (B.E./B.Tech).
- Master's degree in Electrical Engineering, Power Systems, or a related discipline preferred.
- Minimum 12–15 years of relevant experience in electrical control design, preferably in power transformer engineering.
- Strong hands-on experience in transformer control panel design, electrical schematics, wiring diagrams, and control logic.
- Experience designing control systems for large oil-immersed power transformers.
- Knowledge of control and monitoring systems for transformers rated 100 MVA and above preferred.
- Experience with 115 kV, 138 kV, and 230 kV class transformers is an added advantage.
- Robust understanding of transformer cooling control, protection interfaces, instrumentation, and auxiliary control systems.
- Experience preparing and reviewing transformer control schematics, wiring diagrams, and engineering documentation.
- Familiarity with IEEE/ANSI standards and North American utility requirements.
- Experience supporting transformer manufacturing, control panel assembly, and factory testing.
- Strong analytical, technical problem-solving, communication, and coordination skills.

Essential Technical Competencies

- Transformer control system design and engineering.
- Control panel and marshalling cabinet design.
- Electrical schematics and control wiring diagrams.
- Terminal connection diagrams and cable schedules.
- Cooling system control logic for fans and oil pumps.
- Alarm, trip, indication, and interlocking circuits.
- Transformer protection and monitoring interfaces.
- Temperature indicators, pressure relief devices, and monitoring accessories.
- SCADA, PLC, RTU, and IED integration.
- AutoCAD Electrical, EPLAN, or equivalent electrical design software.
- Engineering BOM, ERP, and document management systems.
- IEEE/ANSI standards and North American utility specifications.

Preferred Qualifications

- Experience in control design of EHV power transformers rated 150–250 MVA.
- Experience working with transformer manufacturers supplying North American utilities.
- Expertise in transformer cooling control, monitoring systems, and advanced instrumentation.
- Familiarity with IEC 61850, Modbus, and industrial communication protocols.
- Experience using AutoCAD Electrical, EPLAN, or equivalent engineering tools.
- Knowledge of transformer control panel assembly, testing, and commissioning interfaces.
- Experience in engineering design automation, standardization, and productivity improvements.
- Demonstrated ability to independently review and resolve complex control design challenges.
- Previous experience providing technical guidance to control design engineers.

Why Join Virginia Transformer?

Join a global engineering organization and contribute to the design and development of high-performance power transformers for the North American market.

Collaborate with international engineering teams and work on technically challenging transformer control and monitoring system projects.

Interested candidates can apply directly through LinkedIn.

Company Website: https://www.vatransformer.com/

📌 Senior Control Design Expert – Power Transformers (Vadodara)
🏢 Virginia Transformer
📍 Vadodara