RMU Testing Underway in DPDC-TBEA Project – Powering Dhaka’s Underground Electrical Future
JRC Powertech is proud to contribute to one of Dhaka’s most ambitious electrical infrastructure projects — the DPDC-TBEA underground cabling initiative. Our team is currently working on the testing and commissioning of Ring Main Units (RMUs) at a key project site near Abahani Club Field, ensuring the safe and reliable operation of critical electrical distribution systems.
This blog post explores our on-site activities, the importance of RMU testing, and how our efforts are directly shaping Dhaka’s transition to a modern, efficient underground power grid.
🚧 Project Overview: DPDC-TBEA Underground Power Distribution Project
The Dhaka Power Distribution Company (DPDC), in collaboration with Chinese electrical giant TBEA, has launched a transformative project to move Dhaka’s outdated overhead power lines underground. The goal is to modernize the capital’s electrical grid, reduce safety hazards, and improve the urban landscape.
This major infrastructure upgrade involves the installation and testing of Ring Main Units (RMUs), which are crucial components for medium-voltage power distribution in densely populated urban environments. These units help ensure uninterrupted power supply, minimize outages, and allow for easier fault isolation.
JRC Powertech has been selected to carry out comprehensive RMU testing as part of this high-impact initiative — a testament to our leadership in the power engineering sector in Bangladesh.
✅ In-Depth RMU Testing: What We Do and Why It Matters
To ensure long-term functionality and system safety, our engineering team is performing detailed tests on every RMU unit. Each component inside the RMU must perform with precision under high-voltage conditions.
Here’s a breakdown of the critical RMU components we test:
🔹 Current Transformer (CT) Testing: We check whether the CT accurately converts high current levels to manageable levels for metering and protection. A faulty CT can cause incorrect relay actions or power system failures.
🔹 Potential Transformer (PT) Testing: The PT is tested to verify voltage transformation accuracy, which is vital for both protective relay operation and system monitoring.
🔹 Circuit Breaker Testing: We assess the tripping mechanism, contact resistance, and interruption capacity of the breakers. This ensures they can isolate faults quickly without damaging the system.
🔹 Busbar Insulation & Continuity Checks: Busbars serve as conductors within the RMU. We conduct insulation resistance tests to prevent leakage currents and continuity checks to ensure smooth power flow.
🔹 Relay Functionality Testing: Protective relays are the brain of the RMU. We test for accurate relay responses during overcurrent, undervoltage, or short-circuit conditions to prevent equipment damage.
These tests are performed using advanced equipment and strict safety protocols, in compliance with IEC standards and DPDC specifications.
📍 Project Location Snapshot
📌 Location: Behind Abahani Club Field, Dhanmondi, Dhaka
📅 Project Phase: Active RMU testing and commissioning
👷 Site Partner: DPDC – TBEA JV
This is one of many locations where underground electrical infrastructure is replacing traditional pole-based cabling systems.
💡 How RMUs Contribute to a Smarter, Safer Dhaka
Ring Main Units are compact, sealed systems designed for use in medium-voltage networks — especially in urban areas like Gulshan, Banani, Mohakhali, and Dhanmondi.
Here’s why RMUs are game-changers for urban power systems:
- 🔌 Fault Isolation: RMUs allow parts of the network to be shut off for maintenance or faults without affecting the rest of the grid.
- 🛡️ Enhanced Safety: Enclosed systems reduce the risk of electrocution, arc faults, or other electrical hazards.
- 🏙️ Space Efficiency: Their compact design makes them ideal for installation in underground vaults, minimizing the need for large substations.
- ⚡ Load Flexibility: RMUs can manage fluctuating power demands in rapidly growing urban centers.
By ensuring every RMU is fully functional and accurately calibrated, JRC Powertech is helping build a more resilient and intelligent power grid for the nation’s capital.
🌆 A Vision for Dhaka: Goodbye to Overhead Wires
The skyline of Dhaka has long been cluttered with a web of overhead electrical lines, posing risks of fire, outages, and aesthetic degradation. The shift to underground power cabling is not just a cosmetic upgrade — it’s a major leap toward a safer, more reliable, and more efficient energy infrastructure.
The RMU testing at Abahani Club Field is part of this transformation. As each unit is tested and approved, Dhaka gets one step closer to eliminating its dependency on vulnerable overhead wires and moving toward a smart city vision.
This progress will benefit:
- Residents with improved power reliability
- Businesses through fewer service interruptions
- City planners with a clearer skyline and safer streets
🔌 Why JRC Powertech Is Trusted for High-Voltage RMU Testing in Bangladesh
With over two decades of experience in the power and energy sector, JRC Powertech is a trusted name in electrical system installation, testing, commissioning, and maintenance.
What Sets Us Apart:
- Certified engineers with deep expertise in medium and high-voltage systems
- State-of-the-art testing tools and diagnostic equipment
- Proven track record in nationwide power distribution projects
- Unmatched technical precision and commitment to safety
We are proud to support projects that redefine how electricity is delivered in Bangladesh — today and for the generations to come.
FAQ
RMU (Ring Main Unit) testing refers to the process of inspecting and verifying the performance of key components like circuit breakers, CTs, PTs, busbars, and relays in medium-voltage electrical distribution units. It ensures safety, fault protection, and reliability in underground or compact urban power systems.
RMU testing is essential for the DPDC-TBEA project as it guarantees reliable power distribution in Dhaka’s underground grid. Properly tested RMUs reduce outages, prevent electrical faults, and support the safe removal of overhead wires, contributing to a modern and organized city skyline.
JRC Powertech is responsible for the testing and commissioning of RMUs in the DPDC-TBEA project. Their work ensures that each unit meets safety and performance standards, helping to build a smart, underground electrical infrastructure for Dhaka.
Underground cabling improves safety by reducing fire risks and electrical hazards, enhances city aesthetics by removing overhead wires, and increases reliability by protecting cables from weather and external damage. It’s a key part of Dhaka’s smart grid transformation.
During RMU commissioning, engineers test Current Transformers (CTs), Potential Transformers (PTs), circuit breakers, busbars, and relays. Each test checks for accuracy, insulation, protection response, and operational readiness to ensure long-term performance.
Leading the Way Toward a Modern Power Grid
The DPDC-TBEA project is more than an infrastructure upgrade — it’s a symbol of Dhaka’s future. At JRC Powertech, we are honored to play a central role in this mission by ensuring the highest quality testing of every RMU unit.
With every successful test, we bring Bangladesh closer to a future where electricity is smarter, safer, and seamlessly integrated into urban life.
If you’re seeking a partner for electrical testing, commissioning, or full-scale infrastructure development, reach out to JRC Powertech — where expertise meets execution.
