The LM2500XPRESS+G5 DLE UPT is a modular aeroderivative gas turbine system built for fast, flexible, and efficient power generation in both onshore and offshore environments. It is particularly well-suited for applications across LNG facilities, gas pipelines, gas processing plants, and general power generation, including electricity production at both 50 and 60 Hz, without the need for a speed reducer.

The "+G5" designation refers to its fifth-generation power turbine, offering the highest output and efficiency in the 20–40 MW class. It supports both high-speed and low-speed power turbine configurations, allowing integration into a variety of grid or mechanical drive systems.

At its core, the G5 includes a high-pressure compressor derived from the LM2500+G4, now redesigned for longer service life. In a simple cycle, it achieves up to 41% efficiency, which is notable for a turbine of this size class. The system can start from cold and reach load in about five minutes, making it ideal for rapid-response applications.

The unit is built for speed and simplicity. It’s shipped in preassembled modules, with a compact footprint that helps reduce installation time.

The Dry Low Emissions (DLE) system supports environmental compliance without requiring water or steam injection, simplifying operations and reducing resource demands.

Altogether, the LM2500XPRESS+G5 DLE UPT provides a practical solution for projects that need reliable, fast, and efficient power without a complex setup.

The LM2500+G4 is an advanced variant of the LM2500+ aeroderivative gas turbine, designed to provide increased output and thermal efficiency through a set of targeted design upgrades. It retains the core architecture of the LM2500+ but introduces changes to the flow path that increase overall engine performance.

The primary difference between the LM2500+G4 and the LM2500+ is the increased flow capacity in the high-pressure (HP) compressor, HP turbine, and low-pressure turbine. These modifications raise the overall pressure ratio from 23.6 to 24.2, resulting in higher thermal efficiency and greater mass flow. The design changes are relatively limited, focusing mainly on minor geometry adjustments to blades and vanes to accommodate the increased flow.

In the high-pressure turbine, the G4 version includes improved blade cooling and upgraded materials. These changes enable the turbine to handle higher temperatures, contributing to both improved performance and component durability. To maintain proper rotor thrust balance with the updated flow path, the effective area of the compressor discharge pressure seal was also adjusted.

In terms of operational performance, the LM2500+G4 offers measurable improvements over the LM2500+ across a variety of ambient conditions. For example, it delivers approximately 11% more power in cold conditions and 12% more in hot conditions (running data to -50 deg F and start data to –40 deg F). In combined-cycle mode, the G4 variant is expected to provide a power increase of 8.5% and a heat rate improvement of 0.75% compared to the LM2500+.

The LM2500+G4 supports two power turbine configurations:

• A six-stage, low-speed power turbine, typically used for power generation applications with a nominal speed of 3600 rpm.
• A two-stage High-Speed Power Turbine (HSPT), used for mechanical drive applications, designed for a nominal speed of 6100 rpm, with an operating range from 3050 to 6400 rpm.

Both configurations support operation over a cubic load curve, which allows the turbine to match power output with varying mechanical loads — a feature especially useful in pipeline compression and similar variable-load industrial applications.

The E3/E17 off-engine electrical cables are designed for resilience in the toughest of applications. To protect the critical wiring components from exposure to harsh environmental conditions, these cables incorporate rugged materials and advanced protective features.

Used with LM2500 gas turbines, these cables are located outside the engine and serve as essential links between the turbine’s internal control systems and external instrumentation, control panels, and auxiliary equipment.

Built to withstand vibration, moisture, extreme temperatures, and chemical exposure, E3/E17 cable harnesses include stainless steel connectors, rubber or fluoropolymer over-molding, and electromagnetic interference (EMI) shielding to maintain signal integrity and durability.

The E3/E17 classifications indicate different cable configurations and connector types tailored for specific LM turbine system requirements. Both ensure reliable transmission of electrical power and control signals critical to turbine operation, safety, and performance monitoring.

Manufactured with custom materials and protective coatings, these cables comply with hazardous location standards such as ATEX and UL/CSA certifications. Their robust design provides long service life with minimal maintenance, supporting high fleet availability and operational reliability.

In oil and gas applications, where equipment is exposed to extreme environments and strict safety regulations, the E3/E17 off-engine cables offer dependable, durable connectivity. Their rugged construction and certification for hazardous locations make them ideal for maintaining safe, continuous turbine operation in demanding field conditions.