Turbines Roll-Royce Allison Centrax CX501 KB7

3796

This is a comprehensive technical profile of the Centrax 501KB7 turbine package. Built around the aeroderivative Rolls-Royce Allison 501K engine, this unit is a staple for industrial power generation, prized for its reliability and high-quality exhaust heat.

Here is the breakdown of the package details in English, formatted for clarity without the use of tables or sheets.

Package Overview: Centrax 501KB7
This power generation set is a robust medium-voltage solution designed for continuous duty. It pairs a high-performance Rolls-Royce Allison 501K single-shaft turbine with a high-efficiency Leroy-Somer LSA56 alternator.

Power & Efficiency
The unit delivers a net electrical output of 5,300 kWe, supported by a mechanical turbine power of 6,100 kWm. It operates with a thermal efficiency of 32.6%.

A quick technical note: The heat rate is listed as 11,052 kJ/MWh, but based on the efficiency rating, this is almost certainly 11,052 kJ/kWh. At this rate, the unit is performing exactly where it should for a well-maintained Allison 501 core.

Operational History
Since its last major overhaul, the turbine has recorded 13,366 Equivalent Operating Hours (EOH). With only 426 starts on the log, the machine has primarily been used for stable, long-run power generation rather than frequent cycling. This is generally preferred by maintenance engineers as it reduces thermal stress on the turbine blades and "hot section" components.

Thermal Performance & CHP Potential
One of the standout features of this package is the exhaust gas temperature of 511 °C. This high-grade heat makes the unit an ideal candidate for Combined Heat and Power (CHP) or cogeneration applications. It is capable of producing significant amounts of high-pressure steam if paired with a waste heat recovery boiler.

Electrical Configuration
The system is configured for 50 Hz operation at 6,300 Volts. A significant advantage of this specific package is the inclusion of the step-up transformer, which converts the output from 6,300 V to 20,000 V, allowing for direct integration into high-voltage utility grids or large-scale industrial distribution networks.

Scope of Supply
The package is housed in a silenced acoustic canopy and includes the following auxiliary systems:

Complete air intake and multi-stage filtration system.

Gas fuel lines equipped with certified safety valves.

Integrated control panel for local and remote monitoring.

Dedicated fire suppression system for the turbine enclosure.

Important Installation Note
It is important to highlight that this unit does not include an exhaust silencer. Given that aeroderivative turbines are naturally high-decibel machines, the procurement of an exhaust silencing system (or a recovery boiler to dampen the noise) will be a necessary step for site commissioning and environmental compliance.