Excel Power XL-DK-28 | 22kW Silent Diesel Generator | 400V Three Phase | 1500RPM

Excel Power XL-DK-28 | 25kVA Silent Diesel Generator | 400V Three Phase | 1500RPM

The Excel Power XL-DK-28 25kVA Diesel Generator is a powerful, reliable and professionally engineered three-phase generator designed to provide dependable electricity for commercial premises, agricultural properties, workshops, larger residential installations and demanding standby power applications.

Delivering 25kVA / 20kW prime power and 27.5kVA / 22kW standby power, this heavy-duty diesel generator combines a dependable DEPCO water-cooled engine, high-performance alternator and low-speed 1500RPM operation to deliver consistent electrical output when mains power is unavailable.

Designed for durability and reliability, the XL-DK-28 features a sound-attenuated acoustic canopy, automatic voltage regulation, a DATAKOM digital control panel and an integrated 43-litre diesel fuel tank.

With its 400V / 230V, 50Hz three-phase electrical configuration, this generator is particularly suitable for UK businesses and properties requiring a three-phase backup electricity supply.

Whether you're protecting essential business operations, powering agricultural equipment or installing a permanent standby generator, the Excel Power XL-DK-28 provides a practical combination of power, performance and long-term reliability.

Key Features & Benefits

• 25kVA / 20kW Prime Power – Dependable electricity generation for suitable variable-load applications.

• 27.5kVA / 22kW Standby Power – Additional capacity for emergency backup applications.

• 400V / 230V Three Phase – Designed for UK three-phase electrical installations.

• 1500RPM Diesel Engine – Low-speed operation engineered for durability and dependable performance.

• DEPCO-4R95 Diesel Engine – Robust four-cylinder engine with water cooling.

• DEPCO-20-3 Alternator – Reliable electricity generation for commercial and professional applications.

• Automatic Voltage Regulation (AVR) – Maintains voltage regulation within ±1%.

• Acoustic Canopy – Reduced operating noise of approximately 70dB(A) at 7 metres, according to the supplied specification.

• DATAKOM D100 Control Panel – Digital generator control and monitoring.

• 43-Litre Fuel Tank – Integrated diesel storage for standby and prime-power applications.

• Electric Starting System – Convenient starting and operation.

• ATS Compatible – Optional automatic transfer switch arrangements.

• Heavy-Duty Construction – Robust enclosure and steel base frame designed for demanding installations.

Reliable Three-Phase Backup Power for Homes & Businesses

Unexpected power cuts can disrupt commercial operations, agricultural equipment, refrigeration, heating systems and other essential electrical services.

The Excel Power XL-DK-28 three-phase diesel generator provides a dependable solution for premises requiring an alternative source of electricity during mains failures.

With a standby rating of 27.5kVA / 22kW, the XL-DK-28 is suitable for a range of commercial and residential applications, subject to correct electrical load assessment and installation.

Typical applications include:

• Commercial buildings and retail premises

• Agricultural properties and farm buildings

• Workshops with three-phase electrical equipment

• Rural properties with three-phase supplies

• Warehouses and storage facilities

• Pumps, compressors and suitable motor-driven equipment

• Refrigeration and essential business systems

• Permanent standby power installations

The generator can also support appropriately connected 230V single-phase loads, provided phase balancing, individual phase limits and the overall generator capacity are correctly assessed.

When installed with a compatible Automatic Transfer Switch (ATS), the XL-DK-28 can form part of an automatic backup power system designed to respond to mains electricity failures.

Heavy-Duty DEPCO Water-Cooled Diesel Engine

At the heart of the Excel Power XL-DK-28 is the robust DEPCO-4R95 four-cylinder diesel engine.

With a displacement of 2.836 litres, the engine operates at a steady 1500RPM and is designed to provide dependable mechanical power for the generator's alternator.

The water-cooled system helps maintain suitable operating temperatures, supporting reliable performance during standby and appropriately rated prime-power applications.

Its mechanical governing system regulates engine speed, while the heavy-duty engine construction is designed for demanding environments.

Operating at 1500RPM makes this model particularly well suited to permanent generator installations where durability and dependable operation are important.

Stable Three-Phase Electrical Output with AVR

The XL-DK-28 features a DEPCO-20-3 alternator with automatic voltage regulation.

The AVR helps maintain voltage regulation within the specified ±1% tolerance, supporting consistent electrical output under changing loads.

This makes the generator suitable for a broad range of commercial electrical equipment and appropriately designed three-phase installations.

For particularly sensitive electronics, specialist machinery or equipment with demanding power-quality requirements, additional UPS protection or power conditioning may be appropriate.

Acoustic Canopy for Reduced Operating Noise

The Excel Power XL-DK-28 incorporates a sound-attenuated acoustic canopy designed to reduce operating noise while protecting the generator's internal components.

The supplied technical specification lists a noise level of 70dB(A) at 7 metres under free-field conditions.

Its enclosed design makes the generator suitable for consideration in commercial, agricultural and residential environments where noise reduction is important.

As with all fixed diesel generators, the installation must account for ventilation, exhaust discharge, safe operating clearances and applicable local noise requirements.

43-Litre Diesel Fuel Tank

The XL-DK-28 features an integrated 43-litre diesel fuel tank, providing onboard fuel storage for standby and prime-power operation.

Manufacturer-listed fuel consumption is approximately 7.8 litres per hour at full load.

Actual consumption and running time will vary depending on the connected electrical load, operating conditions and generator configuration.

For installations requiring longer operating periods, external fuel storage arrangements may be available subject to compatibility.

DATAKOM D100 Digital Control Panel

The DATAKOM D100 control panel provides an accessible interface for generator operation and monitoring.

Depending on its configuration and connected sensors, monitoring and protection functions may include:

• Generator voltage and frequency

• Engine operating hours

• Engine temperature and oil pressure

• Generator operating information

• Fault warnings and alarm indications

• Engine protection and shutdown functions

• Integration with compatible automatic standby equipment

The control system helps provide the operating information required for professionally managed standby generator installations.

Optional Accessories & Upgrades

The Excel Power XL-DK-28 can be configured with additional equipment to suit specific installation requirements.

Available options may include:

• Automatic Transfer Switch (ATS) – Automatic switching between mains and generator electricity.

• External Diesel Fuel Tank – Additional fuel storage for longer running periods.

• Battery Charging Equipment – Helps maintain starter battery charge during standby operation.

• Engine Coolant Heater – Supports engine starting in colder conditions.

• Control Panel Upgrades – Additional control and monitoring functions where available.

• Output Socket Options – Alternative electrical connection arrangements subject to manufacturer confirmation.

• Fuel Management Accessories – Additional equipment for compatible fuel installations.

Please contact Leader Pro Ltd to confirm accessory availability and compatibility.

Important Installation Information

Please note: The correct engine oil and coolant levels must be confirmed before the generator is started or commissioned.

The Excel Power XL-DK-28 is intended primarily for professionally installed generator applications.

As a three-phase machine, careful consideration must be given to connected electrical loads, phase balancing, starting currents and the installation's electrical configuration.

Electrical installation, earthing, protection and changeover arrangements must be completed by appropriately qualified professionals.

The generator must not be connected directly to a building's electrical installation without correctly designed transfer and protection equipment.

Safe ventilation, exhaust discharge and appropriate operating clearances are essential.

Manufacturer Warranty & Commissioning

Excel Power 1500RPM diesel generators are supplied with a manufacturer's limited warranty, subject to the applicable policy and commissioning requirements.

Standard Warranty

• 12 months or 1,000 operating hours, whichever occurs first.

• Applies to eligible domestic and commercial installations.

• Professional commissioning is required under the supplied warranty conditions.

Mandatory Commissioning

Commissioning must be completed by an authorised Excel Power dealer or a competent independent generator engineer.

A formal commissioning certificate must be issued and retained.

Failure to meet the manufacturer's commissioning requirements may affect warranty eligibility.

Extended Warranty Option

An extended limited warranty of up to 24 months or 2,000 operating hours may be available through an eligible continuous maintenance agreement.

The agreement must commence at commissioning and follow the manufacturer's required service schedule.

For standby applications, this generally involves approximately six-monthly scheduled maintenance.

For prime-power applications, the supplied warranty guidance specifies maintenance at approximately 400-hour operating intervals.

Please contact Leader Pro Ltd to confirm current manufacturer warranty terms and extended coverage options.

Why Buy from Power-Generator.uk?

At Power-Generator.uk, part of Leader Pro Ltd, we specialise in supplying reliable diesel, petrol and inverter generators for domestic, commercial and professional applications across the United Kingdom.

We understand that selecting the correct generator is essential, particularly when designing a permanent backup power installation.

Our team can assist with:

• Diesel generator sizing and selection

• Three-phase backup power requirements

• Commercial standby generator enquiries

• Automatic Transfer Switch compatibility

• Generator accessories

• General technical product guidance

Whether you're looking for reliable agricultural power, a commercial standby generator or a three-phase backup solution for your property, we're here to help.

Need advice about the Excel Power XL-DK-28?

Contact our team on 0800 222 9069 or visit www.power-generator.uk.

Leader Pro Ltd – Reliable Power Solutions for Homes and Businesses Across the UK.