Perkins 4008-30TAG3 Genset Engine – 1125–1250 kVA

The Perkins 4008-30TAG3 is a 30.561-litre, eight-cylinder diesel engine for high-output 1500 rpm / 50 Hz generator sets. The DGDH0156S / DGD0156S configuration covered on this page is rated at 1125 kVA prime and 1250 kVA standby, corresponding to 900 kWe and 1000 kWe at a stated power factor of 0.8.

TAG3 is the upper published output tier in the 4008-30TAG family. It shares the same basic 30-litre architecture as lower TAG variants, but its higher rating does not make engines, cooling packages or parts interchangeable without Build List and ESN verification.

Confirm DGDH0156S Before Using the 1125–1250 kVA Rating

The 1125 kVA prime and 1250 kVA standby figures on this page apply to the DGDH0156S / DGD0156S Build List family. The broader 4008-30TAG3 model name also appears with other Build Lists, including DGDH8674, but no output data for that version is provided in the supplied information.

A quotation should not be based only on “4008-30TAG3.” Record the complete Build List and ESN because regional, production-batch and package differences can affect the approved rating and parts selection.

Power Output at 1500 rpm

The DGDH0156S configuration has separate prime and standby ratings. These figures describe different operating duties and should not be treated as interchangeable output labels.

Prime and Standby Describe Different Operating Profiles

Prime power applies to the approved variable-load or regular operating profile of the complete generator set. Standby power is the higher emergency rating and remains subject to the operating-hour and load limits of the applicable standby classification.

A factory, hospital or data centre expecting regular generator operation should not size the project solely from the 1250 kVA standby figure. Annual operating hours, load variation, redundancy and the largest expected load step should be defined first.

TAG3 Compared with TAG2

The Perkins 4008-30TAG2 and TAG3 share the same stated cylinder arrangement, displacement, bore and stroke, compression ratio and general engine architecture. Their principal difference is the published output tier and Build List family.

TAG3 adds 115 kVA of published prime output and 125 kVA of standby output over TAG2. This does not establish drop-in compatibility. The alternator, coupling, radiator, fuel calibration, exhaust arrangement, controls and package release must be reviewed.

DGDH0156S and DGD0156S

DGDH0156S is identified as the original Perkins Build List designation assigned in 2016. DGD0156S is the shortened designation used for engines produced in later batches.

The supplied information treats both designations as the same stated engine specification with identical parts compatibility. The complete ESN remains necessary because it identifies the production record and component revisions of the individual engine.

Information to Record from the Nameplate

• Complete model: 4008-30TAG3
• Build List: DGDH0156S or DGD0156S
• Complete Engine Serial Number
• Rated speed: 1500 rpm
• Original generator-set manufacturer and model
• Package configuration when known

DGDH8674 Is a Separate Build

The supplied generation table also lists DGDH8674 as a 1500 rpm 4008-30TAG3 Build List. However, no prime or standby output is provided for DGDH8674 in the source page.

The 1125/1250 kVA figures should therefore not be assigned automatically to DGDH8674. A quotation or replacement review for that Build List requires its own Perkins rating and configuration documents.

A 1500 rpm / 50 Hz Product Page

All published ratings on this page are stated at 1500 rpm. No approved 1800 rpm / 60 Hz power output is provided for DGDH0156S or DGD0156S.

A 60 Hz project should use a separately documented engine configuration. Field conversion should not be approved solely by changing governed speed or by assuming that a similar kVA rating confirms compatibility.

Engine-Only, Electro Unit and ElectropaK Scope

The supplied content refers to engine-only supply while listing Electro unit / ElectropaK as the technical configuration. These descriptions should be treated as separate commercial scopes that require confirmation in the quotation.

The dimensions and weight published on this page apply specifically to the ElectropaK. They should not be presented as confirmed Electro unit dimensions because that package data is not provided in the source.

Mechanical Platform and ElectropaK Envelope

The 4008-30TAG3 uses an eight-cylinder in-line, 30.561-litre platform. The stated ElectropaK dry weight is 4217 kg, making lifting access, foundation loading and engine-room airflow primary project decisions.

Installation Checks Before Release

• Foundation dimensions and static loading
• Door, roof or crane access to the engine room
• Lifting method and lifting-equipment capacity
• Radiator airflow and hot-air discharge route
• Combustion-air supply and enclosure pressure restriction
• Exhaust routing and permitted back pressure
• Fuel-tank position and fuel-line routing
• Service clearance around heads, filters, manifolds and pumps

Individual Four-Valve Cylinder Heads

Each cylinder uses an individually mounted four-valve cylinder head. This arrangement supports gas flow and permits cylinder-level head work without treating the complete eight-cylinder engine as one head assembly.

The 4000 Series uses common design principles across several engine sizes, but shared architecture does not mean unrestricted part interchangeability between 4006, 4008, 4012 and 4016 engines.

Unit Fuel Injectors and Build-Specific Selection

Unit fuel injectors support fuel atomisation and controlled combustion. The injector listed for the DGD/DGDH0156S family is 858/35.

Injector, piston, valve, manifold and filtration parts should not be selected from the general “4008” description. Release them only after checking the exact Build List and complete ESN.

Fuel Consumption by Prime Load Point

The supplied prime-rating data shows that specific fuel consumption changes across the load range. The lowest listed value is at 75% load rather than at full load.

These are specific-consumption references rather than litres-per-hour guarantees. Actual fuel use depends on electrical load, fuel properties, alternator efficiency, ambient conditions and engine condition.

Application Review for 1.25 MVA-Class Generator Sets

The engine may be evaluated for manufacturing facilities, hospitals, data centres and other high-output prime or standby projects. The application should be reviewed through its load behaviour rather than only its connected-load total.

Parallel Operation Requires a Complete-System Design

Multiple generator sets using the 4008-30TAG3 can be configured for parallel operation when the complete packages have compatible controllers, alternators, automatic voltage regulators, protection settings and synchronization equipment.

Parallel capability is not established by the engine model alone. The maximum load step, synchronization sequence, breaker coordination and load-sharing strategy must be verified by the genset integrator.

Fuel-Optimised Rating and Emissions Position

The supplied product information states that the ratings are optimised for fuel consumption and do not comply with Harmonised International Regulation Emission Limits. The specification also lists exhaust aftertreatment as N/A.

These statements should not be interpreted as approval for every destination. Local emissions limits, tender requirements and supporting documentation must be confirmed before quotation or shipment.

Maintenance Planning

The applicable Perkins Operation and Maintenance Manual should define the service tasks, fluid specifications and intervals for DGDH0156S / DGD0156S. The large fluid capacities should also be considered when planning service stock and waste-fluid handling.

Original Perkins Replacement Parts

The following references are listed as original Perkins components for the DGD/DGDH0156S Build List family. Additional Perkins engine parts can be reviewed by component category, but final release should be based on the complete ESN.

Several component groups contain multiple references. Do not choose a part from appearance, dimensions or the generic model description alone. Confirm DGDH0156S / DGD0156S and the complete ESN before approving the final reference and quantity.

Procurement and Export Release

Availability should be confirmed at inquiry. The stated lead time is typically 3–4 weeks, while quotations are provided within 24 hours after the configuration, quantity and delivery terms have been defined.

Warranty Position

The supplied warranty statement distinguishes between prime and standby applications. Final coverage should still be confirmed against the engine serial number, commissioning date, application and applicable Perkins warranty terms.

Conditions Outside Warranty Coverage

• Incorrect installation or improper commissioning
• Failure to follow the applicable Perkins Operation and Maintenance Manual
• Normal consumption of filters, belts, coolant and lubricants
• Damage caused by contaminated fuel or incorrect lubricants
• Cooling-system neglect
• Unauthorised modifications or repairs
• Transit damage not reported within three working days

Information Required for Technical Review

• Complete Build List and ESN
• Current operating hours
• Prime or standby application
• Fault description and operating conditions
• Available fault codes
• Photographs and relevant service records

The stated technical-review period is within two business days after the required evidence has been received. The proposed response may include parts supply, coordinated repair support or an engine exchange, depending on the assessment.

Transit Damage Procedure

Inspect the shipment before signing the delivery receipt. Photograph visible damage before unpacking, record it on the receipt and notify the supplier within three working days. Do not commission a visibly damaged engine before the damage report has been reviewed.

Perkins 4008-30TAG3 FAQ

Which Build List carries the 1125/1250 kVA rating on this page?

The page-specific rating applies to DGDH0156S / DGD0156S. DGDH8674 is also listed as a TAG3 Build List, but no output is supplied for that version.

Is the TAG3 core engine completely different from TAG2?

The supplied information states that TAG2 and TAG3 share the same core engine architecture. Their output levels and Build List prefixes differ, and package compatibility must still be checked.

Is a 60 Hz version included in this specification?

No 1800 rpm / 60 Hz output is provided for DGDH0156S or DGD0156S. A 60 Hz project requires a separately documented configuration.

Which dimensions apply to this product?

The stated dimensions of 1920 × 3468 × 2194 mm and dry weight of 4217 kg apply to the ElectropaK. Electro unit dimensions are not provided.

What is the lowest listed specific fuel consumption?

The lowest supplied figure is 202 g/kWh at 75% prime load. Actual site consumption depends on the complete generator-set conditions.

Does the engine comply with harmonised international emissions limits?

The supplied page states that the fuel-optimised ratings do not comply with Harmonised International Regulation Emission Limits. Destination requirements must be confirmed before ordering.

Can several TAG3 generator sets operate in parallel?

Yes, when the complete generator systems have compatible synchronization, protection, voltage regulation, controls and load-sharing functions.

What information is required for a quotation?

Provide the complete model, Build List, ESN, duty, package scope, genset details, quantity, destination and required documentation.

Request a 4008-30TAG3 Configuration Review

Submit the following through the engine inquiry and quotation page:

• Build List DGDH0156S or DGD0156S
• Complete ESN or a clear nameplate photograph
• Prime or standby duty requirement
• Confirmation of 1500 rpm / 50 Hz operation
• Engine-only, Electro unit or ElectropaK package requirement
• Alternator output, voltage and power factor
• Maximum site temperature and altitude
• Original generator-set manufacturer and model for replacement projects
• Quantity, delivery terms and destination port
• Required emissions, export, test and warranty documentation