Exporting Used Generators from the UK: A Complete, Low-Risk Guide

Who This Guide Is For And What You’ll Learn

This guide is for buyers, EPCs, dealers and facilities teams exporting used diesel generators from the UK. You’ll learn how to de‑risk export across:

Electrical compatibility (50/60 Hz, voltage and earthing)
Sizing and proving performance
Compliance and documentation
Packing, shipping and insurance
Customs, Incoterms and paperwork
Destination commissioning and ATS integration

We work with trusted brands such as Cummins, Perkins, FG Wilson, Baudouin, Volvo Penta and Scania for construction, data centres, manufacturing, healthcare and utilities. PowerTech Generators provides end‑to‑end delivery: sourcing, decommissioning, refurbishment, export packing, logistics and destination commissioning. Start with our export page or browse used generators.

Electrical Compatibility: 50/60 Hz And Voltage Matching

Match the genset to the destination grid and loads before you buy:

Confirm frequency, voltage and earthing. Many alternators are 12‑lead and can be reconnected for 400/230 V, 415/240 V or 480/277 V.
Check governor and AVR settings and mechanical limits for 50 Hz (1500 rpm) or 60 Hz (1800 rpm). Fit a transformer if necessary.
Assess loads: motor starts (DOL, soft starter, VFD), UPS and other non‑linear loads, acceptable voltage dip and harmonics.
Align earthing and ATS: TN‑S, TN‑C‑S or TT; 3‑ or 4‑pole switching; open or closed transition.
For VFD‑heavy sites, see right sizing industrial generators.

Sizing And Proving Performance Before Export

Size correctly and prove it before shipment:

Calculate kVA/kW with diversity, starting currents and power factor.
Apply ISO 8528 ratings (Standby/Prime/Continuous) and derate for temperature and altitude.
Run a witnessed load‑bank test: 0–100% steps, transient response, voltage/frequency regulation and recovery.
Record alternator insulation (IR/PI), AVR settings and protective trips. Issue a signed test certificate with data.

Read more on ISO 8528 ratings and generator load testing.

This image was generated with AI and may not always represent the product or service exactly.

Compliance And Documentation: UKCA/CE, DoC And Evidence Pack

Used sets typically retain original UKCA/CE status, but rules vary by destination and use case (seek local guidance). Confirm whether the set is stationary or mobile and whether any modification affects conformity.

Prepare an evidence pack that travels with the genset:

Declaration of Conformity (DoC) and serialised photos of data plates (engine, alternator, canopy/baseframe)
Wiring schematics, controller manuals and AVR settings
Load‑test certificates, noise data and service records
Any previous G99/G98 type test evidence and ATS conformity notes

Destination Rules: Emissions, Electrical Codes And Environment

Emissions: check frameworks (EU Stage V, US EPA Tiers, others) and any import restrictions on older engines. State stationary vs mobile use. Retrofit after‑treatment is rarely viable—declare status clearly.
Electrical codes: confirm local wiring standards and earthing practice to set ATS neutral switching and protection.
Environment: note ambient temperature, altitude, humidity, dust/sand and salt. Adjust derating, filtration, breathers and corrosion control.
Fuel: confirm diesel sulphur level and storage conditions; choose suitable oils/filters and set service intervals. See our generator fuel efficiency guide.

Refurbishment And Pre‑Export Servicing

Typical scope before export:

OEM filters/fluids; belts/hoses; coolant strength check
Valve set if required; injector checks; battery test/replace
Alternator IR/PI; AVR calibration; controller I/O verification
Enclosure corrosion treatment; exhaust/flex inspection; bund integrity
Fit new consumables and verify sensors/alarms

Ship a spares kit for 1,000–2,000 hours: air/fuel/oil filters, belts, coolant, fuses, hoses, clamps and AVR brushes (if applicable). Good preventive care reduces downtime—see how to extend the lifespan of your generator.

Safe Decommissioning, Removal And Temporary Cover

Work to CDM and site rules with RAMS, isolation/LOTO, cable identification and cranage method statements.
Check floor loadings and agree a clear transport route; coordinate shutdown windows with stakeholders.
Manage fuel uplift, tank de‑gas and waste transfer notes. Deploy spill control and reinstate the site.
Need bridging power? Our hire team can maintain resilience during changeout. Learn more about diesel generator decommissioning and removal.

Packing, Crating And Marine Insurance

Sea prep: isolate batteries; drain/declare fluids as required; cap exhaust/intakes; shrink‑wrap; add desiccants/VCI; apply corrosion protection.
Crating: use ISPM 15 heat‑treated timber with bracing at baseframe lifting points. Fit shock/tilt indicators and record a full condition report with photos.
Mode: choose 20’/40’HC container, open‑top, flat‑rack or RoRo based on size, weight, lifting at both ends and budget.
Insurance: place Institute Cargo Clauses (A) plus War/SRCC. Align valuation, surveys and Incoterms (EXW, FCA, FOB, CIF, DAP) with the contract.

This image was generated with AI and may not always represent the product or service exactly.

Customs And Export Paperwork

Classification: confirm HS codes under heading 8502 (verify against spec).
Exporter setup: ensure EORI and lodge the export declaration.
Documents: commercial invoice, packing list and certificate of origin. Keep serial numbers and condition notes consistent across all paperwork.
Extras: many destinations need used equipment condition reports with photos. Some require pre‑shipment inspection or letters of credit—check wording, dates, Incoterms and signatures early.

Destination Commissioning, ATS Integration And Training

On arrival: placement, earthing verification, insulation tests, ventilation/fuel checks and first start.
Testing: run no‑load/load tests and witness against acceptance criteria with clear sign‑off.
ATS and controls: set open/closed transition; 3‑ or 4‑pole neutral; verify UPS ride‑through, protection coordination and control logic. See UPS–generator integration.
Handover: O&M pack, operator training and a servicing plan.

Use Cases And Example Export Specifications

Construction (150–250 kVA Perkins/Cummins canopy): convert to 60 Hz; 480 V reconnection; open‑transition ATS; weather protection; include spares and a simple operator guide for rotating crews.
Data centres (800–1,250 kVA FG Wilson/Baudouin pair): synchronising switchgear; defined step‑load and UPS‑tuned voltage response; include type test evidence and black‑start drills.
Healthcare/manufacturing (250–800 kVA): closed‑transition ATS; hospital‑grade noise limits; fuel polishing provision and documented maintenance intervals.

Buying, Selling, Trade‑In And Finance Options

Check live stock, request video inspections and book a remote FAT.
Reserve with a deposit; plan lead time for refurbishment, crating and vessel schedules. We provide clear timelines and status updates.
Trade‑in or sell your current set with transparent valuations.
Finance and export‑appropriate warranty options with defined inclusions/exclusions. See new generators, used generators and finance.

Common Pitfalls And A Pre‑Export Checklist

Frequent issues:

Wrong frequency/voltage or missed reconnection options
Neutral not switched when required by the earthing scheme
Undersized sets for motor starts and UPS ride‑through
Missing DoC/serial photos and incomplete evidence packs
Non‑ISPM 15 timber or poor corrosion control in packing
Mis‑declared HS codes; Incoterms or insurance gaps
Ignored emissions limits and no destination spares

Timeline drivers: refurbishment scope, ATS build, PSI slots, vessel space and route.
Cost drivers: crate type, transport mode, insurance, inspections and on‑site lifting.

Pre‑export checklist:

Confirm grid data (Hz, voltage, earthing) and load profile
Size to ISO 8528 with derating and motor/UPS considerations
Complete load‑bank test and issue certificate
Build compliance pack (DoC, manuals, schematics, serial photos)
Agree ATS configuration (transition type and neutral switching)
Refurbish and service; prepare 1,000–2,000 hour spares kit
Plan decommissioning, LOTO and fuel/tank handling
Crate to ISPM 15 with moisture and shock controls
Set insurance cover and Incoterms in the contract
Prepare customs documents and any PSI/LoC requirements

Talk To PowerTech: Plan Your Export With Confidence

Share your destination, grid spec, load details, ship date and paperwork constraints (COO, PSI, LC). We will issue a fixed‑scope proposal covering refurbishment, testing, packing, logistics, insurance and destination commissioning.

PowerTech Generators delivers 24/7 support and global capability with independent sourcing. Start here: export or get in touch via contact.

FAQs

Can A 50 Hz UK Generator Run On A 60 Hz Grid?

Often yes. Reconfigure to 60 Hz (typically 1800 rpm), adjust governor/AVR, confirm voltage reconnection and mechanical limits, then prove under load before export.

Do I Need UKCA Or CE For A Used Exported Generator?

Usually the original conformity remains valid, but it depends on destination rules and any modifications. Provide a full documentation pack and confirm local requirements.

What Load Testing Should Be Done Before Shipment?

Run a resistive/reactive load‑bank test with step and transient checks, verify voltage/frequency regulation and insulation resistance, and issue a signed certificate with results.

Which Shipping Method Is Best For A Genset?

Smaller canopies suit containers; larger/heavier units use open‑top, flat‑rack or RoRo. Decide based on dimensions, lifting at both ends and budget.

What Spares Should I Ship With The Generator?

Send 1,000–2,000 hours of consumables: oil/fuel/air filters, belts, coolant, hoses, clamps, fuses and AVR brushes (if applicable). Include service intervals in the handover pack.