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The Grupel GRGR70 70kVA Diesel Generator.

Part of the robust Grupel Industrial Range, the Grupel GRGR70 70kVA 3-Phase Diesel Generator is engineered to deliver unwavering reliability for businesses that demand standby power during grid failures or prime power in off-grid environments. Built entirely with Grupel’s own brand engine and alternator, this 70kVA diesel generator combines industrial-strength performance, advanced noise suppression, and extended runtime capabilities making it the ultimate choice for factories, data centres, hospitals, and large-scale commercial operations.

Technical Specifications & Power Output

  • Standby Power: 69kVA / 55kW
  • Prime Power: 63kVA / 50kW
  • Engine Speed:
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Part of the robust Grupel Industrial Range, the Grupel GRGR70 70kVA 3-Phase Diesel Generator is engineered to deliver unwavering reliability for businesses that demand standby power during grid failures or prime power in off-grid environments. Built entirely with Grupel’s own brand engine and alternator, this 70kVA diesel generator combines industrial-strength performance, advanced noise suppression, and extended runtime capabilities making it the ultimate choice for factories, data centres, hospitals, and large-scale commercial operations.

Technical Specifications & Power Output

  • Standby Power: 69kVA / 55kW
  • Prime Power: 63kVA / 50kW
  • Engine Speed: 1500 RPM (optimized for 50Hz output)
  • Phase Configuration: 3-Phase (supports heavy machinery and complex power grids)
  • Alternator: Grupel 224GB63 (Class H insulation, brushless design)
  • Controller: Grupel G545 (advanced monitoring with user-friendly interface)
  • Fuel Consumption: ~13L/hour at 75% prime load

Designed for rigorous industrial use, the Grupel GRGR70 70kVA diesel generator operates at 1500 RPM to ensure fuel efficiency, reduced engine wear, and stable voltage regulation (±1%). Its 3-phase output guarantees balanced power distribution for high-demand equipment like industrial motors, CNC machines, and HVAC systems.

Standby vs. Prime Power: Engineered for Flexibility

The Grupel 70kVA genset offers unmatched versatility with dual power ratings:

  • Standby Power (69kVA/55kW): Ideal for emergency backup in critical facilities such as hospitals, data centres, or manufacturing plants, where downtime is not an option.
  • Prime Power (63kVA/50kW): Built for continuous operation in remote sites like mining operations, oil rigs, or construction projects where grid power is unavailable.

Competitive Comparison:

  • Smaller Units (50–60kVA): Suitable for light industrial use but lack the capacity to handle large machinery or multi-system loads.
  • Larger Units (80–100kVA): Offer higher output but consume significantly more fuel and require greater space, making them less practical for mid-sized operations.
  • GRGR70 70kVA: Strikes the perfect balance, delivering robust power without compromising efficiency or footprint.

Close-Fitting Acoustic Canopy: Quiet Power at 71 dB(A)

Despite its industrial power, the Grupel GRGR70 70kVA 3-Phase diesel generator operates at just 71 dB(A) at 7 meters thanks to its precision-engineered acoustic canopy. This makes it suitable for noise-sensitive environments like urban construction sites, hospitals, or event venues. Competing models in this class often exceed 75 dB(A), highlighting Grupel’s commitment to reducing noise pollution without sacrificing performance.

200-Litre Bunded Fuel Tank: Extended Runtime & Safety

The GRGR70’s 200-litre bunded fuel tank provides up to 15.3 hours of continuous operation at 75% prime load (50kW), minimising interruptions for refueling. The bunded design includes a secondary spill containment layer, ensuring compliance with environmental regulations and preventing leaks. Compared to smaller 55kVA generators (which may need refueling every about 6 hours) or larger 85kVA+ units (with higher fuel consumption), this 70kVA genset optimizes runtime for cost-effective, long-term use.

Standby-Ready Features: Always Prepared

Pre-installed engine coolant heaters and battery chargers ensure the Gurpel GRGR70 70kVA generator is primed for instant activation, even in sub-zero temperatures. The coolant heater maintains optimal engine readiness, while the battery charger guarantees reliable starts features often sold as expensive add-ons by competitors. This plug-and-play reliability is critical for facilities like emergency response centres or semiconductor factories, where delays can result in significant financial or safety risks.

Grupel 224GB63 Alternator & G545 Controller: Built to Last

  • Grupel 224GB63 Alternator: Featuring Class H insulation (resistant to temperatures up to 180°C) and a brushless design, this alternator ensures minimal maintenance, high efficiency, and stable power output under extreme loads.
  • Grupel G545 Controller: Provides real-time diagnostics for fuel levels, battery status, and engine health, with automatic shutdown for critical faults like overheating or low oil pressure.

These components outperform generic alternatives, which often lack the durability and precision required for industrial applications.

2-Year/2000-Hour Warranty: Fully Supported in the UK

Backed by a comprehensive 2-year or 2000-hour warranty (whichever comes first), the GRGR70 is fully supported by Hampshire Generators, Grupel’s UK partner. This includes nationwide servicing, technical assistance, and access to genuine parts—advantages that imported or lesser-known brands cannot match.

Hampshire Generators can also maintain your generator with a regular cost-effective service plan or one-off visit. Simply call 01329 722390 or inquire via contact us page for more information.

Why Choose a 70kVA Diesel Generator?

  • Optimal Power-to-Size Ratio: Delivers 20–25% more power than 55kVA models while maintaining a compact footprint.
  • 3-Phase Efficiency: Essential for powering industrial equipment, large commercial buildings, or multi-motor setups.
  • Fuel Economy: Consumes ~13L/hour at 75% load, compared to 16–18L/hour for 85kVA+ units, reducing operational costs.

Competitive Comparison: 70kVA vs. Other Sizes

  • 55kVA Generators: Ideal for smaller factories but struggle with high-demand machinery.
  • 85kVA Generators: Higher output but require more space, fuel, and infrastructure investment.
  • GRGR70 70kVA: Offers the best of both worlds—ample power for industrial needs without excessive running costs.

Grupel GRGR70 70kVA 3-Phase Diesel Generator: Industrial-Grade Power for Mission-Critical Demands

The Grupel GRGR70 70kVA 3-Phase Diesel Generator is a cornerstone of the Grupel Industrial Range, combining rugged reliability with user-friendly innovation. From its 71 dB(A) acoustic performance to its 55-litre bunded fuel tank and standby-ready design, every feature is engineered to maximize uptime and minimize costs. Supported by Hampshire Generators’ unparalleled UK service network, this 70kVA diesel generator is the smart investment for businesses that refuse to compromise on power, safety, or efficiency.

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Main Features :

  • Frequency Hz 50
  • Voltage V 400
  • Power factor cos ϕ 0.8
  • Phase 3

Power Rating :

  • Standby power LTP kVA 69
  • Standby power LTP kW 55
  • Prime power PRP kVA 63
  • Prime power PRP kW 50

Engine specifications :

  • Engine manufacturer Grupel
  • Model 4GD35TIDS21
  • Cylinder Configuration In Line
  • Number of cylinder 4
  • Displacement LT 4.1
  • Aspiration Turbo-intercooled
  • Speed governor Electronic
  • Cooling System Water LT 15
  • Lubrication Oil Capacity 7.5
  • Electrical System VDC 24
  • Speed / Frequency 50 Hz rpm 1500 rpm/ 50 Hz
  • Engine Gross Power (Standby 50 Hz) kW 75
  • Fuel Diesel
  • Starting system Electric

Alternator Specifications:

  • Alternator Grupel
  • Model 224GB63
  • No of Phases 3
  • Voltage V 400
  • Frequency Hz 50
  • Power factor cos ϕ 0.8
  • Poles 4
  • No of Bearings Single
  • No of Leads 6-12
  • Insulation Class H
  • Degree ofProtection IP 23
  • Excitation System AVR (Automatic Voltage Regulator), Brushless
  • Connection Type Star-Triangle

Dimensional data :

  • Length (L) mm 2330
  • Width (W) mm 1015
  • Height (H) mm 1580
  • Weight Kg 1362.5 dry
  • Fuel tank capacity L 200

Fuel consumption:

  • Diesel Consumption %110 ESP 50 Hz lt/h 19
  • Fuel Consumption %100 PRP 50 Hz lt/h 17.1
  • Diesel Consumption %75 PRP 50 Hz lt/h 13
  • Fuel Consumption %50 PRP 50 Hz lt/h 9

Noise level :

  • Noise pressure level @ 1m 79dB(A)
  • Noise pressure level @ 7m 71dB(A)
  • Tolerance +/-2dB(A)

Delivery

When will I receive my order?

In most cases, a product on our website will give you an indication of the current stock availability, but shipping is not uniform for all products. We maintain fantastic relationships with all of our suppliers and we aim to get products to customers within 3 business days of the order being taken. This ava

...

When will I receive my order?

In most cases, a product on our website will give you an indication of the current stock availability, but shipping is not uniform for all products. We maintain fantastic relationships with all of our suppliers and we aim to get products to customers within 3 business days of the order being taken. This availability is based on information from our suppliers and from sales and supply patterns. The availability information given is a guide only and not a guarantee as there are external factors that we may not have control over.

Coronavirus Update – UK couriers and transport companies will not currently guarantee delivery times and we are seeing a slight delay in deliveries – please bear this in mind when ordering.

Specialist Couriers – Some items such as the larger portable power stations are sent by specialist courier as standard couriers will not accept them. These specialist couriers are very reliable but sometimes don’t have tracking or timed delivery.

Split deliveries – We sometimes need to send orders for more than one item by different courier networks (portable power stations for example) – so you may receive items at different times.

1500rpm machines or larger diesel gensets however are typically priced on application and all depend on the destination. We will be happy to quote on any large diesel generator and discuss your needs over the phone or via email.

Most orders placed before 12pm on a business day will be shipped from our suppliers on the same day provided the product is in stock. If you need to be certain an item is in stock and available, or if you need a lead time, it’s worth calling our sales team on 01329 722390. Pricing for extended shipping areas like Northern Ireland, the Scottish Highlands and outlying Islands, Outer Hebrides, Channel Islands, Isle of Man, Scilly Isles, and other postcodes not considered as UK mainland can be obtained also by calling our offices.

Please note that the processing of a payment and acknowledgement email does not constitute a legally binding contact. In the case of mispricing, changes in stock quantity, or if we believe the machine will be misused, we reserve the right to cancel the order and provide a full refund.

Heavy Items

You will be contacted by phone after ordering a larger item to confirm a delivery date before your order is dispatched. Large or heavy items are dispatched through a pallet network, so if we can’t get in contact with you, we may be unable to send out your item on a next day delivery. Please be sure to include a working phone number with your order.

Heavy items will require the recipient to make arrangements to take delivery of the goods and may require the recipient to help the courier unload the item. For items that are delivered on a pallet the courier will leave the pallet as close to your door as possible.

1500rpm diesel generators will require forklift (or similar) offloading; if this is not available then we can arrange a Hiab offload at an additional price – please call us to discuss any delivery requirements.

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Have any questions on the Grupel GRGR70 70kVA Diesel Generator?

Get in touch with us today and we'll be happy to answer any questions you have.

  • CALL US

    01329 722390

  • EMAIL

    info@hampshiregenerators.co.uk

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