BlackStone OFB 8500-3 D-ES - 6.3 kW Diesel Power Generator with AVR - DC 6 kW Three-phase

The Blackstone OFB 8500-3D-ES three-phase electric generator is powered by a 4-stroke diesel engine with 498 cc. It supplies 13 HP (9.6 kW). It is fitted with a roomy 11 L fuel tank and an easy start thanks to the electric start with keys. The alternator is fully coated with copper and the generator can reach up to 6300 W max. power. The compact size along with the user-friendly controls make the use really easy. On the control panel, there are two 16A Schuko outlets and a 16A three-phase outlet, a LED voltmeter that allows to always keep the generator under control and an outlet for the connection to an ATS panel, in addition to the other ones.

The engine is in compliance with the European regulations for EURO 5.

Equipped with an AVR card: the current generator has an electronic card that automatically regulates the output voltage, keeping it constant as the load changes.

The generator can work at temperatures between 5° and 40° and at an altitude not exceeding 1000 m.

The generator is not designed for energy production, charging or maintaining batteries for the photovoltaic or solar panels systems (or similar); this can seriously damage the generator.

WARNING: all these models of generators that do not belong to the PROFESSIONAL series (considering the product level evaluation used by our website) are not intended for more than 3-4 hours continuous work in order not to reduce the alternator durability as well as that of one of the other machine components due to the unit overheating or wear. As regards a home or intensive use of these generators, it is important to follow the indications mentioned above. In all these conditions, we highly recommend focusing the attention on the purchase of generators renowned as PROFESSIONAL by the product level classification made in our website.

The generator set alternator has a copper winding.

Maximum three-phase rated power* in emergency service LTP: 6.3 KW

Maximum rated single-phase power* in emergency LTP service: 2.1 KW

* in an emergency, the generator can deliver this power

Rated* three-phase power in continuous variable duty PRP: 6.0 KW

Rated* single-phase power in continuous variable duty PRP: 2.0 KW

* This last feature represents the technical data to take into account as effective according to the generator capacity of generating electric power (since it allows the generator running for a long period of time).

This Blackstone generator is also equipped with AVR card that allows an automatic output voltage regulation maintaining it constant even in case of sudden changes in load.

The generator is built into a heavy-duty frame through sturdy anti vibration rubber feet.

Focus on the battery.

Engine features:

Model: D500E
Engine type: 4-stroke single-cylinder
Cubic capacity: 498 cc
Power: 13 Hp
Fuel supply: diesel
Fuel tank capacity: 11 L

The generator AVR card (used to regulate the output voltage) even allows automatically regulating the gas rate and it is responsible for the engine acceleration in case of sudden changes in load.

Focus on the engine air filter

Focus on the recoil start

Focus on the oil tank

The control panel of the Blackstone power generator is complete and feature-rich.

• LCD screen to display the current voltage at the outlet and to display the alarm due to low oil level.
• Electric starter with key
• This generator is also equipped with a battery charger suitable for charging all 12-volt batteries. WARNING: This is not a 12-volt power supply system for operating 12-volt equipment. We reiterate that it is a normal battery charger.
• RCD panel
  Orange button (Test button)
  Blue button (Holds the lever for switching on)
• 16 A Shuko socket
• 16 A three-phase socket
• Possibility of connection with ATS panel
• Overlord protector, to protect the machine from a possible overload
• Pre Heater, button for pre-starting the machine

Focus on the tank

Focus on the muffler

Focus on the air filter

Engine lever

• Voltage: 400 volts
• Fuel tank capacity: 11 L
• Weight: 110 Kg
• Size: 72 x 48 x 60 cm

As regards the power needed referring to the use you will make of your generator, here below an extremely useful table to guide you among consumptions, starting coefficient and watt. Firstly, the highest-quality method is to identify which are the electric appliances we need to power with the generator and then perform a simple calculation to identify the necessary power that the generator must supply, as explained below.

Power required = Electric appliance consumption X Breakaway starting coefficient

The starting coefficient represents a fundamental feature for all the electric equipment as it indicates how much the consumption of the electric appliance increases. Therefore, it allows to concretely determine how many WATTs are necessary during the start-up operations.

Example: Air compressor ( 1500 Watt ) X Starting coefficient ( 2 ) = 3000 Watt

Hence, it is important to address your choice on a generator featuring equal or higher WATT-rated electric power than the result obtained from the calculation made.

( * ) Check the consumption of the electric appliance on the operator’s use and maintenance manual or on the plate attached to the machine.

WARNING! Purely indicative table. Thanks to the formula indicated above you can easily calculate the electric power that the generator has to supply in order and connect to the generator specific electric appliances and select the model of generator which best suits your needs.

• The generator can only be used to power individual electrical equipment (respecting the rated power in KW produced by the generator in relation to the absorption of the appliances during the starting phase that must be lower than the power supplied by the generator).

• The generator can be used to power household device in emergency conditions (no current service provided by the domestic household), exclusively on the models that are specifically provided with ATS (Automatic Transfer Switch) device (specifically designed for this purpose and provided with connecting systems to your household electrical power).
• The generator is NOT intended for PROFESSIONAL use. It means that it is exclusively designed for occasional use (infrequent use of the unit). The working hours must not exceed 3-4 of continuous running (which may lead to the alternator overheating or wear, especially to its internal components: alternator stator and rotor). Whether you’re looking for a generator for intensive use (once a week, for instance), the operator should address the choice to a different type generator specifically designed for a more intensive use. Indeed, you should focus the attention on PROFESSIONAL or even INDUSTRIAL quality-level generator (that is not provided with standard 3000 rev/min alternator as this specific model, but it is designed with professional alternator with low speed: 1500 rev/min – with liquid-cooled engine and alternator – in this case you’ll see that the unit specifications and price are much different from this model).

The generator is not designed to be installed in photovoltaic or solar energy systems for energy production nor for the recharging or maintenance of batteries of these specific or other electric systems. Indeed, it may damage seriously the generator on its internal components (alternator, engine and electrical component). Each photovoltaic system requires a generator for INDUSTRIAL use (not for domestic use as this present model), specifically designed and manufactured for this purpose. WE DO NOT PROVIDE WARRANTY on generators connected to photovoltaic systems, as this entails an IMPROPER USE OF THE UNIT.

It is also possible to purchase as an accessory the kit consisting of wheels and handles to attach to Blackstone power generators. This will make it much easier for the operator to transport the generator and minimise the effort required to move the machine.