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4-Stroke Petrol Inverter Generators

12 hp, 4-stroke petrol engine

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yamaha pdf manual
EF1000iS Product Sheet

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Yamaha Product Brochure

1 kW inverter generator

MODEL NO.
EF1000iS

A petrol powered inverter generator, the EF1000iS is the lightest generator in its class at only 12.7kg and will run continuously for up to 12 hours without refuelling (at 1/4 load with Eco On).

This small but hardworking unit is perfect for camping, fishing, boating, the caravan, motorhome and RV, and will run all your sensitive electronic equipment and accessories such as laptops / tablets, video gaming systems, phones, TVs, coffee maker, portable fan, microwave oven (up to 650 watts), slow cooker, stereo/radio or lighting.

This super light and super quiet unit comes with many great features (see below), and is also available with a dust cover as an optional extra.

Specifications

Power Rating: 1000 W
Generator Type: Inverter
Rated Voltage: 230 V
Frequency: 50 Hz
Rated Output: 900 W 
Max. Output: 1000 W 
DC Output: 12 V / 8 Amp
Dimensions: 450(L) x 240(W) x 380(H) mm
Weight: 12.7 kg
Fuel Tank Capacity: 2.5 L
Operating Hours (Eco On): 12 hr (1/4 load)
Noise Level @ 7m: 47 dBA (1/4 load) / 57 dBA (full load)
Engine Type: 0HV Air Cooled - MZ50
Displacement: 50 cc
Max. Output: 1.6 kW (2.2 hp) / 4000 rpm
Starting System: Recoil

... smaller, lighter, quieter and out performs the competition!

MODEL
EF1000iS
COMPETITOR
Weight (kg) 12.7
13
Noise Level (1/4 Load / 7m) 47 dBA 52 dBA
Noise Level (Full Load / 7m) 57 dBA 58 dBA
Operating Hours (1/4 Load)
12 hr
8 hr
Fuel Cap Opening (mm)
45
37
Oil Capacity 320
260
Fuel Tank Capacity 2.5 L 2.1 L
Independent Fuel Tap
Yes No
Central Control Panel
Yes
No
Engine RPM (1/4 Load) 3000
4000
Double Coil StatorYesNo
Body on Chassis Design Yes No
Yamaha Data, July 2017.

FEATURES

ACCESSORIES

What is an Inverter System?

An inverter system stabilizes the amount of voltage and frequency produced by a petrol engine driven alternator through the supply of "sine wave" electricity, with a distortion ratio of less than 3%.  That's why Yamaha Inverters are the ideal power source when using precision equipment or micro-computer controlled electrical appliances.


More Controlled, Clean Power

Yamaha's Inverter system produces AC current within a controlled electrical circuit process, known as PWM (Pulse Width Modulation).  As a result, fluctuations in engine speed do not affect the voltage or frequency of the electrical output while at the same time reducing output emissions.


Multi-Polar Alternator System

The adoption of a multi-polar alternator enables the generation of more efficient, high frequency 3-phase AC current that the inverter than turns into single phase.  The high efficiency alternators on a Yamaha Inverter achieve a much lighter and more compact generating unit than conventional 2-pole rotor type alternators.


Smart Throttle

Yamaha's Smart throttle feature automatically adjusts the engine speed to precisely match the energy load.  this means much quieter, more efficient engines that run and last longer.


Unbeatable Noise Block

Yamaha's Noise Block feature, an acoustically engineered sound reduction system , utilises various sound absorbing materials, moulded cases, an intake silencer, fibreglass insulation, plus newly designed mufflers and fans to provide virtually silent running while maintaining the highest quality performance.


Quiet Muffler & Low Oil Shut-off

At the heart of every generator is a strong Yamaha engine that delivers powerful and consistent performance, that's so quiet you'll forget its running.  Every generator includes an approved spark arrestor and a low oil shut-off system for long life and added peace of mind.


FEATURES
BENEFITS
Newly designed exterior and compact, lightweight, inverter unit reduces weight to 12.7kgs.
Lightest weight generator in its class.
Inverter system with Pulse Width Modulation (PWM) control.
Industry leading system produces higher-quality and cleaner electricity. Results in pure sine wave as clean or cleaner than commercial power and can operate products with built-in microcomputers.
Noise Block. Acoustically designed sound reduction system.
Moulded casing, noise-absorbing glass wool construction and a newly designed muffler produce unbeatable noise reduction.
Long Run Time.
Runs continuously for up to 12 hours without refueling (at 1/4 load with "Economy Control" function on).
Smart Throttle.
Load sensing throttle control. Automatically adjusts engine speed to precisely match load, resulting in greater fuel efficiency and noise reduction.
12 Volt DC Output (Battery Charging Cables Included).
Recharge 12 volt batteries for RV, auto, marine, aircraft.
Exclusive Dual Coil Alternator Stator.
Lower engine speed. Reduced noise, fuel consumption and engine wear.
Centralised Control Panel.
Control panel enables easy access to controls.
Fuel Petcock.
Reduces carburettor contamination by turning off petrol flow and allowing the carburettor to run dry.
OHV 50cc Engine (overhead valve).
Provides improved efficiency, increased reliability, low oil consumption and noise-reducing operation.
Large Fuel Fill Access.
Wide mouth fuel fill reduces spilling and overflow during refueling.
48 month* Manufacturer's Warranty.
Peace of mind with full support. *For personal or recreational purposes. 12 months from date of original purchase for professional or commercial use.

Specifications subject to variation without notice.

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