Honda 6500- Guy HoltHonda 6500eu
Posted 30 January 2013 - 03:30 PM
Compared to your system.
Posted 30 January 2013 - 08:19 PM
Hey Guy, I've read all your posts on the small gensets but wanted to get your thoughts on the difference between the standard 60amps bates modification (http://www.multiquip...tiquip/PSG6.htm) Compared to your system.Thanks.
MQ is doing the same modification to the Honda EU6500is that we did until we developed our present approach – so I am quite familiar with the differences. The 120V/60A Bates receptacle on the MQ PSG6 does not give you a full 60 Amps. In their modification, the Bates circuit is fused at 50 Amps so that you cannot draw more than 6000 Watts of peak load from it. And, like all Honda EU6500is generators configured for the US market the continuous rated load (loads lasting more than 30 minutes) is 5500 Watts or 45.8 Amps (see the spec table below from the MQ PSG6 broschure.)
We take a very different approach with our modified Honda EU6500is. What we do is access the additional power (7650W) that is built into the base model of the Honda EU6500is generator for the 230-240V markets around the world that is not available in the US configuration of the generator because of our National Electrical Codes.
We then step down this 7650W/240V output to 120V with our 60A Transformer/Distro to give you the full power capacity, that is built into generator for the world market, in a much larger 60A/120V circuit capable of powering larger lights or more smaller lights than their modification permits. Besides being able to power larger lights, our system has a number of other benefits:
Single Large 60A/120V Circuit
Simplifies Electrical Distribution
Cushions the Impact of Large HMI & Tungsten Heads
Compatible w/ Standard Distribution Equipment
Reliable Operation of the Arri 1800W Baby Max
Brings Honda EU6500is into Compliance w/ OSHA Regs
Enables use of Film Style GFCIs
From a safety standpoint, the last two have got to be the greatest benefits to using our 60A Full Power Transformer/Distro with the Honda EU6500is Generator. As is true of all Floating Neutral generators, the Honda EU6500is does not meet OSHA requirements for use on work sites out of the box. But, since Transformers bond the Neutral to Ground on the secondary load side, they meet that OSHA requirement that the EU6500is alone does not. For the same reason GFCIs will also operate reliably when used on a step-down Transformer/Distro, even when the power is being generated by a Floating Neutral generator like the EU6500is. So, to bring the Honda EU6500is generator into full OSHA compliance, you only have to use a GFCI, like a 100A Shock Block, with our 60A Full Power Transformer/Distro (use this link for a detailed explanation of OSHA requirements and why almost all portable generators do not meet them.)
A 100 GFCI with our 60A Transformer/Distro meets OSHA requirements
for use of a Honda EU6500is generator on work sites.
Another big advantage to using our 60A Full Power Transformer/Distro with a Honda EU6500is is that it enables you to place the generator further away while your plug-in points remain conveniently close to set. The Honda EU6500is is so quiet, that to record sync sound without picking up any generator noise, all you need to do is add 200' – 300’ of heavy duty 250V twist-lock cable between the generator and the transformer/distro. This is usually enough cable to place the generator around the corner of a building, or to run it out of a van or truck - which is usually all the additional blimping you need with these generators. The heavy-duty 250V twist-lock cable eliminates multiple cable runs to the generator; as well as the voltage drop you would have using standard electrical cords. To assure full line level (120V) on set, our 60A Full Power Transformer/Distro is designed to compensate for the slight line loss you will have over an extended cable run. That is, it is designed to slightly boost the voltage on the load side (secondary). For instance, if you were to plug the Transformer/Distro directly into the generator and feed the supply side (primary) of the transformer with 240 volts from the generator, 127 volts would come out on the secondary side where you plug in the lights. This slight boost compensates for the slight line loss that is unavoidable over a long cable run and enables you to place the generator further from set where you won't hear it, yet assures that the supply voltage on the secondary side of the transformer does not drop too low.
A good example of how our Transformer/Distro makes it possible to record clean audio tracks even under the worst of conditions is the indie short "Toothbrush." In this story of mistaken identity produced by Guymanly Productions, a pivotal scene takes place in the middle of a near vacant parking lot of an all night convenience store. With no building or other sound barrier within a reasonable distance to block the sound of the generator, Gaffer Aaron MacLaughlin had no recourse but to put it behind their grip truck as far from set as possible. As you can see from the photos below, he ran 300' of twist-lock extension cable from the generator to our Transformer/Distro hidden behind a newspaper box. From the Transformer/Distro he then ran 200' of 6/3 Bates Extension to set where he broke out to 20A Edison receptacles using a 60A snack box. While running the generator near full capacity with a lighting package that consisted of three 1200W HMI Pars and two 1k Baby Quartz Fresnels, he experienced no appreciable voltage drop on set even after a 500' cable run because our Select Transformer/Distro was able to compensate for both the line loss of the cable and voltage drop of the generator under near full load.
Left: Scene in parking lot. Center: Transformer/Distro hidden behind newspaper box (set 200' in distance.) Right: Generator baffled by truck (Transformer/Distro 300' in distance.)
This example shows how the variable boost of our Select Transformer/Distros, not only enables you to place the generator further from set where you won't hear it, but also assures that the supply voltage on the secondary side of the transformer does not drop too low. By comparison, had Aaron run 500' of standard 14 Awg electrical cord he would have experienced a line loss alone of 24.5V. With that severe a voltage drop, his HMI ballasts would probably have cut out from low voltage as he added additional loads on the generator. Without the line-loss compensation of our Transformer/Distros, he would have had to move the generator closer to set where it would be picked up on the audio tracks.
Arri M40 4k HMI with Max Reflector & 1.2ks HMI Pars powered from 30A/240V
dryer outlet through step-down transformer/distro for Bose still shoot.
Don’t forget that our 60A Full Power Transformer/Distro also enables you to access more power on location from common 240v household outlets as well(use this link - http://www.screenlig...on Wall Outlets - for a details.) Common 240V sources found on interior locations include Range Plugs, Dryer Plugs, and special receptacles installed for Window Air Conditioners. By giving you access to more house power as well, our system is more versatile.
You can see that the addition of our 60A Full Power Transformer/Distro adds a lot of benefits to our system that are not available with their modification. Regardless, in the end, it comes down to how many lights the generator is capable of powering. Our modified Honda EU6500is Inverter Generator with our 60A Full Power Transformer/Distro is capable of powering an Arri M40 (w/2.5kw globe) along with the 1200, 800 Pars of our HD Plug and Play Pkg., plus a couple of Parabeam 400s, a couple of Parabeam 200s, and a Kino Flo Flat Head 80. I challenge any other system to do the same.
Guy Holt, Gaffer, New England Studios, Lighting & Grip Equipment Rental & Sales in Boston