Three-Sine Portable Power builds construction-rated wheeled power stations purpose built to run induction motors pulling large loads using lithium-iron-phosphate battery power. Three-Sine stations fit through doorframes and are designed to withstand job site abuse.Three-Sine power stations can deliver up to 26 max kW of split, single-phase, or 19.5 max kW of 208 volt 3-phase AC power for up to 100 kWh.The stations easily add to their base capacity by pairing with portable 10, 30, or 60 kWh battery module units. Build a fleet of battery modules to give your team unlimited capacity for powering your job site.Three-Sine operates from and manufactures in Philadelphia, Pennsylvania. We are proud to help power the American construction market from America's birthplace. Call Three-Sine today and talk to us about custom receptacle suites and personalized unit branding.

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WHAT IS POSSIBLE

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What is possible with Three-Sine Portable Power Stations?We sell the products primarily to commercial and industrial contractors because that is where we are able to drive the most value into the market. The induction motors that run concrete grinders and saws are no joke. They rip like hell at inrush, and they need dedicated clean sine waves to get the job done.But think about it; if we purpose-built a power station to run something made by Husqvarna that destroys and forms concrete at scale, what else can you do with it?We are honestly asking the question, and we hope you take seriously the idea that the answer is"Whatever the hell I want with it!"And that is really why Three-Sine exists. There is demand today to run induction motors indoors for commercial construction and large sound and lighting rigs for production crews.The demand for Three-Sine products tomorrow will come from someone reading this. Someone who looks at our products and doesn't think "Cool for a flooring contractor!", but instead is the type of person that is constantly challenging themselves.That person looks at a Three-Sine Portable Power Station and thinks one thing:"My dream needs that to happen"Plain and simple. We make steel and iron boxes that allow you to harness electricity and bend the physical world to your will.You now get to decide what is possible. So please, show us...

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• output boosts

• charging

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• the future

Three-Sine Portable Power Stations provide Alternating Current for their users.The principal specifications for Three-Sine Portable Power stations are each 3S model's max kilowatt (kW) output for any given moment, and the runtime capacity of the system.Battery capacity for Three-Sine systems is measured in terms of kilowatt-hours (kWh). The headline number indicates the number of hours the station can generate 1 kilowatt of output. The 15 kWh prototype will output 5 kW for 3 hours. The flagship 3S-26 runs the same load for 8 hours. A 3S-26 connected to a BM-60 will run that load for 20 hours.Battery modules are connected via Anderson 350 DC ports on the broadside of each Three-Sine product. Each module is provided with an Anderson 350 connector cable.To add capacity, simply wheel a module alongside your main Three-Sine station, power down your station, and use the cord to connect each unit's Anderson port. The inverter system will automatically read the additional capacity upon restart, and you are ready to continue using your equipment.

* Image shows complete Three-Sine receptacle family for demonstration purposes. Scroll down for individual unit suiting.

1. Siemens load center and circuit breakers.
2. 14-gauge steel paneling reinforced and insulated with neoprene padding on each side.
3. 11-gauge slightly-rounded, angled iron framing.
4. Heavy-Duty treaded casters. Fixed-rear, swivel-front.

Three-Sine 3S power stations standardize on ergonomically sound 45" heights and 26" widths - ideal for fitting through any size entranceway. Fork pockets are built in to the iron base-frame and heavy-duty casters rated to at least 3x each unit's weight are flanged to the underside. Dimensional differences occur in the depth of each product's enclosure (shown below as its length in inches), and the unit's weight.Three-Sine stations are engineered to offer the full range of standard split-phase RMS voltage values from 110-250 with dedicated 240 volt, split, and 120 volt receptacles. The 3S-16 and 3S-26-208v stations output 3-phase power in a 208 volt structure. On all Three-Sine products the sine waves are produced with a total harmonic distortion between 2 and 3%.

Each model is displayed below with its standard receptacle layout. For no additional charge, Three-Sine allows customers to fit available receptacles with their fleet's plug-ends. On the CUSTOMIZE page; information is given on how you tell us what you want stacked in the load center, and what to put on the face.Models are paired with suggested Battery Modules to achieve max rated kW output for 4-5 hours.L14-30R Receptacles, deemed critical for their Spider Box connection, are included on all Three-Sine Portable Power Stations.

Receptacles:
250/125v L14-30R
250v L6-30R
125v L5-30R | L5-20R
GFCI Single Gang
8 Poles CustomizableRecommended Battery Module: BM-30

Receptacles:
250/125v L14-30R
250v L6-30R | L6-20R
125v L5-50R | L5-30R | L5-20R
GFCI Single Gang
12 Poles CustomizableRecommended Battery Module: BM-30

Receptacles:
208v L18-50R (Max Duty 3-Phase)
250/125v L14-30R
250v L6-50R | L6-30R | L6-20R
125v L5-50R
GFCI Single Gang
16 Poles CustomizableRecommended Battery Module: BM-60

Receptacles:
2 X 250/125v L14-30R
2 X 250v L6-30R | L6-20R
2 X 125v L5-50R | L5-30R | L5-20R
2 X GFCI Single Gang
24-32 Poles CustomizableRecommended Battery Module: BM-60

^{*208v L18-50, 30, 20 series 3-phase receptacles standard on all 3S-26-208v models}

In trying to figure out what is possible coming from a steel and iron box on wheels that fits through doorframes, we had to get a little creative under the hood. The base 3S-26 model achieves its max 26 kW output via dueling 13 kW inversion systems. Each system's load is monitored on the unit's LCD.The 3S-26-208v is a single inversion system architecture. It is built for large split phase single loads, or dedicated 3-phase 208v applications. It absolutely pushes the limit for what is physically possible within the scope of the Three-Sine design philosophy.A Three-Sine customer would purchase a 3S-26-208v for one or both of the following reasons:1. They have a split, single-phase load > 15 HP that is critical to their operations.
2. They have a 208v 3-phase load > 15 HP that is critical to their operations.The 3S-16 and 3S-26-208v's three-phase conversion process requires a 3-5 minute user operation involving system shutdown, unit access, pushing a button on the inversion system's internal LCD screen, and flipping a phase switch. The process is simple, straightforward, and clearly detailed in the operation manual. We will e-mail you video of the correct procedure being demonstrated, and if you call us, we will FaceTime with you and walk you through it step by step live on the phone. We are here to help!

Three-Sine Battery Modules are simple products. Steel and iron boxes packed with lithium, iron, and phosphate voltage cells with Anderson 350 DC ports for connecting to base units.Keeping with the Three-Sine product philosophy, these simple units provide enormous value to contractors who build strategies around them.10, 30, and 60 kWh worth of LFP cells that immediately flood DC power through the distribution network where it can be inverted to alternating current, and made useful by your crew.BM units don't just add runtime. Below the dimensional art we lay out how Three-Sine Battery Modules expand both the kWh and max kW output specifications for Three-Sine Power Stations.

A Prototype, 3S-12, and 3S-16's rated max kW output is restricted by the DC power distribution architecture. This is a necessary safety feature built into the system to protect the ultimate asset of your life. The enormous battery banks of the 3S-26 and 3S-26-208v allow for those base stations to achieve max system output without modification. In the other Three-Sine stations, adding battery module capacity safely allows for additional AC output from the inversion system and expands the system specifications.Connecting to a BM unit fundamentally changes the system's capabilities. In the tables below, the detail on how max kW output and kWh runtime are expanded through a connected system are shown. This brings to light the full capabilities of Three-Sine Portable Power products.

The philosophy is simple: give your crews reliable options. The Three-Sine product line delivers unprecedented battery power for it's size-class (26 kW, 3-phase capable) so you can run your largest job site tooling, kWh capacity that will run more conventional tool fleets for a full 8-hour day, and modular add-on capacity to give you the best of both worlds.

Three-Sine stations are charged via inlets on the rear panel of each unit. The 240v inlet allows for extremely manageable refill times. The 120v inlet allows charging from any location and preserves the option of a cycle-capacity-maximizing trickle charge.

^{Email [email protected] for more information on LFP cycle capacity and battery maintenance guidelines.}

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^{Three-Sine intends to launch a solar charging array in the first half of 2027. Check back for updates.}

Three-Sine Portable Power Stations are virtually limitless in application within the unit's specifications. They are engineered for handling the most reactive inrush loads with low power factors and high kVa at startup. They can be used to power full buildings, large-scale sound and lighting rigs, or a fleet of 800 lb planetary concrete floor grinders.

Contractor Businesses

Commercial contractors working with concrete are ideal Three-Sine customers often facing tough site conditions with intermittent or no grid power while working in enclosed spaces. Saws, grinders, and dust-suppression long ago moved to induction motors so this work can be reliably done without emissions or noise.

Eliminate the 300 feet of cord and diesel tow-behind in the parking lot from your site plans by utilizing Three-Sine stations right at your work point. Emission and noise-free 3-phase power in arms length of the tool.

Voltage Drops, Sag, and Distortion

Voltage dropping due to cord length is something every contractor needs to be conscious of and plan around to protect their investment in larger tools.For a typical 3-phase tool pulling 30 amps on a 10 AWG extension cord, the voltage drop is roughly 3-5% per 100 feet. Across the distance, the sine waves begin to physically distort in size.Sine wave distortion occurring during voltage drops, is referred to as 'sag'. Distorted sine waves* -- often experienced as a constant factor for power emitted from older or lower tech generators -- are commonly referred to in the field as 'dirty power'.When distorted sine waves meet your tool, additional wattage is needed to re-align the waves and meet the engine's internal AC architecture (three hots, 120 degrees offset); increasing the system's total kVa.EDCO tool specifications standardize on 100 ft. cord lengths due to damage caused by the sine waves sagging as the distance between source and tool increases. Not only are engines receiving fewer amps, they require more effort than designed for to get them.For the largest contractors, being left with zero options on cord length has a meaningful impact on the depreciation table of the tool fleet. Incorporating Three-Sine Stations into your business model doesn't just give your crews options, it allows the accounting department some breathing room, and frees up dollars for reinvestment.240 volt cords longer than 200 feet drop into 3-phase voltage structures similar to the ones produced by 3S-16 and 3S-26-208v Three-Sine Stations; while delivering amperage with less efficiency due to sag.

The floors you build get larger each year. That means the center extends further from an outside power source during grid outages. Terminate the issue, grow your margins, and put long term value back into your business with Three-Sine Portable Power.

In the below table, Three-Sine systems are paired with common load profiles using popular tool models from Husqvarna (Hq), EDCO (Ed), and Hilti (Hi).

Three-Sine products are arranged to demonstrate how the line delivers value to your business -- conventional fleets all day, raw power when you need it, capacity for both.

The modular system eliminates the guesswork. Build a fleet of add-on battery modules and swap them into base units in 30 seconds giving your site limitless capacity.

^{Email [email protected] or call us at 215-309-9277 to talk about individual load profiles.}

Three-Sine Portable Power was incorporated in May of 2026 and this is only the beginning. There aren't products like Three-Sine stations on the market, and we are immensely proud to build and offer them. 26 kW of split and 19.5 kW of 208v 3-phase from batteries on wheels through doors is unprecedented.It isn't why this company was started.3-phase 240 and 480 volt mobile systems are achievable and Three-Sine aims to achieve it. The products are a dedicated engineering project from realization. We are engaged in that project, and we will bring these systems to market.Three-Sine can't achieve our goals without customers who are dedicated to our development, and we can't force that to happen. Offering reliable product that works without bullshit is necessary to our survival. Building relationships with our customers is foundational to our business model.When we say call us to talk about your tool fleet, or FaceTime us to troubleshoot the LCD screen, we mean it.This is what the future looks like to us: You and your crew have spent the day grinding and cutting the floor of an Amazon warehouse. A Three-Sine system gave you 25 kW of continuous 3-phase and 10 kW of continuous single-phase simultaneously all day long. You increase your sq footage and number of passes by 30% because your power source moved with your team as a silent member of it, ensuring the entire fleet has everything it needs. When you needed to switch between large tooling, you didn't need 100's of ft of cord and a transformer because all standard RMS 3-phase voltage values were selectable menu items in the unit's LCD - ten feet from your setup. You refill 20% at the Tesla Supercharge station in the Wawa parking lot while you wait for your hoagie on the way back to the shop. Life is good.We want this to be available to you in 2028. We can't wait to get there. What is possible from a steel and iron box on wheels that fits through doorframes? We are going to find out together.

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Sine wave distortion is a serious issue for a contractor working in large enclosed spaces with portable tooling. Over the last decade, a lot of development has successfully gone into technologies for producing portable sine waves from all sources.Manufacturers like Generac have led the way here and make great products currently matching Three-Sine's 2-3% THD. The problem is twofold:1. The technology didn't exist 10 years ago so even tier-1 manufacturers produce more distorted waves in older models which are commonly rented, or in your fleet currently.2. Production at the source is meaningless when you are 500 feet away from it.This stuff is technical and complicated. With the below imagery, Three-Sine hopes to establish that we live and breath electricity. We are laser-focused on solving niche, but hugely consequential problems like sag damage for contractors, production crews, and anyone who might come across the issue.What you are seeing below are 3 sinusoidal waves of electrons. This is what 3-phase power physically looks like within its voltage structure; 3 hot legs (L1, L2, L3) 120 degrees offset moving simultaneously up and down and in orbit around a central axis point.Single-phase 120 volt power (like what comes from your homes wall outlet) is what is displayed by clicking the 'Single Phase' button. It is created by a single hot leg (L1) producing one sine wave that peaks and valleys within and around its 120 volt structure. 240 volt adds another hot leg (L2) offset by 180 degrees to L1. Split voltage simply adds a 3rd hot leg (L3), but positions it within the L1 and L2 outer orbit. Each leg finds a contact when the waves reach their destination.When you see standardized numbers like 120, 208, 240, and 480 as voltage structure sizes, what is being given is the root mean squared (RMS) value. That is the mean diameter of the structure across the length of its distribution (your tool's cord). When the electricity meets the tool's engine, the contacts are spaced to accept sine waves at standard points depending on the structure.This is where the damage occurs.Perfect sine waves are theoretical only so the architecture expects distortion. However, beyond a certain threshold the engine needs to enact a mechanism to physically correct the wave's positioning. This operation increases the kilovolt-amperes (kVa) in the system which is the measurement of apparent power.Every AC electrical system will have two governing characteristics regarding output.1 Kilowatts of work produced. This is the headline constant output rating (11,200 watts on a Husqvarna PG 8 S planatery grinder).2 Total kVa. This number tells you the entire wattage output of the system and includes apparent factors like sine wave correction in its calculation.KVa can never be less than kW, but the larger the positive divergence, the less efficient your tool is running. Distortion is so consequential because it is a constant factor -- every single electron needs to have its positioning corrected.Select a power source to see the harmonic distortion visualized at various tiers. The visual should assist in helping understand what is physically happening at the contact points of your tool's engine.

If some of these words made sense and others didn't, but you are still curious; please email [email protected] or call us. Let's talk about exactly what you are running, and we can break down the technical stuff piece-by-piece centered around your operations. We are here to help!

CUSTOMIZATIONS

receptacles

Three-Sine Portable Power has domain expertise in battery capacity, DC power distribution, DC:AC inversion, and delivering AC power to receptacles in a construction rated system that will stand up to job site hell.We have zero knowledge or expertise in exactly how you successfully built and run your business. We want your Three-Sine product to be purpose-built by you to run the specific tool and equipment fleet you have invested in.Design a custom outlet suite for each 3S unit you purchase. Select the receptacles that work for you and fill 8 poles on the load center of a Prototype, 12 poles on a 3S-12, 16 poles on a 3S-16, or 24 to 32 poles on 3S-26 models. Include your selection when placing your order, and you will receive a mockup image of the front face of your three-sine power station that will be shipped to you.There is not an additional charge for this.You strategize your job site. What tools run where, and when. Optimize that strategy with Three-Sine customizable receptacle suiting.

^*3Φ

branding

Three-Sine also understands the importance of protecting your equipment from theft, and visually representing your business through branding.We will print your company's name and/or logo prominently on the broadside of each Power Station or Battery Module at no additional cost.Email an image file of your company's branding to [email protected], and we will reply with a mockup of what your custom-built station will look like when it runs your tools.

^{Interested in displaying personalized artwork? Awesome! If you own it or it isn't trademarked, and a 10-year-old can look at it, we'll print it!}

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PLACE AN ORDER

Every Three-Sine product is built as ordered and carries a 4-6 week lead time. We intend to close this gap before 2027, but right now we are a small company obsessed with perfection. Every Three-Sine product is available to be ordered in one of the following ways:

We understand these are significant purchases. When you contact us we will be responsive, and we are dedicated to building strong relationships with our customers. Three-sine products are backed with a 1-year warranty from the point of customer receipt.Three-sine power stations can potentially change the way you run your business, and it is our job to prove that to you.

3-Sine Portable Power  |  215-309-9277  |  [email protected]

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