Victron VE. Direct to USB Interface
Victron VE. Direct to USB Interface Original price was: $33.00.Current price is: $28.05.
Back to products
Victron BlueSmart IP67 Charger 12VDC - 13AMP - UL Approved
Victron BlueSmart IP67 Charger 12VDC - 13AMP - UL Approved Original price was: $147.00.Current price is: $124.95.

Victron Autotransformer – Split Phase 120/240V – 100AMP

Original price was: $599.00.Current price is: $509.15.

VICTRON AUTOTRANSFORMER 120/240V-100A

Free  Shipping  on  all orders  over $99*

Out of stock

*Excludes AK, HI, International,  Truck Freight, Oversized and Hazardous items.

SKU: 82998 Category: Brand:
Description

Autotransformer – Split Phase 120/240V – 100AMP

The Autotransformer: for step up, step down and split phase balancing An autotransformer can be used for step up, step down and split phase output balancing purposes. While the step up and step down functions are fairly straightforward, split phase output balancing may require some more attention. 

Consider for example a 30A 120/240V split phase supply. The supply could be the grid, a generator or two stacked inverters. Some of the loads connected are 240V, others are 120V. On each 120V leg the load should not exceed 30A. The problem is that as soon as 120V loads are connected, the two legs will show a different current. This is because the 120V loads on the two legs will never be balanced. A 120V 1200W hairdryer, for example, will draw 10A from one leg. A 120V washing machine could even draw in excess of 20A from one leg. Between the two legs the difference in current, or current unbalance, will therefore often be 20A or more. This means that the 30A supply will not be used up to its full potential. By the time one leg draws 30A, the other leg may be drawing no more than 10A, and increasing the 240V load, for example, will result in an overload of one leg while the other leg still has spare capacity. Theoretically, the total power that can be drawn from a 30A 120/240V supply is 30 x 240 = 7,2 kVA. In case of 20A unbalance, the practical maximum will be 30 x 120 + 10 x120 = 4,8kVA, or 67% of the theoretical maximum. The solution is an Autotransformer. By leaving the neutral of the split phase supply unused, and connecting an Autotransformer to create a new neutral, as shown in figure 1, any load unbalance is ‘absorbed’ by the Autotransformer. In case of a 30A supply, the load can be increased to 7,2kVA, and a 20A load unbalance will result in one leg supplying 40A, and the other leg 20A. The 20A difference will flow through the neutral and the windings of the Autotransformer. The current through both 120V wires of the split phase supply will be 30A. 

Temperature protected In case of overheating, the Autotransformer is disconnected from the supply. Reset is manual. Ground relay for use with Multi or Quattro Inverter/Chargers included When operating in inverter mode, the neutral output of the inverter/charger must be connected to ground to guarantee proper functioning of a GFCI. In case of a split phase supply the neutral must be grounded. For this purpose a grounding relay is built in the autotransformer’s enclosure. The relay is controlled by the 230/240V Multi or Quattro. (The internal grounding relay in the 230/240V Multi or Quattro must be disabled) 

An alternative to stacked inverters The alternative to stacking two 120V inverters to provide a 120/240V split phase supply is a 240V inverter with an additional Autotransformer.

Warranty Info

WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Please contact your dealer for any returns, repairs or support issues related to this product.

Submit your review
1
2
3
4
5
Submit
     
Cancel

Create your own review

Solar Supply House
Average rating:  
 0 reviews
Additional information
Weight 30.55 lbs
Dimensions 20 × 13 × 8 in
Brand

Victron Energy

Shipping & Delivery

Free Shipping Special

Any order of $99.00 or more qualifies for free shipping.*   This includes the entire order, no matter the size or weight*.

Orders under $99.00 can select any shipping method that is presented in the cart starting at $8.95 for 3-7 day delivery.

Any  order over  $99.00  gets  free shipping  or can  upgrade  the  shipping method to any  time/rate in the  cart for  the entire order.

For  example:  you can  upgrade  from  Free  Shipping   to  Two Day  Air for  only $16.95. ENTIRE ORDER!

Flat  Shipping rates are:

$8.95 Flat Rate. 3-7 Business days for your entire order. Our shipping systems determines the best method which can include First Class mail to Fed Ex Ground.

$9.95 Flat Rate Ground. Usually, Fed Ex Ground. Delivery in up to 3 business days, for your entire order.

$16.95 Flat Rate Two Day Air. Delivery in Two business days, for your entire order.

$49.95 Flat Rate Next Day Air. Delivery the next business day, for your entire order.

All Flat Rates are INCLUSIVE of your entire order, no mater the size or weight.

*Excludes Alaska, Hawaii, International, Oversized/Heavy items that ship Truck Freight or Hazardous items (LiFePO4 Batteries).

Contact us for rate quotes to AK, HI or International

Hazardous and Oversized Truck rates are calculated in the cart.

Quick Specs

Amperage = 100a