Any condition, any size
Impedance and Fault Current: The Number Buyers Ask For Second
A working guide for Ohio sellers: what decides the number and how the unit leaves.
What we buy
What we buy here
The short version of Impedance and Fault Current: The Number Buyers Ask For Second: read the tag, check the oil, and know who owns the unit before it moves. Remanufacturing keeps the footprint, and the footprint is often the reason the unit cannot simply be replaced. The question that decides most purchases is not what the unit is but where it has to go next.
If you do only one thing, photograph the nameplate and the cabinet in good light. A buyer who cannot say where the unit will go is a broker, and brokers add a day and a deduction. A unit in a building that is coming down is a different problem from a unit in a plant that is staying.
Who we buy from
Six kinds of seller, one desk
- Recyclers
- Electrical contractors
- Equipment dealers
- End users
- Demo contractors
- Distributors
Fast offers
A nameplate photo is usually enough to price a unit the same day.
Dedicated logistics
We arrange the crane, the permits and the flatbed, not you.
No broker fees
You are dealing with the buyer, so nothing is shaved off the offer.
How it works
Six steps from your yard to the money
- 01
Take pictures
The nameplate, the cabinet interior and the tank in daylight. Three photographs are usually enough to place a unit in the right class and the right price band.
- 02
Send them to us
The form on this page, a text or an email all reach the same desk. Include the city, the access and any deadline the site is working to.
- 03
Review the offer
A buyer reads the photographs, asks one or two questions and sends a written offer with the assumptions stated, so nothing changes on the day.
- 04
We schedule freight
Crane, flatbed and permits are booked around your access. You get a date and a window, and we carry the cost of getting it right.
- 05
Testing on arrival
Winding resistance, megger and turns ratio, plus oil analysis where the unit is liquid filled. The results decide the final number, and you see them.
- 06
Get paid
Payment is released on the agreed terms once the unit is received and tested, by check or ACH. No retention, no sixty-day terms.
What we handle for you
The parts sellers dread, done for you
Rigging
Crane and forklift arranged around your access, not the other way round.
Oil containment
Bunds, absorbent and disposal handled before the unit moves.
Bill of sale
A clean title document for your records, signed on collection.
PCB paperwork
Pre-1979 units get the testing and the manifest they need.
Guide
What it describes
Impedance is the opposition a transformer presents to current, expressed as a percentage of the voltage needed to drive rated current through a short circuit. A 5.75 percent impedance unit limits fault current more than a 4 percent unit of the same rating. The figure sits on the nameplate and it is tested rather than calculated, which is why it varies between manufacturers.
Details that seem trivial on the phone become decisive on the pad, which is why they are asked about early. A partial assembly is bought on the assumption that something is missing, because it usually is.
Why it matters downstream
Switchgear has an interrupting rating, and a low-impedance transformer can exceed it. Replacing a 5.75 percent unit with a 4 percent unit of the same kVA can turn adequate protection into inadequate protection. Voltage regulation also changes with impedance, so a low-impedance unit sags less on motor starting.
A buyer who works the whole state can move a unit to whichever plant needs it, which is why the coverage matters. A unit with a clean surround has usually been maintained by somebody who cared, and that shows in the oil.
At purchase
A buyer needs the impedance to know whether the unit fits an existing protection scheme. A unit with an unusual impedance has a narrow market, and the offer reflects that. If the tag is gone, an impedance test recovers the figure and it is inexpensive.
The trade-off
Checklist for impedance and fault current: the number buyers ask for second
Questions about impedance and fault current: the number buyers ask for second
Related guides
Get started
Get an offer in minutes
Five fields and a phone number is all we need to start. We reply the same business day, and a firm number follows the nameplate photo.
(614) 715-3047or send the form and we will call you.
Questions
What sellers ask before they call
Equipment types
Does impedance and fault current: the number buyers ask for second change what a transformer is worth?
A buyer needs the impedance to know whether the unit fits an existing protection scheme. If the tag is gone, an impedance test recovers the figure and it is inexpensive.
Service area
Where does a seller start with impedance and fault current: the number buyers ask for second?
A 5.75 percent impedance unit limits fault current more than a 4 percent unit of the same rating. A number is only as good as the description behind it, which is why the questions are short and specific.
Payment
Is impedance and fault current: the number buyers ask for second part of what a buyer checks on site?
Higher impedance means lower fault current and more voltage sag, which is a design choice rather than a quality difference. Higher impedance means lower fault current and more voltage sag, which is a design choice rather than a quality difference.
More