With twenty years of experience, we manufacture transformers in days, not weeks. Our transformer range includes standard and non-standard single phase transformers with AC or DC outputs (1VA to 500 kVA) and three phase transformers with AC or DC outputs (50VA to 2 mVA).
We also offer: Single to three phase converters; Toroids; Enclosures; Frequency and voltage converters; UPS systems; 110v site equipment; Chokes; Engravers and Routers as well as commercial design software
In addition to our standard and bespoke products, we offer control panel design and manufacture, rewind service and complete engraving and routing services. We provide technical advice and support for all our products as well as consultation and initial design services for our bespoke products.
We offer a competitive pricing structure and fast turnaround, with large quantities of finished and near-finished standard stock as well as raw materials kept on hand. We can give immediate quotations in most situations.
Our company was formed in 1991 and we currently have five fully automated winding machines for high production runs, as well as five non-automated winders we use for small production runs. In addition, we have several automated lamination stacking machines. We have two factories in Peterborough, which enable us to fulfil most orders within 3 to 5 days, and we are continually investing in new machinery to improve efficiency and productivity and lower prices.
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With a department dedicated to non-standard and small quantity transformers, we can offer a bespoke service with fast turnaround; usually two to three days. In case of breakdowns in which one of our stock transformers is not suitable, we can usually rush deliver a custom built transformer in an even shorter time.
We can supply any specification within our manufacturing scope, including AC, DC, single phase or three phase transformers with any voltage or current, variable voltage and multi-tapped windings. We can provide stud terminals, screw terminals, stud terminals, solder tags and fly leads as well as fuses, MCBs, RCDs and thermal cutouts. Other features we can supply include, but are not limited to:
Isolators, selector and reset switches
Flexible conduit, cables, sockets, plugs and glands
Lamp indicators and volt, amp and frequency meters
Enclosures, racks, frames and panels
Chokes
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We offer a range of single phase panel transformers with completely protected shrouded terminals. We can incorporate company logos into the terminal shroud if desired. The voltage and position are indicated by individual markers.
We also supply a single phase panel transformer with rail mounted, finger proof, individually labelled terminals rated to IP20.
Our Premier range of panel transformers feature low loss high grade steel construction, 4 point fixing, added versatility with primary voltage tabs, shrouded screw terminals with individual voltage markers and colour coded shrouds, and winding to EN60742. A wide range of primary and secondary voltages are available as standard, and non-standard voltages can be specified.
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We supply a wide range of encapsulated PCB mounted transformers, with large stock quantities of standard voltages of 1va to 30va kept ready for immediate dispatch by next-day courier.
Transformers manufactured to a variety of national and international standards are available, and we can provide any voltage with any pin configuration.
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Our budget priced transformers include a range of small clamped transformers with a full wrap-around clamp, two fixing holes and solder tag terminals. These are available from 6va through 100va. We also have a second range of transformers that is similar to the clamped range, but with screw terminals rather than solder tags.
We also offer a budget style panel transformer that is fitted with screw terminals. This transformer can be mounted with our standard universal fixing frames.
Additionally, our Universal Range of budget-priced general purpose transformers from 25VA up to 10 kVA are manufactured to EN 60742 standards, feature screw terminals that will take 0.25mm2 through 6mm2 cable, and colour-coded terminal shrouds with individual position markers. This range has full earth screen on sizes above 1kVA, multi-orientation fixings on units above 100va, and multi-point fixings on units above 100VA.
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We manufacture a comprehensive range of three phase transformers from 50VA up to 2MVA.
We supply double wound 250kva transformers featuring primary taps of ± 5% and ± 10% as well as auto transformers which are cheaper and smaller than double wound units.
Stock transformers are same-day dispatched on an overnight carrier, and we can fulfil unusual requirements quickly, usually within two to three days with no premium price.
We can provide virtually any size of auto transformer, depending upon the voltage. Additionally, we can incorporate any type of termination, including fused in and outputs, shrouded terminals, screw terminals, rail and din rail mounted, fly leads and studs.
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We keep a large stock of toroids in various specifications ready for same-day dispatch via next-day couriers. Additionally, we can manufacture toroids to any specification from 10va up to 1kva. Our facilities enable us to offer minimal manufacturing lead times on non-standard custom orders.
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We manufacture site transformers including tool transformers from 500va up to 6.3kva with any socket arrangement. We also offer a 10kva site transformer with four 16 amp sockets and 2 32 amp sockets with an IP67 MCB window.
Additionally we manufacture a water-proof wall-mounted 3kVA 100v transformer designed for use in flood-prone or dusty areas. It features a fully welded enclosure with IP66 rating, 20mm gland hole and IP67 16A 3-pin panel socket and 20A socket isolator. All breakers are protected by an IP67 window. This model is available in a variety of inputs and primary voltages.
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Single or three-phase inputs can achieve DC outputs; however three-phase inputs produce higher currents and far smoother DC. We can manufacture DC transformers to any voltage upon request.
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We can manufacture any size of single or three phase choke to order, using our inductance testers to achieve your exact specifications.
We offer a complete range of enclosed and open mains line filters, covering single and three phase up to 150 amps.
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We provide a complete rewind service. Although this normally has a slower turn-around time and is usually more expensive than a new transformer, it is sometimes the only option. This can be the case, for example, if the VA rating or voltages are not known, terminals are not labelled or the transformer size is critical.
If we have the appropriate coil bobbins (formers) in stock, we may be able to turn around a rewind in as little as two days, but normally we need to make a new bobbin or adapt one of our stock bobbins. Additionally, we frequently need to repair laminations, bobbins and mountings, so although it may not be possible to return a rewind with an “as new” appearance in every case, the functionality of the equipment itself will be restored.
We can provide a full failure report with photos upon request with any rewind.
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We offer a comprehensive selection of standard enclosures in four main styles with a variety of mounting options and IP ratings ranging from IP22 to IP67. Each style is available in several sizes, and we can also provide custom built enclosures.
Wall Box - Available in 8 different sizes and usable as a floor, bench or wall mounted enclosure, this ventilated IP43 enclosure can house from 25VA to 10kVA single phase and from 50VA to 6kVA three phase. The standard colour is Hammer Grey.
Floor Box - Available in 16 different sizes, rated to IP44 and IP54 and suitable for 2kVA to 500kVA three phase as well as larger single phase transformers starting from 15kVA, this enclosure is free standing and features two detachable gland plates. The standard colour is grey.
Low Voltage Box - Our IP22 low voltage enclosure, available in 6 sizes, is ventilated and suitable for bench or wall mounting. It will house transformers from 25VA up to 1.5kVA. The standard colour is white.
Portable Box - Our portable steel enclosure comes in 4 sizes and is perfect for use in demanding environments that require a durable enclosure. It will accommodate single phase transformers from 500VA to 5kVA with an IP rating of IP55. The standard colour is yellow.
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It would be impossible to list all the options we can fit to transformers, as we can meet almost any requirement. Simply tell us what you need and we will be happy to accommodate.
Here are only a few of the options we can supply to meet your transformer needs:
Measurement indicators: volts, amps, temperature, frequency and hours
Enclosures: portable, floor mount, wall mount and freestanding
Protection: fuses, thermal cutouts, MCBs, MCCBs, RCDs and RCCDs
Outlets: Panel, domestic and fused sockets and glands, 110v and 240v 3-pin, 415v 4-pin and 5-pin
Controls: tap selectors, switches and reset switches, isolators, key operated switches, screens, finger shrouds and protective IP67 windows
Terminals: stud terminals, screw terminals, solder tags and fly leads
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We can supply you with engraving and routing machines, offering four engraving machines with working areas of 300mm2 up to 600mm2, and four sizes of heavy duty routing engraving machines with larger working areas. These are computer controlled machines and software is included.
If your requirements do not extend to the purchase of engraving or routing machines for your own premises, we can offer a complete engraving and routing service. We can engrave terminal boards, make bespoke bobbins and formers, or route any shape in almost any material.
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http://www.jmstransformers.co.uk
