Epoxycast Coil Transformers

At AFP Transformers, our Epoxycast transformers provide several benefits to traditional dry type transformers. Epoxycast transformers can withstand high power surges as a result of higher BIL ratings. The coils are directly cast into the mold under pressure, instead of using vacuum pressure impregnation to apply resin to the coils. The coil is deeply embedded in the epoxy material, protecting coils from contaminates and holding the windings in place during power surges. The secondary coils are standard dry type processed with a polyester resin in VPI process.

Epoxy material is strong and requires little maintenance. As a dry type transformer, there are no hazardous liquids or materials to pose a safety risk. Since they do not contain hazardous materials, Epoxycast transformers do not require transformer vaults that limit placement options and significantly add to the cost of liquid transformers.

AFP Transformers manufactures a wide range of transformers from 600V to 34.5 kV voltage classes. Epoxycast transformes are used in a variety of application including control power transformers, pad-mount distribution transformers, and neutral grounding transformers used in utility and cubicle applications. For additional information about this product see the table below, or Contact Us directly.

5kV to 15kV Class EpoxyCast ITI Part Cross Reference Request a Quote

EpoxyCast Transformer Capabilities

Transformer Type

Control Power Transformers
Neutral Grounding Transformers
Distribution Transformers
Power Transformers

Features

Non-flammable
Superior Short Circuit Resistance
Low/No Maintenance Required
Leak Proof
No Hazardous Materials

Power Type

Single Phase
Three Phase

Voltage Class

600 V
5 kV
15 kV
34.5 kV

Construction: Cast Coil (Epoxycast®)

Winding Material

Copper Wire Standard
Additional Configurations on Request

BIL Rating: 60kV to 200kV
Dependent on Transformer Voltage Rating

Testing & Inspection

100% Product Testing
IEEE C57.12.91 Special, Standard, or Custom
Testing Parameters Stored

Voltage
Current
Watts
Vars
VA
Power Factor
Efficiency

Applied Potential (HiPot) Testing to 100 kV AC RMS
BIL capability up to 300 kV
Partial Discharge Testing

Up to 100 kV applied potential
In excess of 70 kV induced potential

Customer Specified Testing as Requested

Stocking Programs

Kanban
JIT Shipping
Min-Max
Custom

Production Volume

Prototype
Low Volume
High Volume

Lead Time

3 to 6 Weeks Typical
Expedited Turnaround in as little as 1 Week

Additional Information

Industry Focus & Applications

Switchgear Manufacturers
Motor Control Center Manufacturers
Utilities
Power Factor Correcting Equipment Manufacturers
Power Conditioning Equipment Manufacturers

PDU manufacturers
UPS manufacturers
Voltage Regulator Manufacturers
Data Center CPUs

Industrial Heating Equipment Manufacturers

Furnaces
Induction Heating Power Supplies
RF and Microwave Heating Machines

Mining Machine Manufacturers
Waste Water Treatment
OEM Machine Manufacturers

Machine Toolmakers
Packaging Machines
Semiconductor Machine Manufacturers
Web Processing Machine Manufacturers

Industry Standards

IEEE C57.12.01
General Requirements for Dry-Type Distribution & Power Transformers, Including Solid Cast
IEEE C57.12.91
Standard Test Code for Dry-Type Distribution & Power Transformers
UL 508
UL Standard for Industrial Control Equipment
UL 506
UL Standard for Specialty Transformers
UL 1561
Industry Standard for Dry Type General Purpose & Power Transformers, 600 Volt Class
UL 1562
Industry Standard for Dry Type General Purpose & Power Transformers, Medium Voltage, Up to 34.5 KV
NEMA ST 20
Standard for Dry Type Transformers for General Applications
NEMA TR1
Test Code for Transformers, Regulators & Reactors
NEMA ICS 2
Industrial Standard for Controllers, Contactors, Overload Relays & Related Equipment. (Motor Starting Autotransformers & Reactors)

International Standards
IEC 60076
Power Transformer & Reactors – Medium Voltage
IEC 61558
Power Transformers & Reactors – 600 Volt Class
CE Certification to IEC Standards

Marine Standards
ABS
American Bureau of Ships
DNV
Det Norske Veritas

Single Phase

Below with + 7.5% and -7.5% Primary taps and 120v / 240v Secondaries
Primary Voltage	14,400	13,800	13,200	12,470	12,000	8,320	7,620	7,200	4,800	4,160	2,400	Outline
BIL Rating	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	60 kV	60 kV	60 kV	Outline
5 kVA	410304	410306	410308	410310	410312	410314	410316	410318	410320	410322	410324	EpoxtCast 5kVA 5_15kV Class 1Phase Master Outline
10 kVA	410404	410406	410408	410410	410412	410414	410416	410418	410420	410422	410424	EpoxtCast 10kVA 5_15kV Class 1Phase Master Outline
15 kVA	410504	410506	410508	410510	410512	410514	410516	410518	410520	410522	410524	EpoxtCast 15kVA 5_15kV Class 1Phase Master Outline
25 kVA	410604	410606	410608	410610	410612	410614	410616	410618	410620	410622	410624	EpoxtCast 25kVA 5_15kV Class 1Phase Master Outline
37.5 kVA	410704	410706	410708	410710	410712	410714	410716	410718	410720	410722	410724	EpoxtCast 37.5kVA 5_15kV Class 1Phase Master Outline
50 kVA	410804	410806	410808	410810	410812	410814	410816	410818	410820	410822	410824	EpoxtCast 50kVA 5_15kV Class 1Phase Master Outline
75 kVA	410904	410906	410908	410910	410912	410914	410916	410918	410920	410922	410924	EpoxtCast 75kVA 5_15kV Class 1Phase Master Outline
100 kVA	411004	411006	411008	411010	411012	411014	411016	411018	411020	411022	411024	EpoxtCast 100kVA 5_15kV Class 1Phase Master Outline
Below with + 5%; +2.5% and -2.5%; -5% Primary taps and 120v / 240v Secondaries
Primary Voltage	14,400	13,800	13,200	12,470	12,000	8,320	7,620	7,200	4,800	4,160	2,400	Outline
BIL Rating	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	60 kV	60 kV	60 kV	Outline
5 kVA	410305	410307	410309	410311	410313	410315	410317	410319	410321	410323	410325	EpoxtCast 5kVA 5_15kV Class 1Phase Master Outline
10 kVA	410405	410407	410409	410411	410413	410415	410417	410419	410421	410423	410425	EpoxtCast 10kVA 5_15kV Class 1Phase Master Outline
15 kVA	410505	410507	410509	410511	410513	410515	410517	410519	410521	410523	410525	EpoxtCast 15kVA 5_15kV Class 1Phase Master Outline
25 kVA	410605	410607	410609	410611	410613	410615	410617	410619	410621	410623	410625	EpoxtCast 25kVA 5_15kV Class 1Phase Master Outline
37.5 kVA	410705	410707	410709	410711	410713	410715	410717	410719	410721	410723	410725	EpoxtCast 37.5kVA 5_15kV Class 1Phase Master Outline
50 kVA	410805	410807	410809	410811	410813	410815	410817	410819	410821	410823	410825	EpoxtCast 50kVA 5_15kV Class 1Phase Master Outline
75 kVA	410905	410907	410909	410911	410913	410915	410917	410919	410921	410923	410925	EpoxtCast 75kVA 5_15kV Class 1Phase Master Outline
100 kVA	411005	411007	411009	411011	411013	411015	411017	411019	411021	411023	411025	EpoxtCast 100kVA 5_15kV Class 1Phase Master Outline

Three Phase

Above with + 7.5% and -7.5% Primary taps and 120v / 240v Secondaries
Primary Voltage	14,400	13,800	13,200	12,470	12,000	8,320	7,620	7,200	4,800	4,160	2,400	Outline
BIL Rating	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	60 kV	60 kV	60 kV	Outline
15 kVA	460304	460306	460308	460310	460312	460314	460316	460318	460320	460322	460324	EpoxtCast 15kVA 5_15kV Class 3Phase 208v Master Outline
30 kVA	460404	460406	460408	460460	460412	460414	460416	460418	460420	460422	460424	EpoxtCast 30kVA 5_15kV Class 3Phase 208v Master Outline
45 kVA	460504	460506	460508	460510	460512	460514	460516	460518	460520	460522	460524	EpoxtCast 45kVA 5_15kV Class 3Phase 208v Master Outline
75 kVA	460704	460706	460708	460710	460712	460714	460716	460718	460720	460722	460724	EpoxtCast 75kVA 5_15kV Class 3Phase 208v Master Outline
112.5 kVA	460904	460906	460908	460910	460912	460914	460916	460918	460920	460922	460924	Consult Sales for Outline
150 kVA	461004	461006	461008	461010	461012	461014	461016	461018	461020	461022	461024	Consult Sales for Outline
225 kVA	461104	461106	461108	461110	461112	461114	461116	461118	461120	461122	461124	Consult Sales for Outline
500 kVA	461304	461306	461308	461310	461312	461314	461316	461318	461320	461322	461324	Consult Sales for Outline
Above with + 5%; +2.5% and -2.5%; -5% Primary taps and 120v / 240v Secondaries
Primary Voltage	14,400	13,800	13,200	12,470	12,000	8,320	7,620	7,200	4,800	4,160	2,400	Outline
BIL Rating	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	95 kV	60 kV	60 kV	60 kV	Outline
15 kVA	460305	460307	460309	460311	460313	460315	460317	460319	460321	460323	460325	EpoxtCast 15kVA 5_15kV Class 3Phase 208v Master Outline
30 kVA	460405	460407	460409	460411	460413	460415	460417	460419	460421	460423	460425	EpoxtCast 30kVA 5_15kV Class 3Phase 208v Master Outline
45 kVA	460505	460507	460509	460511	460513	460515	460517	460519	460521	460523	460525	EpoxtCast 45kVA 5_15kV Class 3Phase 208v Master Outline
75 kVA	460705	460707	460709	460711	460713	460715	460717	460719	460721	460723	460725	EpoxtCast 75kVA 5_15kV Class 3Phase 208v Master Outline
112.5 kVA	460905	460907	460909	460911	460913	460915	460917	460919	460921	460923	460925	Consult Sales for Outline
150 kVA	461005	461007	461009	461011	461013	461015	461017	461019	461021	461023	461025	Consult Sales for Outline
225 kVA	461105	461107	461109	461111	461113	461115	461117	461119	461121	461123	461125	Consult Sales for Outline
500 kVA	461305	461307	461309	461311	461313	461315	461317	461319	461321	461323	461325	Consult Sales for Outline