Electric Vehicle (EV) Charging Transformers
Coming Soon

As electric vehicle (EV) infrastructure expands, transformers play a critical role in powering EV charging stations with reliable, efficient energy. HPS EV charging transformers deliver seamless power, durability, and high energy efficiency for level 1-3 charging applications.

With advanced dry-type transformer technology and tested enclosures designed to withstand harsh outdoor environments such as blowing snow and rain, HPS EV charging transformers deliver reliable performance to support the demands of electric vehicle infrastructure.
Resolve Common EV Charging Demands
Harmonic Load Management
Certain EV chargers can introduce high harmonic currents, leading to potential overheating in transformers. HPS offers K-factor and harmonic mitigating transformers to help manage these harmonic loads.
Environmental Durability
Standard HPS EV charging transformer enclosures are rated for both indoor and outdoor use. For extreme weather conditions such as blowing snow, rain, and sleet, HPS offers outdoor solutions designed for enhanced durability and protection. In warmer climates, low-temperature rise options help prevent overheating, ensuring steady performance.
Visual Integration
HPS offers a range of enclosure color options to match the look of modern EV charging stations.
The Most Rugged Outdoor Enclosure that meets Energy Efficiency Standards
Our 3RE+ is designed, tested, and built for real-world, harsh weather conditions.

- Built to Brave the Elements: Withstand the toughest elements—rain, wind, sleet, and snow—with a rugged enclosure that can handle wind speeds up to 120 km/h and snow particles as tiny as 350 microns.*
- Sealed Against Dust: Protect internal components from airborne dust and debris, ensuring long-term transformer performance even in dry, high-traffic areas.
- Secure by Design: A protective enclosure with filters and louvers blocks access to live components to enhance protection in publicly accessible areas.
*While our enclosure is designed to withstand severe weather conditions, we recommend consulting with our experts to ensure proper protection for your specific needs.
- Meet or exceed U.S. Department of Energy (DOE 2016) 10 CFR Part 431 efficiency standards and comply with the latest Canadian Energy Efficiency Regulations (SOR/2018-201) as of NRCan 2019.
- Single phase from 15 kVA to 333 kVA, three phase from 15 kVA to 1000 kVA
- 150°C temperature rise
- 220°C insulation class
- Options for low temperature rise to accommodate varying environmental conditions
- Standard aluminum windings, with optional copper windings available for enhanced performance
- UL and CSA listed
- Standard Type 3R enclosures, optional 3RE plus enclosures for enhanced protection
- Suitable for all Level 1-3 charging applications
- Custom sizes, ratings and styles available upon request
Optional Features
- RAL 9060 (White) with Zinc primer to match the look of your installation
- Thermal sensor for real-time temperature management
- Low sound level options to reduce noise in sensitive environments
-
HPS EV Charging Transformers Part Numbering Structure
Family Type Generation Phase kVA Pri. Volt. Sec. Volt. K Rating Winding Material/ Electrostatic Shield/ Thermostat Temp. Rise & Insul. Class Enclosure Sound Level Special Duty Enclosure Color S G 3 A 0 0 4 5 K B 0 K F C 0 E W Family
S - Sentinel
Type
G - General
K - K RatedGeneration
2 - Gen. 2, DOE 2016
3 - Gen. 3, DOE 2016Phase (Pri-Sec)1
A - 3PH Delta-Wye-N
B - 3PH Wye-N-Delta
C - 3PH Delta-Delta/CT2
D - 3PH Delta-Delta
Y - 3PH Wye-N Wye-N
K - 1PH Single-SinglekVA
kVA Rating
Primary Voltage3
1PH:
B - 208
D - 240
K - 480
N - 575
P - 6003PH:
208D, 208Y/120
240D
480D, 480Y/277
575D
600D, 600Y/347, 220D, 220Y/127Secondary Voltage
1PH:
B - 208
E - 240
L - 240 x 480
M - 240 x 480
P - 600
Y - 3473PH:
208D, 208Y/120
240D, 240D/120CT
480D, 480Y/277
600D, 600Y/347
380Y/220V, 400Y/231V,
416Y/240V, 430Y/248VK Rating
0 = None (K1)*
4 = K4
9 = K9
3 = K13
2 = K20 (max. 300 kVA)Winding Material/Electrostatic Shield/Thermostat
A - Aluminum*
S - AL + Shield
C - Copper
K - CU + Shield
L - CU + Thermostat
M - CU + Shield + Thermostat
J - CU + Double ShieldTemperature Rise at Standard 200°C Insulation Class
B - 80°C
F - 115°C
G - 130°C
H - 150°C*Enclosure
C - Type 3R*
D - Type 3RE
E - Type 3RX
X - None (Core & Coil)Sound Level
0 = Standard*
3 = -3 dB
5 = -5 dB
8 = -8 dB5Special Duty
E - EV Charging
Enclosure Color6
None -
W - White RAL 90301Standard configurations winding vector per UL 1560
2Available standard only with 240D/120CT secondaries
3Units with primary volatge codes 'G' and 'X' come standard as 50/60 Hz rated. All others are 60 Hz only.
4NEMA 4, 12 and 4X available
58dB is available only for 75kVA and above
6Character only applies to EV duty transformer
*Comes as default
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