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Eaton’s Cooper Power series Envirotran solar and energy storage transformers are designed for solar photovoltaic and energy storage medium-voltage applications. Friendlier to the environment, these pad-mounted transformers are filled with biodegradable and sustainable FR3 dielectric fluid, which also provides enhanced fire protection and a longer lifespan. Available in 45 through 12,000 kVA ratings, these solar and energy storage transformers may also be customized with a variety of site-specific characteristics to optimize safety and system integration.
Cargill's FR3 dielectric fluid provides superior transformer performance, safety and environmental friendliness.
This video demonstrates how quick and easy it is to install Eaton's close-coupled low-voltage throat connection between a typical 2500 kVA pad-mounted transformer and low-voltage AC recombiner switchboard.
| Base kVA |
45 kVA to 12,000 kVA |
| kVA increase at 65/75 AWR |
+12% (max rating up to 13,440 kVA) |
| kVA increase at 55/75 AWR |
+22% (max rating up to 14,640 kVA) |
| Medium (high) voltage |
2400 V to 46,000 V |
| Low voltage |
120 V to 14,400 V |
| Basic Impulse Level (BIL) |
30kV to 250kV |
| Additional forced-air ratings |
+15%, +25%, +33% to base kVA |
| ANSI/IEEE |
C57.12.00 and C57.12.34 |
| CSA |
C227.4 |
| NEMA (sound level) |
NEMA TR-1 |
| Third-party approval/recognition |
FM Global (Indoor & Outdoor), UL/cUL Listed/classified |
| Layout |
Compartmental type |
| Tamper resistance |
Three-point latching and padlock system with recessed and penta-head bolts |
| Enclosure integrity |
Meets or exceeds ANSI/IEEE C57.12.28 and C57.12.29 (if stainless construction) |
| Material |
Mild or stainless steel (304L) |
| Enclosure environment |
Indoor and outdoor |
| Insulating medium |
Air |
| Close-coupling |
Low-voltage throats available |
| Special tank |
Designed and braced to withstand daily pressure and vacuum cycling |
| Mounting |
Can be designed for skid or on-site integration |
| Distribution transformer | Three-phase pad-mounted |
| Install location |
Indoor and outdoor |
| Power direction |
Bi-directional (step-up and step-down) |
| Electrostatic shield |
Filters electrical noise produced by power electronics |
| Multi-winding coils designs |
Three winding LHL and four winding designs to allow for multiple inverters connected to one transformer while meeting impedance requirements |
| Arc flash safety features |
External visible loadbreak switch, side-mounted gauges and drain valve, and side-mounted LV bushing options, Infrared (IR) windows |
Learn about the fundamentals of medium-voltage transformers
In the wake of a storm or disaster, Eaton understands that safety and speed of response is everything. You can rely on Eaton Care teams to plan, protect and connect.
