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With enhanced surge protection and a hardened design, Eaton’s Cooper Power series Envirotran Critical Load Transformer (CLT) offers an unparalleled combination of reliability, efficiency, safety, performance and value. Providing superior operation in stressful electrical environments, these pad-mount transformers are filled with FR3 dielectric fluid for enhanced fire protection and longer lifespan.
Cargill's FR3 dielectric fluid provides superior transformer performance, safety and environmental friendliness.
| Base kVA |
45 kVA to 12,000 kVA |
| Primary voltage |
2400 V to 46,000 V |
| Secondary voltage |
120 V to 24,940 V |
| Basic Impulse Level (BIL) |
30kV to 250kV |
| 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 – available for most ratings |
| Layout |
Compartmental type |
| Tamper resistance |
Three-point latching and padlock system with recessed penta-head bolt |
| Enclosure integrity |
Meets or exceeds ANSI/IEEE C.57.12.28 and C57.12.29 |
| Material |
Mild or stainless steel (304L) |
| Enclosure environment |
Indoor ad outdoor |
| Insulating medium |
Air |
| Hinge material |
Stainless steel cabinet hinges and mounting studs |
| Distribution transformer | Three-phase padmounted |
| Install location | Indoor and outdoor |
| Power direction | Step-down and Step-up |
| Fluid | FR3 fluid or electrical grade mineral insulating oil (upon special request) |
| Tap changer | De-energized tap changer, externally operable |
| Terminations | Sidewall-mounted high-voltage porcelain bushings |
| Sidewall-mounted low-voltage molded epoxy bushings with NEMA spades | |
| Tank features | Tank bases designed for skidding or rolling in any direction |
| Extra-heavy, welded-in-place lifting lugs and jack pads (4) | |
| Grounding | Stainless steel grounding pads (4) |
| Cooling | Cooling radiators are welded directly to the tank |
| Removable radiators (optional) |
|
| Standrd gauges | Dial-type thermometer |
| Dial-type liquid level gauge | |
| Pressure vacuum gauge | |
| Cover mounted automatic pressure relief device | |
| Pressure test connection | |
| Drain/fill valve | 1” upper fill plug with filter press connection |
| 1” drain valve with sampler combination (2500 kVA and below) | |
| 2” drain valve with sampler (over 2500 kVA) | |
| 1” upper filter valve (over 2500 kVA) |
|
| Paint color | Painted using ANSI #61 Light Gray; ANSI #70 Sky Gray; or special paint available per request |
| Nameplate | Laser-scribed anodized aluminum nameplate |
| Stainless steel nameplate (optional) |
Product advisory
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.
