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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 substation 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 C57.12.36 |
| CSA |
C88 |
| NEMA (sound level) |
NEMA TR-1 |
| Third-party approval/recognition |
FM Global (Indoor and Outdoor), UL/cUL – available for most ratings |
| Layout |
Unit or open substation 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 and outdoor |
| Insulating medium |
Air |
| Hinge material |
Stainless steel cabinet hinges and mounting studs |
| Distribution transformer |
3-phase substation |
| 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 spade |
|
| Tank features |
Tank bases designed for skidding or rolling in any direction |
| Extra-heavy, welded-in-place lifting lugs and jack pads (4) |
|
| Cooling |
Cooling radiators are welded directly to the tank |
| Removable radiators (optional) |
|
| Standard gauges |
Dial-type thermometer |
| Dial-type liquid level gauge |
|
| Pressure vacuum gauge |
|
| Cover mounted automatic pressure relief device |
|
| Pressure test connection |
|
| Drain/fill valves |
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 |
| Grounding |
Stainless steel NEMA 2-hole ground pads (750-7500 kVA) |
| Nameplate |
Laser-scribed anodized aluminum nameplate (SS nameplate optional) |
