Any experience with CSL-3 dry-type transformers?

[shamsdebout]

I am wondering if anyone has being specifying or installing any CSL-3 dry-type transformers.

 

[templdl]

I am wondering if anyone has being specifying or installing any CSL-3 dry-type transformers.

It seems like such a simple question.
Remember TP1?, the CSL series is the next level in energy efficient transformers.
This I took from a C-H white paper:
"2.2. NEMA TP1-1996/2002 Standard In 1996, NEMA responded to the industry need for higher transformer efficiencies with the publishing of the NEMA TP1 standard. NEMA updated the standard in 2002 and received approval for inclusion of the TP1 requirements into the DOE Energy Star program.
2.3. ANOPR The DOE rulemaking effort progressed to the ANOPR step and the notice was published July 29, 2004 titled, ?10 CFR Part 430 ?Energy Conservation Program for Commercial and Industrial Equipment: Energy Conservation Standards for Distribution Transformers (Proposed Rule)??. 69 Fed.Reg. 45376. This proposed rule contained the beginnings of higher minimum efficiencies for all types of transformers within today?s electrical power systems. The ANOPR documented the candidate standard levels (CSLs) and the three representative low voltage transformer sizes or design lines which would be used for evaluation.
Candidate Standard Level (CSL) is a term used in the DOE efficiency evaluation process for transformers. The number following the term CSL is based on the range of transformer efficiency levels considered. The levels were determined based on the difference between the highest possible calculated design without consideration of material availability or cost and current high efficiency models in production. In the DOE efficiency evaluation, there were five levels equally spaced with CSL1 being equal to NEMA TP1 and CSL5 equal to the highest calculated value. As part of the simplification process for analysis, the DOE chose representative transformer sizes for design lines for evaluation to the CSL levels. For LV dry transformers, 25 kVA, 75 kVA, and 300 kVA models where chosen as designs to evaluate in respect to the CSL efficiency levels. "
As such this is just another slant for TP1.
I hope this helps.

 

[shamsdebout]

It seems like such a simple question.
Remember TP1?, the CSL series is the next level in energy efficient transformers.
This I took from a C-H white paper:
"2.2. NEMA TP1-1996/2002 Standard In 1996, NEMA responded to the industry need for higher transformer efficiencies with the publishing of the NEMA TP1 standard. NEMA updated the standard in 2002 and received approval for inclusion of the TP1 requirements into the DOE Energy Star program.
2.3. ANOPR The DOE rulemaking effort progressed to the ANOPR step and the notice was published July 29, 2004 titled, ?10 CFR Part 430 ?Energy Conservation Program for Commercial and Industrial Equipment: Energy Conservation Standards for Distribution Transformers (Proposed Rule)??. 69 Fed.Reg. 45376. This proposed rule contained the beginnings of higher minimum efficiencies for all types of transformers within today?s electrical power systems. The ANOPR documented the candidate standard levels (CSLs) and the three representative low voltage transformer sizes or design lines which would be used for evaluation.
Candidate Standard Level (CSL) is a term used in the DOE efficiency evaluation process for transformers. The number following the term CSL is based on the range of transformer efficiency levels considered. The levels were determined based on the difference between the highest possible calculated design without consideration of material availability or cost and current high efficiency models in production. In the DOE efficiency evaluation, there were five levels equally spaced with CSL1 being equal to NEMA TP1 and CSL5 equal to the highest calculated value. As part of the simplification process for analysis, the DOE chose representative transformer sizes for design lines for evaluation to the CSL levels. For LV dry transformers, 25 kVA, 75 kVA, and 300 kVA models where chosen as designs to evaluate in respect to the CSL efficiency levels. "
As such this is just another slant for TP1.
I hope this helps.

Thanks for the link. However it was after reading a similar link that prompted me to ask the question. It dawned on me that at my firm we were not specifying said transformer and I didn't know of any in the industry who were. So I wanted to see if others were.

Oh yes, I am familiar with TP-1.

I appreciate you responding and thanks for the excerpt you copied since it had some additional information.