🏢 Substation Enclosures (NEMA 1 / NEMA 3R Louvered Enclosures, Ventilation CFM)

Transformer NEMA 3R Enclosure Calculator

Size outdoor weatherproof NEMA 3R and indoor NEMA 1 protective enclosures for medium-voltage dry transformers: calculate required heat dissipation airflow (CFM based on total no-load + full-load coil losses in Watts and maximum allowable internal air temperature rise Delta-T 15 deg F), size louver free area, and electrical enclosure profits.

1. Project & Operating Inputs

Total Transformer Heat Loss (kW e.g. 28.0 kW Total Core + Coil Losses)

Allowable Enclosure Temp Rise (Delta-T deg F e.g. 15.0 deg F Enclosure Rise)

Customer Bid Price for Supplied & Landed Heavy NEMA 3R Enclosure ($)

12-Gauge Galvannealed Steel Enclosure, Filtered Louvers, Exhaust Fans ($)

2. Financial Breakdown & Yield

NEMA 3R SUBSTATION ENCLOSURES

Turnkey NEMA 3R Enclosure Package Profit

Substation Enclosure Manufacturing Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost