1 MVA TRANSFORMER, 1 PH, 60 HZ
Specifications:
- Isolation Transformer, 1 MVA, 1 PH, 60 Hz, P/N 10211L1
- Primary (1, 2): 480 VAC, 2083 A.
- Secondary (3, 4): 12,000 VAC, 83.3 A.
- Aluminum Winding
- NEMA 3R Enclosure Unit: 84” W x 96” H x 66” D
- Temperature Rise: 150 degrees C max
- Dimensions: 60” W x 78” H x 46” D
- Weight: 9000 lbs.
The photo of the enclosure is shown below:
The schematic diagram is shown below:
The design details are shown below:
Electrical Specifications Recommended Insulation System
Rating: 1 MVA, 1 PH, 60 Hz Nomex wrapped aluminum conductors
Primary: 480 VAC Nomex layer insulation
Secondary: 12000 VAC Nomex primary to secondary barriers
Turns Ratio: 25:1 Class H insulation system with VPI varnish or resin
Primary Current: 2083 A
Secondary Current: 83.3 A Estimated Performance
Windings: Aluminum Core Loss: Approximately 6000 W
Core Material: 29 M6 Silicon Steel Primary Aluminum Loss: Approximately 7500 W
Construction: Dry Type Secondary Aluminum Loss: Approximately 8000 W
Enclosure: NEMA 3R Total Aluminum Loss: Approximately 15500 W
Ambient Temperature: 40 C Total Transformer Loss: Approximately 21500 W
Temperature Rise Requirement: 150 C or better Full Load Efficiency: Approximately 97.8 percent
Standard: ANSI/IEEE C57.12.00 or equivalent
Core Design Thermal Performance at 40 C Ambient
Estimated Net Core Area: 150 to 160 square inches Average Winding Temperature Rise: Approximately 125 C to 145 C
Flux Density: 1.4 to 1.5 Tesla Hot Spot Temperature Rise: Approximately 145 C to 160 C
Volts per Turn: Approximately 36.9 V/turn Average Winding Temperature: Approximately 165 C to 185 C
Primary Turns: 13 Hot Spot Temperature: Approximately 185 C to 200 C
Secondary Turns: 325 Recommended Insulation Class: Class H 220 C
Winding Design Estimated Physical Size
Primary Winding: Open Core and Coil Assembly:
13 turns total 60 in W x 46 in D x 78 in H
Approximately 1 turn per layer NEMA 3R Enclosed Unit:
16 parallel aluminum conductors, each 0.250 in x 1.000 in 84 in W x 66 in D x 96 in H
Total aluminum area approximately 4.0 square inches Estimated Total Weight:
Secondary Winding: Approximately 9000 lb. enclosed
325 turns total
25 layers, 13 turns per layer
2 parallel aluminum conductors, each 0.125 in x 0.800 in
Total aluminum area approximately 0.20 square inches
To discuss your specific application, please call our number at (714) 624-4740, or send us an email at quote@lcmagnetics.com.
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L/C MAGNETICS INC.
MANFACTURER, RESELLER, AND DISTRIBUTOR OF CUSTOM TRANSFORMERS AND INDUCTORS
DRY TYPE TO OIL FILLED PRODUCTS FROM 0.1 KVA TO 50 MVA
CELEBRATING 35 YEARS IN BUSINESS
CARL E. HOLMES COMPANY -- CEHCO
MANUFACTURER OF CUSTOM DC RECTIFIERS, TRANSFORMER RECTIFIER ASSEMBLIES, AND POWER SUPPLIES
DIVISION OF L/C MAGNETICS
RECTIFIER SPECIALIST SINCE 1945