Standard Features
- Progressively wound coils with adhesive resins on thermally upgraded insulating paper provide increased short-circuit and thermal strength.
- Sheet conductor in LV windings enables the electrical centers in the high and low to align themselves, minimizing the vertical component of short-circuit forces.
- Reinforced core-coil assembly provides greater short-circuit withstand capability.
- Prototype testing ensures the JUMBO design can meet industry short-circuit standards and provide reliable service.
- Self-venting and resealing cover eliminates the need for an auxiliary pressure-relief device and offers increased safety through higher tank withstand.
- ANSI support lugs (hanger brackets) are rod-welded to the tank wall for added strength.
- Anodized, aluminum-laser inscribed nameplate offers longer-term readability.
- Lifting lugs are positioned directly opposite the cover beam support lugs, reducing the chance of the tank going out of round when lifted.
- Cover-mounted, high-voltage, porcelain bushings with eyebolt terminals are mounted on flat embossments on the cover and have undercut gasket seats for improved sealing. The eyebolt connectors are cast bronze-plated with tin.
- Low-voltage porcelain bushings with clamp-type terminals provide ease in making secondary terminations.
- Arrester mounting pads are resistance-welded to the tank wall, completely and uniformly filling the surfaces where pad and tank wall join to provide greater strength.
- Durable, corrosion-resistant paint finish.
- 50 – 500 kVA
- 65C rise
- 60 Hz standard, 50 Hz optional
- High voltages: 7200, 14,400 and 19,920
- Low voltages: 2400, 4800, 7200, 7620, and 7970
Standard Design Dimensions and Weights
All dimensions and weights are approximate.
All approximate dimensions shown reference designs with 2.5% taps.
| kVA | A Inches (mm) |
B Inches (mm) |
C Inches (mm) |
D Inches (mm) |
Weight Lbs. (kg) |
Shipping Weights Lbs. (kg) |
Oil Gallons (L) |
||
|---|---|---|---|---|---|---|---|---|---|
| 7,200 HV | 14,400 HV | 2,400 LV | 7,200 LV | ||||||
| 50 | 45 (1143) |
47 (1194) |
24 (610) |
28 (711) |
25 (635) |
20 (508) |
750 (341) |
785 (357) |
36 (137) |
| 75 | Not Available | ||||||||
| 100 | 45 (1143) |
52 (1321) |
31 (787) |
31 (787) |
31 (787) |
22 (559) |
1095 (497) |
1150 (523) |
50 (190) |
| 167 | 58 (1473) |
52 (1321) |
33 (838) |
37 (940) |
33 (838) |
27 (686) |
2010 (914) |
2090 (950) |
88 (334) |
| 250 | 54 (1372) |
56 (1422) |
41 (1041) |
37 (940) |
33 (838) |
27 (686) |
2340 (1064) |
2440 (1109) |
85 (323) |
| 333 | 54 (1372) |
64 (1625) |
45 (1143) |
37 (940) |
33 (838) |
27 (686) |
2400 (1091) |
2500 (1136) |
88 (334) |
| 500 | 69 (1753) |
68 (1727) |
45 (1143) |
39 (991) |
36 (914) |
27 (686) |
3065 (1393) |
3165 (1439) |
120 (456) |