TRANSFORMERS
Maddox padmount transformers are constructed of the highest quality materials
and built in the US to heavy duty industrial standards. Our padmounts are built
and tested in accordance with industry standards (NEMA, ANSI, DOE, and IEEE
as applicable). Maddox padmounts are ideal for commercial and industrial
applications such as data centers, solar step-up, utility projects, manufacturing
facilities, shopping centers, etc.
Maddox has the manufacturing ability to produce almost any custom design, we
also stock all standard configurations. With thousands of new and reconditioned
units in stock and ready-to-ship, Maddox is ready to meet your transformer needs.
DESIGN
HV Bushing Config:
1. Dead front or live front
2. Loop feed or radial feed
Fluid Options:
1. Type II Mineral Oil
2. Envirotemp™ FR3™
Standard Gauge/Accessory Package:
1. Pressure relief valve
2. Pressure vacuum gauge
3. Liquid temp & level gauges
4. Drain & sample valve
5. Adjustment taps
Switch Options:
1. 2 Position LBOR Switch
2. 4 Position LBOR Switch (V-blade or T-blade)
3. (3) 2 Position LBOR Switches
Fusing Options:
Bayonets w/ isolation links or CLFs
Construction:
1. 5-legged core
2. Rectangular wound copper or aluminum windings
3. Carbon reinforced or stainless steel tank
4. Steel divider between HV and LV cabinets
5. Penta-head captive bolt
Optional Design Features & Accessories:
1. Gauges w/ Contacts
2. External drain and sample valve
3. Electrostatic Shielding
4. K-Factor Design
5. Step-up Design
6. Surge-Arresters
AVAILABLE RATINGS
Sizes (kVA) 45, 75, 112.5, 150, 225, 300, 500, 750, 1000, 1250, 1500,
1750, 2000, 2250, 2500, 2750 3000, 3750, 5000
Frequency 60 Hz or 50 Hz
Cooling Class ONAN or KNAN
Temp Rise 55°C, 65°C, 55/65°C
Voltages Available in � or Y configuration
600V
208
240
416
480
600
2.5kv – 5kv
2400
4160
4800
15kV
12000
12470
13200
13800
14400
25kV
20780
21600
22900
24940
26400
35kV 33000
34500
PADMOUNT TRANSFORMER OUTLINE
APPROXIMATE TRANSFORMER DIMENSIONS
kVA A B C D E F G Gallons Weight (Lbs)
300 59” 29.5” 22” 51.5” 20.5” 24” 10” 196 4,056
500 59” 33” 26.5” 59.5” 24” 26.5” 10” 210 5,023
750 73” 36” 29” 65” 24” 26.5” 10” 358 7,664
1000 73” 36” 29” 65” 24” 27” 10” 354 8,530
1500 73” 36” 35.5” 71.5 24” 33.5” 10” 410 10,782
2000 75” 39.5” 28” 67.5 24” 35” 27” 433 12,490
2500 78” 39.5” 35.5” 75.5” 24” 37.5” 22.5” 545 14,246
3000 84” 30.5” 32” 62.5” 24” 37.5” 38” 550 14,014
3750 75” 50.5” 30” 80.5” 25.5” 42” 38” 730 17,785
THREE PHASE MADDOX
PADMOUNT TRANSFORMER
COMMON ACCESSORIES
1. Bayonet Fuses 2. Loadbreak Switch 3.Tap-changer
4. Bushings 5. Parking Stand 6. Gauges