Customization: | Available |
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Application: | Power, Electronic |
Phase: | Three |
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Rated capacity kVA | Voltage combination | NO-load loss W | Load loss W | No-load current % |
Short-circuit Impedance |
|||
HV (KV ) | HV tapping range | LV (KV) | Connection symbol | |||||
30 | 6.3kV 10.5kV 11kV 13.2kV 13.8kV 15kV |
±2 × 2.5%; Or ±5% |
0.4 | Dyn11 or Yyn0 | 90 | 660 | 2.1 | 5.5 |
50 | 130 | 960 | 2.0 | |||||
63 | 150 | 1145 | 1.9 | |||||
80 | 180 | 1370 | 1.8 | |||||
100 | 200 | 1650 | 1.6 | |||||
125 | 240 | 1980 | 1.5 | |||||
160 | 290 | 2420 | 1.4 | |||||
200 | 330 | 2860 | 1.3 | |||||
250 | 400 | 3350 | 1.2 | |||||
315 | 480 | 4010 | 1.1 | |||||
400 | 570 | 4730 | 1.0 | |||||
500 | 680 | 5660 | 1.0 | |||||
630 | 810 | 6820 | 0.9 | 6 | ||||
800 | 980 | 8250 | 0.8 | |||||
1000 | 1150 | 11330 | 0.7 | |||||
1250 | 1350 | 13200 | 0.7 | |||||
1600 | 1630 | 15950 | 0.6 | |||||
2000 | 1950 | 19140 | 0.6 | |||||
2500 | 2340 | 22200 | 0.6 |
Types of Distribution Transformer
Oil-immersed Type
Generally, this transformer is available in different sizes with efficiencies along with insulating oil. The selection of this transformer mainly lies in the requirement and budget of the user. There are four types of distribution transformer connections available like star-star, delta-delta, star-delta, delta-star and Zig Zag/delta zigzag.
Mainly Components:
The mainly parts of this transformer include Oil Tank, Conservator, Buchholz Relay, Breather Unit, Oil Indicator, Temperature Detector, Pressure Relief Device, Thermal Relay, Radiator, and Bushing.
1. The oil tank is used to soak the windings by placing it in.
Pad Mounted Type
Pad mounted transformer is a ground mounted electric power distribution transformer in a locked steel cabinet mounted on a concrete pad. Since all energized connection points are securely enclosed in a grounded metal housing, a pad mounted transformer can be installed in places that do not have room for a fenced enclosure.
The Pad-mount transformer is oil filled unit. The core and coils are enclosed in a steel oil-filled tank, with terminals for the transformer accessible in an adjacent lockable wiring cabinet. The wiring cabinet has high and low voltage wiring compartments. High and low voltage underground cables from below enter the terminal compartments directly. The top of the tank has a cover secured with carriage bolt-nut assemblies. The wiring cabinet has sidewalls on two ends with doors that open sideways to expose the high and low voltage wiring compartments.
Dry Type
Dry-type transformers, also known as cast resin transformers, the windings and core are kept within a sealed tank that is pressurized with air. These transformers simplify installation since they are dry, without cooling oil, and so require no fire-proof vault for indoor installations. The epoxy protects the windings from dust and corrosive atmospheres.
Pole Mounted Type
Pole mounted transformers are electric utility distribution transformers that are mounted on an electrical service pole and are usually at the level of the overhead cables. These are used for changing high distribution voltage to low like 120/240-volt power. These types of transformers are used in a wide rural area, ranges from 16 kVA to 100kVA. These are available in small size and easy to fit on single-pole structures. These transformers are reliable to harsh climates when they used in remote areas.