Pole-mounted Transformers

Rurales-Portada

Prestige and reliability

Leaders in the argentinian market and supported by our wide experience of over 50 years, our pole-mounted transformers hold today the best performance in service. Our pole-mounted transformer line is designed for single-post installation or over air platforms in single phase or three- phase lines of urban, suburban and rural energy distribution, with up to 35 KV.
Its manufacturing conforms to the latest IEC Standards. On request these transformers may be built in order to respond to ANSI C 57 standards or to any other international specification. They are built with vacuum air chamber (without conservator or air dehydrator).

General building

WINDINGS
They are layer laminated type and built in pure electrolyte copper. They have been carefully designed to endure the efforts of external short-circuits, over-voltage impulse and operation, as well as to clear up the heat generated. The Impulse, External Short-circuit and Heating tests, carried out in prestigious Official Laboratories such as the High Tension Laboratory in San Juan National University, the High Tension Laboratory in La Plata National University and the Power Laboratory in Rio Cuarto National University, all guarantee our designs.

MAGNETIC CORE
The core is built with low-loss grain-oriented silicon steel sheets with a thickness within 0,23 and 0,35mm. Conformed and cut type, of easy assembly and disassembly without special tools, it is specifically designed to reduce eddy current to minimum values.

TANK
It is built in cold laminated and double stripped steel sheets. Its cylinder shape reduces the force caused by wind to a minimum, especially in single-post installations. It also allows absolute vacuum inside it. The convex designed cover avoids water accumulation and increases its mechanical endurance.
The interior finish is made with a white epoxy base, which does not pollute the coolant oil and is neither affected by it. The STANDARD exterior finish has antirust zinc chromate paint in the base and a final coat with synthetic orange enamel, fit for outdoors. On request and for severe environmental conditions, other paint schemes can be provided.

TAP-CHANGERS
All transformers are provided with an off-load tap-changer externally activated, conforming to IEC, ANSI, IRAM or any other required Standard. Different ranges can be provided on request.

TESTS
Our laboratories, equipped with state-of-the-art technology, allow the execution of all Routine and Reception tests required by the Standards.

Technical Features

IRAM 2279:

Single-phase Pole-mounted Transformer
Voltage ratio 7,62  ± 5 % /0,231 kV/kV
Power
(KVA)
Losses (W) Ucc (%) Sizes (mm) Weight
(Kg)
Po Pcc Length Width Height Diameter
1,5* 20 60 4,50 400 350 620 240 45
5 30 160 4,50 500 500 800 295 70
10 45 290 4,50 600 600 950 340 110
16 60 390 4,50 600 600 1000 380 140
25 85 600 4,50 700 700 1150 415 210

* Without tap-changer

IRAM 2279

Single-phase Pole-mounted Transforme
 
Voltage ratio 19,05  ± 5 % /0,231 kV/kV
Power
(KVA)
Losses (W) Ucc (%) Sizes (mm) Weight
(Kg)
Po Pcc Length Width Height Diameter
10 60 270 4,5 600 600 1450 380 150
16 70 440 4,5 600 600 1450 380 180
25 110 600 4,5 600 600 1450 415 250

IRAM 2279

Single-phase Pole-mounted Transforme
 
Voltage ratio 13,2  ± 5 % /0,231 kV/kV
Power
(KVA)
Losses (W) Ucc (%) Sizes (mm) Weight
(Kg)
Po Pcc Length Width Height Diameter
5 30 160 4,50 500 500 800 295 75
10 45 290 4,50 600 600 950 340 115
16 60 390 4,50 600 600 1000 380 145
25 85 600 4,50 700 700 1150 415 215
40 110 865 4,50 700 700 1120 415 250
75** 220 1150 4,00 850 800 1180 540 435
100** 270 1560 4,00 880 850 1180 540 490

** With tap-changer ±2 x 2,5 %

IRAM 2279

Single-phase Pole-mounted Transforme
 
Voltage ratio 33,0  ± 5 % /0,231 kV/kV
Power
(KVA)
Losses (W) Ucc (%) Sizes (mm) Weight
(Kg)
Po Pcc Length Width Height Diameter
10 60 320 4,5 600 600 1400 380 185
16 75 430 4,5 600 600 1450 415 235
25 110 600 4,5 600 600 1450 415 260

IRAM 2247

Three-phase Pole-mounted Transformer
 
Voltage ratio 13,2  ± 5 % /0,4-0,231 kV/kV
Power
(KVA)
Losses (W) Ucc (%) Sizes (mm) Weight
(Kg)
Po Pcc Length Width Height Diameter
10 80 340 4,5 550 550 1350 340 160
16 100 550 4,5 550 550 1350 340 195
25 140 650 4,5 650 700 1350 415 270
31,5 170 900 4,5 650 700 1350 415 320
40 180 1050 4,5 650 700 1400 415 345
50 210 1250 4,5 650 700 1750 415 460
63 230 1450 4,5 650 700 1750 415 540

Drawings

rurales-planos