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 7.620 ±5%/231 V/V
Power
(KVA)
Losses (W)Ucc (%)Sizes (mm)Weight
(Kg)
PoPccLengthWidthHeightDiameter
1,5*20604,5040035062024045
5301604,5050050080029570
10452904,50600600950340110
16603904,506006001000380140
25856004,507007001150415210

* Without tap-changer

IRAM 2279

Single-phase Pole-mounted Transforme
 
Voltage ratio 19.050 ±5%/231 V/V
Power
(KVA)
Losses (W)Ucc (%)Sizes (mm)Weight
(Kg)
PoPccLengthWidthHeightDiameter
10602704,56006001450380150
16704404,56006001450380180
251106004,56006001450415250

IRAM 2279

Single-phase Pole-mounted Transforme
 
Voltage ratio 13.200 ±5%/231 V/V
Power
(KVA)
Losses (W)Ucc (%)Sizes (mm)Weight
(Kg)
PoPccLengthWidthHeightDiameter
5301604,5050050080029575
10452904,50600600950340115
16603904,506006001000380145
25856004,507007001150415215
401108654,507007001120415250
75**22011504,008508001180540435
100**27015604,008808501180540490

** With tap-changer ±2 x 2,5 %

IRAM 2279

Single-phase Pole-mounted Transforme
 
Voltage ratio 33.000 ±5%/231 V/V
Power
(KVA)
Losses (W)Ucc (%)Sizes (mm)Weight
(Kg)
PoPccLengthWidthHeightDiameter
10603204,56006001400380185
16754304,56006001450415235
251106004,56006001450415260

IRAM 2247

Three-phase Pole-mounted Transformer
 
Voltage ratio 13.200 ±5%/400-231 V/V
Power
(KVA)
Losses (W)Ucc (%)Sizes (mm)Weight
(Kg)
PoPccLengthWidthHeightDiameter
10803404,55505501350340160
161005504,55505501350340195
251406504,56507001350415270
31,51709004,56507001350415320
4018010504,56507001400415345
5021012504,56507001750415460
6323014504,56507001750415540

Drawings

rurales-planos