Completely filled Transformers (without nitrogen chamber)

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Prestige and reliability

To satisfy the increasing market demand Tadeo Czerweny S.A. has been developing, based on the already traditional model of corrugated tank, the completely filled transformers. Fully accepted in Europe, this sort of products has applications up to 38 kV.

GENERAL FEATURES

  • Compact design.
  • Minimum maintenance.
  • Descargadores de Oxido de cinc.
  • Interchangeability with transformers with oil compensating tank and Nitrogen chamber types.
  • Practical and less expensive design.
  • Absence of Nitrogen/Gas chamber.
  • Absence of Oil Compensator Tank.

TECHNICAL FEATURES
The completely filled transformers conform to IEC Standards regarding power, voltage, insulation level, overload pattern and all other specifications. To facilitate their interchange with other types of machines they may maintain the trail and wheels according to provided Standards. As they are sealed transformers (without oil compensating tank), the whole structure works at a variable pressure according to oil temperature, without air exchange with the exterior. This prevents oil from getting in contact with the environment, thus stopping humidity entrance, preserving rust inhibitors and extending transformer life. The main difference with the traditional sealed transformer is the absence of nitrogen chamber, since oil volume fluctuation with temperature is compensated by expansion and contraction of the corrugated tank walls. The tank is designed in such a way that when the oil reaches its highest rated temperature, the inner pressure never exceeds 4.9 N/cm2. Following special designs, it is possible to reach provisions up to 2500 kVA.

ACCESSORIES

Accessories are provided according to client request, however our IEC product lines already include:

  • 3 porcelain high voltage insulators.
  • 4 porcelain low voltage insulators.
  • 1 off-load “5 steps” tap changerd.
  • 1 oil sample taking valve.
  • 1 oil filling valve.
  • 1 oil drainage valve.
  • 1 nameplate.
  • Lifting, transportation and disassembly eyebolts.
  • 1 thermometer case.
  • 2 grounding terminals.
  • 4 bi-directional wheels.
  • High voltage 2-step arresters.

Recommended accesory:

For transformers above 400 kVA we strongly recommend the use of a General Purpose consolidated detector, that provides: Top Oil Temperature, Oil level indication, Internal Pressure and Internal Gas Accumulation. This last indication is equivalent to the Buchholz Relay for transformers with oil compensating tank. Except for the temperature measurement that provides two electric signal, ALARM and SHUT DOWN, all the others give electric ALARM indications only.

Completely Filled
Ratio 13,2  ± 2 x 2,5 % /0,4 kV/kV 
Power
(KVA)		 Losses (W) Zcc
(%)		 Sizes (mm)   Mass
(Kg)
Po Pcc Depth Width   Height Trail
25* 160 600 4 1000 750 1100 600 390
40* 200 900 4 1100 750 1100 600 470
63* 270 1350 4 1150 750 1100 600 530
80* 315 1500 4 1200 750 1100 600 600
100* 350 1750 4 1200 750 1150 600 640
125* 420 2100 4 1450 750 1150 600 680
160* 500 2500 4 1500 750 1250 600 820
200 600 3000 4 1550 850 1250 600 880
250 700 3500 4 1650 900 1250 700 1020
315 850 4250 4 1650 900 1300 700 1200
400 1000 5000 4 1650 950 1500 700 1470
500 1200 6000 4 1650 1050 1650 700 1740
630 1450 7250 4 1650 1050 1650 800 1940
800 1750 8750 5 1800 1050 1675 800 2360
1000 2000 10500 5 1950 1100 1700 800 3060
1250 2200 13000 5 1950 1200 1800 1000 3480

* Designed to be used pole-mounted, too.

Completely Filled
Ratio 33,0  ± 2 x 2,5 % /0,4 kV/kV 
Power
(KVA)		 Losses (W) Zcc
(%)		 Sizes (mm)   Mass
(Kg)
Po Pcc Depth Width   Height Trail
25* 190 650 4 1200 800 1500 600 600
40* 290 900 4 1300 800 1500 600 700
63* 320 1500 4 1300 800 1500 600 800
80* 330 1600 4 1200 850 1550 600 850
100* 420 1900 4 1200 900 1600 600 1000
125* 500 2500 4 1600 800 1600 600 1000
160* 600 2800 4 1600 800 1600 600 1100
200 700 3250 4 1400 900 1600 600 1200
250 850 4000 4 1500 1000 1700 700 1500
315 950 4800 4 1800 1100 1700 700 1600
400 1200 5000 4 1800 1100 2000 700 2000
500 1250 6400 4 1800 1100 2000 700 2300
630 1500 7600 4 1900 1200 2000 800 2700
800 1800 9800 5 2000 1200 2000 800 3200
1000 2200 11700 5 2100 1200 2100 800 3700
1250 2500 14200 5 2200 1300 2100 1000 4300

* Designed to be used pole-mounted, too.

Drawings

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