Completely filled Transformers (without nitrogen chamber)

llenado-integral-portada

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 13.200 ± 2 x 2,5% /400 V/V
Power
(KVA)
Losses (W)Zcc
(%)
Sizes (mm)  Mass
(Kg)
PoPccDepthWidth  Height Trail
25*160600410007501100600390
40*200900411007501100600470
63*2701350411507501100600530
80*3151500412007501100600600
100*3501750412007501150600640
125*4202100414507501150600680
160*5002500415007501250600820
2006003000415508501250600880
25070035004165090012507001020
31585042504165090013007001200
400100050004165095015007001470
5001200600041650105016507001740
6301450725041650105016508001940
8001750875051800105016758002360
100020001050051950110017008003060
1250220013000519501200180010003480

* Designed to be used pole-mounted, too.

Completely Filled
Ratio 33.000 ± 2 x 2,5% /400 V/V
Power
(KVA)
Losses (W)Zcc
(%)
Sizes (mm)  Mass
(Kg)
PoPccDepthWidth  Height Trail
25*190650412008001500600600
40*290900413008001500600700
63*3201500413008001500600800
80*3301600412008501550600850
100*42019004120090016006001000
125*50025004160080016006001000
160*60028004160080016006001100
20070032504140090016006001200
250850400041500100017007001500
315950480041800110017007001600
4001200500041800110020007002000
5001250640041800110020007002300
6301500760041900120020008002700
8001800980052000120020008003200
100022001170052100120021008003700
1250250014200522001300210010004300

* Designed to be used pole-mounted, too.

Drawings

llenado-integral-plano