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Product Description

Oil Immersed

Outdoor Type Current Transformers (Oil Minimum)

Macroplast manufactures Oil Minimum type Outdoor Current Transformers up to 33 Kv system voltage.

This design has only one tank. The cores and windings are  arranged in the tank and the primary windings are taken through HT insulators to be connected to primary terminals. In this design, unlike Dead and Live Tank design, two HT insulators are provided for incoming and outgoing conductors. LT terminal box is also provided on the same tank.

Construction Features :

  • Primary Stud (20mmø)
  • Bushing Cap
  • Bushing (CJI/GE/Tayal/Re etc.)
  • Bushing Clamp
  • Main Tank (3.0mm)
  • Earthing Terminal
  • Lifting Lugs
  • Secondary Terminal Box
  • Cable Gland
  • Angle (50 x 50 mm)
  • Mounting Hole
  • Oil Level Gauge
  • Gasket
  • Core & Winding

Technical Specifications for Current Transformers

Type – LT, Resin Cast, Outdoor, Oil Minimum






Nominal system voltage (kv)

LT CT

11

33

66

132

Highest system voltage

0.66

12

36

72.5

145

Power frequency withstand voltage 1 min (kv)

3

28

70

140

275

Impulse withstand voltage (kvp)

NA

75

170

325

650

Rated Burden

2.5 VA to 30 VA

Rated Frequency (Hz)

50

50

50

50

50

Creepage Distance phase to earth (m.m)

NA

300

900

1815

3625

Rated primary current (Amp)

2.5 Amp to 2000 Amp

Rated Continous thermal current (Amp) (max)

NA

125% of rated primary current

Rated Secondary current (Amp)

1 Amp to 5 Amp/as per client requirements

Rated short time thermal current

NA

3 KA to 40 KA for one/three second

Rated dynamic current (KA-peak)

NA

2.5 times of short time current

Accuracy class (IS/IEC standard)

0.5, 1.0

0.2S; 0.2, 0.5S, 0.5, 1.0 for metering, 10P and PS for protection

Rated instrument security factor

Less than 5

Rated accuracy limit factor

10,20,30

Knee point voltage (PS Class)

As per customer requirements

Applicable Standards for Current Transformers

The standards followed by Macroplast for design and manufacturing of current transformers are

  • IEC : 60044-1
  • ISS : 2705
  • BSEN : 60044-1
  • ANSI : C.57.13

** Further, Macroplast also possesses the expertise to manufacture Current Transformers as per client specifications and requirements


Product Code : 02


MACROPLAST PVT. LTD.

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Contact Details
MACROPLAST PVT. LTD.
D-18/2, Surajpur Industrial Area, Site-B, Gautam Buddh Nagar, Greater Noida - 201306, Uttar Pradesh, India
Phone : +918268154239
Fax : 91-120-2560718
Mr. S. K. Mishra (Chairman & Managing Director)

Mobile : +918268154239
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