STANDARD DIMENSIONS OF NEEK TRANSFORMER

Power Range

1 – 50 kVA (Single Phase)
25 – 10000 kVA (Three Phase)

VOLTAGE SYSTEM

11 kV, 33 kV, 66kV and 132kV, 50Hz

Standards

The Transformers shall be manufactured and tested in accordance with: • The Latest IEC 76 Standards. • The Latest ANSI, VDE and DIN Standards if requested by the customer.

SERVICE CONDITION AND INSTALLATION

Altitude: Up to 1000 m above sea level, other altitude can be designed upon customer requested. Ambient air temp: 40 to 45°C

GENERAL SPECIFICATIONS AND SCOPE

The specifications outlined below cover core type, oil immersed, natural self cooled, single phase and three phase distribution transformers suitable for both outdoor and indoor installation.

Power KVA Phase Voltage System 1100-400 V Voltage System 33000 – 400V Lossess (WATTS) %
IMPEDANCE
L
mm
W
mm
H
mm
OIL WT
kgs
L
(mm)
W
(mm)
H
(mm)
OIL
(ltrs)
WT
(kgs)
NO LOAD LOSSES Load
Loss
75 D C
11 KV 33 KV
25 3 Phase 790 470 1010 90 320 960 770 1540 210 600 75 75 460 4
50 3 Phase 880 520 1070 120 480 1010 780 1450 230 630 120 140 750 4
100 3 Phase 960 770 1230 190 690 1030 830 1600 330 860 220 290 1210 4
150 3 Phase 1030 770 1320 240 900 1210 930 1685 470 1410 295 295 1675 4
200 3 Phase 1420 610 1390 270 1060 1520 970 1730 430 1250 365 500 210 4
250 3 Phase 1560 680 1470 350 1360 1740 780 1760 500 1450 455 700 2550 4

300 3 Phase 1540 750 1490 350 1410 1690 840 1820 530 1600 550 740 3000 4
400 3 Phase 1670 790 1630 410 1600 1700 880 1810 550 1850 745 900 4025 4
500 3 Phase 1820 930 1640 520 2040 1850 890 1950 650 2100 960 1100 5150 4
630 3 Phase 1870 1030 1780 470 2200 2120 1190 2060 860 2890 1200 1300 6800 4
800 3 Phase 1970 1050 1840 630 2590 2150 1070 2070 960 3080 1300 1400 11000 5
1000 3 Phase 2030 1150 1940 670 3000 2250 1160 2080 1030 3550 1500 1600 13000 5
1250 3 Phase 2220 1280 2090 980 4040 2230 1120 2260 1230 415 1600 1700 14500 5
1600 3 Phase 2320 1300 2170 1350 4700 2350 1130 2420 1430 4910 2000 2100 17000 6.25
2000 3 Phase 3070 2140 2290 1430 5600 2490 1260 2490 1640 5910 2600 2700 20000 6.25
2500 3 Phase 2750 1590 2250 1670 6900 2780 1400 2500 2040 7040 3000 3200 24000 6.25
3000 3 Phase 2890 1730 2290 1850 7500 2900 1530 2560 2230 7820 3500 3700 28500 6.25


Power
KVA
Phase Voltage System 11000-230V Losses
(WATTS)
%
Impedance
L
(mm)
W
(mm)
H
(mm)
OIL
(Liters)
WT
(kgs)
No Load
Losses
Load
LOSS 75 C
15 1-Phase 520 440 970 45 180 75 370 4
25 1-Phase 600 490 1020 60 220 130 500 4
50 1-Phase 580 650 1180 80 270 200 850 4

TEMPERATURE RISE
(above Ambient Temperature)
TOP OIL 50 C
WINDINGS 55 C


These figures are approximate for estimation purpose for SILICON Steel Core Type Distribution Transformer. Technical data for transformers above 3000 kva can be provided upon request of the customer.

Note: For indoor installation cable box on HV & LV side is provided and standard / additional accessories can be provided upon customer requirement

* Market items are as per NS Standard for power transformers g]= u’0f= !^^

TO PROVIDE A COMPLETE SOLUTION TO VOLTAGE FLUCTUATIONS

With the expertise in the manufacturing of distribution Transformers under the brand name NEEK, Nepal Ekarat Engineering Co. Pvt. Ltd. Now introduces to our valued customers with the rolling contact type automatic Voltage Stabilizer for the complete protection against voltage fluctuation.

NEEK Rolling contact type automatic Voltage Stabilizer is safe, precise and reliable. Voltage control equipment required essentially for sites have fluctuating voltage conditions that can damage or affect the performances of sophisticated Industrial, Medical, Electronic, Printing or Photographic equipment etc, with output voltage accuracies. It has a silent operation free from the gear tricks of conventional stabilizers. With the new microprocessor controlled control system, which NEEK is developing for the Rolling contact type automatic Voltage Stabilizer and with its digital system. NEEK stands incomparable from the other manufactures of the Rolling contact type automatic Voltage Stabilizer in the country.

NEEK provides customized range for the Rolling contact type automatic Voltage.


INPUT & OUTPUT REQUIREMENTS

Input Voltage

– 240-460 Volts
– 280-460 Volts
– 300-460 Volts
– 320-460 Volts

Output Voltage

400-415-400 Volts

Type

– Balance Input & Balance Load
– Unbalance Input & uUnbalanced Load

Phase

Single Phase
Three Phase


COMPARISON BETWEEN NEEK & THE CONVENTIONAL MAKE AUTOMATIC VOLTAGE CONTROLLER

NEEK Make Roller Type Regulator

  • Power consumption is 0.5 to 1.5% depending upon the model and input voltage variation.
  • Suitable for continuous 100% duty cycle
  • The carbon (graphite) Roller goes on changing which prolongs the life of the rollers.
  • Life at full load is 15-20 years.
  • Negligible losses in full Buck/Boost

Conventional Make with Carbon Brush Regulator

  • Power consumption is 2 to 7% depending upon the model and input voltage variation.
  • Suitable for continuous 30% to 40% duty cycle
  • Since the contact is by brush having flat surface, wear and tear of the brush is more and requires frequent replacement.
  • Maximum life at full load is 2-3 years.
  • Max losses in full Buck/Boost Condition.

ADVANTAGES

  • Reduction in breakdown of electrical equipments.
  • Improvement in power factor (only in case of high voltage).
  • Power saving (reduction in power bills). Uniform quality of end products.