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DISTRIBUTION TRANSFORMERS
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Single Phase Transformer
Applicable Standards 
- IEC (International Electro technical Commission)
- ANSI (American National Standard Institution)
- BS (British Standards)
- IS (Indian Standard)
Specification
make conventional type, 1 Phase, 50 Hz, Oil immersed,naturally cooled, Pole mounted / Platform mounted, double wound with Aluminium / Copper, Step up/Step down core type continuous duty transformers having no load voltage ratio from 5 KVA to 100 KVA upto 33 KV Class with ‘A’ Class Insulation and designed to withstand Short Circuit, & Impulse Test in accordance to ANSI / IEC / BS / IS. Completely self Protected type Transformers are also available for protection on both HV & LV Side. Details of Characteristics & dimensions of standard transformers with standard fittings manufactured in accordance with ANSI C 57 latest., readily available in stock and can be delivered within 1 weeks from the date of order confirmation. The temperature rise will be 60/65° C in Oil/Winding respectively over a maximum ambient temperature as per ANSI. The transformers will be manufactured as per ANSI C 57 latest, complete with fittings/accessories as stated below.
| KVA |
Efficiency
(%) |
Voltage
Regulation(%) |
W
(mm) |
D
(mm) |
H
(mm) |
Oil
(l) |
Weight
(Kg) |
| 5 |
97.60 |
2.05 |
400 |
520 |
770 |
12 |
69 |
| 10 |
98.00 |
1.79 |
450 |
570 |
800 |
17 |
97 |
| 15 |
98.23 |
1.56 |
480 |
600 |
850 |
23 |
120 |
| 25 |
98.25 |
1.58 |
530 |
620 |
1030 |
65 |
205 |
| 37.5 |
98.58 |
1.26 |
650 |
650 |
900 |
38 |
244 |
| 50 |
98.29 |
1.60 |
670 |
650 |
950 |
45 |
253 |
| 75 |
98.53 |
1.30 |
740 |
720 |
950 |
62 |
340 |
| 100 |
98.72 |
1.18 |
795 |
750 |
100 |
78 |
440 |
| 167 |
98.92 |
1.15 |
850 |
825 |
1065 |
116 |
675 |
Note
Due to improvements continuously taking place in design, the details given may vary marginally in respect of No Load Losses, Load Losses and overall dimensions. However the variations will be within permissible limits as per Applicable Standards. The details given here are for standard transformer with standard fittings. The details may depend upon the optional fittings/specific requirement of customer. For details, Please contact our Marketing Office or fill our enquiry/feedback form.
Three Phase Tranformer
Applicable Standards
- IEC (International Electro technical Commission).
- ANSI (American National Standard Institution).
- BS (British Standards).
- IS (Indian Standard).
Description
manufactures a wide range of distribution and power transformers ranging from 10 KVA to 5000 KVA. These transformers can be free breathing or hermetically sealed. Conventional transformers are fitted with a conservator with breather for free breathing while hermetically sealed are without breathing with bolted cover. Hermetically sealed transformers are totally maintenance free and are particularly suited for use in exposed outdoor environments such as moisture, salt or dust laden atmospheres. They are used extensively in chemical plants, oil and gas terminals where poor accessibility makes regular maintenance undesirable. Transformers immersed in synthetic coolants are suitable for use indoors, with adequate ventilation, or near to the load centre where oil would not be considered environmentally acceptable. The liquid filled transformers can be supplied with cooling either by corrugations on the side of the tank or Pressed steel radiators mounted on tank body. Transformers can be filled with either oil or one of several low flammability synthetic fluids such as midel. Both types can be supplied with HV and LV Switchgear incorporated into substations. can supply conventional/hermetically sealed/bolted type, indoor/outdoor type, pole/platform mounted 3 phase, 50/60 Hz, oil immersed, ONAN/ONAF/ OFWF cooled, step up/step down, double wound with Al/Cu conductor, Continuous duty transformers from 5 KVA to 20 MVA upto 33 KV Class with ‘A’ Class Insulation and designed to withstand Short Circuit, & Impulse Test in accordance to IEC / BS / ANSI / IS / NEEMA.
Standard Transformers
Specification for ( Standard Transformer)
make outdoor type, 3 phase, 50 Hz, oil immersed, conventional bolted cover, ONAN cooled, Pole / Platform mounted, double wound with Cu conductor, step up, core type continuous duty transformers with + 2.5% to - 7.5% taps on HT side for HT variation and leads to be brought out on off circuit tap changing switch with locking device and outside indicator arrangement and connected in delta/star as per Vector group ref. Dyn11. The temperature rise will be 50/55° C in Oil/Winding respectively over a maximum ambient temperature as per IS. The transformers will be manufactured as per IS: 2026 latest, complete with fittings/accessories as stated below.
| Rated Primary Voltage : 11KV Secondary Voltage : 416/240V |
ONAN Cooled, Outdoor type, Oilimmersed Copper Wound, Open Type with Conservator |
Capacity
kVA |
Efficiency at 100%
load (%) |
Voltage Regulation P.F.= 1 (%) |
Noise Level
db (A)
: 1m |
Outline Dimension Approx.(mm) |
Oil qty (Litres) |
Total weight (Kgs.) |
| P.F.=1.0 |
P.F.=0.8 |
H |
L |
W |
| 50 |
97.48 |
96.85 |
2.26 |
45 |
1300 |
1080 |
520 |
115 |
420 |
| 100 |
97.71 |
97.14 |
2.06 |
46 |
1400 |
1230 |
550 |
150 |
600 |
| 160 |
98.19 |
97.73 |
1.63 |
47 |
1480 |
1290 |
630 |
210 |
825 |
| 200 |
98.30 |
97.88 |
1.52 |
47 |
1580 |
1340 |
675 |
260 |
990 |
| 250 |
98.32 |
97.90 |
1.51 |
48 |
1655 |
1385 |
750 |
320 |
1200 |
| 315 |
98.33 |
97.92 |
1.50 |
50 |
1735 |
1385 |
830 |
360 |
1400 |
| 400 |
98.44 |
98.05 |
1.42 |
50 |
1800 |
1410 |
950 |
370 |
1600 |
| 500 |
98.50 |
98.13 |
1.37 |
52 |
1850 |
1520 |
1000 |
450 |
1920 |
| 630 |
98.62 |
98.27 |
1.31 |
52 |
1920 |
1620 |
1030 |
530 |
2230 |
| 800 |
98.56 |
98.20 |
1.37 |
54 |
2000 |
1830 |
1030 |
675 |
2700 |
| 1000 |
98.63 |
98.29 |
1.32 |
54 |
2100 |
2040 |
1040 |
780 |
3160 |
| 1250 |
98.72 |
98.40 |
1.29 |
56 |
2140 |
2070 |
1210 |
840 |
3400 |
| 1500 |
98.78 |
98.48 |
1.24 |
56 |
2240 |
2150 |
1240 |
970 |
3900 |
| 2000 |
98.81 |
98.51 |
1.22 |
52/3cm |
2350 |
2230 |
1390 |
1080 |
4625 |
| 2500 |
98.88 |
98.60 |
1.18 |
52/3cm |
2480 |
2300 |
1420 |
1375 |
5700 |
| 3000 |
98.92 |
98.65 |
1.14 |
52/3cm |
2570 |
2380 |
1450 |
1530 |
6330 |
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