Home > Products > TRANSFORMER > VOLTAGE TRANSFORMER 500 KVA
VOLTAGE TRANSFORMER 500 KVA
- 11 Unit / Units per Month
- mumbai
- T/T L/C D/P D/A
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Product Details
Place of Origin: | Gujarat, India | Brand Name: | PEC | Model Number: | 500 KVA |
Product Description
DISTRIBUTION TRANSFORMER |
PRODUCT RANGE |
Power& Distribution Transformers in 11 & 33 KV voltage class. |
STANDARDS |
Power Transformer are designed and tested as per IS: 2026, BS-171, iec-76 & IEC-726. |
VECTOR GROUP |
Transformer will be connected as per vector group reference Dyn11. Other vector groups can be offered as per specifie requirements. |
TERMINAL ARRANGEMENT |
H. V. – Bare Bushings or cable box, L.V. – Bare Bushings or Cable Box. Disconnecting chambers can also be provided on both HV and LV Cable boxes. |
CORE |
The core is constructed from low loss, cold rolled, grain oriented. Annealed lamination of electrical sheet steel conforming to the latest international standards. Special frame is built in –house for clamping the core to reduce the magnetic noise as well as making the whole structure rigid and robust. |
STANDARD FITTINGS |
1- Monogram plate, Rating and diagram plate, Earthing terminals – 2 nos, Cover lifting hooks Lifting lugs, |
2- Jacking Lugs (500 KVA & above), Prismatic glass oil level indicator Drain-cum bottom filter valve with plug, |
3- Oil filling hole with plug on conservator, Oil conservator with drain plug Air release plug |
4- Silicagel air breather, Bi-directonal flat rollersHV terminals-outdoor bushings |
5- LV additional neutral-1 No. outdoor bushing without socket(for star connected enclosed LV terminals) |
6- Pressed sheet radiators (tank mounted up to 800 KVA and detachable thereafter) Filter valve with plug |
7- Thermometer pocket Oil temperature Indicator (stem type) |
8- Externally operated off circuit tap changing switch ,Pressure relief valve without electrical contacts |
9- Sampling valve (for 2000 KVA & above Trf. only) |
ACCESSORIES (OPTIONAL) |
1-LV and HV cable boxes2-Winding temperature indicator3-Buchholz relay4-Magnetic oil level gauge 5-Marshalling box 6-Disconnecting chamber |
WINDINGS |
Coils area wound with electrolyatic high conductivity paper covered or synthetic enameled copper conductors. Cooling ducts area provided to keep the hot spot temperature as low as possible. Coils area dried in electric ovens. Rigid connection support and coil clamping is provided to ensure high short circuit strength. |
|
TAPPING |
Toppings from +5% to -5% in step of 2.5% for HV variation or as per customer’s requirement. |
B. ON LOAD TAP CHANGER Tapping range as per specific requirements can be offered. OLTC for remote/auto/parallel opration can also be offered |
OIL |
Oil is tested for resistivity, dielectric and acidic characteristic conforming to IEC-296/IS-335 before topping up, oil is filtered thoroughly |
TANKS |
The tanks are made of M.S. Steel plates/sheets with adequate bracing & stiffners. Tanks are pressure tested to withstand any type of inside or outside pressure. All the external surfaces are given a primary coat of zinc chromate, red oxide and two finishing coat of grey paint. The inner surfaces are given a coat of heat and oil resisting paint. |
PAINTING |
All the external surfaces are given a primary coat of red oxide and two finishing coats of paint. Paints and enamel varnish used confirm to IS: 104 & 2932. |
TERMINAL ARRANGEMENT & BUSHING |
Following arrangements are provided: (a) H.V.-Bare or cable box bushings (b) L.V.-Bare or cable box bushings, disconnecting chambers can also be provided on both HV& LV cable boxes. Bushing conforms to IS: 3347, 2099, HV/LV bushing terminals of brass /copper conformers to IS: 3347 Section-II metal part. |
GASKETS & JOINTS |
All gaskets used for making oil tight joints to be with cork as base banded by oil resisting synthetic material or rubber. Neoprene rubber is used for oil tight joint for HV& LV terminals. The gaskets conforms to IS:4253, part II-1980 (Reaffirmed 1999) NC 777, RC 70C. |
QUALITY CONTROL & ROUTINE TESTS |
All Power Transformers undergo rigorous quality control checks and area routine test as per IS in our fully equipped laboratory. Any specific test required by the customer can also be arranged.
|
TECHNICAL PARTICULARS DESCRIPTION | UNIT | PARTICULARS | ||||||||||
Continuous rating | KVA | 100 | 200 | 315 | 500 | 630 | 750 | 1000 | 1250 | 1600 | 2000 | 2500 |
Supply voltage | KV | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
Normal voltage ratio at normal tap | KV | 11 / 0.433 | 11 / 0.433 | 11 / 0.433 | 11 / 0.433 | 11 / 0.433 | 11 / 0.433 | 11 / 0.433 | 11 / 0.433 | 11 / 0.433 | 11 / 0.433 | 11 / 0.433 |
BSS vector Group | - | D y n 11 | D y n 11 | D y n 11 | D y n 11 | D y n 11 | D y n 11 | D y n 11 | D y n 11 | D y n 11 | D y n 11 | D y n 11 |
Method of cooling | - | ONAN | ONAN | ONAN | ONAN | ONAN | ONAN | ONAN | ONAN | ONAN | ONAN | ONAN |
Maximum temperature rise at normal loading | Deg. C. | |||||||||||
40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | ||
a) Oil | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | |
b) Winding | ||||||||||||
Impulse level | KVp | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 |
a) 1/50 full wave | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | |
b) 1/50 chopped wave | ||||||||||||
Max. flux density at normal voltage and frequency | Tesla | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
Max current density | A / mm | |||||||||||
2.95 | 2.95 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | ||
a) Primary winding | 2.85 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | |
b) Secondary winding | ||||||||||||
Iron loss at normal voltage & tapping | W | 220 | 460 | 650 | 850 | 950 | 1200 | 1250 | 1650 | 2000 | 2300 | 3000 |
Copper loss at rated load & 75 deg. C. | KW | 1.8 | 3.1 | 4.2 | 6.1 | 7.2 | 8.2 | 11.5 | 13 | 19 | 23 | 25.5 |
Magnetizing current % of full load current | % | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
Total oil required | Ltrs | 201 | 276 | 385 | 490 | 610 | 675 | 800 | 900 | 1050 | 1250 | 1500 |
Weights | Kgs | 322 | 490 | 770 | 1100 | 1230 | 1340 | 1600 | 1750 | 1875 | 2000 | 2400 |
Core and Winding | 706 | 1054 | 1494 | 2248 | 2460 | 2700 | 3300 | 3600 | 3900 | 4500 | 5200 | |
Complete trf. with oil | ||||||||||||
Overall dimensions (appx) | mm | |||||||||||
a) Height | 1420 | 1535 | 1650 | 1975 | 1975 | 1975 | 2100 | 2200 | 2200 | 2300 | 2300 | |
b) Length | 1080 | 1235 | 1450 | 1630 | 1630 | 1630 | 1700 | 1700 | 1700 | 1800 | 2000 | |
c) Width | 1055 | 1065 | 1130 | 1560 | 1560 | 1560 | 1700 | 1900 | 2100 | 2500 | 3000 |
Contact Us
- POWER ENGINEERS COMPANY
- Contact nameATUL KHOSLA
- Phone91-9714-777713
- Address967/2/2, GIDC, MAKARPURA,
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