Product Description

 The 24kV three-phase oil-immersed transformer applies new type insulation structure and improves the ability of short-circuit resistance.The iron core is made of high-quality cold-rolled silicon-steel plate.High-voltage winding group is made of high quality copper wires and it adopts multilayer cylindrical structure.All fasteners have been processed with special treatment to prevent them from loosening.

2 . The use of the environment

Device types: outdoor type
Normal environment conditions of use: the elevation not more than 1000 m
Environmental highest temperature + 40°C, minimum-25°C
The special environment conditions of use: elevation of more than 1000 m
Environmental highest temperature + 40°C, minimum-45°C. (when you order details)
Mounting ambicnt: no corrosive gas, no obvious dirt environment

3 . Carries out the standard

ISO 1461: Hot dip galvanized coatings on fabricated iron and steel articles -Specifications and 
          test methods
IEC 60076: Power transformers.
IEC 60044: Instrument transformers.
IEC 60296: Specification for unused mineral insulating oil for transformers and switchgear.
IEC 60354: Loading guide for oil - immersed power transformers.
IEC 60214: Tap-changers - Part 1: Performance requirements and test methods, 
           Part 2: Application guide.
IEC 60512: Connectors for electronic equipment.
IEC 60137 Insulated Bushings for Alternating Voltages Above 1 kV

4 . Performance characteristics

Low loss and noisy
Compared with normal oil immersed power transformer has no oil storage box and adopts the corrugations on the oil tank as its heat-radiation parts
Oil tank is made by fine cold-rolled steel on an exclusive production-line
Corrugations can expand or contract according to the change of oil volume
Thus the inner space of transformer can be isolated from the air
which can reduce the aging speed of oil and prevent the insulation materials from damping
Oil-immersed transformer possesses a reliable operation and is free from maintenance

Tank

1.Continuing12hours under 20Kpa air pressure, it is no leakage and permanent distortion.
2.Each transformer shall be enclosed in a suitable stiffened welded steel tank of 3
mm thickness minimum
3.The construction employs wieldable steel of an approved grade and shall withstand an internal pressure of 30KN/M2 without permanent deformation
4.The transformer tank is vacuum-proof and suitable for outdoor installation.
5.hermetically sealed transformers with fins.
The tank will be equipped with standard accessories as follows:
-Oil drain valve fitted at the lowest point of the tank at one of the narrow sides,with oil filling facility.
-Oil filter valve located near to the top of the tank.
-2 earthing stainless steel M10 studs with nut and washer.
-Suitable no of lifting lugs.
-Suitable no of pulling lugs.
-1 thermometer pocket.
-Rating plate and connection diagram.

Capacity  (kVA)	Voltage			Vector group	No-load loss (W)	Load loss (W)	Impedance voltage (%)	No-load  current (%)	Gross Weight (kg)	Dimension
	High voltage (KV)	High voltage tapping range	Low voltage (KV)			(75°C)				L*W*H (mm)
30	20kV 22kV 24kV	±5%,                     ±2×2.5%	0.4	Yyn0             Dyn11	90	630	5.5	1.7	500	700*650*900
50					120	910		1.9	600	730*690*950
80					170	1300		1.7	700	770*720*1000
100					190	1570		1.5	750	820*715*1030
125					230	1880		1.4	820	1005*635*1045
160					270	2300		1.3	855	1080*690*1095
200					320	2720		1.2	1050	1230*815*1110
250					380	3180		1.1	1090	1260*825*1160
315					460	3810		1	1280	1270*830*1205
400					540	4500		0.9	1455	1385*895*1260
500					650	5380		0.9	1850	1435*945*1300
630					770	6480	6	0.8	2135	1560*1015*1335
800					930	7840		0.7	2550	1625*1060*1400
1000					1090	10760		0.6	2700	1800*1200*1700
1250					129	12540		0.5	3000	1820*1265*1580
1600					1560	15150		0.5	3400	1860*1290*1730
2000					1850	18180		0.5	4050	1950*1290*1900
2500					2220	21100		0.5	5500	2190*2450*2500

Established in September 2008, ROOQ  Electric Group Co.,Ltd is a technology-oriented enterprise specializing in R&D, production, sales and services of power transformers, HV/LV switch cabinets and related products.
  Since its inception, our company has been committed to the path of professional development. By virtue of its strong technical force, domestic and foreign advanced equipment, innovative ideas and extensive manufacturing experience, it has been certified by ISO9000 and adopts CAD to provide customers with environment-friendly, energy-saving, low-carbon and high-quality products suitable for regional characteristics to meet the market and the basic requirements of different customers. Now it has become one of the key enterprises in the Chinese manufacturing industry of key transformers and HV/LV switchgears.
  Currently the company mainly produces HV/LV power distribution cabinets, pre-fabricated substations, power distribution transformers, HV/LV switches and other products.
   Its products cover the national market of China. Also the products are exported to Central Asia, Africa, Southeast Asia, the Middle East, South America and other countries and regions.
  Based on its complete marketing and service networks,  ROOQ Electric Group Co., Ltd will further expand into the domestic and foreign markets. The company implements a "7*24 service mechanism" and an after-service policy with life-long warranty to actively provide its customers with timely, warm and total services, enhance the product utilization value and premium services and free its customers from any after-sales concerns.



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