11/0.4kv 500kVA Oil Immersed Power Transformers

• Application: Power, Rectifier
• Phase: Three
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Model NO.: SZ9
• Usage: Power Transformer
• Frequency Characteristics: Low Frequency
• Shape of Core: Ring
• Brand: Rockwell
• Material: Copper, Minral Oil
• Color: Grey or Optional
• Transport Package: Wooden
• Specification: IEC/ANSI/GB
• Trademark: Rockwell
• Origin: China
• HS Code: 8504231100
• Production Capacity: 10000

Product Description

SZ series on-load tap power transformer

SZ-M,SZ10kV,35kV,GB1091GB/T6451-2008

Product description

The performance of our SZ-M series, SZ series 10kV and 35kV load-ratio voltage transformer conform to the standard of IEC and GB1094 "power transformer" and GB/T6451-2008" technical parameters and requirements of three phase oil immersed power transformer". The iron core is made of quality cold rolled silicon steel sheet, and in full-miter non-puncture structure. The coil is made of quality oxygen-free copper, featuring good outlook and safe running. The products are widely used in power transmission and distribution of industrial and agricultural power networks.

Feature

Load-ratio voltage regulation, high reliability, advanced level of performances, reasonable economical indicators.
The core joints are of stepped shape with 3 steps, and the surface of the core is coated with cured paint to lower losses and noise.

The winding has novel  structure and its oil passage is reasonable designed. Its newly designed insulation structure helps enhance its mechanical strength and the short circuit withstanding ability.
The oil tank is in two types-fully enclosed type and the type fitted with an oil conservator.

Main technical data for 10kV level, SZ9-M,SZ10-M,SZ11-M series three-phase oil sealed transformer with on-load tap changer

Rated power (kVA)	High Voltage (kV)	H.V.Tap Range	Low voltage (kV)	Vector group	Short circuit Impedance (%)	No-load Loss (W)			on-load Loss (W)			No-load current (%)
						9 The 9 type Of loss	10 The 10 type Of loss	11 The 11 type Of loss	9 The 9 type Of loss	10 The 10 type Of loss	11 The 11 type Of loss
200	6 6.3 10	±4×2.5%	0.4	Yyn0 Dyn11	4	480	430	380	3060	2910	2910	1.5
250						56	500	450	3600	3420	3420	1.4
315						670	600	540	4320	4100	4100	1.4
400						800	720	640	5220	4960	4960	1.3
500						960	860	770	6210	5900	5900	1.2
630					4.5	1200	1080	960	7650	7270	7270	1.1
800						1400	1260	1120	9360	8890	8890	1
1000						1700	1530	1360	10980	10430	10430	1
1250						1950	1760	1560	13050	12400	12400	0.9
1600						2400	2160	1920	15570	14790	14790	0.8
2000						2830	2550	2260	18850	17910	17910	0.7
2500					5	3350	3020	2680	21000	19950	19950	0.7

Main technical data for 35Kv level, SZ9,SZ10,SZ11 series three-phase oil-immersed transformer with on-load tap changer

Rated power (kVA)	High Voltage (kV)	H.V.Tap Range	Low voltage (kV)	Vector group	Short circuit Impedance (%)	No-load Loss (W)			on-load Loss (W)			No-load current (%)
						9 The 9 type Of loss	10 The 10 type Of loss	11 The 11 type Of loss	9 The 9 type Of loss	10 The 10 type Of loss	11 The 11 type Of loss
800	35 38.5	±3×2.5%	6.3 6.6 10 10.5 11	Yd11 YNd11	6.5	1320	1190	1060	10500	9980	9980	1.05
1000						1570	1410	1260	12800	12160	12160	1
1250						1860	1670	1490	15400	14630	14630	0.9
1600						2250	2030	1800	18500	17580	17580	0.85
2000						2880	2590	2300	20250	19240	19240	0.8
2500						3400	3060	2720	21730	20640	20640	0.8
3150					7	4040	3640	3230	26010	24710	24710	0.72
4000						4840	4360	3870	30690	29160	29160	0.72
5000						5800	5220	4640	36000	34200	34200	0.68
6300					7.5	7040	6340	5630	38700	36770	36770	0.68
8000						9840	8860	7870	42750	40610	40610	0.6
10000						11600	10440	9280	50580	48050	48050	0.6
12500					8	13680	12310	10940	59850	56860	56860	0.56
16000						16460	14810	13170	74020	70320	70320	0.54
20000						19460	17510	15570	87140	82780	82780	0.54
25000						23700	21330	18960	107000	101650	101650	0.5
31500						27500	24750	22000	126000	119700	119700	0.45