6~10.5kv 2500kVA 20kv 3150kVA Oil-Immersed Distribution Transformer

• Customization: Available
• Application: Power
• Phase: Three
• Model NO.: S11~S22
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, ISO9001
• Usage: Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: Ceeg
• Rated Capacity: 30~3150kVA
• Primary Voltage: 6/6.3/6.6/10/10.5/11kv/20kv
• Secondary Voltage: 0.4kv
• Frequency: 50/60Hz
• Impedance: 4%/4.5%
• Connection Symbol: Dyn11/Yyn0
• Tapping Range: ±2*2.5%/±5%
• Short Circut Loss: 4~6
• Transport Package: International Wooden Case or According to Client′s
• Trademark: CEEG
• Origin: Jiangsu, China
• HS Code: 8504349000
• Production Capacity: 20

Product Description

Brief Introduction

This series of products feature low loss, low noisy, low temperature rising, low partial discharge and high reliability, as well as core-hoisting free and no leakage. With the approval of the National Transformer Quality Inspection and Testing Center, all the index of the transformer achieve or above the GB/T3837-2003 national standard.

Model

S  F  Z  10-×××/××

S/N	Symbol	Meaning
1	S	Three phases
2	F	Air-cooling(blank for Natural cooling)
3	Z	On-load tap changing(bland for no-load tap changing)
4	10	Symbol of Performance level
5	xxx	Rated capacity,kVA
6	xx	Voltage grade of HV winding,kV

Features 

1.    Scientific and advanced design scheme

By using computer software to analyze the winding electric field under high voltage, it can calculate the exact distribution of winding electric field grads and then to make sure the winding structure can meet the impulse under high voltage. Analyzing and calculating the insulation structure of the transformer and using the scientific insulation structure to ensure the products operate safely. Analyzing and calculating the magnetic leakage and temperature field to ensure the field performance in accordance to the design demand. Optimizing the lamination design to minimize the magnetic distortion in the gap and to enhance the no-load performance.

2.    Iron Cores

The iron core adopts high quality grain-oriented cold-rolled silicon-steel sheet and is cut by a special shearing machine which result in just a tiny burr. The application of multi-steps and 45°all-leaning joints lowers the no-load loss,  no-load current, and noise efficiently. The core clamping device adopts a board structure which result in high mechanical intensity. Fasten nails can ensure enough transformer axis padding block pressure.

3.    High purity oxygen free cooper windings, reduce the load loss

The inner coil was wound directly on the insulation barrel, where chamfering spacers and padding blocks were applied to uniform the electric field and enhance stability. And, BDK-80M synchronized lifting-up equipment was applied in assembly to ensure the axial location of the windings and reinforce the axial strength.

4. Tank

Wide-width steel plate is adopted to reduce welding seams on the flat roof, folded plate type tank, it has a concise and dedicate appearance and also high mechanical strength which passed the standard positive pressure and vacuum test. In addition, special welding technology and groove type flange ensure the tank and the pipes are able of long time use without leakage. Wide plate radiation systems equipped with heavy-duty and low noise blowers raise up the heat dissipating center, improve efficiency, reduce radiating plates, and prevent leakage. It can be directly mounted on the transformer. And capsule type conservator can effectively delay the aging of the oil what is implanted in under vacuum condition to reinforce the electric strength.

5. Protection System

Pt100 thermal resistors temperature control system is generally applied in the transformer body, a pressure relief valve with contacts is equipped on the top of tank, an oil indicator with contact and vacuum relays are equipped on the conservator, and as well, the oil pressure indicator with contacts is equipped in the tank. All this equipment can be applied for signal conversion and transfer. Both HV and LV bushings are pollution-retardant porcelain oil types, which can lengthen the insulation space and be applied in high pollution conditions. Padding plates and terminal case are made of stainless steel to make an elegant appearance.


Technical Parameters
 

Performance Data of the S11-M-30~3150/10 Distribution Transformer

Rated Capacity	HV	Tapping Range	LV	Vector Group	No Load Loss (kW)	Load Loss (kW) (75ºC)	No Load Current (%)	Short-circuit Impedance
30	6 6.3 10 10.5	±5 ±2x2.5%	0.4	Dyn11 Yyn0	0.1	0.63	1.50	4.0
50					0.13	0.91	1.30
63					0.15	1.09	1.20
80					0.18	1.31	1.20
100					0.20	1.58	1.10
125					0.24	1.89	1.10
160					0.28	2.31	1.00
200					0.34	2.73	1.00
250					0.40	3.20	0.90
315					0.48	3.83	0.90
400					0.57	4.52	0.80
500					0.68	5.41	0.80
630					0.81	6.20	0.60	4.5
800					0.98	7.50	0.60
1000					1.15	10.30	0.60
1250					1.36	12.00	0.50
1600					1.64	14.50	0.50
2000					1.94	18.30	0.40	5.0
2500					2.29	21.20	0.40
3150					2.81	26.66	0.40

Performance Data of the S11-M-30~3150/20 Distribution Transformer

Rated Capacity	HV	Tapping Range	LV	Vector Group	No Load Loss (kW)	Load Loss (kW) (75ºC)	No Load Current (%)	Short-circuit Impedance
30	20	±5 ±2x2.5%	0.4	Dyn11 Yyn0	0.10	0.69	2.1	5.5
50					0.13	1.01	2.0
63					0.15	1.20	1.9
80					0.18	1.44	1.8
100					0.20	1.73	1.6
125					0.24	2.08	1.5
160					0.29	2.54	1.4
200					0.34	3.00	1.3
250					0.40	3.52	1.2
315					0.48	4.21	1.1
400					0.57	4.97	1.0
500					0.68	5.94	1.0
630					0.81	6.82	0.9	6
800					0.98	8.52	0.8
1000					1.15	11.33	0.7
1250					1.38	13.20	0.7
1600					1.66	15.95	0.6
2000					1.95	19.14	0.6
2500					2.34	22.22	0.5
3150					2.78	26.42	0.5

Performance Data of the S13-M-30~2500/10 Distribution Transformer

Rated Capacity	HV	Tapping Range	LV	Vector Group	No Load Loss (W)	Load Loss (kW) (75ºC)	No Load Current (%)	Short-circuit Impedance
30	6 6.3 10 10.5	±5 ±2x2.5%	0.4	Dyn11 Yyn0	80	630/600	1.5	4.0
50					100	910/870	1.3
63					110	1090/1040	1.2
80					130	1310/1250	1.2
100					150	1580/1500	1.1
125					170	1890/1800	1.1
160					200	2310/2200	1.0
200					240	2730/2600	1.0
250					290	3200/3050	0.9
315					340	3830/3650	0.9
400					410	4520/4300	0.8
500					480	5410/5150	0.8
630					570	6200	0.6	4.5
800					700	7500	0.6
1000					830	10300	0.6
1250					970	12000	0.5
1600					1170	14500	0.5
2000					1360	18300	0.4	5.0
2500					1600	21200	0.4

Performance Data of the S20-M-30~2500/10 Distribution Transformer

Rated Capacity	HV	Tapping Range	LV	Vector Group	No Load Loss (W)	Load Loss (kW) (75ºC)	No Load Current (%)	Short-circuit Impedance
30	6 6.3 10 10.5	±5 ±2x2.5%	0.4	Dyn11 Yyn0	70	505/480	1.5	4.0
50					90	730/695	1.3
63					100	870/830	1.2
80					115	1050/1000	1.2
100					135	1265/1200	1.1
125					150	1510/1440	1.1
160					180	1850/1760	1.0
200					215	2185/2080	1.0
250					260	2560/2440	0.9
315					305	3065/2920	0.9
400					370	3615/3440	0.8
500					430	4330/4120	0.8
630					510	4960	0.6	4.5
800					630	6000	0.6
1000					745	8240	0.6
1250					870	9600	0.5
1600					1050	11600	0.5
2000					1225	14640	0.4	5.0
2500					1440	14840	0.4

Performance Data of the S22-M-30~2500/10 Distribution Transformer

Rated Capacity	HV	Tapping Range	LV	Vector Group	No Load Loss (W)	Load Loss (kW) (75ºC)	No Load Current (%)	Short-circuit Impedance
30	6 6.3 10 10.5	±5 ±2x2.5%	0.4	Dyn11 Yyn0	65	455/430	1.5	4.0
50					80	655/625	1.3
63					90	785/745	1.2
80					105	945/900	1.2
100					120	1140/1080	1.1
125					135	1360/1295	1.1
160					160	1665/1585	1.0
200					190	1970/1870	1.0
250					230	2300/2195	0.9
315					270	2760/2630	0.9
400					330	3250/3095	0.8
500					385	3900/3710	0.8
630					460	4460	0.6	4.5
800					560	5400	0.6
1000					665	7415	0.6
1250					780	8640	0.5
1600					940	10440	0.5
2000					1085	13180	0.4	5.0
2500					1280	13360	0.4