31.5mva 66kv Double Winding Power Transformers with on Load Tap Changer 69 Kv Three Phase Two Windings with Octc

31.5mva 66kv Double Winding Power Transformers with on Load Tap Changer 69 Kv Three Phase Two Windings with Octc image

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Basic Info.

Model NO.

sz-31500/69/6.3

Usage

Power Transformer

Frequency Characteristics

Power Frequency

Shape of Core

Ring

Brand

Ville

Power

Hydroelectric (Power) Station

Transport Package

The Accessories Packed in Plywood Cases,The Main B

Specification

IEC60076

Trademark

ville

Origin

Ningbo China

HS Code

8504109000

Production Capacity

5000/Year

Product Description

31.5mva 66kv Double Winding Power Transformers with on Load Tap Changer 69 kV Three phase two windings with OCTC

Technical parameters:

Rated Capacity(MVA):	31.5
Voltage ratio HV(KV):	69
Voltage ratio LV(KV):	6.3
Voltage ratio HV Tapping Range(kv):	± 8 x 1.25%
Connection symbol:	YND11
No-load Loss(KW):	33.7
No-load Current(%):	0.45
Full-load Loss(KW):	126.9
Impedance(%):	9

Reference Temperature		° C	75
No-Load Losses at Principal Tapping:		W	9.0 kW
Looses of Cooling Fan System		W	/
Insulation Levels (LI/AC):			LI325AC140/LI125AC55
No Load Current:	@ Un	% In	0.56
No Load Current:	@ 1.05 Un	% In	0.68
Sound Level:		dB	< 67
Short Circuit Impedance at Principal Tapping:	P/S	% Un	8~10%
	P/T	% Un
	S/T	% Un
Reference Temperature		° C	75
Top Oil Temperature Rise:		°C	51K
Average Winding Temperature Rise:		°C	64K
Insulation Resistance (Reference Temperature = 20°C):
HV/LV /		Mohms	≥1000
HV/GR – LV/GR –		Mohms	≥1000

11 ~330 kV power system of power plant, substation, mining enterprise and etc.

Transformer Description Specifications

35 kV  Three-phase two windings power transformer with OLTC

35 kV  Three-phase two windings power transformer with OCTC

66 kV  Three-phase two windings power transformer with OLTC

66 kV  Three-phase two windings power transformer with OCTC

110 kV  Three-phase two windings power transformer with OCTC

110 kV  Three-phase two windings power transformer with OLTC

110 kV  Three-phase Three windings power transformer with OCTC

220 kV  Three-phase two windings power transformer with OCTC

220 kV  Three-phase two windings power transformer with OLTC

220 kV  Three-phase Three windings power transformer with OLTC

330 kV  Three-phase two windings power transformer with OCTC

330 kV  Three-phase two windings power transformer with OLTC

330 kV  Three-phase Three windings power transformer with OLTC

66KV/35KV/10KV Earthing transformer

20KV S11-M Series distribution transformer

10KV Three-phase full sealed distribution transformer with OCTC

10KV Three-phase full sealed distribution transformer with OLTC

10KV S11- MR Full sealed spiral core transformer

10KV D11 Type single- phase oil-immersed  transformer

20kv SH15-M Series amorphous alloy distribution transformer

10kv SH15-M Series amorphous alloy distribution transformer

ZGS Pad-mound transformer substation

YB series Pad-mound transformer substation

Parameter base on IEC standard, more details  Kindly contact with us

Product Features

1. Long life cycle

2. Hign insulation level

3. Oil leak proof design

4. Excellent control for cooling

5. Reasonabkle accessories selection

6. Strong short circuit withstand ability

7. Low loss, Low noise, Free maintenance

Advanced Design

1. Adopting the art standard three dimesion design software to produce correct and complete engineering documentation.

2. Adopting the craft of high frequency -welding and winding-Hydraulic compaction to improve short circuit ability.

3. Adopting the craft of core Hydraulic compaction to improve the strength of core for reducing the noise level.

4. Designing the transformer base on the worst short circuit conditions for avoiding short circuit issue.

5. Adopting Electric Stress field calculation program to guarentee insulation level.

6. Adopting high quality rubber gaskets in groove for leak.

Quality Assurance

1. Adopting the Quality Control Verification Card to control quality in the whole manufacturing operations.

2. Strictly selecting the transformer raw material and the suppliers of accessories in domestic and abroad.

3. All transformers get authentication of ISO9001, ISO14001, OHSAS18001 AND CE.

4. Comprehensive Training for workes and staffs to improve service quality.

Typical projects

1.156MVA 230KV POWER TRANSFORMER FOR ECUADOR STATE POWER GRID

2.63MVA 154KV POWER TRANSFORMER FOR TURKEY

3.50MVA 69KV POWER TRANSFORMER DURING KEMA TESTING

4.30MVA 66KV POWER TRANSFORMER FOR PARAGUAY

5.1.5MVA-23KV POWER TRANSFORMER FOR CHILE SOLAR PLANT

6. 220kV power transformer Substation in United States.

7. Auto-transformer150MVA/138KV Power Substation in Ecuador

8. Power traformer 50000kVA 60kV installing in Peru

Packaging & Shipping

Our Services

1. Pre sale service

A. Make technical solution

B. Send quotation, technical data sheet and drawing

C. Make manufacturing plan, testing plan, and shipping plan

2. In sale service

A. Supervise the manufacturing schedule totally in accordance with the plan

B, send photos to customer during every manufacturing process(hold point)

C. Inform the customer one week before testinng.

D. Book hotel and ticket for customer if they will come do FAT.

3. After sale service

A. Installation and commissioning

B. Training the workers

B. Quick response within 12 hours any time

D, provide 12 months gurantee period normally.

Reference project:

Plant:

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