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    1.电气专业:主变压器      2.机械专业:煤磨工作原理     3.水泥工艺专业:配料设计     4.自动化专业:控制系统     5. 石油地质勘探     6.企业宣传
    7.生物    8.医药
原文
一、主要技术参数
1.设备规格:
1.1名 称:三相油浸自冷式有载调压双绕组电力变压器
1.2型 号:SZ10-31500/110
1.3额定容量:31500kVA
1.4额定电压:
一次侧: 110±8×1.25 % kV
二次侧: 6.3kV
1.5相 数: 三相
1.6频 率: 50Hz
1.7冷却方式:油浸自冷ONAN
1.8有载调压特性:17档,每档为1.25%;
2. 电气特性
2.1阻抗电压: Ud=10.5%
2.2连接组别: Ynd11
2.3中性点绝缘水平:60 kV
2.4损 耗:
空 载: 26 kW
负 载: 126 kW
2.5空载电流: 0.35%
2.6油面温升: 52 K
2. 7绝缘等级:A
2.8外形尺寸: 长 ×宽 ×高 (mm)
2.9重 量(t):
器 身:26 油重: 15 总重: 55.5 运输重量: 42.5(带油)
二、主要部件构造要求
1、铁 芯:采用优质晶粒取向冷轧硅钢片。其型号为:(原装进口)生产厂家:日本新日铁 (川崎,德国)
2、绕 组:采用无氧铜绝缘导线。绕组的焊接处和换位处用采用丹尼森绝缘材料包扎。
线圈压板采用足够强度的绝缘材料。
3、壳 体:使用钢板焊接制造,其强度符合国家标准,钢板材质为:Q235号热轧钢板。在喷漆前,应进行喷砂处理,油漆符合国家行业标准,外表漆膜均匀光亮。支托架底脚纵、横向中心距,必须按国标GB/T6451.4-95的规定。
壳体型式:折边钟罩油箱
4、 散热器:采用片式散热器
5、 密封垫圈:变压器密封垫必须无扭曲、变形、裂纹和毛刺,并与法兰面的尺寸相配合;所有密封面必需平整吻合。变压器大盖与油槽限位铁高度适当,保证橡皮密封压紧,不漏渗油。
6、 有载调压开关:(含电控箱、操作机构、控制电缆100米)
型 号:CV□350Y/63-10193W
生产厂家:上海华明电力设备制造有限公司
7、 高压瓷套管(升高座内不带电流互感器,但零相瓷套管升高座内带电流互感器)
型 号: BRDW-110/630-3 BRDLW-72.5/630-4
生产厂家:南京电瓷厂
电流互感器型号:LRB-60-B
变 比:400/5 负荷 1 Ω 连接端:K1 __K4
三、主要供货范围
1、SZ10-31500/110型电力变压器31500kVA 1台
2、有载调压装置 (安装于变压器本体上) 1套
控制电缆 100米
3、瓦斯继电器 1只
4、瓦斯继电器(有载调压开关用) 1只
5、温度继电器 BWY-803A。XMT-288FC Pt100
(提供4—20mA信号) 1只
6、温度变送器 BWY-803A 1只
7、专用工具 1套
若储油柜与变压器本体分开运输时,厂家应带足够的合格的变压器油,以便在变压器安装后补充。为了弥补变压器在运输和安装过程中碰掉的油漆,卖方在发货时应带与变压器外壳颜色一样的油漆,以便买方进行修补;补漆不少于2kg。变压器除按规定带有所需的附属装置外,其它必需的元器件配齐。
四、技术要求及技术约定
1、变压器可以在正常过负荷和事故过负荷的情况下运行。正常过负荷可以经常使用,其允许值根据变压器的负荷曲线、冷却介质的温度以及过负荷前变压器所带的负荷等来确定;制造厂家提供变压器的过负荷特性曲线。
2、 变压器可以在满负荷状态下长期运行。
3、 散热器在出厂前应进行冲洗,冲洗后其法兰口应进行密封处理;买方在安装现场将不再进行冲洗;安装后,散热片之间应可靠连接固定,不得晃动,不漏渗油。


译文
Ⅰ.Main Technical Parameters
1. Equipment Specs:
1.1 Designation:three phase oil-immersed natural cooling on-load voltage regulation duplex winding power transformer
1.2 Model:SZ10-31500/110
1.3Rated capacity:31500kVA
1.4 Rated voltage:
Primary winding: 110±8×1.25 % kV
Secondary winding: 6.3kV
1.5 Phase number: three phases
1.6 Frequency: 50Hz
1.7 Cooling method:oil-immersed natural cooling ONAN
1.8 On-load voltage regulation features:17steps, 1.25%/step;
3. Electric specification
2.1 Impedance voltage: Ud=10.5%
2.2 Link group: Ynd11
2.3 Neutral point insulation level:60 kV
2.4 Loss:
No-load: 26 kW
On-load: 126 kW
2.5 No-load current: 0.35%
2.6 Oil level temperature rise: 52 K
3. 7 Insulation grade:A
2.8 Overall dimension: L × W × H (mm)
2.9 Weight(t):
core and winding assembly:26 oil: 15 Gross weight: 55.5 shipping weight: 42.5(including oil)
Ⅱ.Requirement for the structure of main components
1. Iron core:High quality grain orientated cold rolled silicon steel sheet. Model:(imported with original packaging) Manufacturer:Japan Nippon Steel (kawasaki,Germany)
2.Winding:Oxygen free copper insulated conductor. The welded parts and transpositions on the windings are wrapped up with Denison insulation material.
Winding clamping plate is made with insulation material with sufficient strength.
3 .Shell:manufactured with welded steel plates,with its strength in compliance with the national standard, the quality of the steel plate:Q235 hot rolled steel plate. Prior to spray paint,the steel plates are sandblasted, the paint is in line with the industrial standard,paint film on the surface is uniform and bright. The vertical and horizontal center distance of support bracket footing must be in compliance with GB/T6451.4-95.
Type of Shell:Flanged edge bell jar oil tank
4 .Radiator:Gilled radiator
5.Seal gasket:the seal gaskets used for the power transformer shall be free from twisting, distortion, cracks and burrs,and match the dimension of the flange surface;all the sealing surfaces shall be flat and fit. The cover and oil channel limit steel of the transformer shall be in proper height to assure tight rubber sealing and keep it from leakage.
6.On-load voltage regulation switch:(including electric cabinet, operating mechanism, control cable 100m)
Model:CV□350Y/63-10193W
Manufacturer:Shanghai Huaming Power Equipment Fabrication Co., Ltd.
7.High voltage porcelain bushing(no current transformer is used in the ascending flanged base,but the zero phase porcelain bushing ascending flanged base possesses a current transformer.)
Model: BRDW-110/630-3 BRDLW-72.5/630-4
Manufacturer:Nanking Electric Porcelain Plant
Model of current transformer:LRB-60-B
Transformation ratio:400/5 Load 1 Ω link terminal:K1 __K4
Ⅲ Main Supply Scope
1. SZ10-31500/110 Power Transformer 31500kVA one set
2. On-load voltage regulation device(mounted on the transformer) one set
Control cable 100m
3. Gas relay one
4 Gas relay(for on-load voltage regulation switch) one
5 Temperature relay BWY-803A. XMT-288FC Pt100
(provide 4—20mA signal.) one
6 Temperature transmitter BWY-803A one
7 Special tools one set
In case the conservator and transformer are shipped separately, the manufacturer shall bring sufficient acceptable transformer oil to replenish the transformer after the installation. To repair the paint scratched from the transformer in the process of transit and installation, the seller shall supply the paint in the same color with the surface of the transformer on delivery to facilitate the buyer to repair; the additional paint shall not be less than 2kg. In addition of the specified attachments to the transformer, the necessary components and parts shall also be supplied.
ⅣTechnical Requirement and technical Convention
(1) The transformer is able to operate under the conditions of normal overload and accident overload. The normal overload can be used frequently,its permissible value shall be determined according to the load curve of the transformer, the temperature of cooling medium and the load of the transformer before the overload takes place, etc.;The characteristic curve of overload of the transformer shall be supplied by the manufacturer.
(2) The transformer is able to operate under full load for a long time.
(3)Flush the radiator before delivery and seal the flange opening after flushing;the buyer needn’t flush the flange on installation site;on completion of installation,the radiators shall be connected securely and reliably,without shaking and leakage.



   
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