干式三相变压器说明书

干式电力变压器

Dry Transformers 【使用说明】【Hand book 】

干式电力变压器使用说明

■SG 、DG 、OSG 、ODG （三相、单相、自耦）干式电力变压器，是我公司专门为各类进

口设备和国产设备生产的系列产品，具有适用负载广泛、能承受瞬时超栽、可长期连续工作的特点。■型号表示方法

联接组初级星形

次级星行有零线输出线电压（V ）输入线电压（V ）额定容量（KVA ）干式变压器

三相□

D 单相带O 表示自耦

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Handbook of dry transformer

SG 、DG 、OSG 、ODG （single-phase 、three-phases 、auto transformer ）dry transformers are special Products of HANGHENG,which are for the purpose of imported devices and Chinese products.They have the advantages for widely used loads and can bear the instant over load and even work continuously for a long period.

Type description :

Connection group primary Star connection secondary star connect with null writing Output Voltage （V ）Input Voltage （V ）

Rated Capacity （KVA ）Dry Transformer

Three-phase □

D single phase Auto transformer with “D”

■使用条件

a)海拔不超过1000米b)最高温度+45℃c)

最高日平均气温+35℃

d)最高年平均气温+25℃e)

最低气温-30℃(适用于户外式变压器)

f)最低气温-5℃(适用于内式变压器)g)相对湿度≤90%

h)电源电压波形近似于正弦波i)多相电源电压应近似于对称■Working conditions:a)altitude no more than 1000m b)max.temperature+45℃c)

max.average temperature per day+35℃

d)max.average temperature per year+25℃e)

min.temperature-30℃(applicable for out-door transformer)

f)min.temperature-5℃(applicable for in-door transformer)g)relative humidity ≤90%

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h)wave of power supply voltage approximately sin-wave

i)multi-phase power supply should be approximately symmetric

■安装环境

a)变压器应安装在通风干燥、无有害的烟雾和蒸汽、腐蚀性的尘埃、水蒸汽、烟雾、严重

潮湿、滴水的环境中；

b)变压器四周应有一定的空间，以便维修、保养；

c)安装场所应无严重的震动和颠簸。

■接线

a)变压器输入、输出电源线截面配线应满足其相应容量的电流值大小要求；

b)输入、输出三相电源线，应按变压器接线板母线颜色：黄、绿、红分别接A相、B相、

C相，中性零线应与变压器中性零线相接，接地线与变压器外壳（如变压器带有外壳，应与箱体标志对应）。

■Installtion Environment:

a)Transformer should be installed and dry area without any harmful smoke and gas,erosive

dust,water-gas.smoke flog,serious humidity;

b)There must be enough place around the transformer to ensure the reparation and

maintenance;

c)There should be no serious fluctuation at installation site;

■Wiring:

a)Input&Output power supply cables of transformer should be equipped to meet the

correspoudent capacity requirements in accordance to current.

b)Three-phase power supply cables for both input and output should be according to:

A-phase(yellow),B-phase(green)and C-phase(red).Centrual cable of power supply should be connected to outer cover of transformer.(If there is outer cover of transformer,it should be consistent to the symbol of box).

■空载检查和运行

a)通电前请用兆欧表测试变压器的绝缘电阻，铁芯对绕组的电阻应≥2MΩ；

b)检查输入接线应准确无误；

c)上述检测完毕后方可空载通电，并测试（或观察）输入端与输出端电压是否符合要求；

d)完成上述程序并确认正确无误后即可接上负载运行；