⒈ abnormal noise and vibration. ⒉ without local overheating. Noxious gas corrosion insulation creepage surface marks and discoloration caused by carbonation phenomena. ⒊ transformer cooling equipment operation is normal. ⒋ high and low pressure taps should not overheat. Cable head should be no leakage, creepage phenomenon. ⒌ winding temperature rise should be adopted in accordance with the transformer insulation material grades, monitor temperature must not exceed the specified value. ⒍ support insulator should be no cracks discharge traces. Check the winding ⒎ presser is loose. ⒏ indoor ventilation, the core duct should be free of dust and debris clogging the core no rust or corrosion phenomena. Liaocheng Xinxing Transformer Co., Ltd. 0635-8247297 18265578768 (http://www.xxbyqc.com) located in the beautiful northern Shuicheng - Liaocheng. An area of ??124,670 square kilometers; the building area 36,700 square meters; total assets of 365 million yuan. 2011 sales revenue of 370 million yuan; profits of 33.48 million yuan. Has a staff of 586. One senior technical staff 19, 84 mid-level technical staff, leading products 220 kV and below oil-immersed power transformers, amorphous alloy transformer (http://www.lzbianyaqi.com), wound core transformer, 35 kV 10 kV SCB10, SG10 dry-type power transformers, SH15 amorphous alloy dry-type transformers and user requirements for mining transformers, transformer rectifier transformer Liaocheng http://www.xxbianyaqi.com. Annual production capacity of 10 million KVA ......