中卫干式变压器：中卫干式变压器用途和结构特点

中卫干式变压器用途和结构特点 　　
用途和结构特点
中卫干式变压器按用途分类有:炼钢沪中卫干式变压器.二次电压为110- 250V之间；电石炉中卫干式变压器.二次电压为90-150V ；感应熔炼炉中卫干式变压器，二次电压为400—1000V ；还有炼铁合金、石墨和加热等用的中卫干式变压器。
中卫干式变压器的特点是中卫干式变压器二次电压低，电流大，带负载调整电压。在绕组联结方式上炼钢炉与感应炉用一、二次绕组可进行Y,，D转换，以满足二次电压的变化范围。
电沪中卫干式变压器的低压侧接到电弧华盈非晶合金变压器有限公司炉的三个电极上，电极与炉料之间形成电弧，产生很大的热量来熔化炉料。在中卫干式变压器中.炼钢电弧护是主要的一种。炼钢炉中卫干式变压器在熔炼初期，由于电极与将熔化的金属经常发生短路，使电流增大.为保证绕组不被电动力所损坏，要限制短路电流不超过额定电流的2.5—3倍。为此就必须使中卫干式变压器和短网(中卫干式变压器低压出线铜排和引至电极的铜排或电缆)保持有足够大的合成阻抗。容量在10000k V A以上的中卫干式变压器，能满足此要求。对于小容量的中卫干式变压器，就要采取串入电杭器来限制短路电流。在初期熔炼时，易产生电极间短路.中卫干式变压器应接入电杭器。后期熔炼时.钢块均化成液体，电极间不会产生短路，这时要切除电抗器。
电沪中卫干式变压器的限流电杭器多数做成铁心式.铁心柱用铁饼和保持气的绝缘板叠成。小容量中卫干式变压器，油箱内附有电抗器，大容量的中卫干式变压器.通常单独设置电抗器。
中卫干式变压器均为户内装置。小容量、低电压的电阻炉中卫干式变压器与盐浴炉中卫干式变压器均为干式，带箱壳，自然冷却。中等容量(数百至数千千伏安)的中卫干式变压器为油浸自冷式，大容量的中卫干式变压器则为强迫油循环水冷式。
据专业标准《电弧炉中卫干式变压器》规定，无励磁调压中卫干式变压器的分接变换均为电动操作。
中卫干式变压器储油柜的油位计、信号温度计、铭牌以及分接中卫干式变压器的驱动机构等均不得放在二次侧。
所有中卫干式变压器均装小车，并应便于牵引，滚轮应能90°运转。
中卫干式变压器油箱的结构型式一般为吊心式，如果需要钟罩式，订货时应提出。

Furnace transformer

Uses and structural characteristics
Furnace transformer by use classification are: Shanghai steel transformers secondary voltage is 110 - 250V between; calcium carbide furnace transformer secondary voltage of 90-150V; induction furnace transformer secondary voltage of 400-1000V; still refining ferroalloys, graphite and heating with the furnace transformer.
Furnace transformer secondary voltage transformer is characterized by low current, with load regulation voltage. Windings connected in the way of steel-making furnaces and induction furnaces with a secondary winding can be Y,, D conversion, to meet the second voltage range.
Shanghai electric arc furnace transformer low-voltage side of the receipt of the three electrodes, the arc between the electrode and the charge, resulting in considerable heat to melt the charge. In the furnace transformer. Steelmaking electric arc protection is the main one. Early in the smelting furnace transformer steel, due to the electrode and the molten metal is often short-circuit, so that current increases in order to guarantee windings are not damaged by electric power, to limit the short circuit current does not exceed the rated current of 2.5-3 times. To this end it is necessary to make the transformer and short net (transformer low-voltage outlet copper and lead to the copper electrode electric or cable) to maintain a large enough synthetic impedance. Capacity of more than 10000k VA furnace transformer, to meet this requirement. For small capacity electric transformer, it is necessary to take the string into electrical device to limit the short circuit current of Hangzhou. Melting furnace at an early stage when the short circuit between the electrodes is easy to produce. Hang the transformer should be connected to electrical devices. Post-smelting. Are into liquid steel block, no short circuit between the electrodes, this time to remove the reactor.
Power t电 话：0635-8888299ransformer current limiting Shanghai-Hangzhou-style core made of the majority of devices. Core-keeping with the discus and gas insulated panels quartet built. Small-capacity electric transformer, reactor tank containing a large-capacity electric transformer usually 联系人：陈经理set separately reactor.
Furnace transformer are indoor unit. Small-capacity, low-voltage resistance furnace and salt bath furnace transformers are dry-type transformers with tank shells, natural cooling. Medium-capacity (hundreds to thousands of KVA) transformer oil from the furnace-cooled, high-capacity electric transformer was forced oil circulation cooled.
According to professional standards, "electric arc furnace transformer" provisions of regulating electric-circuit tap changing transformers are electrically operated.
Furnace transformer oil conservator oil level gauge, signal thermometer, plate and tap the drive mechanism protruding on the secondary side.
All electric transformers are loaded car, and should be easy traction, the wheel should be 90 ° operation.
Furnace transformer tank structure type is generally heart-lifting, if you need Bell, orders should be made.

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