No-load tap changer (NLTC), also known as Off-circuit tap changer (OCTC) or De-energized tap changer (DETC), is a tap changer utilized in situations in which a transformer's turn ratio does not require frequent changing and it is permissible to de-energize the transformer system.

Beginning with OILTAP® technology, we were the world market leader in transformer tap-change operations. Our VACUTAP® technology revolutionized the on-load tap-changer yet again.

Power transformers equipped with on-load tap-changers (OLTCs) have been the main components of electrical networks and industrial applications for nearly 100 years. OLTCs enable voltage regulation and/or phase shifting by varying the …

OLTC stands for On Load Tap Changer, means voltage is regulated in transformer in running condition. It is installed in a separate chamber and connected with primary winding. It is used in oil type transformer with 17 no’s taping.

2013年8月9日 · 有载分接开关的工作原理，就是在变压器的绕组中引出若干个分接抽头，通过有载调压开关，在保证不切断负荷电流的情况下，由一个分接头切换到另一个分接头，以达到变换绕组的有效匝数，即改变变压器的变压比。 有载分接开关的核心是采用了过渡电路。 用这种方式切换，其装置的材料消耗少，变压器的体积增加的不多，电压可以做的很高，容量也可做的很大。 现场常用的油浸电阻式有载分接开关由调压回路、选择电路、过渡电阻、驱动、和控制电路及各种 …

2025年2月24日 · A successful monitoring strategy incorporates motor current tracking, contact wear calculations, tap position analysis, and temperature differential monitoring. Each of these parameters provides valuable insights into OLTC health, allowing utilities to detect early warning signs and take corrective action before failures occur.

On-load tap-changers (OLTCs) are indispensable in regulating power transformers used in electrical energy networks and industrial applications. OLTC changer alters the turn ratios of the transformer on the system by altering the number of turns in …

2012年2月24日 · OLTC Definition: An On Load Tap Changer (OLTC) is a device in power transformers that regulates voltage without switching off the transformer. No Load Tap Changing Transformer: No Load Tap Changers (NLTCs) are used …

A Motor-drive mechanism is used to change the taps in a transformer in modern transformers. This mechanism uses a set of gears and a spring energy storage unit, which, when completely charged, uses a drive shaft to turn on the tap-changer.

An on-load tap changer (OLTC) from Maschinenfabrik Reinhausen 1st manufacturer, is an electrical device that is used to change the turns ratio of a transformer while it is operating. This allows the output voltage of the transformer to be kept constant, even when the …