How 2500KVA Electric Transformers are Made

RickFox below had the correct concept, only a few missing washers, many metal chips down into the windings, painter spraying chromate or zinc paint with no mask, and using the old style paper & jute insulation (which actually works good in oil), and no pretesting before final assembly. We did this also, and it was the PCB oils which made these designs durable. Later, some of us got cancer. In the US, this would be a crime against humanity, but no worries over there.

Great video. Just natural sounds. No bullshit music.

looks like a very serious craftwork. Amazing to see, how a handful people build such one.

Сам работаю на трансформаторном заводе, но до такого "технологического уровня" нам конечно далеко. Особенно умиляет покраска бака из краскопульта и пропитка катушек в корыте из бочки. Жаль не показаны изготовление бака и резка ламелей для магнитопровода.

Transformer production facilities are the perfect place for flip flops. I always say

Great craftmanship. Very nicely build coils and assembly. A few missing washers and spring washers on the connections.

Молодцы мужики, лайк однозначно. Привет из России.

Тяжёлый труд...надо все правильно подогнать и изолировать каждый, процесс долгий и трудоёмкий...Удачи и Здоровья всем! Молодцы! Sehr gut!

Amazing crafstmanship & industrial skilled workers, but it's sad they're not being provided with PPE (personal protective equipment) such as respirators (masks) or gloves when handling the solutions, torches and solder as well as the painter.

Handwork without any protection, gloves, glasses, special clothes. The true cost of it is much

عمل متقن جدا ،في مجال تصنيع الترانسات يجب استعمال مواد جيدة جدا المهم النتيجة ، شكرا لكم

ما شاء الله دائما الابداع في باكستان حتى المعمل بسيط ومتواضع

In the West, this would be done in a clean room... These guys are way ahead of us in cost and quickness.

Время пол первого ночи 🌙 настал момент смотреть как индусы что то мастерят

9:43 Professional electrical installation :))) 9:51 Painting without mask 😲

I'm not an electricity power engineer, but it looks like each low voltage phase (secondaries) consists of 2 windings in parallel. I guess this is simply because a single winding would be to stiff to wind on by hand. The high voltage primaries looks also to have 2 windings each as well, one with taps, the other without. In operation at the lightest loads, the transformer primary would have just the phase windings without taps connected to the incoming supply. As an automatic 'on load tap changer' detects secondary voltage drop with increasing load , tapped windings are switched in parallel to restore the secondary voltage, i.e. automatic tap changing takes place without interruption to the supply.

Not good, safety First then do work.

The complete and total disregard for worker safety is astounding.

That's copper, not aluminium - means premium transformer

Torque wrenches? Torque wrenches? We don't need no steenking torque wrenches!