News
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You have an invitation to DISTRIBUTECH 2(2025) from JIEZOU POWER(JZP)
DISTRIBUTECH® is the largest, most influential transmission and distribution event in the country, now expanding with focused events on Data Centers & AI, the Midwest, and the Northeast to best support a dynamic industry. DISTRIBUTECH’s® flagship event offers a wealth of education, con...Read more -
Impulse Test of Transformer
Key learnings: ●Impulse Test of Transformer Definition: An impulse test of a transformer checks its ability to withstand high-voltage impulses, ensuring its insulation can handle sudden spikes in voltage. ●Lightning Impulse Test: This test uses natural lightning-like voltages to assess transforme...Read more -
Transformer tank – learn about types, materials, and more!
Transformer tanks are an essential yet often overlooked part of electrical infrastructure. These durable enclosures play a vital role in ensuring the reliable operation of power transformers. But what sets different types of transformer tanks apart, and how do the materials they’re made from impa...Read more -
On-load Tap Changer for Power Transformer
A power transformer with an on-load tap changer (OLTC) can regulate voltage while the transformer is still in use, without interrupting the power supply. OLTCs are important components in power systems because they maintain the desired voltage output. JIEZOU POWER manufa...Read more -
What is a substation?
Electrical substations play a key part in effectively transmitting electricity through our national system. Find out what they do, how they work and where they fit into our electricity grid. There’s more to our electricity system than where pow...Read more -
SWITCHGEAR
What is Switchgear? Electrical circuits handle a predetermined load capacity by design. They must be regulated to prevent excess current from overheating the wiring and overloading the system. An overloaded system is a safety hazard that can da...Read more -
Pressure Relief Device (PRD)
Introduction Pressure relief devices (PRDs) are a transformer's last defense should a serious electrical fault within the transformer occur. As PRDs are designed to relieve pressure within the transformer tank, they are not relevan...Read more -
Comparing Mineral Oil and Vegetable Oil in Transformers
1. Mineral Oil in Transformers Mineral oil, derived from crude petroleum, has been used for over a century as the primary insulating fluid in transformers. It serves two main purposes: Insulation: Mineral oil acts as a dielectric...Read more -
All You Need to Know About Tap Changers
Tap changers are devices that can increase or decrease the output secondary voltage by changing the turn ratio of primary or secondary winding. A tap changer is usually installed on a high voltage section of a two-winding transform...Read more -
The Role of Flanges in Transformers: Essential Details You Need to Know
Flanges may seem like simple components, but they play a crucial role in the operation and maintenance of transformers. Understanding their types and applications helps highlight their importance in ensuring reliable and efficient ...Read more -
The Role of Gas Relays in Distribution Transformers
Gas relays also referred to as Buchholz relays play a role in oil filled distribution transformers. These relays are specifically designed to identify and raise an alert when gas or air bubbles are detected in the transformer oil. The presence of gas or air bubbles in the oil can be an indication...Read more -
Brief introduction of transformer conservator
Brief introduction of transformer conservator The conservator is an oil storage device used in the transformer. Its function is to expand the oil in the oil tank when the oil temperature rises due to the increase of the load of the transformer. At this time, too much oil...Read more