Products
4000 Kva Three Phase Oil Immersed Transformer

4000 Kva Three Phase Oil Immersed Transformer

The 4000 Kva Three Phase Oil Immersed Transformer is a power device used to convert electrical energy of one voltage and current into electrical energy of another voltage and current while keeping the frequency constant. It has a rated capacity of 4,000 kVA, a three-phase design, and improves heat dissipation and insulation performance through oil-immersed cooling.

Technical Specifications & Parameters

To ensure precise engineering integration, the standard technical parameters of the ZIKAI 4000 kva three phase oil immersed transformer are detailed in the table below:

Parameter Item

Specification Details

Brand Name

ZIKAI

Product Name

Three Phase Oil Immersed Power Transformer

Rated Capacity

4000 kVA

Phase Number

3-Phase

Rated Frequency

50 Hz / 60 Hz

Primary Voltage Range

6 kV / 10 kV / 11 kV / 22 kV / 33 kV / 35 kV (Customizable)

Secondary Voltage Range

0.4 kV / 0.415 kV / 6.3 kV / 10.5 kV (Customizable)

Vector Group

Dyn11 / Yyn0 (Or specified by client)

Cooling Method

ONAN (Oil Natural Air Natural) / ONAF (Optional)

Insulation Class

Class A

Tap Changer Type

NLTC (Off-circuit) / OLTC (On-load)

Short-Circuit Impedance

5.0% - 7.5% (Subject to voltage class)

Applicable Standards

IEC 60076, GB 1094


Technical Advantages & Engineering Features

Optimized Thermal Management

The corrugated cooling fins and radiator panels are engineered to maximize surface area. The circulation of the transformer oil rapidly transfers core heat to the external environment, preventing localized hot spots and maintaining stable operating temperatures under high ambient conditions.

Core and Coil Efficiency

Constructed with high-permeability, grain-oriented silicon steel sheets, the magnetic core features a multi-step mitered joint structure. This design lowers no-load losses, reduces eddy currents, and minimizes operational noise levels in compliance with international environmental standards.

Robust Electrical Insulation

The mineral oil undergoes multi-stage filtration and dehydration before injection. It provides high dielectric strength and chemical stability, protecting the internal copper windings from moisture ingress, oxidation, and electrical flashovers.

 



System Applications

The ZIKAI 4000 kva three phase oil immersed transformer is deployed across diverse demanding electrical networks:

Grid Transmission & Distribution: Installed in utility substations to manage voltage conversion between transmission lines and local distribution networks.

Industrial Power Supply: Suited for heavy industries such as metallurgy, mining facilities, automobile manufacturing, and chemical processing plants that require massive, uninterrupted power loads.

Public Infrastructure: Provides stable power delivery for sensitive metropolitan infrastructure, including subway transit systems, large hospital complexes, and university campuses.


Quality Control & Protective Mechanisms

Our manufacturing process incorporates multiple layers of safety and monitoring equipment to prevent grid failures:

Pressure Relief Devices: Automatically releases internal gas pressure in the event of an internal thermal fault.

Oil Temperature Indicators (OTI): Provides real-time thermal monitoring with built-in alarm and trip contacts for automated circuit breaker activation.

Buchholz Relay: Installed on the piping between the conservator and the main tank to detect gas generation and oil surges, ensuring early fault detection.



Zi Kai 4000 kva three phase oil immersed transformer Details

certificates


FAQ

1.What is your packaging standard?

Usually we use standard foam and carton packaging. If you have special requirements, we can also meet your requirements.


2.Why do you buy from us instead of other suppliers?

More than 10 years experience in design and manufacture of high voltage switchgear accessories. It is one of the largest star suppliers in the industry, and has won international and domestic praise, and has been shortlisted for the National Grid.


3.What services can we provide?

Acceptable delivery methods :FOB,CFR,CIF,EXW,FCA, Express;
Accepted payment currency: USD, EUR, GBP, RMB;
Payment methods accepted: Wire transfer, L/C, MoneyGram, credit card, Western Union, cash;
Languages: English, Chinese


SHIPPING METHODS


Hot Tags: 4000 Kva Three Phase Oil Immersed Transformer, China, Manufacturer, Supplier, Factory
Send Inquiry
Contact Info
If you have any enquiry about quotation or cooperation, please feel free to email or use the following inquiry form. Our sales representative will contact you within 24 hours.
X
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies. Privacy Policy
Reject Accept