160kVA 6kV Oil-Immersed Transformer Compliant with GB Standards

Product Overview

160 kVA three-phase oil-immersed distribution transformer, 6 kV / 0.4 kV. Suitable for voltage conversion in industrial, commercial, and rural grid applications. Available in S13 / S20 / S22 series (SH15 amorphous alloy optional), compliant with national energy-efficiency standards.

Key Features

Low-loss silicon steel core — Grain-oriented steel with step-lap construction cuts no-load losses and improves operating efficiency.
Copper windings — High mechanical strength and excellent short-circuit withstand for long-term reliability.
Natural oil circulation cooling (ONAN) — Corrugated fin radiator design ensures stable temperature rise without forced cooling.
Sealed, maintenance-free tank — Corrugated or conservator-type tank keeps moisture out and extends service life.
Quiet operation — Low noise and low temperature rise make it suitable for residential and urban installations.

Typical Applications

Industrial plants and manufacturing workshops
Commercial buildings, shopping malls, and hotels
Rural power grid and village distribution networks
Small substations and prefabricated (box-type) substations
Mining, infrastructure, and construction sites
Renewable energy step-down stations (PV / wind auxiliary supply)

Standards & Certifications

Design Standards:GB 1094, GB/T 6451, GB 20052
Quality System:ISO 9001
CE Certification:Available upon request

Q1: What does “6kV oil-immersed transformer” mean?

A: It is a transformer that uses transformer oil for insulation and cooling, with a primary (high-voltage) rated at 6 kV and a secondary (low-voltage) at 0.4 kV, suitable for stepping down medium-voltage supply to building or plant level.

Q2: Which GB standards does this transformer comply with?

A: It is manufactured per GB 1094 (power transformers), GB/T 6451 (oil-immersed power transformers), and GB 20052 (energy efficiency limits and grades), ensuring full compliance with Chinese national standards.

Q3: What is the difference between oil-immersed and dry-type transformers?

A: Oil-immersed transformers use transformer oil for cooling and insulation, offering lower cost and better heat dissipation for outdoor use. Dry-type transformers use air and cast resin, are oil-free and fire-safe, preferred for indoor and fire-sensitive spaces.

Q4: Can the voltage ratio be customized?

A: Yes. Besides 6kV/0.4kV, common ratios such as 6.3kV/0.4kV, 10kV/0.4kV, and 10.5kV/0.4kV can be manufactured according to project requirements.

Q5: What accessories are included or available?

A: Standard supply includes the transformer with radiator, conservator (or sealed tank), and terminal box. Optional accessories include off-circuit / on-load tap changer, temperature indicator, oil level gauge, and protective enclosure.

Export-standard plywood crate or nude packing with waterproof plastic film and steel banding. The transformer is fixed on a steel base frame with lifting lugs. Suitable for sea, air, and land transportation. Gross weight and dimensions will be confirmed in the final packing list.