Horizontal External Oil Corrugated Transformer Conservator Tank (BP1 Series)

Your Position: Home > Products > Corrugated Oil Conservator Tank > Horizontal External Oil Corrugated Transformer Conservator Tank (BP1 Series)

Horizontal External Oil Corrugated Transformer Conservator Tank (BP1 Series)

The BP1 Horizontal External Oil Type Corrugated Conservator Tank is a high-performance oil preservation and expansion system designed for oil-immersed transformers.

Widely used in:

Oil-immersed power transformers
Distribution transformers
Compact / package substations
Industrial power systems
Renewable energy projects (solar & wind)

Environmental Adaptation:

C1, C2, C3, C4, C5, Customization PFT.

Send E-mail Get Price WhatsApp

Product Introduction

Sealed Oil Expansion Solution for Reliable Transformer Protection

The BP1 Horizontal External Oil Type Corrugated Conservator Tank is a high-performance oil preservation and expansion system designed for oil-immersed transformers.

Equipped with a stainless steel corrugated expansion core, it ensures complete isolation between transformer oil and ambient air, effectively preventing moisture ingress and oil oxidation.

This design guarantees stable insulation performance, longer transformer lifespan, and reduced maintenance costs, making it an ideal solution for modern sealed transformer systems.

Product Structure

The conservator tank consists of:

Main Tank Body
Stainless Steel Corrugated Expansion Core
Oil Transfer Pipeline System
Oil Filling & Draining Pipes
Air Vent Pipe
Breathing Pipe
Oil Level Indicator
Alarm System (High & Low Oil Level)

Working Principle

The BP1 horizontal external oil conservator uses a metal corrugated expansion core as the volume compensation element.

The inner cavity of the corrugated coreis connected to the atmosphere through a breathing pipe
The outer space between core and tankforms the oil chamber, connected to the transformer tank

When oil temperature changes:

Oil expands → corrugated core compresses
Oil contracts → corrugated core expands

This allows precise oil volume compensation while maintaining complete isolation from air and moisture, ensuring oil quality and dielectric strength.

Key Features & Competitive Advantages

1. Long Service Life & Low Maintenance

Durable stainless steel corrugated core
Minimal maintenance required
Lower lifecycle cost

2. Fully Sealed Oil Protection

Complete separation of oil and air
Prevents oxidation and moisture contamination
Extends transformer service life

3. High Sensitivity Response

Flexible corrugated structure
Fast and accurate response to oil volume changes
Stable system performance

4. Safe Low-Pressure Operation

Maximum working pressure: ≤ 8 kPa
Ensures safe and reliable operation

5. Clear & Accurate Oil Level Indication

Easy-to-read oil level gauge
Real-time monitoring of oil condition

6. Intelligent Monitoring System (Optional)

High & low oil level alarm
Optional digital controller
4–20mA output signalfor SCADA integration
Enables remote monitoring and smart substation management

Frequently Asked Questions

Answers to common pre-sales, technical and after-sales questions about transformers.

❓ Are you a transformer conservator manufacturer or trading company?

We are a professional transformer conservator manufacturer with in-house fabrication, welding, and testing facilities.
👉 This ensures stable quality, faster delivery, and competitive factory pricing.

❓ Why choose your transformer oil conservator supplier?

Direct oil conservator tank factory
Strong custom fabrication capability
15+ years export experience
Fast quotation within 12 hours
👉 We mainly serve transformer manufacturers and EPC contractors.

❓ What types of transformer conservators do you offer?

We supply:
Conventional oil conservator tanks
Diaphragm type conservators
Bladder type conservators
Conservators with oil level indicator
👉 Suitable for oil immersed transformers.

❓ What is the function of a transformer oil conservator?

The conservator is used to:
Compensate oil volume changes
Prevent moisture ingress
Maintain oil quality
👉 Essential for reliable transformer operation and insulation protection.

❓ Can you manufacture custom transformer conservators based on drawings?

Yes, we specialize in custom transformer conservator fabrication based on:
CAD drawings
Technical specifications
Transformer design
👉 OEM & ODM supported.

❓ What materials are used for oil conservator tanks?

We use high-quality:
Carbon steel (Q235 / Q345)
👉 With anti-corrosion treatment for long outdoor service life.

❓ What accessories can be supplied with the conservator?

We can provide:
Oil level indicator (magnetic / glass)
Breather connection
Buchholz relay connection
Valves and flanges
👉 Fully compatible with transformer systems.

❓ What is the difference between diaphragm and bladder type conservators?

Diaphragm type: uses a membrane to separate oil and air
Bladder type: uses a rubber bag for better sealing
👉 Both help prevent:
Moisture ingress
Oil oxidation

❓ How do you prevent oil contamination?

We design:
Airtight sealing structure
High-quality diaphragm/bladder system
👉 Ensuring long-term performance in oil immersed transformer applications.

❓ What tests are conducted before delivery?

Leakage test
Pressure test
Coating inspection
👉 Every unit is tested before shipment.

❓ What standards do your conservators comply with?

IEC standards
ISO quality management system
👉 Suitable for international projects.

❓ What information is required for a quotation?

To provide an accurate quotation, please share:
Transformer capacity (kVA / MVA)
Voltage level
Conservator type (normal / diaphragm / bladder)
Required volume
Drawings (preferred)
Quantity
👉 Drawings will significantly speed up quotation.

❓ Have you supplied conservators for international projects?

Yes, our transformer oil conservator tanks are widely used in:
Substation projects
Power distribution systems
Industrial transformers
Markets:
👉 Southeast Asia / Africa / Middle East / South America

❓ Can you support bulk orders?

Yes:
Stable production capacity
On-time delivery
EPC project support

❓ What is your delivery time?

Standard: 7–10 days
Custom: 15–30 days

❓ What are your payment terms?

We support:
T/T
L/C