Transformer Explosion-Proof Moisture Absorber

(Silica Gel Breather / Dehumidifier)

Product Introduction

[Ziyang]  |  [Shenyang, China]

1.1  Introduction

The moisture absorber is a critical air-purification component mounted at the air-inlet terminal of the conservator (oil storage tank) in oil-immersed power transformers and instrument transformers. Its main body consists of a fully transparent, heavy-duty tempered-glass cylinder, clamped securely between the upper and lower flanges by threaded rods.

According to customer requirements, the cylinder can be filled with blue silica gel or orange silica gel (moisture absorbent). At the bottom of the absorber, there is a fully transparent double-layer glass oil cup, filled with transformer oil, which acts as an airtight liquid seal against ambient moisture.

Model Designation

XS □—□-□

Code	Meaning
XS	Moisture Absorber Code
First □	Original color of silica gel — White (W) / Blue (B) / Orange (O)
Second □	Moisture absorbent mass (kg)
Third □	Design serial number

1.2  Uses

This device serves as an air-purification and breathing system for power equipment. Installed at the terminal of the conservator’s air inlet, it effectively filters dust particles and moisture from the ambient air before the air enters the transformer.

By ensuring that only clean, dry air comes into contact with the insulating oil, the moisture absorber maintains the oil’s dielectric strength and overall electrical performance, thereby extending the service life of the transformer and associated equipment.

Typical installation points:

• Oil-filled power & distribution transformers
• Instrument transformers (CT / PT)
• Conservator (oil storage tank) breather pipes
• Other oil-immersed electrical equipment requiring clean, dry air intake

1.3  Features

1. (1) Extended Filtration Path — The clean room uses a fully transparent, lengthened tempered-glass tube. This design extends the air-filtration path and contact time with the desiccant, delivering filtration efficiency that is significantly higher (approx. +30%) than that of conventional moisture absorbers.
2. (2) Real-Time Visual Monitoring — The base adopts a double-layer transparent tempered-glass structure. Once the oil cup is filled, operators can directly observe the absorber’s “inhalation and exhalation” (breathing action) while the transformer is in normal operation, without any disassembly.
3. (3) Transport Protection Cap — A red protective cap at the base prevents the silica gel from being contaminated during shipping and handling. Note: This cap is for transportation only — it MUST be removed before filling the oil cup with transformer oil and commissioning the unit.

2. Technical Data

Item	Specification / Option
Desiccant (Silica Gel)	Blue indicating silica gel / Orange indicating silica gel (customer selectable)
Desiccant Original Color	White (W) / Blue (B) / Orange (O)
Absorbent Mass	Customized per model (kg) — see model designation
Main Body	Fully transparent lengthened tempered-glass cylinder
Sealing / Clamping	Screw-clamped between upper and lower flanges
Oil Cup	Fully transparent double-layer glass, filled with transformer oil
Protection Cap	Red cap for transport only (remove before commissioning)
Filtration Efficiency	Approx. +30% vs. conventional absorber
Standards	IEC 60076 / relevant national standards (as applicable)

3. Advantages

Feature	Benefit
Transparent tempered-glass body	Visual inspection of desiccant color / saturation at a glance
Lengthened filtration path	≈ +30% efficiency; longer desiccant service life
Double-layer oil cup	Reliable liquid seal; clear view of breathing action
Screw-clamp flange design	Quick assembly and silica-gel replacement, minimal downtime
Transport protection cap	Prevents contamination before commissioning

4. Ordering Information

To receive a quotation and technical proposal, please provide the following when contacting us:

1. Transformer / conservator type and rated voltage
2. Desiccant preference — Blue / Orange / White (W / B / O)
3. Absorbent mass required (kg)
4. Flange dimensions and connection details (drawing preferred)
5. Order quantity and destination port

Send us your conservator drawing (DWG / DXF / PDF) and we will provide a free design & quotation proposal within 24 hours.