CMM hot dry air supply system

суховей 4

Range of Application

As delivery time and purchase price of high voltage power transformers are constantly increasing, the extension of the life time of existing transformers becomes more essential

One of the major causes for transformer failure is aging of its insulation material. Paper, pressboard and wood form about 10% of transformer weight.

One decomposition product in the cellulose de-polymerization of these materials is water, which is stored in the insulation and partially in the transformer oil. Other reasons of water penetration in the transformer are transformer non-hermeticity and air dehumidifier malfunction. The well-established conventional process for transformer servicing is supply of dry air to transformer tank when disassembled. Therefore we offer our equipment

Principle of Operation

The unit operation principle is based on atmospheric air drying in two synthetic zeolite-filled adsorbers, which operate in cycles. Dry air is purified from mechanical impurities in the filter. The air is heated by heater, which consists of 3 heating elements and supplied to transformer tank.

The unit can be operated in three operation modes:

  • air drying and heating mode
  • adsorbent regeneration (the unit filled with) mode – (regeneration of technical specifications of damp synthetic zeolite by means of hot air heating up to the temperature of 380 – 400 °С).
  • adsorbent (other equipment filled with) regeneration mode.

Specifications

Parameter

Value

1 Dry hot air capacity, m3/h

150

2 Dry air dew point, °С, no higher than minus 50
3 Dry air pressure, mPa/bar, no higher than

0,01/0,1

4 Compressor
capacity, m3/h

150

air pressure, mах, mPa/bar 0,02/0,2
5 Adsorbent load per one adsorber, kg, no more than

190

6 Number of adsorbers, pcs.

2

7 Adsorbent regeneration temperature, °С 380-400
8 Air heater power consumption, kW, no more than

20

9 Rated power, kW, no more than

26

10 Three-phase nominal voltage at 50Hz, V

380

11 Air output temperature for other adsorbent regeneration, °С

390

12 Dry air maximum temperature, °С

100

13 Dimensions, mm, no more than:
length

1450

width

1150

height

1950

14. Weight, kg, no more than

1200

Download:

Download PDF (Adobe PDF Reader required)

Our location:

GlobeCore has facilities and agents in many countries around the globe. Find one close to you

Follow us in social networks:     

For further details contact: contact@oil-regeneration.com

For making an order please request a callback or call us.


See more video about transformer oil purification

обновлено: September 8, 2017 автором: globecore