Transformer Continuous Drying
DC-260DH Online Transformer Dryout System
The DC-260DH system is designed for online drying of transformer insulation (insulating oil and cellulose insulation). The DRYCORE technology involves connecting the DC-260DH system to the transformer and keeping it connected throughout the entire drying process. The operating principle of the DRYCORE online transformer dryout system is based on oil circulation in a closed loop: first, the oil flows out of the transformer, then passes through three cartridges filled with sorbent, where the sorbent removes moisture contained in the oil, after which the dehydrated oil flows back to the transformer.
Description
The DC-260DH system is designed for online drying of transformer insulation (insulating oil and cellulose insulation).
The DRYCORE technology involves connecting the DC-260DH system to the transformer and keeping it connected throughout the entire drying process. The operating principle of the DRYCORE online transformer drying system is based on oil circulation in a closed loop: first, the oil flows out of the transformer, then passes through three cartridges filled with sorbent, where the sorbent removes moisture contained in the oil, after which the dehydrated oil flows back to the transformer.
Due to the fact that, in a loaded transformer, moisture migrates from the cellulose insulation into the oil and back, the application of DRYCORE technology makes it possible not only to dehydrate the insulating oil, but also to reduce the moisture content in the cellulose insulation.
The main difference between the DC-260DH and DC-260D systems is that the DC-260DH system offers additional capabilities and options, including:
- Presence of a protective housing;
- measurement of the moisture content of oil at the system outlet with local indication;
- visual monitoring of the sorbent saturation level;
- visual monitoring of the filter contamination level.
Specification
|
Parameter |
Value |
||
|
Capacity, gpm (L/h), at least |
0.13 (30) |
||
|
Water absorption capability, gal (liters) |
2.4 (9) |
||
|
Adsorbent load per column, lbs (kg) |
44 (20) |
||
|
Parameters of processed oil: |
|||
|
– max moisture content, ppm |
< 5 |
||
|
– ISO 4406 purity grade |
-/14/12 |
||
|
– min dielectric strength, kV |
>65 |
||
|
Outlet pressure, psi (bar) |
29 (2) |
||
|
Oil output head, in (m) |
790 (20) |
||
|
Max power required, kW |
0.2 |
||
|
Power supply |
|||
|
– voltage, V |
400 |
||
|
– AC frequency, Hz |
60 (50) |
||
|
Dimensions, in (mm), max |
|||
|
– length |
52 (1,310) |
||
|
– height |
77 (1,960) |
||
|
– width |
22 (557) |
||
|
Max weight, lbs (kg) |
838 (380) |
||
Benefits
Key Benefits of the DC-260DH
- Universal Compatibility: the system can be connected to transformers of any type and age, making it suitable for both new and aged power equipment without design limitations.
- Fast Installation: connecting the system to the transformer takes less than one hour, allowing rapid commissioning without prolonged outages or disruptions to normal operation.
- Effective Moisture Removal: the sorbent captures moisture regardless of its temperature or physical state, ensuring stable dehydration performance under varying operating conditions.
- Energy-Efficient Operation: oil dehydration is performed without heating, eliminating additional thermal stress on the insulating oil and the solid insulation while reducing energy consumption.
- Minimum Operator Involvement: the system operates automatically and requires no continuous operator supervision, reducing labor demands and human error risks.
- Flexible Installation Options: the unit can be installed either temporarily for corrective drying or permanently for continuous moisture control, providing flexibility in maintenance strategy and asset management.
- Protective Housing: provides additional reliable protection against atmospheric and mechanical impacts.
Details
1
Description
The DC-260DH system is designed for online drying of transformer insulation (insulating oil and cellulose insulation).
The DRYCORE technology involves connecting the DC-260DH system to the transformer and keeping it connected throughout the entire drying process. The operating principle of the DRYCORE online transformer drying system is based on oil circulation in a closed loop: first, the oil flows out of the transformer, then passes through three cartridges filled with sorbent, where the sorbent removes moisture contained in the oil, after which the dehydrated oil flows back to the transformer.
Due to the fact that, in a loaded transformer, moisture migrates from the cellulose insulation into the oil and back, the application of DRYCORE technology makes it possible not only to dehydrate the insulating oil, but also to reduce the moisture content in the cellulose insulation.
The main difference between the DC-260DH and DC-260D systems is that the DC-260DH system offers additional capabilities and options, including:
- Presence of a protective housing;
- measurement of the moisture content of oil at the system outlet with local indication;
- visual monitoring of the sorbent saturation level;
- visual monitoring of the filter contamination level.
2
Specification
|
Parameter |
Value |
||
|
Capacity, gpm (L/h), at least |
0.13 (30) |
||
|
Water absorption capability, gal (liters) |
2.4 (9) |
||
|
Adsorbent load per column, lbs (kg) |
44 (20) |
||
|
Parameters of processed oil: |
|||
|
– max moisture content, ppm |
< 5 |
||
|
– ISO 4406 purity grade |
-/14/12 |
||
|
– min dielectric strength, kV |
>65 |
||
|
Outlet pressure, psi (bar) |
29 (2) |
||
|
Oil output head, in (m) |
790 (20) |
||
|
Max power required, kW |
0.2 |
||
|
Power supply |
|||
|
– voltage, V |
400 |
||
|
– AC frequency, Hz |
60 (50) |
||
|
Dimensions, in (mm), max |
|||
|
– length |
52 (1,310) |
||
|
– height |
77 (1,960) |
||
|
– width |
22 (557) |
||
|
Max weight, lbs (kg) |
838 (380) |
||
3
Benefits
Key Benefits of the DC-260DH
- Universal Compatibility: the system can be connected to transformers of any type and age, making it suitable for both new and aged power equipment without design limitations.
- Fast Installation: connecting the system to the transformer takes less than one hour, allowing rapid commissioning without prolonged outages or disruptions to normal operation.
- Effective Moisture Removal: the sorbent captures moisture regardless of its temperature or physical state, ensuring stable dehydration performance under varying operating conditions.
- Energy-Efficient Operation: oil dehydration is performed without heating, eliminating additional thermal stress on the insulating oil and the solid insulation while reducing energy consumption.
- Minimum Operator Involvement: the system operates automatically and requires no continuous operator supervision, reducing labor demands and human error risks.
- Flexible Installation Options: the unit can be installed either temporarily for corrective drying or permanently for continuous moisture control, providing flexibility in maintenance strategy and asset management.
- Protective Housing: provides additional reliable protection against atmospheric and mechanical impacts.