MESSKO® MTRAB® 2.5

Maintenance-free dehydrating breathers

Ever longer operating times and ever higher current densities lead to constantly increasing demands on operating equipment. The maintenance-free MTRAB® dehydrating breathers continuously dehumidify and monitor the breathing cycle of power transformers - in all climatic zones. They regenerate themselves. This ensures maximum operating times and safety, and also massively reduces costs. The MTRAB® devices have been proven over 90,000 times worldwide. The intelligent algorithm ensures that the IEC 60076-22-7 standard is complied with at all times.

 

 

 

Your Advantages at a Glance

  1. Reduces operating costs and increases operational reliability

  2. Actively protects the insulation medium against humidity

  3. Condition-dependent and self-learning algorithm

  4. Significantly higher efficiency than market competitors

  5. Easy to integrate into ETOS® – Embedded Transformer Operating System

  6. Simple to retrofit on existing equipment

  7. Successful around the world and fit for the future in accordance with IEC 60076-22-7

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Product Information

The Latest Technology for Optimum Operation and Reduced Operating Costs

The MTRAB® 2.5 reduces operating costs immediately upon installation. In contrast to conventional dehydrating breathers, the MTRAB® 2.5 regenerates the silica gel desiccant via sensor control, and at the ideal time – based on the breathing cycle. This eliminates the need for costly replacement of the desiccant. Visual inspections are no longer necessary thanks to integration into the control and SCADA systems. Summary: A significant increase in the operational reliability of the transformer – because there is no risk of moisture ingress due to the desiccant being replaced too late or incorrectly.

The latest generation is packed with more than 15 years of experience with our customers. 

The MTRAB® 2.5 is certified in accordance with the latest standard, IEC 60076-22-7.

This standard also includes:

  • Data logger incl. software (software optional)
  • Extended overvoltage protection in accordance with EN 60664-1 Category III
  • IP66/IP67 degree of protection
  • Corrosion protection C4H or CX in accordance with IEC 12944
  • Test button for manually checking the function, moisture level at the device output and message chains (included as standard)
  • Direct integration into monitoring and SCADA systems
  • Prepared for integration into ETOS® (optional)

 

 

APPLICATION MTRAB® 2.5-type SILICA GEL
Tap changer DB100 1,1 kg
Arc suppression coil (Petersen coil) DB100 1,1 kg
Air-filled cable terminal boxes DB100 1,1 kg
Traction transformers DB100 1,1 kg
Network transformers ≤40 MVA DB100T 1,1 kg
Phase shifters ≤ 40 MVA DB100T 1,1 kg
Reactors ≤ 40 MVA DB100T 1,1 kg
Network and step-up transformers > 40 MVA ≤ 200 MVA DB200T 2,2 kg
Phase shifters > 40 MVA ≤ 200 MVA DB200T 2,2 kg
Reactors > 40 MVA ≤ 200 MVar DB200T 2,2 kg
Generator and network coupling transformers 200 MVA DB200D or 2 x DB200T 4,4 kg
Phase shifters > 200 MVA DB200D or 2 x DB200T 4,4 kg
Reactors > 200 MVar DB200D or 2 x DB200T 4,4 kg
HVDC transformers DB200D or 2 x DB200T 4,4 kg
Furnace transformers DB200G 2 x 2,2 kg
Cavern transformers DB200G 2 x 2,2 kg
GSU machine transformers DB200G 2 x 2,2 kg

 

The MTRAB® 2.5 DB100 with alpha-control is a condition-controlled system, recommended for use on tap changers, arc suppression coils, air-filled cable terminal boxes and traction transformers. The desiccant is regenerated depending on the condition. Silica gel fill level: 1,1 kg with α-control.

Good to know: The main function of dehydrating breathers is to dehumidify the ambient air. As a result of the thermal compression of the insulation medium, the ambient air flows from the environment to the expansion tank of the transformer and tap changer (referred to as inhalation). During inhalation, moisture must be prevented from penetrating into the equipment with the air flow, as this reduces the insulating effect due to the contamination of the insulating medium.

 

The MTRAB® 2.5 DB100T with beta-control is a self-learning system, recommended for use on transformers with cyclic loads (network transformers, phase shifters, reactors). In addition to monitoring the humidity, the device determines a time window in which the oil conservator exhales and the desiccant is regenerated. Silica gel fill level: 1,1 kg with β-control.

Good to know: The main function of dehydrating breathers is to dehumidify the ambient air. As a result of the thermal compression of the insulation medium, the ambient air flows from the environment to the expansion tank of the transformer and tap changer (referred to as inhalation). During inhalation, moisture must be prevented from penetrating into the equipment with the air flow, as this reduces the insulating effect due to the contamination of the insulating medium.

The MTRAB® 2.5 DB200T with beta-control is a self-learning system, recommended for use on transformers with cyclic loads (network transformers, step-up transformers, phase shifters, reactors). In addition to monitoring the humidity, the device determines a time window in which the oil conservator exhales and the desiccant is regenerated. Silica gel fill level: 2,2 kg with β-control.

Good to know: The main function of dehydrating breathers is to dehumidify the ambient air. As a result of the thermal compression of the insulation medium, the ambient air flows from the environment to the expansion tank of the transformer and tap changer (referred to as inhalation). During inhalation, moisture must be prevented from penetrating into the equipment with the air flow, as this reduces the insulating effect due to the contamination of the insulating medium.

The MTRAB® 2.5 DB200D with beta-control is a self-learning system, recommended for use on transformers with cyclic loads (generator transformers, network coupling transformers, phase shifters, reactors, HVDC transformers). In addition to monitoring the humidity, the device determines a time window in which the oil conservator exhales and the desiccant is regenerated. Silica gel fill level: 2 x 2,2 kg with β-control.

Good to know: The main function of dehydrating breathers is to dehumidify the ambient air. As a result of the thermal compression of the insulation medium, the ambient air flows from the environment to the expansion tank of the transformer and tap changer (referred to as inhalation). During inhalation, moisture must be prevented from penetrating into the equipment with the air flow, as this reduces the insulating effect due to the contamination of the insulating medium.

The MTRAB® 2.5 DB200G with gamma-control is ideal for special applications, such as cavern transformers, furnace transformers and GSU machine transformers with aperiodic breathing behaviors. If the humidity level in the air flowing towards the transformer exceeds the standardized value, the desiccant chambers are regenerated in sequence. Silica gel fill level: 2 x 2,2 kg with γ-control.

Good to know: The main function of dehydrating breathers is to dehumidify the ambient air. As a result of the thermal compression of the insulation medium, the ambient air flows from the environment to the expansion tank of the transformer and tap changer (referred to as inhalation). During inhalation, moisture must be prevented from penetrating into the equipment with the air flow, as this reduces the insulating effect due to the contamination of the insulating medium.

The MTRAB® 2.5 is equipped with a data logger of the latest generation as standard (optional software needed). The MTRAB® MSET software allows the device function and processes (dehumidification and regeneration) to be monitored and analyzed at all times. This means that it ensures additional safety through equipment monitoring. Long-term analysis: Benefit from the key operating parameter – residual humidity – being recorded over a time period of up to 10 years. 

MTRAB® MSET is available in these language versions: German, English, Chinese, French, Italian, Korean, Portuguese, Russian, Spanish.

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