MSENSE® DGA

Online-DGA-Monitoring of Power Transformers

Winding problems cause 45% of all transformer failures. The online oil analyzers of the MSENSE® DGA series ensure a measurably longer service life for your transformer. They continuously check for fault gases and moisture in the insulation medium, as well as a wide range of additional gases – depending on the device type. The MSENSE® DGA devices send you a timely warning in the event of electrical and thermal problems. The DGA 2/3 is the perfect early warning system for many transformers, the DGA 5/9 offers intensive monitoring for strategically important transformers with detailed fault classification. 
 

Your Advantages at a Glance

  1. Precise monitoring of the primary leading indicators hydrogen, carbon monoxide and humidity

  2. Optional fault classification of thermal and electrical faults by detection of CxHy

  3. Maintenance-free and without additional operating materials

  4. Robust design for use in any climate zone and for any application

  5. Practical installation even during operation

  6. User-friendly software

  7. Functional expansion through easy integration into ETOS®

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Product Information

Online Oil Analysis for Measurably Longer Service Life

The oil analysis devices of the MSENSE® DGA family from Maschinenfabrik Reinhausen provide ideal protection for transformers. They continually detect the gas concentration of the most important fault gases, hydrogen and carbon monoxide, as well as the moisture levels of the insulation medium. Depending on the device type, they also test a broad spectrum of gases, providing critical added security for transformers of particular strategic importance. 

Device name MSENSE® DGA 2 MSENSE® DGA 3 MSENSE® DGA 5 MSENSE® DGA 9
Property Early warning system
Alerts
Early warning system
Alerts
Intensive monitoring
Fault analysis
Intensive monitoring
Fault analysis
Measuring component:
Moisture in the oil X X X X
Hydrogen H2 X X X X
Carbon monoxide CO - X X X
Carbon dioxide CO2 - - - X
Methane CH4 - - - X
Acetylene C2H2 - - X X
Ethylene C2H4 - - X X
Ethane C2H6 - - - X
Oxygen O2 - - - X
Application Important transformers Important transformers Critical and strategically important transformers Critical and strategically very important transformers
Retrofit X X X X
Interpretation and fault detection:
Measurement of absolute values X X X X
Trend analysis X X X X
Fault classification - - X X
Rogers-Diagram - - - X
Duval triangle - - - X

 

The MSENSE® DGA devices provide accurate results at all times. This provides you with a reliable status diagnosis of your transformer at any time during operation. Much like a blood test in humans, the results of an online DGA of the transformer oil reveal developments inside the transformer. Faults trigger a warning or alarm at an early stage, before conventional protective devices disconnect the equipment from the mains.

According to international standards and experts in the field, hydrogen, carbon monoxide and moisture in the insulating oil of power transformers are the primary early indicators of potential thermal or electrical damage to the transformer (IEC 60475, IEC 60567, ASTM D 4057). In its “Guide for Transformer Maintenance” from 2011, for example, CIGRE pointed out that five of six frequently occurring problems can be detected quickly and affordably using dissolved gas analysis (DGA) during transformer operation. The MSENSE® DGA devices, optionally and in combination with ETOS®, provide fault classification on the basis of the following standards:

  • Duval
  • Doernenburg
  • Rogers
  • IEC 60599
  • IEEE C57.104

Classification is made possible by determining the concentration of carbon dioxide, acetylene, ethylene, methane, ethane and oxygen.

If desired, you can use the user-friendly MSET and MSET DGA parameterization software to change settings from the factory pre-sets. For example, you can adjust individual limit values and the number of measurements taken per day. Furthermore, based on the MSENSE® DGA 5 and MSENSE® DGA 9 device variants, MSET DGA offers the option of intensive monitoring and fault classification. Both solutions are included in the scope of delivery. MSET and MSET DGA present the measured data in a clear and understandable way and prepare trends graphically or exportable.

  • Continuous concentration measurement of the most important fault gases hydrogen and carbon monoxide as well as the humidity in the insulation medium
  • Testing of up to 8 gases, which enables fault classification in accordance with common standards (MSENSE DGA 5 and DGA 9)
  • Convenient oil sampling connection with maximum security against pollution of the oil samples (MSENSE DGA 2 and DGA 3)
  • Easy installation on the transformer by only one technician, even during operation
  • Reduction of operating and maintenance costs: Thanks to NIR technology in combination with the patented headspace analysis, the use of carrier and calibration gases is unnecessary (MSENSE DGA 5 and DGA 9)

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