Kelman MINITRANS
The MINITRANS is a low-cost on-line discrete multi-gas DGA transformer monitoring unit.
Knowledge of the condition of transformers is essential for all electrical networks and on-line monitoring of transformers is an increasingly vital component of successful asset management programs. The information provided by multi-gas on-line DGA allows valuable asset capabilities to be maximized and expensive failures to be avoided.
Dissolved Gas Analysis (DGA) and moisture measurement of the insulation oil are recognized as the most important tests for condition assessment of transformers. Traditionally performed in a laboratory environment, the Kelman™ MINITRANS provides for on-line discrete DGA monitoring of key gases associated with arcing, cellulose degradation and general fault conditions.
Configurable Alerts
- Two sunlight visible front panel LED arrays
- User configurable relay contacts
- Alarms can be set or changed locally or remotely using Perception software
- Caution and alarm modes can be used to automatically increase sampling frequency
Cutting Edge Technology
- Three key fault gases plus moisture
- Automated headspace gas extraction
- State of the art photo-acoustic spectroscopy (PAS) measurement technology
- No carrier or calibration gases required
- Sampling frequency up to once per hour
Ease of Use
- Easy installation: no outages required reducing expense and inconvenience for user
- No consumables and minimal maintenance reduces running costs and site visits
- Extensive local and remote communications options available
- Sampling frequency user-configurable, versatile and flexible
- LCD display provides up to date information
Key Benefits
- Cost effective on-line DGA
- Remote insight into transformer condition
- Discrete measurement of 3 key gases: Hydrogen, Carbon Monoxide and Acetylene; plus Moisture
- Faults can be detected in their infancy
- Generic fault type can be classified from results
- Transformer load and output can be optimized safely
- Aids condition based and predictive maintenance strategies
- Available with AC or AC/DC power supply
Applications
The MINITRANS facilitates entry into discrete on-line DGA and moisture monitoring for transformers and other oil insulated filled electrical equipment. The MINITRANS gives insight on developing faults, paper degradation and electrical arcing. It provides trending of gas-in-oil through its close integration with GE’s powerful Perception™ Fleet software suite and/or users own software, historian and SCADA systems.
At a price that facilitates higher volumes of monitor deployment, The MINITRANS can be utilized to monitor any size of transformer, but is most widely employed to expand multi-gas on-line DGA coverage beyond the typical candidates of large, system critical or compromised transformers. It helps asset owners incorporate on-line DGA across a larger portion of their fleet, with a view to extending asset life, preventing unexpected failure and operating on a condition based/predictive maintenance schedule.
- Auxiliary GSU transformers
- Transmission transformers
- On load tap changers
- Distribution transformers
