United States
  • Booth: 11859

Established in 1945, Qualitrol provides condition based monitoring solutions across the globe for high value electrical assets. We are the largest and most trusted global leader for grid monitoring. At Qualitrol, we define condition based monitoring.

Brands: grid monitoring, condition based maintenance, grid software, substation monitoring, intelligent transformer monitors, small transformer monitoring, universal gauges


  • Qualitrol STB000 Smart Transformer Breather
    The Qualitrol STB series smart transformer breather removes moisture from entering your transformer or LTC conservators. The breather is automated to regenerate at a user selectable time interval – Parts Per Million or Relative Humidity....

  • The STB000 offers utilities and transformer asset managers the ability to reduce maintenance costs, protect against premature aging and keep their assets dry with the first universal, maintenance-free breather. A host of new features and enhancements include data logging and a test button option that allows for easy diagnostic check of breather functions in the field. The new STB000 software makes setup, customization and installation quick and easy. Alarm and Status relays can be set for failsafe or non-failsafe operation. Configurations can be saved offline for uploading to units later, making fleet-wide installations simple. Password controlled software sections allows for read or read/write access depending on the level of access needed.

    Easy retrofit now possible with a universal model that works for both LTC and Main Tank applications. Available in either 1kg or 2kg designs, the STB000 monitors the breathing pattern of the tank and switches between main tank and LTC operation automatically. Multiple mounting options are available for fitting to a new or retrofit installation. Internal cabling allows for easier installation and eliminates unintentional damage to cabling in the field. A quality unit from a trusted brand, each of our smart breathers come with a 5-year warranty. Desiccant regeneration is configurable by the end user based on % Relative Humidity (RH), Parts Per Million (PPM) or time-frequency (days).

    The STB000's communication options provide insight into any application. Multiple communication options including 4-20 mA, RS-485 MODBUS and alarm relays transmit the status of the breather, moisture levels and errors such as power failure (failsafe). Datalogging options track breather status along with Relative Humidity levels and internal temperatures, giving new data for long term planning. A local USB port inside the control box provides for local reading and configuration of the STB000. The information and trends gained from the system can be used as part of a Condition Based Maintenance program to optimize maintenance expenditure.

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