Transformer Monitors

From sensors to software, Dynamic Ratings helps utility and industrial customers improve transmission, distribution and substation systems reliability, leading to increased maintenance savings and reduced outages. We design, manufacture and integrate innovative sensors, monitors, and controls for data collection, analysis, and diagnostics. With the use of our asset management tools, our customers realize maximum benefit from on-line transformer and bushing monitoring.

We realize that a successful condition monitoring program must be built on a solid foundation that meets your needs.


E Series

The engineered to order E Series product provides a highly configurable hardware platform for utilities who need custom tailored solutions. Our application engineers will work with the utility or the transformer manufacturer to develop the optimal transformer monitoring solution to meet your needs. We will manufacture, program and test the solution following our ISO 9001 certified policies and processes. Our field service team provides field verification of the final installation.


C50 Series – Now with Bushing Monitoring!

The user configurable C50 series transformer monitor provides accurate control for cooling and voltage control, bushing monitoring, and tap wear as well as incorporating inputs from DGA devices.

Continuous monitoring of operational and performance data of your transformers allows for better utilization and longer life. Dashboard screens assist in configuring the system, as well as downloading and interpreting the information.

DGA Monitor Comparison Chart Photo

DGA Monitor

Dissolved Gas Analysis monitoring is a major component of a comprehensive transformer monitoring system. Dynamic Ratings supports communication to all major DGA monitors. We recognize that DGA monitors have different advantages and no one product would be optimal for all customers. That’s why we’ve created this DGA Monitor Comparison Chart to help you make the best decision for your transformer monitoring system.

B100 Electronic Temperature Monitor

B100 Series Electronic Temperature Monitor (ETM)

The reliable and cost effective B100 Electronic Temperature Monitor (ETM) provides exceptional measurement accuracy, asset control and secure communications for your transformer

The B100 features two RTD inputs and three CT inputs, as well as one additional input, 6 digital outputs, 2 analog outputs and a system alarm. Learn More…

Bushing Monitoring

DM Series

DM Series monitors provide advanced partial discharge and bushing monitoring for transformers. The DM Series product is scalable allowing customers to extend the coverage of monitoring to suit applications today and tomorrow. DNP and Modbus communication protocols supported.

RMM center view

Rotating Machine Monitor (RMM)

The RMM provides information as to the health of the stator winding insulation in medium and high voltage motors and generators and can be used on variable frequency drives (VFD). Communications ports include Ethernet, USB and RS-485 with a standard communication protocol using ModBus. DNP-3 is available upon request.


Switchgear and Cable Monitor (SCM)

The SCM Partial Discharge Monitoring System can have up to 60 channels, which makes it a cost effective solution for monitoring large line-ups of switchgear and cable systems. Continuous, on-line monitoring of PD activity, provides the means to detect pending insulation failures that are not present in traditional maintenance practices.

High Voltage

Circuit Breaker and SF6 Gas Monitoring

Dynamic Ratings offers On-Line Circuit Breaker Performance and SF6 Gas Density Monitors. These on-line circuit breaker monitors are ideally suited for implementing predictive maintenance, maintenance deferral, condition based maintenance and increase environmental protection from SF6 gas leaks. These intelligent electronic devices (IED) monitor the condition of the main contacts, mechanism and dielectric; and logs the following information during CB operation:

  • Trip Time (mS) (also known as Opening Time)
  • Arc duration (mS) (phase segregated)
  • Clearing Time (mS) (also known as Interrupting Time)
  • Cumulative I2 x T or I x T on the main contacts (phase segregated) from arcing
  • Restrike Occurrence (phase segregated)
  • Mechanism opening travel time (mS)
  • Mechanism closing travel time (mS)
  • Operation Counts
Battery Monitoring

Stationary Battery Monitoring

Monitoring of stationary battery systems has increased in importance due to the decline of craft specialists, reductions of maintenance personnel and the increasing number of unmanned facilities.

Additionally, NERC PRC-005 requires electric utilities to implement maintenance plans for protection systems associated with the Bulk Electric System.

These devices meet NERC PRC-005 monitoring requirements by monitoring, logging and alarming on the following information:

  • DC supply voltage
  • Battery float voltage
  • Battery float current
  • String continuity
  • Intercell connection integrity
  • Cell ohmic values relative to baseline values
  • Unintentional grounds
  • Electrolyte levels (optional)

Contact us for more information about our battery monitoring options.