Power quality monitoring

Power quality monitor

Retrofittable remote monitoring of transformer and substation to increase renewable power distribution, prevent outages and increase asset lifetime.

  • Crest Power Quality
  • Power quality in the field

Next steps

How to connect devices to the Withthegrid asset monitoring application →

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Product description

Always the latest status of grid infrastructure and assets

Transformer and substation monitoring 

The Lower voltage and Medium-voltage grid is rapidly changing due to the rise of solar energy, batteries, heat pumps, and electric vehicles. This requires real-time insights that existing SCADA systems cannot easily provide.

Power quality insights 

Safe and high-quality electricity means that power quality specifications need to be met. Spikes or changes in power quality can severely damage equipment or prevent customers from using or feeding electricity back into the system.

Anomaly detection

Identifying faults in the low voltage grid and transformers take time. With real-time monitoring, this process can be sped up significantly. In addition to static thresholds, anomaly detection algorithms can provide additional insights and preliminary warnings with more precise fault locations.

Inspection reduction 

The lack of technical personnel is affecting the speed of the energy transition. With real-time monitoring, physical inspection cycles can be reduced freeing up valuable time for other activities. 

The digital twin helps us support prosumers in delivering more renewable energy to the grid whilst at the same time increasing the efficiency of our own operations.”

Hans Leenders, Asset manager Joulz

Software functionality

Deep Insights and control

Monitor an extensive range of metrics giving detailed insights into the load and performance of the connected assets. The modularity of the system allows for unlimited expansion to monitor any substation component.

Easily installed in the field

The device can be easily installed by mechanics and depending on regulation the power does not need to be switched off. The ability to work with current transformers or ragowski coils means that any situation is suitable to monitor.

Full flexibility to meet all situations

The base station can be extended with extension modules. Directly powered and connected via standard Modbus UTP cable. Up to 10 extension modules can be connected to 1 base unit.

FunctionBase modulePQ expansion module
AC-Voltage Harmonics
THD Voltage
AC-Current harmonics
THD Current
Phase angle
Voltage phase angle
Power factor
Active power
Reactive power
Apparent power

Device specifications

Product dimensions

255mm x 120mm x 110mm


Voltage clamps

Battery backup


Current monitoring

Curren clamps / Ragowski clois

Voltage monitoring

Voltage clamps



Expansion module

PQ expansion

Expansion module

IO temperature monitor PT100

Expansion module

IO expansion




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