As Hydrogen (H₂) is involved in nearly every fault of the isolation system of power transformers and Carbon Monoxide (CO) / Carbon Dioxide (CO₂) is a sign of degradation of the cellulosic / paper isolation the presence and increase of Acetylene (C₂H₂), Methane (CH₄), Ethylene (C₂H₄) and Ethane (C₂H₆) further classifies the nature of a fault as overheating, partial discharge or high energy arcing.

The device can serve as a compact transformer monitoring system by the integration / connection of other sensors present on a transformer via its analogue inputs:

• 4 Analogue inputs 0/4-20mADC
• 6 Analogue inputs 0/4-20mADC +20% / 0-80 VAC +20%

configurable by jumpers It is further equipped with digital outputs for the transmission of
alarms or the execution of control functions (e.g. control of a cooling system of a transformer):

• 8 digital relay outputs
• 5 digital optocoupler outputs

For more information please refer to the HYDROCAL 1008-3/-2/-1 data sheet. If you have any further questions or would like a quotation please contact our sales team.