HYDROCAL 1008 is a permanently-installed multi-gas-in-oil analysis system with transformer monitoring functions. It allows for the individual measurement of moisture and the key gases hydrogen (H2), carbon monoxide (CO), carbon dioxide (CO2), methane (CH4), acetylene (C2H2), ethylene (C2H4) and ethane (C2H6) dissolved in transformer oil.
As hydrogen (H2) is involved in nearly every fault of the isolation system of power transformers and carbon monoxide (CO) is a sign of an involvement of the cellulosic/ paper isolation the presence and increase of acetylene (C2H2) and ethylene (C2H4) 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 it’s analog inputs:
• 4 analog inputs 0/4-20 mADC
• 6 analog inputs 0/4-20mADC / 0-100VAC 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 opto-coupler outputs
• Hydrogen (H2), carbon monoxide (CO), carbon dioxide (CO2), methane (CH4), acetylene (C2H2), ethylene (C2H4) and ethane (C2H6) , measurement.
• Moisture-in-oil measurement
• Communication interfaces ETHERNET 10/100 Mbit/s (both copper-wired/fibre-optical) and RS 485 to support proprietary communication protocols and to be open/ prepared for substation communication protocols IEC 61850, MODBUS, DNP 3 etc.
• Optional on-board GSM and analog modems for remote communication
• 6 analog AC voltage inputs for the connection of capacitive HV bushing sensors for HV bushing monitoring application.
