2. Product overview
2.1 Overview of OPT100 Optimus DGA monitor
Optimus DGA Monitor OPT100 is a device for monitoring the internal condition of an electrical
transformer using dissolved gas analysis (DGA), also known as fault gas analysis. The device is
intended to be installed next to the transformer, and connected to it by two oil lines. The
device is suitable for outdoor or indoor use. The device draws oil from a transformer, measures
the concentrations of hydrogen, moisture, and several hydrocarbons in the oil, and returns the
oil back to the transformer.
Measurement results can be transferred via communication interfaces to the substation's
SCADA (Supervisory Control And Data Acquisition) system. The data is also available for
viewing by human operators through the browser-based user interface.
The OPT100 Optimus DGA Monitor consists of two separate units; the DGA monitor and the
power supply unit. The DGA monitor contains the entire oil monitoring system and all control
systems and is powered by 24 V DC. The power supply unit houses all mains parts and delivers
24 V DC operating voltage to the DGA monitor. Power supply unit is available for AC supply
voltage and DC supply voltage.
More information
‣
OPT100 technical specification (page 94)
2.2
Basic features and options
• Measurement of seven fault gases, moisture in oil, and total gas pressure
• Several calculated parameters and gas ratios available
• Ethernet and RS-485 interfaces for SCADA integration
• Modbus protocol (RTU and TCP)
• Protocol test mode for verifying SCADA integration
• Three configurable relay outputs
• Gas level alerts for measured values and rate of change (ROC)
• IP66 rated cabinet
• Optional software features:
• DGA diagnostics using Duval triangles
• DNP3 (Distributed Network Protocol) over Ethernet or RS-485
• IEC 61850 protocol over Ethernet
• Installation options:
• Ground mounting set
• Wall mounting set
• Weather shield
OPT100 User Guide M211858EN-U
12
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