Comem RIS Integrated Safety Detector
Comem RIS Integrated Safety Detector
The Comem RIS is an integrated and compact measurement device for hermetically sealed oil-insulated transformers.
It integrates the functions performed by different transformer accessories into a single, compact and reliable device that keeps constant control of the transformer’s pressure, temperature, oil level and gassing.
Key transformer measurement functions in one compact design
The R.I.S. (Integrated Safety Detector) was conceived from the need to integrate the functions performed by a number of transformer accessories in a single, compact and reliable instrument, which was capable of replacing their applications, as well as guaranteeing numerous advantages ranging from an economic to functional-aesthetic viewpoint.
Made for harsh conditions
It is composed by a rugged plastic body, watertight and resistant to extreme climates, with houses a series of instruments and keeps constant control of the following operating conditions of the transformer:
PRESSURE
Pressure switch closes/opens a circuit on pressure ranging (from 100 up to 500 mbar).
OIL LEVEL
Visual indicator for monitoring oil level variation.
Visual detector of significant oil level variation through closing/opening of an electric circuit
GASSING
Detector closes/opens a circuit when the max. gas volume is reached (max. 170 cm3).
TEMPERATURE
Thermometer with visual indication of oil temperature and maximum temperature reached.
“T2” Thermostat switch (alarm) closes/opens a circuit at a predetermined temperature level (from 30 °C up to 120 °C).
“T1” Thermostat switch (stop) closes/opens a circuit at a predetermined temperature level (from 30 °C up to 120 °C).
Comem RIS Brochure
Integrated Safety Detector
Features of the RIS Integrated safety Detector
Gas (Float)
The device indicates any gas evolvement or oil level variation:
Slight oil level variation or any insignificant gas evolvement is denoted by the float position between “MIN” & “MAX” on the display.
At major oil variation level or gas evolvement the float stops at “MIN” and opens/closes the alarm circuit.
Any accumulated gas can be drawn off by the valve provided.
Pressure (Pressure switch)
This feature measures the internal pressure of the transformer.
The normal level is to be set by the user according to the transformer manufacturer’s instructions. When pressure exceeds a preset level the alarm circuit is triggered by a N/O or N/C switch.
Temperature
“T2” Thermostat switch (Alarm)
The feature measures the internal oil temperature of the transformer. The normal operating value is to be set by the user according to the transformer manufacturers instructions. At a preset temperature the alarm circuit is triggered by a N/O or N/C switch (T2).
“T1” Thermostat switch (Stop)
The feature measures the internal oil temperature of the transformer. The normal operating value is to be set by the user according to the transformer manufacturers instructions. At a preset temperature the stop circuit is triggered by a N/O or N/C switch (T1).
Thermometer
The device measures the internal temperature of the transformer, which shall be visualised outside the device through the protection window. The thermometer is equipped with a zero re-setting pointer.
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