3
TRANSFORMER COMPONENTS
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2. Comem RIS2
2.1 Introduction
Different functions efficiently combined
in a single compact design
Integrated safety detector Comem RIS2 was
conceived from the need to integrate the functions
performed by a number of transformer accessories
Integrated safety detector according to EN 50216-3
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.
2.2
Description and functions
Description and functions
Measure
Checking test value
Oil level (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.
Max 150 cm3
Locate the magnet close to the
float (between MAX and MIN).
Drawn it downwards until it
reaches “MIN”. To reset the
float to its correct position
draw the magnet upwards and
detach.
Pressure (Pressure switch)
This feature measures the internal pressure of transformer. The normal level is
to be set by the user according to the transformer manufacturer’s instructions.
When pressure exceeds a pre set level the alarm circuit is triggered by a change
over contact.
100 mbar to
500 mbar
With the internal pressure at
least 100 mbar set the
adjusting knob of the pressure
switch to minimum.
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 pre set temperature the alarm circuit is
triggered by a change over contact (T2).
30 °C to 120 °C
Open the rear cover using both
hands, do not lever at one side
only. The adjustment knob of
the alarm switch “T2” should
be set to the minimum value.
“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 pre set temperature the stop circuit is
triggered by a change over contact (T1).
30 °C to 120 °C
The adjustment knob of the
stop switch “T1” should be set
to zero. The adjustment knob
of the stop switch “T1” should
be set to the minimum value.
Thermometer
The device measures the internal temperature of the transformer, which shall be
visualized outside the device through the protection window.
The thermometer is equipped with a drag pointer.
30 °C to 160 °C
The protection window is to be
unscrewed so that the pointer
shall be set to the minimum
values.
