COMEM manuale uso RIS 2010 7:COMEM Uso RIS 6-12-2010 9:48 Pagina 9
DESCRIPTION AND FUNCTIONS
MEASURE
VALUE
CHECKING TEST
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 cock provided.
max 170 cm
3
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
set according to the transformer manufacturer’s instructions. When pressure
exeeds a pre set level the alarm circuit is triggered via a N/O or N/C switch.
100 ÷ 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 transformers. The nor-
mal operating value is set according to the transformer manufacturers instruc-
tions. At a pre set temperature on alarm circuit is triggered via a N/O or N/C
switch (T2).
“T1” THERMOSTAT SWITCH (STOP)
The feature measures the internal oil temperature of the transformers. The nor-
mal operating value is set according to the transformer manufacturers instruc-
tions. At a pre set temperature on stop circuit is triggered via a N/O or N/C
switch (T1).
THERMOMETER
The device measures the internal temperature of the transformer, which shall
be visualized outside the device through the protection window. The thermome-
ter is equipped with a zero re-setting pointer.
30 ÷ 120 °C
30 ÷ 120 °C
30 ÷ 160 °C
Open the rear cover using both
hands, do not lever at one side
only. The adjustement knob of
the alarm switch “T2” should be
set to zero.
The adjustement knob of the
stop switch “T1” should be set
to zero.
The protection window is to be
unscrewed so that the pointer
shall be set to zero
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PRESSURE
TEMPERATURE
OIL LEVEL
GASSING
PRESSURE SWITCH
closes/opens a circuit on
pressure ranging (from 100
up to 500 mbar)
THERMOMETER
visual representation of oil
temperature and max.
temperature reached
INDICATOR
visual indicator of slight
oil level variation
DETECTOR
closes/opens a circuit when
the max. gas volume is
reached (170 cm
3
)
“T2” THERMOSTAT SWITCH
(alarm)
closes/opens a circuit at a
predetermined
temperature level
(from 30 °C up to 120 °C)
DETECTOR
visual detector of significant
oil level variation through
closing/opening of an electric
circuit
“T1” THERMOSTAT SWITCH
(stop)
closes/opens a circuit at a
predetermined
temperature level
(from 30 °C up to 120 °C)
R.I.S. INTEGRATED SAFETY DETECTOR
