Safety; Product Description - COMEM eSDB10 Instruction Manual

Safety

Safety instructions
Make sure that any person installing, taking into operation
and operating the self-dehydrating breather:
• is technically qualified and competent
• fully complies with these assembling instructions
Improper operations or misuse could cause danger to:
• life and limb
• the equipment and other assets of the operator
• the equipment proper function
Safety instructions in this manual are shown in three
different forms to emphasize important information.
WARNING
This information indicates particular danger to life and health.
Disregarding such a warning can lead to serious or fatal injury.
CAUTION
This information indicates particular danger to equipment or
other property of the user. Serious or fatal injury cannot be
excluded.
This notes give important or specific information concerning the
equipment or as to work with the equipment.
Safety notes on the equipment operation
Electrical installation is subject to the relevant national
safety rules.
It is mandatory to connect the grounding cable.
CAUTION
During the regeneration phase, the surface temperature
increases. Touching the surface is dangerous.
CAUTION
Installation, electrical connection and fitting the device may only
be performed by qualified personnel and only in accordance
with this instruction manual. It is the responsibility of the user
to ensure that the device is used for specified application only.
For safety reasons, please avoid any unauthorized and improper
usage.
WARNING
All relevant fire protection regulation must be strictly observed.
4
NOTE
SELF-DEHYDRATING BREATHERS eSDB 10/15/30

Product description

The dehydrating breather is used for oil-insulated tran-
sformer and on-load tap-changer to dry the air which is
suctioned in by the oil conservator during the thermal
contraction of the oil mass.
It is important to observe the limit values indicated on
the nameplate and in the operating instruction before
commissioning the device.
1 2 3
M16x1.5 PLUG
A
B
C
D
E Figure 1
During the normal operation the oil conservator intakes
air that passes through the metallic filter (Fig.5-11/A). The
F
metallic filter stops dust, sand and other particles from
the contaminating air. The air then passes through the
1 2 3
tank 1 (Fig.16-17-18/1). The salt tank is filled with silica
gel that absorbs the moisture.
When the silica gel absorbs the moisture, the weight of the
salt increases and is constantly monitored by a weighing
cell. When the weight increases and exceeds the pre-set
value a solenoid valve blocks the passage of air through
salt tank 1 and deviates through the "plenum chamber" 2
(Fig. 16-17-18/2)(for eSDB10 it deviates the air through
the main self-dehydrating breather eSDB-15, eSDB-30). At
the same time, a heating system inside tank 1 is activated.
The water vapor leaving the silica gel is expelled outward
by a fan that also dissipates the heat.
Inside the tank, a probe controls the temperature of the
heating element.
After the silica gel regeneration in tank 1, the solenoid
valve is de-energized and the airflow through tank 2 is
inhibited. The salt in this tank (2) is also dehydrated,
regeneration of the salt in tank 2 follows automatically
(not for eSDB-10).
No maintenance is required for replacement and
regeneration of the desiccant.
WARNING
4 5 6
M16x1.5 PLUG
LAST REVISION AGGIORNATO DISEGNO - Drawing updated
DESCRIPTION
TOLLERANZE GENERALI SECONDO - GENERAL TOLERANCES ACCORDING TO ISO 2768
MATERIAL
- - -
PROCESS
- -
CREATED BY REVIEWED BY
Diego Boro -
APPROVED ON DOCUMENT KIND
- Component Drawing
COMPANY TITLE / SUPPLEMENTARY TITLE
CONNECTION ESDB10
COMEM
-
RESPONSIBLE DEPARTMENT
ITABB-9AAE306693
DOCUMENT ID
NE-286
© COPYRIGHT ALL RIGHTS RESERVED
4 5 6
7 8
A
B
C
D
REPLACED
REVISION E
m SCALE NO
WEIGHT - kg
-
PART NUMBER
-
APPROVED BY
-
BASED ON DOC ID WORK ORDER ID PROJECT ID
F
STATUS REV ITER SHEET
A
Development 3 1/1
7 8
DRAWING SHEET ISO 5457: 1999-A3T