COMEM eSDB-10C User manual

Self-dehydrating breathers
eSDB-10C/12C/14C
EN-IT-DE-ES-FR
INSTRUCTION MANUAL

2
CONTENT INDEX
Content index
Safety ...........................................................4
Product description ......................................4
Installation....................................................6
Electrical connection....................................6
Technical features........................................8
Applications..................................................9
Operation and maintenance .........................9
Appendix A - Options..................................10
Appendix B
Overvoltage protection replacement
instruction .................................................10
Appendix C - MODBUS communications....44
Appendix D - Drawings ...............................45
Indice dei contenuti
Sicurezza....................................................12
Descrizione del prodotto ............................12
Installazione ...............................................14
Connessioni elettriche................................14
Caratteristiche tecniche .............................16
Applicazioni................................................17
Funzionamento e manutenzione ................17
Appendice A - Opzioni ................................18
Appendice B
Istruzioni per la sostituzione della
protezione da sovratensione ......................18
Appendice C - Comunicazione MODBUS....44
Appendice D - Disegni ................................45
Inhalt
Sicherheit ...................................................20
Produktbeschreibung .................................20
Installation..................................................22
Elektrischer Anschluss ...............................22
Technische Merkmale ................................24
Anwendungen.............................................25
Betrieb und Wartung...................................25
Anhang A - Optionen...................................26
Anhang B
Anleitung zum Auswechseln des
Überspannungsschutzes ...........................26
Anhang C - MODBUS-Kommunikation........44
Anhang D - Zeichnungen ...........................45
Índice de contenidos
Seguridad ...................................................28
DescripciÓn del producto............................28
InstalaciÓn..................................................30
ConexiÓn eléctrica......................................30
Carateristicas técnicas...............................32
Aplicaciones...............................................33
Funcionamento y mantenimiento...............33
Apéndice A - Opciones ...............................34
Apéndice B
Instrucción de sustitución de la protección
contra sobretensiones ...............................34
Apéndice C - Comunicación MODBUS........44
Apéndice D - Dibujos .................................45

3
Index du contenu
Securitè ......................................................36
Description du produit................................36
Installation..................................................38
Raccordement électrique ...........................38
Caractéristiques techniques.......................40
Applications................................................41
Utilisation et entretien ................................41
Annexe A - Options.....................................42
Annexe B
Instructions de remplacement de la
protection contre les surtensions ..............42
Annexe C - Communications MODBUS.......44
Annexe D - Dessins ....................................45

4
Safety Product description
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.
Safety notes on the equipment operation
Electrical installation is subject to the relevant national
safety rules.
It is mandatory to connect the grounding cable.
This information indicates particular danger to life and health.
Disregarding such a warning can lead to serious or fatal injury.
It is important to observe the limit values indicated on
the nameplate and in the operating instruction before
commissioning the device.
All relevant fire protection regulation must be strictly observed.
This information indicates particular danger to equipment or
other property of the user. Serious or fatal injury cannot be
excluded.
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.
During the regeneration phase, the surface temperature
increases. Touching the surface is dangerous.
This notes give important or specific information concerning the
equipment or as to work with the equipment.
WARNING
WARNING
WARNING
CAUTION
CAUTION
CAUTION
NOTE
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.
During the normal operation the oil conservator intakes air
that passes through the metallic filter.
The metallic filter stops dust, sand and other particles
from the contaminating air.
The air then passes through the salt tank 1 (Fig.14-15/1).
The tank is filled with silica gel that absorbs the moisture.
The dehydrated air goes through piping to the oil
conservator.
After a pre-determinate time (settable) a solenoid
valve blocks the passage of air through tank 1 and
deviates through the “plenum chamber” 2 (Fig.14-15/2)
(for eSDB10C it deviates the air through the main
self-dehydrating breather eSDB15, eSDB30, eSDB40 or
eSDB14C). 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.
After the salt regeneration in tank 1, the solenoid valve is
de-energized and the air flow 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 eSDB10C).
No maintenance is required for replacement and
regeneration of the desiccant.
SELF-DEHYDRATING BREATHERS eSDB-10C/12C/14C
D
C
B
A
654
3
21 7 8
E
F
A
B
C
D
E
F
1 2 3 4 5 6 7 8
This document is issued by means of a computerized system. The digitally stored original is electronically approved. The approved document has a date entered in the `Approved'-field. A manual signature is not required.
DRAWING SHEET ISO 5457: 1999-A3T
We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority is strictly fobidden.
1/13
A
Development
NE-359
SHEETITERREVSTATUSDOCUMENT ID
ITABB-9AAE306693 -
RESPONSIBLE DEPARTMENT
CONNECTION ESDB10C
COMEM
TITLE / SUPPLEMENTARY TITLECOMPANY
Component Drawing-
PROJECT IDWORK ORDER IDBASED ON DOC IDDOCUMENT KINDAPPROVED ON
--Diego Boro
APPROVED BYREVIEWED BYCREATED BY
© COPYRIGHT ALL RIGHTS RESERVED
ESDB14C
ESDB10C
C
M
Y
CM
MY
CY
CMY
K
ai16208273657_ne-359.pdf 1 12/05/2021 15:49:25
Figure 1

5
The time between 2 regenerations cycles could be set in
accordance with the table in appendix A (as default it is fixed at 20
days for eSDB-14C / 30 days for eSDB-10C/12C)
NOTE
Status indicators
Three LEDs which indicate the status of the device are
installed outside the terminal box and observable by the
external side (Fig.2/D).
Green LED (pulsating): Power voltage ON
Yellow LED (pulsating): Regenerating tank ON
Red LED (pulsating): Alarm
The display inside the box (Fig.2/A) shows information
about the time between 2 regeneration process.
To set this time is necessary to push the button (Fig. 2/B)
for 5 seconds until the number start to blink, after that,
pushing the button is possible to increase the number of
day (1 days steps, minimum value 1 days and maximum
value 50 days)
After 5 second where the button is not pushed, the
condition pass to idle.
Figure 2
Self-monitoring function
The self-dehydrating air breather has a self-monitoring
function.
Outputs
STANDARD CONFIGURATION SPECIAL CONFIGURATION
Malfunction What is detected Malfunction What is detected
POWER FAILURE - Failure of the power supply
- Failure of the electronic circuit
POWER FAILURE - Failure of the power supply
- Failure of the electronic circuit
- Failure of the heating element
- Failure of Solenoid Valve
SYSTEM FAILURE - Failure of the heating element
- Failure of Solenoid Valve
STANDARD CONFIGURATION SPECIAL CONFIGURATION
STANDARD RELAY 1 x change over contact: POWER FAILURE
(terminals 22-24-21)
1 x change over contact: SYSTEM FAILURE
(terminals 12-14-11)
1 x NC contact: POWER FAILURE
(terminals 22-21)
1 x change over contact: HEATER ON
(terminals 12-14-11)
OPTIONS ANALOG OUTPUT 4-20 mA (terminals 41-44)
(Minimum / Maximum resistance: 100 / 470 Ohm)
4-20 mA (terminals 41-44)
(Minimum / Maximum resistance: 100 / 470 Ohm)
DIGITAL OUTPUT RS-485 Digital Signal (terminals 3-4) Digital Signal (terminals 3-4)
Table 1
Table 2
When the device has got a failure, this is detected by
contacts that can be set in accordance to customer
demand on the following configuration:
AD
C
B

6
Installation
The operating and installation requirements described in this
manual must be strictly followed. If not, the device can be
damaged or a malfunction may occur.
The unit must be mounted level and upright.
The unit and piping must be installed so the oil is not able to
enter the breather.
Do not install in an enclosed cabinet; proper ventilation is
required.
Electrical connections should only be performed by qualied
and skilled personnel trained in the applicable health and safety
regulations of the relevant country.
CAUTION
CAUTION
Figure 3
Figure 5
Put the plane gasket between the two anges.
CAUTION
eSDB10C
First step: Remove the tape/plastic cap from the entry/
exit air zones. Fix the upper ange (Fig.3/A) on the ange
of the pipe from the conservator (Fig.3/B) with four M12
screws (Fig.3/C).
eSDB12C/14C
First step: Remove the tape/plastic cap from the entry/
exit air zones. Fix the upper ange (Fig.7/A) on the ange
of the pipe from the conservator (Fig.7/B) with four M12
screws (Fig.7/C).
Second step: unscrew plug on the eSDB-10. Depending
on the position of the main air breather (eSDB-14C/15
or eSDB-30) unscrew the right plug (Fig.4/A) or left plug
(Fig.4/B).
Unscrew the plug on the main air breather (Fig.5/A).
Connect a pipe between the two plugs (Fig.6). The plug
thread is M16x1.5.
Figure 6
Figure 7
Figure 4
D
C
B
A
654
3
21 7 8
E
F
A
B
C
D
E
F
1 2 3 4 5 6 7 8
This document is issued by means of a computerized system. The digitally stored original is electronically approved. The approved document has a date entered in the `Approved'-field. A manual signature is not required.
DRAWING SHEET ISO 5457: 1999-A3T
We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority is strictly fobidden.
1/13
A
Development
NE-359
SHEETITERREVSTATUSDOCUMENT ID
ITABB-9AAE306693 -
RESPONSIBLE DEPARTMENT
CONNECTION ESDB10C
COMEM
TITLE / SUPPLEMENTARY TITLECOMPANY
Component Drawing-
PROJECT IDWORK ORDER IDBASED ON DOC IDDOCUMENT KINDAPPROVED ON
--Diego Boro
APPROVED BYREVIEWED BYCREATED BY
© COPYRIGHT ALL RIGHTS RESERVED
ESDB14C
ESDB10C
C
M
Y
CM
MY
CY
CMY
K
ai16208273657_ne-359.pdf 1 12/05/2021 15:49:25
D
C
B
A
654
3
21 7 8
E
F
A
B
C
D
E
F
1 2 3 4 5 6 7 8
This document is issued by means of a computerized system. The digitally stored original is electronically approved. The approved document has a date entered in the `Approved'-field. A manual signature is not required.
DRAWING SHEET ISO 5457: 1999-A3T
We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority is strictly fobidden.
1/12
A
Development
NE-1188
SHEETITERREVSTATUSDOCUMENT ID
ITABB-9AAE306693 -
RESPONSIBLE DEPARTMENT
COMEM ESDB10
COMEM
TITLE / SUPPLEMENTARY TITLECOMPANY
Component Drawing-
PROJECT IDWORK ORDER IDBASED ON DOC IDDOCUMENT KINDAPPROVED ON
--Diego Boro
APPROVED BYREVIEWED BYCREATED BY
© COPYRIGHT ALL RIGHTS RESERVED
A B
Between the plug and the housing must be positioned an OR
gasket to avoid any leakage.
The system (pipe and plug) must be assembled to guarantee
the sealing.
WARNING
Electrical connection
Dangerous electrical voltages!
It is imperative to deactivate the power supply during wiring of
the device.
WARNING
SELF-DEHYDRATING BREATHERS eSDB-10C/12C/14C
D
C
B
A
654
3
21 7 8
E
F
A
B
C
D
E
F
1 2 3 4 5 6 7 8
This document is issued by means of a computerized system. The digitally stored original is electronically approved. The approved document has a date entered in the `Approved'-field. A manual signature is not required.
DRAWING SHEET ISO 5457: 1999-A3T
We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority is strictly fobidden.
1/12
A
Development
NE-1188
SHEETITERREVSTATUSDOCUMENT ID
ITABB-9AAE306693 -
RESPONSIBLE DEPARTMENT
COMEM ESDB10
COMEM
TITLE / SUPPLEMENTARY TITLECOMPANY
Component Drawing-
PROJECT IDWORK ORDER IDBASED ON DOC IDDOCUMENT KINDAPPROVED ON
--Diego Boro
APPROVED BYREVIEWED BYCREATED BY
© COPYRIGHT ALL RIGHTS RESERVED
B
A
C
D
C
B
A
654
3
21 7 8
E
F
A
B
C
D
E
F
1 2 3 4 5 6 7 8
This document is issued by means of a computerized system. The digitally stored original is electronically approved. The approved document has a date entered in the `Approved'-field. A manual signature is not required.
DRAWING SHEET ISO 5457: 1999-A3T
We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority is strictly fobidden.
1/12
A
Development
NE-1188
SHEETITERREVSTATUSDOCUMENT ID
ITABB-9AAE306693 -
RESPONSIBLE DEPARTMENT
COMEM ESDB10
COMEM
TITLE / SUPPLEMENTARY TITLECOMPANY
Component Drawing-
PROJECT IDWORK ORDER IDBASED ON DOC IDDOCUMENT KINDAPPROVED ON
--Diego Boro
APPROVED BYREVIEWED BYCREATED BY
© COPYRIGHT ALL RIGHTS RESERVED
B
A
C
D
C
B
A
654
3
21 7 8
E
F
A
B
C
D
E
F
1 2 3 4 5 6 7 8
This document is issued by means of a computerized system. The digitally stored original is electronically approved. The approved document has a date entered in the `Approved'-field. A manual signature is not required.
DRAWING SHEET ISO 5457: 1999-A3T
We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority is strictly fobidden.
1/12
A
Development
NE-1188
SHEETITERREVSTATUSDOCUMENT ID
ITABB-9AAE306693 -
RESPONSIBLE DEPARTMENT
COMEM ESDB10
COMEM
TITLE / SUPPLEMENTARY TITLECOMPANY
Component Drawing-
PROJECT IDWORK ORDER IDBASED ON DOC IDDOCUMENT KINDAPPROVED ON
--Diego Boro
APPROVED BYREVIEWED BYCREATED BY
© COPYRIGHT ALL RIGHTS RESERVED
A

7
The alarm relays (contact failure) will not trip the transformer.
Close the free cable gland with a plug or gasket if both cable
glands are not used.
During the assembly of terminal box, be careful to avoid any
damage of the OR gasket. If this occurs it must be substituted.
CAUTION
CAUTION
CAUTION
A
Figure 8
Figure 9
Figure 10
To wire the dehydrating breather, open the terminal box
(Fig.14-15/C). An external ground screw is positioned on
the upper flange (Fig. 14-15/G).
Power voltage
First, connect protective ground externally (Fig.14-15/G).
Connect the power voltage (as written on the label on the
terminal box cover) to terminals 31- 32.
Remove the fast plug-in pulling the wire (Fig.9/A), connect
the supply voltage wires in accordance to the label
electrical scheme (Fig.8) and connect again the plug-in. Analog Output (optional)
Terminals for analog output 4-20 mA: 41-44.
Digital Output (optional)
Digital output RS485: terminals 3-4.
Relay
Standard Configuration
There are 2 contact failures:
• 1 x change over contact: POWER FAILURE
(terminal 22-24-21)
- NO contact: terminals 24-21
- NC contact: terminals 21-22
After supply voltage:
- NC contact: terminals 24-21
- NO contact: terminals 21-22
• 1 x change over contact: SYSTEM FAILURE
(terminal 12-14-11)
- NO contact: terminals 14-11
- NC contact: terminals 11-12
Special Configuration
There is one-contact failures:
• 1 x NC contact: POWER FAILURE (terminal 22-21)
- NC contact: terminals 21-22
After supply voltage:
- NO contact: terminals 21-22
• 1 x change over contact: HEATER ON
(terminal 12-14-11)
- NO contact: terminals 14-11
- NC contact: terminals 11-12

8
Technical features
Table 3
Standard connection ange DN40 ange in accordance with standard UNI EN 1092-1:2003
Material All the external part are resistant to transformer oils, salt fog and UV rays **
Color RAL 7032 *
Ambient temperature -40 to 80°C / -40 to 176°F
Degree of protection IP45 in accordance with EN60529 (except terminal box which is IP66)
Vibration damping Optional anti-vibration supports can be anchored to the transformer (15/D)
Functional test Available
eSDB10C eSDB12C eSDB14C
Weight 12Kg/26.5lb 18Kg/39.6lb 18Kg/39.6lb
Salt weight (main tank) 2.0Kg/4.4lb 2.0Kg/4.4lb 2.0Kg/4.4lb
Maximum oil volume 45 m3,
40 tons oil,
12,000 gals
Power Panel
Degree of protection of terminal board IP 65 according to EN 60259
Ventilation valve To prevent the formation of condensation
Cable gland Two M25x1.5
Wires 4 mm2, AWG 24-10 exible cables with or without terminals (screws are used to fasten the
cables to the terminal board on the terminal box). For digital/analog output advised 4x1mm2
(4x0.00155”2)/ 2x1mm2(2x0.0155”2) shielded twisted pair cable.
Power Supply
Supply voltage 115/230 VAC/DC ±10% 50/60 Hz
Current consumption Max 100 mA
Current consumption
(during regeneration process)
3.0 A
Heating element insulation 2.0 kV 50/60 Hz, 1 min, power terminals – ground
Braking capacity
(relays on the electronic card)
Voltage Current Breaking capacity
230V AC 2A 500 VA cosø >0,5
30/110/220V DC 10/03/0,12 A L/R<40 ms
Analog output (optional) (See Table 2)
Signal output 4-20 mA proportional to tank 1 temperature
Max distance for analogical output Max 30 m / 98 ft Please contact COMEM for other requests
Digital output (optional) (See Table 2)
Digital output Serial RS485 (for more information contact COMEM ([email protected]))
Distance for digital output Max 30 m / 98 ft Please contact COMEM for other requests
Signal contacts (See Table 2)
Dielectric strength of contacts
(short duration power frequency
withstand voltage 1 min)
Between contacts and ground: 2kV
Between contacts in open position: 1kV
* only for C4 corrosion class
** For critical environmental conditions please contact COMEM
SELF-DEHYDRATING BREATHERS eSDB-10C/12C/14C

9
Applications
eSDB type Power
consumption*
Silicagel**
Tap Changers eSDB10C/10 350W 2 kg
eSDB12C 350W 2 kg
Network transformer
<40MVA
eSDB14C 350W 2 kg
Network transformer
>40MVA <200MVA
eSDB15 600 W 2,5 Kg
Network transformer
>200MVA
eSDB30 600 W 3 kg
Shunt reactors
>40Mvar <200Mvar
eSDB15 600W 2,5 Kg
Shunt reactors
>200Mvar
eSDB30 600 W 3 kg
HVDC transformers eSDB40 600 W 6 kg
Furnace transformers eSDB40 600 W 6 kg
GSU transformers eSDB40 1200W 6 kg
* during the heating procedure
** main tank
Table 4
For each application, in case of the quantity of oil exceed the max
value for each breather, we advise to put 2 eSDB in parallel.
It is not possible to do the functional test if the regeneration
process is activated.
COMEM advices to disconnect eSDB during the electrical
transformer routine test.
If the fitting is not powered for more than 3 days, the clock will
re-start at the next powering from the date and hour of the end of
the last regeneration cycle.
NOTE
NOTE
NOTE
NOTE
Operation and
maintenance
Operation
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.
Maintenance
During regular maintenance on the transformer, we recom-
mend performing the following checks on the dehydrating
breather:
• Check the exterior condition of the device (especially the
lter air)
- Check the LED indication
- Check the failure contact
• It is possible, to perform a functional test pushing the
external button (Fig.2/C).
Movement, transport and storage
The eSDB-10C/12C/14C can be handled without any tools.
Handle the device with care.
When you remove the device from the transformer (for
example during shipping operation), please follow the
procedure:
• Switch off the supply voltage
• Remove the supply wire from the terminal box
The eSDB must be stored in the original packing and in a dry
place with temperature in the range -10÷40°C (14÷104 °F).
Upon receiving the device, please check:
• The outer surface of the packaging to ensure that it is
intact
• That there are no breakages.
If damages are found, please contact COMEM and pro-
vide the information from the shipping list and the serial
number of the Self-dehydrating breather.
The total regeneration phase takes about 20 hours.
During the transformer transport, we advise to disassemble the
air breather and to place it inside the original box.
Do not paint the device. In this case any warranty concern-ing
the corrosion will expire.
Only mild soap and water should be used to clean the elec-trical
box cover. Solvents must not be used for any reason as they will
degrade the performance of the paint. Use of sol-vents on the
unit will immediately void the warranty.
CAUTION
CAUTION

10
Appendix A - Options
Appendix B - Overvoltage
protection replacement
instruction
Flange DIN 45962 connection
Introduction
The scope of this instruction is to provide the instruction
for an easy and safe replacement or retrotting of the so
called “overvoltage protection” for eSDB-C.
Safety instruction
Make sure that the personnel installing/replacing the
“overvoltage protection” for eSDB-C:
• Are technically qualied and competent
• Fully comply with these assembling instructions
Improper operations or misuse could cause danger to:
• life and limb
• to the equipment and other assets of the operator
• to the proper function of the equipment.
Overvoltage protection replacement
Case
The overvoltage protection operated to protect the control
PCB so it has to be substituted by a new one.
Components
The kit to complete the replacement is made by the
following component (Table 5):
The minimum thickness flange has to be 15 mm.
CAUTION
The rotation range shall be completely covered adjusting
the position of eSDB and xing the locknut.
Figure 11
Figure 12
Graph 1
Notes:
As default, the pre-set time between two regeneration processes is 30 days for
eSDB10C/12C and 20 days for eSDB14C. For any further information or specic
cases, please contact us ([email protected]).
Set time between two regeneration processes
There is the possibility to set the time between two rege-
neration processes:
1. Pushing for 5 seconds the button (Fig.2/C) till the
number on the display (Fig.2/A) starts to blink.
2. Pushing again the button until the selected time is
reached (max selected time is 50 days).
The indicative time is showed in the graph 1 considering:
• An average value (yearly) of the ambient humidity (%).
• An average value of the oil density.
• A temperature difference of 40 °C .
• A specic oil quantity (in the example 20 tons).
• An output relative humidity trigger (%).
Description Pictures
BFuse:
It is provided by COMEM as spare part.
Each eSDB with overvoltage protection has
the rst fuse already mounted on the PCB
while an additional spare part is included in
the supply and placed within the electrical
box.
Table 5
SELF-DEHYDRATING BREATHERS eSDB-10C/12C/14C
120°
120°
150 (5.9")
15 (0.59")
M12
3x60 (2.36")
124 (4.88")