ABB Comem RIS2 User manual

—
TRANSFORMER COMPONENTS
Integrated safety device Comem RIS2
Instruction manual
Content
1. Safety 2
1.1 Safety instructions 2
1.2 Specified applications 2
1.3 Safety notes on the equipment operation 2
2. Comem RIS2 3
2.1 Introduction 3
2.2 Description and functions 3
2.3 Drawings 4
2.4 General feature 4
2.5 Current 5
2.6 Wiring diagram 5
3. Installation 6
3.1 Mounting instruction 6
3.2 Installations and operating instructions 8
3.3 Instructions for topping up the level on
Comem RIS2 8
3.4 Drawings 10
4. Test 11

2NTEGRATED SAFETY DEVICE | INSTRUCTION MANUAL
ALL RELEVANT FIRE PROTECTION REGULATION
MUST BE STRICTLY OBSERVED.
WARNING
—
1. Safety
1.1 Safety instructions
Make sure that any persons installing, taking into
operation and operating the safety detector:
• Are technically qualified 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 equipment proper function
Opening of the device will void your warranty.
Safety instructions in this manual are shown in three
different forms to emphasize important information.
1.2 Specified applications
The RIS2 integrated safety detector 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)
THIS INFORMATION INDICATES PARTICULAR
DANGER TO LIFE AND HEALTH. DISREGARDING
SUCH A WARNING CAN LEAD TO SERIOUS OR
FATAL INJURY .
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.
WARNING
CAUTION
CAUTION
INSTALLATION, ELECTRICAL CONNECTION AND
FITTING THE DEVICE MAY ONLY BE CARRIED
OUT BY QUALIFIED PERSONNEL AND ONLY IN
ACCORDANCE TO THIS INSTRUCTION MANUAL.
IT IS RESPONSIBILITY OF THE USER TO MAKE
SURE THAT THE DEVICE IS USED FOR SPECIFIED
APPLICATION ONLY.
FOR SAFETY MATTERS, PLEASE AVOID ANY
UNAUTHORIZED AND IMPROPERLY WORKS.
NOTE
• Temperature
- Thermometer: visual indication of oil
temperature and max. 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)
• Oil level
- Indicator: visual indicator of slight oil level
variation
- Detector: 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)
It is important to observe the limit values indicated
on the nameplate and in the operating instruction
before commissioning the device.
1.3 Safety notes on the
equipment operation
Electrical installation is subject to the relevant
national safety rules.
It is mandatory to connect the grounding cable
because of safety reason.

3
TRANSFORMER COMPONENTS
—
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.

4INTEGRATED SAFETY DEVICE| INSTRUCTION MANUAL
—
2. Comem RIS2
2.3 Drawings
2.4 General feature
General feature
Degree of protection (EN 60529) IP66
Salt-fog tight 1000 h
UV-Ray resistance (UNI-ISO 4892 / UNI-ISO 4582) 500 h
Measuring range -40°C to +120°C
Environment temperature -40°C to 55°C
Cable connection M 25 x 1.5
Cable box (EN 50005 / EN 60947-7-1 / IEC 947-7-1) According to standard
Wire section to be used on clamp box Up to 2.5 mm2
Max. rated pressure 500 mbar
Electrical characteristics Double insulation
All dimensions in mm

5
TRANSFORMER COMPONENTS
—
2. Comem RIS2
2.5 Current
2.6 Wiring diagram
Current ac dc
Circuit type Ohmic Ohmic inductive
(cosφ > 0,5)
Ohmic Ohmic inductive
(L/R < 40ms)
Voltage 220 127 24
Electric
rating
Oil level 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A 2A
Pressure switch 6A 6A 6A 2A 2A 2A 0,6A 0,6A 0,6A 0,6A 0,6A 0,6A
Thermostat 16A 16A 16A 4A 4A 4A 0,6A 0,6A 0,6A 0,2A 0,3A 1,8A
2.6.1 Wiring diagram by EN 50005 Standard
• Temp. STOP “T1” (terminals 44-41-42)
• Temp. ALARM “T2” (terminals 34-31-32)
• Pressure (terminals 24-21-22)
• Oil level (terminals 14-11-12)
• Options (flagged if present):
• 4-20 mA
• 2nd pressure switch
• PT100
D
C
B
E
F
1 2 3 4
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.
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.
DRAWING SHEET ISO 5457: 1999-A4T
100
45
4
1/18
D
Released
D-4219
SHEETITERREVSTATUSDOCUMENT ID
ITABB-9AAE306693 New electrical scheme label for RIS2
RESPONSIBLE DEPARTMENT
ETICHETTA SCHEMA ELETTRICO RIS2 (NUOVA)
COMEM
TITLE / SUPPLEMENTARY TITLERESPONSIBLE COMPANY
Component Drawing2019-07-31
PROJECT IDWORK ORDER IDBASED ON DOC IDDOCUMENT KINDAPPROVED ON
Carlo CarolloDiego BoroDiego Boro
APPROVED BYREVIEWED BYCREATED BY
© COPYRIGHT ALL RIGHTS RESERVED
LAST REVISION
DESCRIPTION
MODIFICATA SERIGRAFIA ETICHETTA - Changed label
REPLACED
REVISION
C
TOLLERANZE GENERALI SECONDO - GENERAL TOLERANCES ACCORDING TO ISO 2768
m
SCALE
NO
MATERIAL WEIGHT - kg
ETICHETTA ADESIVA - Adesive label
-
PROCESS PART NUMBER
- - 5COD421900
42
44
41
TEMP.
TRIPPING
34 32
31
TEMP.
ALARM
54 52
51
24 22
21
PRESSURE
14 12
11
GAS
+ -
4-20 mA ABb
ELECTRICAL SCHEME (EN 50005 )
7x45
NOTE
SFONDO: RAL7032
SCRITTE: NERE
Background: RAL 7032
Writing: Black
Optional
PRESS. 2
Optional PT100
Optional
2.6.2 Special wiring diagram “6 switches”
– upon request
• Temp. STOP “T1” (terminals 44-41-42)
• Temp. ALARM “T2” (terminals 34-31-32)
• Pressure 1 (terminals 24-21-22)
• Pressure 2 (terminals 54-51-52)
• Oil level 1 (terminals 14-11-12)
• Oil level 2 (terminals 64-61-62)
• Option (flagged if present):
• 4-20 mA
D
C
B
E
F
1 2 3 4
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.
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.
DRAWING SHEET ISO 5457: 1999-A4T
100
45
4
1/15
A
Released
D-4231
SHEETITERREVSTATUSDOCUMENT ID
ITABB-9AAE306693 Electrical special scheme label for RIS2
RESPONSIBLE DEPARTMENT
ETICHETTA SCHEMA ELETTRICO RIS2 SPECIALE
COMEM
TITLE / SUPPLEMENTARY TITLERESPONSIBLE COMPANY
Component Drawing2019-11-19
PROJECT IDWORK ORDER IDBASED ON DOC IDDOCUMENT KINDAPPROVED ON
Carlo CarolloDiego BoroDiego Boro
APPROVED BYREVIEWED BYCREATED BY
© COPYRIGHT ALL RIGHTS RESERVED
LAST REVISION
DESCRIPTION
NUOVA EMISSIONE - Issue
REPLACED
REVISION
TOLLERANZE GENERALI SECONDO - GENERAL TOLERANCES ACCORDING TO ISO 2768
m
SCALE
NO
MATERIAL WEIGHT - kg
ETICHETTA ADESIVA - Adesive label
-
PROCESS PART NUMBER
- - 5COD423100
42
44
41
TEMP.
TRIPPING
34 32
31
TEMP.
ALARM
54 52
51
24 22
21
PRESSURE
1
14 12
11
GAS
1
+ -
4-20 mA
ELECTRICAL SCHEME (EN 50005 )
7x45
NOTE
SFONDO: RAL7032
SCRITTE: NERE
Background: RAL 7032
Writing: Black
Optional
PRESSURE
2
64 62
61
GAS
2

6NTEGRATED SAFETY DEVICE | INSTRUCTION MANUAL
—
3. Installation
3.1 Mounting instruction
Application to a transformer tank
• Ø 60 mm ± 1 mm diam. hole on the tank
• Flat gasket (provided with the unit)
• Stainless steel fixing brackets (4 pcs packed)
• Stainless steel flat washers according to UNI 6592
Ø 8,4 mm (4 pcs packed)
• Stainless steel spring washers according to UNI
1751 Ø 8,4 mm (4 pcs packed)
• Stainless steel M8 nuts according to UNI 5588
(4 pcs packed).
Tighten the nuts in position 1,2,3,4 with torque nut 3
Nm to 4 Nm in a cross pattern; repeat the operation
following the same sequence until the suggested
value (6 Nm to 8 Nm) is reached.
Due to the deformation of the cover during lifting of
the transformer, an oil leak could be possible. It is
suggested to use covers of suitable thickness (min.
6-8 mm).
PROTECTION CAP
REMOVE BEFORE
INSTALL ATION !
TIGHNTENING TORQUE
6-8 Nm
N°4 THREADED PINS
AT 90° OR
N°3 THREADED PINS
AT 120°
M8
Ø 60 ± 1
Ø 97 ± 2
30

Normal working conditions Anomaly conditions (Comem RIS2 intervention)
Special option: double oil switches
Special option: double oil switches
7
TRANSFORMER COMPONENTS
Oil level
Temp. setting
alarm “T2”
Temp. setting
alarm “T1”
Temp. setting alarm “T2”
Temp. setting alarm “T1”
Oil level
Oil temperature
Oil temperature
Oil pressure
Pressure setting
Oil temperature
Oil temperature
Oil pressure
Pressure setting

8INTEGRATED SAFETY DEVICE | INSTRUCTION MANUAL
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3. Installation
3.2 Installations and operating
instructions
• Before installing the device remove the protective
cap from the oil down flow hole.
• Ensure the bearing surface is smooth and flat.
• A four stud fixing is recommended.
• Protect Comem RIS2 device from any subsequent
paint operation.
• Only install Comem RIS2 after the transformer
drying operation.
• Switch off the supply voltage prior to working on
Comem RIS2
• Operation and maintenance of Comem RIS2 should
only be carried out by skilled personnel.
• ABB disclaim all responsibility for incorrect
installation or improper use.
• On receipt of the goods please check the attached
test certificate.
• The Comem RIS2 is guaranteed against defective
parts for 12 months.
• Do not use powerful solvents or benzene's for
cleaning. A damp cloth should.
• Do not remove float from inside Comem RIS2
3.3 Instructions for topping up
the level on Comem RIS2
Foreword
The device is filled with oil exclusively by the
transformer manufacturer at environment
temperature. At the time of putting into service,
ensure what Comem RIS2 device is completely filled
with oil. For various reasons, the oil may be below
the set level. If the transformer is warm, due to high
environment temperature or to its own operation,
the internal pressure may increase, causing a visible
drop in the oil level in the chamber of the device.
• To solve this problem it is sufficient to remove the
lead seal on the lever of the tap 1 (see diagram),
partly unscrew cap 2, slightly turn the lever of tap
1, thus releasing pressure and causing the oil level
to rise until the device is completely full. After
operation, ensure that cap 2 is closed and clean off
any oil I that may have leaked out of the device.
• When the transformer is cold, due to a long period
of inactivity, and/or an outdoor temperature
below that of the environment, a vacuum may
form inside the transformer, with consequent fall
of the oil level visible on the external chamber of
the device. This problem may be solved by
removing the lead seal on the cap 2, unscrewing
the cap 6 and topping up the oil level slowly with
the aid of a funnel until the device is completely
full, taking care not to let it overflow. Close the
device with the cap 6.
• DO NOT USE THE OIL FILTER ON THE COMEM
RIS2 FOR GENERAL FILLING OF THE
TRANSFORMER, ONLY FOR TOPPING UP THE
DEVICE
• WHEN FILLING THE COMEM RIS2. WITH OIL
MAKE SURE THE BLEED COCK IS OPEN AND
FILL UNTIL FLOAT REACHES THE “MAX”
POSITION.
• AFTER FILLING ENSURE THE BLEED COCK AND
FILLER CAP ARE FULLY CLOSED. HAND
TIGHTEN ONLY, NO TOOLS REQUIRED.
• AFTER SETTING THE THERMOMETER POINTER
ENSURE THE PROTECTIVE WINDOW IS
SECURED, HAND TIGHTEN ONLY.
• CHECK THE CABLE GLAND M25X1,5 IS
SECURELY FITTED.
• THE EVENT OF A MAJOR OIL LEVEL VARIATION
OR HIGH GAS EVOLVEMENT THE FLOAT WILL
REACH “MIN” POSITION, TRIGGERING THE
ALARM SWITCH, IT WILL THEN BE NECESSARY
TO BLEED OFF GAS OR ADD OIL.
WARNING

9
TRANSFORMER COMPONENTS
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3. Installation
Once the oil level in the device has been topped up,
the transformer may be started.
If there is no oil available for topping up, ABB
supplies a set of accessories with the pump which
can create a vacuum in the device, thus restoring the
oil level.
Instructions
The operations are performed as follows:
A) Remove the cap “2”, screw the valve “3” and its
nipple onto the tap “1”.
B) Remove the cap “4”, fit the pump “5” by means of
the threaded coupling provided and turn the lever
to OFF position.
C) The pump is already set to create a vacuum.
D) To restore the oil level inside the R.I.S. device,
open the lever of the tap “1” and suck with the
pump “5”. After this operation, close the lever of
the tap “1”.
E) Release air from the pump, turning the lever to
ON position.
If the oil level reached is not sufficient, repeat
operations “D” and “E”.
Once the operations are complete, remove the
components “5” and “3” and close the device with
the cap “2”.
4
ON
3
2
1
6
5
MAX MAX
MIN
MIN
IT IS RECOMENDED TO CLOSE THE CUP 6
WITHOUT TOOLS OR SPANNER. AT LEAST, IT IS
POSSIBLE TO USE A DEDICATED TOOL: (SEE
PICTURE 2)
CAUTION
Picture 2

10 INTEGRATED SAFETY DEVICE | INSTRUCTION MANUAL
—
3. Installation
3.4 Drawings
All dimensions in mm

11
TRANSFORMER COMPONENTS
—
4. Test
—
Comem RIS2 has fully passed the
type tests prescribed by both
European Standard EN 50216-3 and
by ABB internal technical standards,
which are listed as follows:
Type tests
• Pressure overload: 2.5 bar - 2 minutes - with oil at
115 °C
• Operation at extreme temperatures: at -40 °C and
120 °
• Classification of the IP 66 protection rating:
EN 60529
• Classification of ambient conditions: 4K2, 4Z2,
4B1, 4C2, 4S3, according to EN 60721-3-4
• Mechanical vibrations 4M4 (shock 250 m/sec2.
Time spectrum “I”: 11 ms), according to EN 60721-3-4
• Gas or oil volume for contact switching at ambient
temperature and at the average working
temperature of the transformer: max. 150 cm3
• Contact response time: < 0.5 seconds
• Allowed max. magnetic field value: 25 mT (no
intervention of Comem RIS2 According to
EN 50216-3
• Tightness test - 1000 hours in saline saturated
atmosphere UNI-ISO 9227-93 (NSS)
• Tightness test against UV ageing according to UNI
ISO 4892.
Routine tests
Before shipment each piece is also subjected to the
following routine tests:
• Tightness test: 30 minutes - 1 bar - with oil at 90 °C
• Operation of thermostats
• Pressure switch operation
• Oil level switch operation
Options on request
• Pneumatic pump set / oil re-fill in altitude. Code:
1ZBG000053-SPAR.
Supply conditions
Comem RIS2 is supplied in a single sturdy carton
(dimensions: 400 mm x 200 mm x 160 mm, weight:
2.2 kg) and complete with the following accessories:
• Instruction booklet for installation and use
• Fixing kit
• Test report.

9AKK107046A5449_EN_27-05-2020
—
ABB Power Grids Italy S.p.A.
COMEM Operating Unit
Strada Regionale 11, Signolo 22
36054 Montebello Vicentino (VI) - ITALY
www.abb.com/transformercomponents
The data and illustrations are not binding. We reserve the right to modify
the contents of this document without prior notice following technical
and product developments.
© Copyright 2020 ABB. All rights reserved.