HB 605/04 EN - Use of SF6 insulating gas in ZX-Switchgear - Abb

Manual for installation and operation HB 605/04 en
Use of SF6 insulating gas in ZX-Switchgear
Gas-insulated medium voltage switchgear
2 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
Your safety first - always!
ThatтАШs why our instruction manual begins with these recommendations:
тИТтИТ Operate the switchgear as prescribed for its intended purpose.
тИТтИТ Ensure that the technical data on the name plate and in the specification are not exceeded during operation of the switchgear.
тИТтИТ Only install the switchgear in enclosed rooms suitable for electrical equipment.
тИТтИТ With the aim of a smooth installation sequence and ensuring a high quality standard, have installation at site performed by
specially trained personnel or managed and supervised by the ABB Service Department.
тИТтИТ Ensure that installation, operation and maintenance are only performed by specialist electricians familiar with this manual.
тИТтИТ Comply in full with the legally recognized standards (IEC / DIN EN), the connection conditions of the local electrical utility
and the applicable safety at work regulations.
тИТтИТ Follow the instructions in the documentation when performing any work on switching devices and switchgear.
тИТтИТ Keep all documentation accessible to all persons concerned with installation, operation and maintenance.
тИТтИТ The userтАЩs personnel bear unlimited responsibility in all matters affecting safety at work and the correct handling of the
switchgear in accordance with EN 50110 and national regulations.
тИТтИТ Always observe the five safety rules set out in EN 50110 on establishing and securing the off-circuit condition at the place
of work for the duration of work on the switchgear. Gas-insulated switchgear are notable for maximum safety, as the circuitbreaker performs the earthing switch function in conjunction with the three position disconnector. The sequence of safety
rules therefore deviates from that proposed in the standard as follows:
Isolate,
Check the off-circuit condition,
Earth and short-circuit,
Secure to prevent reconnection,
Cover or guard off adjacent live
parts.
If you have any further questions on this manual, the members of our field organization will be pleased to provide the required information.
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 3
Content
Page
1. General 6
1.1
General information on sulphur hexafluoride (SF6) 6
1.2 Influence of SF6 on the environment 6
1.3Voluntary commitment 6
2. Insulating gas systems of ZX switchgear
7
7
2.1Switchgear type ZX0 block design
2.2 Switchgear type ZX0.2 8
2.3Switchgear type ZX1.2 9
2.4Switchgear type ZX2 10
2.5 Gas monitoring 11
2.5.1 Gas monitoring with density sensors 11
2.5.2
Gas monitoring with a pressure gauge 11
2.6Drying agent 11
3 Handling sulphur hexafluoride (SF6) 12
3.1Safety at work 12
3.2Hazards to health 12
4
Gas work 13
4.1General notes 13
4.2
Minimum requirements and the conditions for the certification of personnel recovering SF6 13
4.3
Delivery form of SF6 in gas cylinders 15
4.4Notes on the filler valve 15
4.5Topping up insulating gas 16
4.6Removal of insulating gas 16
4.7Filling compartments with insulating gas 17
4.8Testing of insulating gas 17
4.9Handling of the drying agent 17
5
Actions at the end of the switchgear service life 18
6
Technical data 19
6.1Ratings 19
6.2Insulating gas capacities 20
6.3Number of drying agent bags 21
7Sample works instructions 22
Appendix A Safety Data Sheet Sulphur Hexafluoride 25
4 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
Hazard warning, meaning in this manual that death
or serious injury and considerable damage may occur if the actions described are not performed.
This manual serves as a supplement to the manuals for ZX0 block
design, ZX1.2 and ZX2 switchgear. It contains safety and environmental topics concerning the insulating gas and describes the use
of insulating gas and its handling.
Fundamental notes on this manual
Read the relevant sections of this manual through in full before
performing work, so as to ensure correct handling.
?
Important note, meaning in this manual that injury
and damage may occur if the actions described are
not performed.
Paragraphs in this manual are marked in accordance with their
significance. The markings mean the following:
Take particular account of the relevant standards listed below. Observe the national technical specifications and the accident prevention
regulations of the country in which the switchgear is operated.
IEC 60376
IEC 60480
Specification of technical grade sulphur hexafluoride (SF6) for use in electrical equipment
Guidelines for the checking and treatment of sulphur hexafluoride (SF6) taken from electrical equipment and
specification for its re-use
Technical Report
High-voltage switchgear and controlgear тАУ
IEC 62271-303
Use and handling of sulphur hexafluoride (SF6)
National technical accident prevention regulations e.g. for electrical systems and equipment, SF6 installations and requirements for pressurized gas
bottles.
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 5
1 General
1.2 Influence of SF6 on the environment
ZX panels contain sulphur hexafluoride gas (chemical formula SF6)
as the insulating medium. After leakage testing and evacuation at
the works, the gas compartments are filled with SF6 up to the rated filling pressure for insulation, and delivered to site in that condition, where they can as a rule be installed without any gas work.
The high infrared absorption of SF6 and its long life in the environment are the reasons for its high GWP (Global Warming Potential),
which, according to the latest IPCC Report (IPCC: Intergovernmental Panel on Climate Change) is 22200 times higher than that
of CO2 (carbon dioxide).
The gas compartments meet the requirements for sealed pressure
systems to IECтАп62271-1. No further gas or vacuum treatment is
necessary during the expected service life of the switchgear. The
leakage rate of the switchgear is less than 0.1 % per year.
The GWP of a greenhouse gas indicates the amount by which a
certain quantity of the gas released into the atmosphere contributes more or less strongly to the greenhouse effect than the same
quantity of CO2. The GWP is based on the average warming effect
over a period of 100 years. CO2 has a GWP of 1.
The SF6 gas density in the gas compartments is permanently
monitored during operation of the switchgear by means of density
sensorsтАп1) (= temperature-compensated pressure sensors). In the
most unlikely event of leakage from a gas compartment, a signal
is issued when the warning signal for insulation level is reached
(see technical data).
1.1 General information on
sulphur hexafluoride (SF6)
SF6 is an inorganic chemical compound of the elements sulphur
and fluorine. It is a non-toxic, colourless and odourless inert gas.
As SF6 is heavier than air it displaces the oxygen in the air if it is
inadvertently set free. The dielectric strength of SF6 is 2.5 times
that of air. It is therefore excellently suitable for use as an insulating
gas in electrical equipment.
SF6 is approximately five times heavier than air and can accumulate in low-lying spaces. If large quantities escape into the working
area, SF6 leads to a displacement of oxygen from the air people
breathe (danger of asphyxiation). SF6 concentrations of over 19 %
by volume reduce the oxygen content of the air to below 17 % by
volume and special protective measures are therefore required.
The use of SF6 has made it possible to construct new, more efficient switchgear. The change from conventional insulation to the
non-combustible, chemically inactive and non-toxic heavy gas
sulphur hexafluoride has led to considerable savings in space and
materials, and to greater safety of the systems.
1)
2)
The total contribution of SF6 to the global greenhouse effect is approx. 0.2 %.
The GWP of SF6 represents only one indicator of the environmental impact of electrical equipment containing SF6. Life Cycle Assessments 2) show that the use of equipment containing SF6 also
allows the CO2 emissions of the entire system to be reduced as a
result of the reduction in network losses.
1.3 Voluntary commitment
ABB AG in Germany has, together with other manufacturers and
operators in the associations VIK, ZVEI and VDN which represent
the power engineering industry in Germany, committed itself in a
voluntary agreement on electrical equipment > 1 kV in the Federal
Republic of Germany to avoiding SF6 emissions wherever possible.
The agreement sets out sustainable strategies, including both the
responsible handling of equipment containing SF6 on decommissioning and the entire process of return, recovery and reuse.
The efforts of the industry are directed at maintaining a closed
life cycle. Especial importance is attached to the environmentally
sound recycling of the individual components of electrical equipment and to reuse of the normally reusable sulphur hexafluoride.
All the businesses involved in the life cycle process must therefore
comply with the voluntary commitment.
Recovered SF6 is as a rule either reused directly at site, or returned in a closed system to the manufacturer for reuse.
In the case of the ZX0 without auxiliary voltage, pressure gauges are used
E.g. the Life Cycle Assessment тАЬSF6 GIS Technology in Power Distribution тАУ Medium VoltageтАЭ by various manufacturers and operators of gas-insulated switchgear in 2003
6 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
2 Insulating gas systems of
ZX switchgear
2.1 Switchgear type
ZX0 block design
The fundamental structure of the insulating gas system depends
on the switchgear type. The insulating gas systems of switchgear
types ZX0 in block design, ZX0.2, ZX1.2 and ZX2 are presented
below.
Several panel modules form a common gas compartment (figures
2.1.1 and 2.1.2). This block can consist of up to six panel modules. Each block is equipped with a filler valve and a density sensor or pressure gauge.
The busbars of the panel blocks are connected together at site by
means of plug-in busbar connectors, without any gas work being
required.
Fig. 2.1.1: Sectional view of an example panel in ZX0 block design
Panel module
(gas-filled)
Fig. 2.1.2: Gas diagram of an example ZX0 switchgear installation consisting of 2 panel blocks with 3 panels each
Panel block
(gas-filled)
Legend
Density sensor /
pressure gauge
Filler valve
Gas partition
SF6 insulating gas
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 7
2.2 Switchgear type ZX0.2
The gas compartments of adjacent panels are not connected together (figures 2.2.1 and 2.2.2).
Each panel is equipped with a filler valve and a density sensor.
Fig. 2.2.1: Sectional view of an example ZX0.2 panel
Panel module
(gas-filled)
Fig. 2.2.2: Gas diagram of an example ZX0.2 switchgear installation
Panel module
(gas-filled)
Legend
Density sensor
Filler valve
Gas partition
(plug-in busbar
sockets)
Insulating gas SF6
8 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
2.3 Switchgear type ZX1.2
The circuit-breaker compartment and the busbar compartment
each form separate gas compartments (figures 2.3.1 and 2.3.2)
and are filled and monitored by their own filler valves and density
sensors. The gas compartments of the individual panels erected
side by side are not connected together.
Fig. 2.3.1: Sectional view of an example ZX1.2 panel
Circuit-breaker
compartment
(gas-filled)
Busbar compartment
(gas-filled)
Fig. 2.3.2: Gas diagram of an example ZX1.2 switchgear installation
Busbar compartment
(gas-filled)
Legend
Density sensor
Circuit-breaker
compartment
(gas-filled)
Filler valve
Gas partition
(plug-in busbar
sockets)
Insulating gas SF6
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 9
2.4 Switchgear type ZX2
Panels with one feeder and coupler panels
Double feeder panels
The circuit-breaker compartment and the two busbar compartments each form separate gas compartments (figures 2.4.1 and
2.4.2) and are filled and monitored by their own filler valves and
density sensors. The gas compartments of the individual panels
erected side by side are not connected together.
The busbar compartment for the two feeders in a double feeder
panel is a continuous gas compartment extending over the panel
width of 800 mm. The two circuit-breaker compartments in a double feeder panel are two independent units.
Fig. 2.4.1: Sectional view of an example ZX1.2 panel
Rear busbar
compartment
(gas-filled)
Front busbar
compartment
(gas-filled)
Circuit-breaker
compartment
(gas-filled)
Fig. 2.4.2: Gas diagram of an example ZX2 switchgear installation, double busbar version
Panel with one feeder
Rear busbar
compartment
(gas-filled)
Double feeder panel
Legend
Density sensor
Front busbar
compartment
(gas-filled)
Circuit-breaker
compartment
(gas-filled)
10 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
Filler valve
Gas partition
(plug-in busbar
sockets)
Insulating gas SF6
2.5 Gas monitoring
Fig. 2.5.1.1: Density sensor
2.5.1 Gas monitoring with density sensors
Gas monitoring with density sensors (figure 2.4.1.1) is used in systems with auxiliary power supply. If the gas pressure falls below
the level for a warning signal, a signal to top up the insulating gas
is issued. In circuit-breaker systems the signal is displayed by a
warning lamp or on a panel control unit. In switch-disconnector
systems, the signal is displayed by a warning lamp.
Note that wire breakages, defective plug-in and terminal connections for the sensor and defective sensors will also lead to a signal.
When isolating systems for a relatively long period, maintain the
auxiliary power supply to monitor the insulating gas density.
2.5.2 Gas monitoring with pressure gauges
Gas monitoring with pressure gauges (figure 2.5.2.1) is used in
systems of type ZX0 in block design without auxiliary power supply. The pressure gauges are located in the low voltage compartment of the relevant panel and can be read even when the low
voltage compartment door is closed.
Fig. 2.5.2.1: Pressure gauge with operating pressure diagram.1:
?
Check the insulating gas pressure at regular intervals. The insulating gas pressure must be within the
limits shown in the operating pressure diagram (in relation to
the temperature in the low voltage compartment).
?
The pressure gauge is not temperature-compensated. Note that the temperature in the gas compartment is assumed to be equal to the temperature in the low
voltage compartment. Deviations in temperature can lead to
inaccurate readings.
2.6 Drying agent
The gas compartments contain a drying agent in the form of drying agent bags. These are used to bind the residual moisture in
the gas compartments. The drying agent is maintenance-free.
Replacement of drying agent bags is only necessary when a gas
compartment has been opened for repair purposes.
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 11
3 Handling sulphur hexafluoride (SF6)
3.1 Safety at work
Observe the technical report IEC 62271-303 and the accident
prevention regulations issued by the relevant professional bodies.
Keep these accident prevention regulations accessible to all staff
who perform work on SF6 gas compartments.
Compile instructions for work on SF6 gas compartments and
display them at a clearly visible location in the switchgear room.
Sample instructions can be found at the end of this document.
Do not enter the switchgear room when an arc fault
has occurred, or leave it immediately. Ventilate the
switchgear room sufficiently before entering it without protective equipment.
Details of first aid procedures after inhaling or contact with SF6
decomposition products can be found in the technical report
IEC┬а62271-303.
Do not smoke, eat, drink or weld while performing cleaning work.
Observe the requirements for wearing protective equipment as set
out in IEC 62271-303 and national regulations.
Use the instruction sheets to instruct staff performing work on
SF6 gas compartments on the possible hazards and protection
required before they commence their activities and then at least
once each year.
3.2 Hazards to health
тИТтИТ Pure SF6 is non-toxic, colourless and odourless.
тИТтИТ The limit for SF6 in air is 1000 ml / m3 or 6100 mg / m3.
тИТтИТ Observe the technical report IEC┬а62271-303.
SF6 is around five times heavier than air. SF6 therefore displaces the oxygen in the air we breathe. It
can lead to a risk of asphyxiation in opened, nonventilated SF6 gas compartments, or when relatively large
quantities of SF6 escape from SF6 gas compartments or
pressure vessels and there is insufficient ventilation at the
floor level of constricted, enclosed switchgear rooms or
spaces beneath switchgear rooms, e.g. basements or cable
ducts. If SF6 accumulates in low-lying spaces, remove it immediately.
Avoid generating heat, e.g. by smoking or performing welding
work, when handling SF6.
SF6 decomposition products are created by arc faults in an SF6
gas compartment. These decomposition products can be toxic or
hazardous to health when inhaled, swallowed or allowed to come
into contact with the skin, or can cause irritation or even possibly
acid burns to the eyes, respiratory organs or skin.
Decomposition products can be detected at an early stage by a
pungent, unpleasant odour (like rotten eggs).
12 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
4 Gas work
increase in humidity in the gas compartment. Temporarily
apply drying agent in opened gas compartments during
any unavoidable extended breaks in work and seal the gas
compartments at least provisionally with plastic sheeting.
Panels of the ZX range are tested for gas-tightness at the works
(leakage rate measurement by the integrated leakage testing system) and then filled with insulating gas. Topping up of insulating
gas during the expected service life of the switchgear is therefore
not necessary.
As a result of the plug-in busbar technology, no gas work is required during installation at site in the majority of cases.
Gas work during installation of the switchgear is only necessary
when
4.2 Minimum requirements and the conditions for the certification of personnel recovering SF6
It is to be noted that together with general qualifications, safety
and work and environmental considerations and electrical engineering knowledge, statutory minimum requirements (in national
law) are now also applicable conditions for personnel recovering
SF6 from high voltage switchgear and switching devices (referred
to below simply as switchgear).
тИТтИТ heat sinks are used (panels with IrтАп>тАп2000тАпA and cooling
with heat sinks; the heat sinks are fitted at site and filled
with SF6),
тИТтИТ the panels have been transported by air freight,
Under the terms of Article 4, тАЬRecoveryтАЭ and Article 5, тАЬTraining
and certificationтАЭ of Regulation (EC) No 842/2006 on certain fluorinated greenhouse gases, precautions are to be taken to ensure
that the SF6 is properly recovered solely by certified personnel who
meet the relevant minimum requirements.
тИТтИТ application of integrated busbarmetering equipped with
isolating device at ZX2-switchgear.
4.1 General notes
In that context, evidence is to be provided that the personnel
involved in gas removal (recovery) activities from switchgear have
passed a theoretical and practical examination.
тИТтИТ We recommend calling in ABB after-sales service personnel
for work in gas compartments.
тИТтИТ Never discharge SF6 into the atmosphere.
тИТтИТ Replacement of the insulating gas in the system is not necessary. SF6 can be considered as good as new even after
long periods of use as an insulating gas.
тИТтИТ A two stage vacuum pump with a delivery of at least
6┬аm 3┬а/┬аh is required for evacuation of a gas compartment
prior to filling with insulating gas.
This qualification / training can be performed in relation to our
switchgear technology by our corresponding training departments
and certified by means of an examination certificate within the parameters of our quality assurance system.
Minimum requirements as to the skills and knowledge to
be covered by the evaluation bodies
The examination shall comprise the following:
a) a theoretical test with one or more questions testing that skill or
knowledge, as indicated in the column тАЬTest TypeтАЭ by (T);
тИТтИТ An SF6 gas filling unit is required for filling and topping up
the insulating gas.
тИТтИТ A leakage tester and a dew point measuring instrument are
required for filling of insulating gas when the gas compartment has previously been opened.
b) a practical test where the applicant shall perform the corresponding task with the relevant material, tools and equipment, as
indicated in the column тАЬTest TypeтАЭ by (P).
тИТтИТ A gas service unit with the facility for recovery of the gas is
required for removal of SF6.
тИТтИТ Protect the gas hoses on the equipment from moisture.
Use hose fittings with non-return valves to prevent the ingress of humid air into the hoses. Close off the hose fittings
with caps after use.
тИТтИТ Limit the ingress of ambient air during work on emptied
and opened gas compartments so as to minimize any
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 13
No.
Minimum Knowledge and Skills
Test Type
Basic knowledge of relevant environmental issues (climate change, Kyoto Protocol, Global Warming Potential), the relevant
1
provisions of Regulation (EC) No 842/2006 and of the relevant Regulations implementing provisions of Regulation (EC) No.
T
842/2006.
2
Physical, chemical and environmental characteristics of SF6
T
3
Use of SF6 in electric power equipment (insulation, arc quenching)
T
4
SF6 quality, according to the relevant industrial standards
T
5
Understanding of the design of electric power equipment
T
6
Checking the SF6 quality
P
1)
7
Recovery of SF6 and SF6 mixtures and purification of SF6
P
8
Storage and transportation of SF6
T
9
Operation of SF6 recovery equipment
P
10
Operation of tight drilling systems - if necessary
11
Re-use of SF6 and different re-use categories
T
12
Working on open SF6 compartments
P
13
Neutralising SF6 by-products
T
14
P
2)
Monitoring of SF6 and appropriate data recording obligations under national or Community legislation, or international
agreements
The staff must fulfil the following conditions for the handling of SF6:
тИТтИТ General knowledge of the medium SF6
тИТтИТ General qualification in the fields of health and safety at
work / environmental protection
тИТтИТ Electrical engineering knowledge
тИТтИТ Knowledge of the statutory minimum requirements for
handling SF6
тИТтИТ Technical knowledge of the system or device types concerned
T
The training courses apply to all personnel performing SF6 recovery work.
The operators of high voltage switchgear are responsible for ensuring that the fluorinated greenhouse gas SF6 is properly recovered by certified personnel so as to ensure its reuse, recycling,
reclamation or disposal/destruction in a professional and environmentally sound manner.
The once and for all certification covers not only training and qualification for the work involved, but also corresponding knowledge
of the applicable regulations and standards and the necessary
expertise in emission avoidance, recovery of SF6 and safe handling of the relevant equipment.
This qualification can be obtained in our training department on
the relevant ABB switchgear. On passing the examination, a certificate will be issued for each participant as specified in our quality
assurance system. The minimum requirements for the training
modules can be found in the current issue of IEC 62271-303 and
the national training regulations.
1)
2)
For instance IEC 60376 and IEC 60480
Recommended by the Regulation. This procedure for gas removal does not apply to ZX switchgear, as the gas compartments are always accessible via a filler valve (see sections 4.4 and 4.6).
14 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
4.3 Delivery form of SF6 in gas cylinders
4.4 Notes on the filler valve
If required in exceptional cases, SF6 is delivered in liquid form in
pressure vessels (gas cylinders). Only use SF6 which complies
with IEC 60376 or IEC 60480. Handle, store and use the gas vessels in accordance with IEC 62271-303 and the local regulations.
A gas analysis is available for every gas delivery.
Store the pressurized gas vessels in a dry, clean place protected
from direct sunlight at a maximum temperature of 50 ┬░C. If temperatures of over 50 ┬░C cannot be ruled out during storage or
transport, order gas vessels with a correspondingly reduced filling
factor.
Figure 4.4.1 shows the filler valve with protective cap. The protective cap can be unscrewed by turning it counter-clockwise (figure
4.4.2).
?
Do not press the valve pin (2) in, as gas would flow
out of the valve.
A coupling is necessary to connect a hose to the filler valve (figure
4.4.3). The coupling has an M 20 x 1.5 thread. If the union nut on
the hose set has a different thread, use an appropriate adapter
(figure 4.4.4).
As a rule, no deliveries of gas cylinders are required.
Fig. 4.4.1: Filler valve with protective cap
Fig. 4.4.3: Filler valve with coupling for hose connection
1
1
2
3
4
5
Fig. 4.4.2: Filler valve, protective cap removed
2
3
4
5
Filler valve
Locking ring
Coupling
M 20 x 1.5 thread
Union nut on the hose set
Fig. 4.4.4: Using an adapter to fit the union nut on the hose set
1
6
2
3
6 Adapter
1 Filler valve
2 Valve pin
3 Protective cap
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 15
4.5 Topping up insulating gas
тИТтИТ Monitor the pressure rise during the topping up process.
Perform the checks during temporary interruptions to the
gas feed.
Erection of the switchgear
тИТтИТ Remove the filler hose. In that process the locking ring is to
be pulled back and the coupling withdrawn from the filler
valve.
If the panels are to be transported by air freight (an exceptional
case), the gas compartments are delivered with a reduced SF6
pressure. In such cases, the pressure is to be increased to the
rated filling pressure prior to installation of the panels.
Switchgear in service
It is not necessary to top up the insulating gas during the expected service life of the system. Should a pressure loss signal nevertheless be issued, the following procedure is to be adopted:
тИТтИТ Finally refit the protective cap to the filler valve.
4.6 Removal of insulating gas
Removal of insulating gas from the gas compartments in the
switchgear system is only necessary
тИТтИТ Record the time of the pressure loss signal.
тИТтИТ before repair work inside a gas compartment, and
тИТтИТ Clarify the cause of the pressure loss signal. A pressure
loss signal may also result from a defective electrical
connection in the secondary circuit or a defective density
sensor.
тИТтИТ Measure the pressure in the gas compartment concerned
with a temperature-compensated pressure gauge.
тИТтИТ Notify the ABB service department immediately and agree
the further action to be taken.
тИТтИТ Note: Temporary operation of the panels at atmospheric
pressure (> 100 kPa) is in principle possible if the SF6
content of the insulating gas is at least 95 %. (Exceptions:
double feeder panels with a rated voltage of 24 kV, panels
with a rated voltage of 40.5┬аkV, switching of the switchdisconnector and panels with switch-disconnectors and
fuses. See section 6.1.)
Topping up the insulating gas
тИТтИТ Connect the hose of the gas filling unit to the coupling
(figure 4.4.3). Use an adapter if necessary to fit the thread
of the connecting hose to the M 20 x 1.5 thread of the
coupling (figure 4.4.4).
тИТтИТ Unscrew the protective cap from the filler valve (figure
4.4.2). A fastening cord prevents the cap from being lost.
?
Do not press the valve pin in, as gas would flow out
of the valve!
тИТтИТ at the end of the service life of the switchgear.
SF6 must never be discharged into the atmosphere. The gas can
be removed, tested and stored using a gas recovery unit.
Procedure
тИТтИТ Connect the hose of the gas recovery unit to the coupling
(figure 4.4.3). Use an adapter if necessary to fit the thread
of the connecting hose to the M 20 x 1.5 thread of the
coupling (figure 4.4.4).
тИТтИТ Unscrew the protective cap from the filler valve (figure
4.4.2). A fastening cord prevents the cap from being lost.
?
Do not press the valve pin in, as gas would flow out
of the valve!
тИТ тИТ Fit the coupling (figure 4.4.3) to the filler valve by pulling the
locking ring on the coupling back and pressing the coupling onto the filler valve.
тИТ тИТ Test the gas, remove and store it in accordance with the
operating instructions for the gas recovery unit.
тИТ тИТ Remove the filler hose. In that process the locking ring is to
be pulled back and the coupling withdrawn from the filler
valve.
тИТ тИТ Finally refit the protective cap to the filler valve.
тИТтИТ Fit the coupling (figure 4.4.3) to the filler valve by pulling the
locking ring on the coupling back and pressing the coupling onto the filler valve.
тИТтИТ Allow the insulating gas to flow into the gas compartment
as described in the operating instructions for the SF6 gas
filling unit used. The required filling pressure is equivalent to
the rated filling pressure for insulation.
16 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
4.7 Filling compartments with
insulating gas
4.8 Testing of insulating gas
We recommend you to conduct dew point measurement of the
insulating gas after gas work at site. The dew point measurement
can take place during operation of the panel concerned, and
should be performed a few weeks after filling it with gas. After that
period, a constant gas humidity has been established.
Filling of individual gas compartments with insulating gas is only
necessary
тИТтИТ after fitting of heat sinks and/or to-mounted boxes for the
busbar metering system with isolating devbice at ZX2 and
Testing of the insulating gas is not necessary during normal operation of the ZX switchgear.
тИТтИТ after repair work inside a gas compartment.
The air or the N2 transport gas is removed from the gas compartment. The gas compartment concerned can be filled with SF6 at a
pressure of тЙд 1 kPa (= 10 mbar).
New drying agent must always be used in the gas compartments
when they are filled with insulating gas (see section 4.9).
Procedure for dew point measurement
Connect the filler valve of the gas compartment to a dew point
measuring instrument. Determine the dew point of the gas as described in the operating instructions for the measuring instrument.
In connection with the operating conditions for indoor switchgear,
the dew point must not exceed a value of -5 ┬░C 1). For safety
reasons, we recommend a minimum value for the dew point of
-15┬а┬░C 1).
Procedure
тИТтИТ Connect the hose of the vacuum pump to the coupling
(figure 4.4.3). Use an adapter if necessary to fit the thread
of the connecting hose to the M 20 x 1.5 thread of the
coupling (figure 4.4.4).
4.9 Handling of the drying agent
тИТтИТ Unscrew the protective cap from the filler valve (figure
4.4.2). A fastening cord prevents the cap from being lost.
тИТтИТ Fit the coupling (figure 4.4.3) to the filler valve by pulling the
locking ring on the coupling back and pressing the coupling onto the filler valve.
тИТтИТ Evacuate the gas compartment to a pressure of тЙд 1 kPa
(= 10 mbar). Perform pressure measurements during the
evacuation process with the pump or hose valves temporarily closed. Leave the pump switched on for a further 30
minutes.
Replacement of drying agent bags is not necessary while the
switchgear is in service.
Replace the existing drying agent bags after work in opened gas
compartments. Consult the tables in section 6.3 for the number of
drying agent bags.
Replace the drying agent bags immediately before sealing the gas
compartment. Fill the gas compartment with SF6 immediately after
sealing.
тИТтИТ Connect an SF6 gas filling unit to the filler valve in place of
the vacuum pump.
Notes:
тИТтИТ The drying agent bags are heat-sealed in film to protect
them from moisture. An indicator inserted in the protective
bag shows the moisture content, as follows:
тИТтИТ Allow the SF6 to flow into the gas compartment as described in the operating instructions for the SF6 gas filling
unit used. The required filling pressure is equivalent to the
rated filling pressure for insulation.
тИТтИТ When the indicator is blue in colour, the drying agent
bags are dry and usable.
тИТтИТ Remove the filler hose. In that process the locking ring is to
be pulled back and the coupling withdrawn from the filler
valve.
тИТтИТ When the indicator is pink in colour, the drying agent
bags are moist and not usable.
тИТтИТ Refit the protective cap to the filler valve.
тИТтИТ Carefully check the tightness of the gas compartment and
the filler valves with a gas leakage tester. The scanning
speed should not exceed 1-2 cm / s.
1)
For a ZX0 switchgear installation without auxiliary voltage at an ambient temperature of -25тАп┬░C, a correspondingly lower value is required. In this case we recommend a minimum dew point of -35 ┬░C.
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 17
тИТтИТ Only open the protective bags immediately before the drying agent bags are to be placed in the gas compartment.
тИТтИТ Drying agent bags which have not been contaminated
with SF6 decomposition products can be disposed of as
residual waste.
тИТтИТ Follow the regulations of the responsible local authorities
when disposing of drying agent bags which are contaminated with SF6 decomposition products.
5 Actions at the end of the switchgear service life
SF6 must never be discharged into the atmosphere.
ABB can be appointed to decommission and dismantle the
switchgear. The switchgear system is then professionally dismantled by ABB and the SF6, which is normally reusable, removed
before the switchgear is broken down into its remaining components. In ZX systems, the SF6 can be removed at site after
decommissioning with appropriate equipment connected to the
filler valves. If it complies with IEC 60480 (DIN EN 60480) standard
after removal, it can be directly reused by the operator. If it is in
accordance with the gas manufacturerтАЩs тАЬRe-use SpecificationтАЭ
according to IEC 62271-303, it can be returned to ABB or the gas
manufacturer as a product.
Drying agent bags which have not been contaminated with SF6
decomposition products can be disposed of as residual waste.
Follow the regulations of the responsible local authorities when
disposing of drying agent bags which are contaminated with SF6
decomposition products.
18 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
6Technical data
6.1 Ratings
The following table applies to all ZX0 block design, ZX1.2 and ZX2
panel types.
Table 6.1.1: ZX0, ZX1.2, ZX2 Ratings
Site altitude
m
Rated voltage
Ur
kV
Alarm level for insulation
pae
kPa
Rated filling level for insulation
pre
kPa
pmm
kPa
120
psw
kPa
130
Minimum functional level for operation
Rated filling level for switch
5)
5)
> 1000
тЙд 1000
...24
(only ZX2)
...36
1) 2)
...40.5
...36
120
100
130
110
-
-
Insulating gas density, relative to the rated filling level for insulation
g / dm3
Dew point service level
┬░C
7.9
Response level of pressure relief system
kPa
> 200
> 200
kPa
120
100
kPa
190
170
тЙд 1000
> 1000
тЙд -5
6.7
тЙд -5
4) 5)
5)
тЙд -5
5)
Set points of the density sensors
(= temperature-compensated pressure sensors)
Lower threshold (= alarm level for insulation)
pae
Upper threshold for optional rapid shutdown
The following table applies to all ZX0.2 panel types.
Table 6.1.2: ZX0.2 Ratings
Site altitude
m
Rated voltage
Ur
kV
Alarm level for insulation
pae
kPa
Rated filling level for insulation
pre
kPa
pmm
kPa
140
psw
kPa
150
Insulating gas density, relative to the rated filling level for insulation
g / dm3
7,9
Dew point service level
┬░C
тЙд -5
Response level of pressure relief system
kPa
> 240
Minimum functional level for operation
Rated filling level for switch
6)
6)
1) 2)
...24
...36
...24
120
6)
140
100
130
7)
150
110
-
-
8)
9,1
6,7
5)
Set points of the density sensors
(= temperature-compensated pressure sensors)
Lower threshold (= alarm level for insulation)
Upper threshold for optional rapid shutdown
1)
2)
5)
6)
7)
8)
9)
3)
4)
pae
kPa
120
6)
140
100
kPa
190
9)
210
170
All pressures stated are absolute pressures at 20 ┬░C
100 kPa = 1 bar
Only relevant to three position switch disconnector (ZX0)
тЙд -25 ┬░C for ZX0 without auxiliary voltage (pressure gauges without contacts instead of density sensors), we recommend: тЙд -35 ┬░C
We recommend: тЙд -15 ┬░C.
Panels with three position switch disconnector: 140 kPa
Panels with three position switch disconnector: 150 kPa
Panels with three position switch disconnector: 9.1 g / dm3
Panels with three position switch disconnector: 210 kPa
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 19
6.2 Insulating gas capacities
The insulating gas capacities stated below are maximum capacities. The actual values vary according to
the equipment fitted in the panels. The exact capacities can be found in the test records for the panels
supplied.
Table 6.2.1: Insulating gas capacities for switchgear type ZX0 block design
Panel width [mm]
400
600
Gas weight [kg]
Panel module
1.4
2.7
Table 6.2.2: Insulating gas capacities for switchgear type ZX0.2
600
(panels with three
Panel width [mm]
450
600
position switch
900
1200
disconnector and
fuses)
Gas weight [kg]
Panel module
Rated voltage: ... 24 kV
2.4
3.5
3.9
4.5
6.9
Rated voltage: ... 36 kV
-
4,0
-
5,2
8,0
Table 6.2.3: Insulating gas capacities for switchgear type ZX1.2
Top of floor topping to top of
circuit-breaker compartment [mm]
Panel width [mm]
-
1800
2 x 400
600
1)
2070
800
600
800
Gas weight [kg]
Circuit-breakercompartment
Panel depth 1300 mm
Panel depth 1500 mm
2 x 1.6
2.2
2.9
3.2
4.3
2.7
3.6
4.0
4.5
Panel depth 1800 mm
Busbar compartment
4.6
2.5
1.9
2.6
6.9
1.9
2.6
Heat sink, low (Height 210 mm)
0.3
Heat sink, high (Height 670 mm)
1.1
Table 6.2.4: Insulating gas capacities for switchgear type ZX2
Panel width [mm]
2 x 400
1)
600
800
Gas weight [kg]
Circuit-breaker-compartment
1)
2 x 2.0
3.4
4.6
Busbar compartment I
2.2
1.7
2.3
Busbar compartment II
2.2
1.7
2.3
Heat sink circuit-breaker-compartment
0.7
Heat sink busbar compartment
1.4
Double feeder panel with two outgoing feeders
20 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
6.3 Number of drying agent bags
Table 6.3.1: Number of drying agent bags for switchgear type ZX0 block design
Block design
Number of panel modules
Number of drying agent bags
1 and 2
1
3 and 4
2
5 and 6
3
Table 6.3.2: Number of drying agent bags for switchgear type ZX0.2
Panel width [mm]
450
600
900
1200
Number of drying agent bags
2
1
2
2
1)
Table 6.3.2: Number of drying agent bags for switchgear type ZX1.2
Top of floor topping to top of circuit-breaker
compartment [mm]
Panel width [mm]
2 x 400
1800
600
2)
2070
800
600
800
Number of drying agent bags
Circuit-breaker
compartment
Panel depth 1300 mm
Panel depth 1500 mm
2x2
2
2
3
3
2
2
4
4
Panel depth 1800 mm
Busbar compartment
2
1
1
5
1
1
1
Table 6.3.4: Number of drying agent bags for switchgear type ZX2
Panel width [mm]
2 x 400
2)
600
800
Number of drying agent bags
Circuit-breaker compartment
1)
2x2
4
1)
5
1)
Busbar compartment I
1
1
1
Busbar compartment II
1
1
1
2)
Maximum number; quantity dependent on equipment fitted.
Double feeder panel with two outgoing feeders
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 21
7 Sample works instructions
The sample works instructions shown are intended to serve as examples for the compilation of instructions in your company. Adjustments to national technical standards and the accident prevention regulations of the country in which the switchgear is operated might
be necessary.
22 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
Fig. 7.1: Sample work instruction, тАЬHandling of uncontaminated SF6тАЭ
Work Instruction
Works department:
Working area:
Responsible Person:
Sign
Issue date:
Work place:
Activity: Handling of uncontaminated SF6
HAZARDOUS MATERIAL DESIGNATION
Sulphur hexafluoride (SF6)
HAZARDS TO PERSONS AND THE ENVIRONMENT
Uncontaminated SF6 is odourless, tasteless, colourless and non-toxic. It contains no contaminants
which are harmful to health. On contact with liquid SF6 there is a risk of freeze burns.
SF6 is approximately five times heavier than air, and can accumulate in low-lying spaces. If a large quantity escapes into the working environment, SF6 displaces the oxygen in the air people breathe (danger
of asphyxiation). SF6 is a greenhouse gas, and emissions of SF6 are therefore to be avoided.
PROTECTIVE MEASURES AND RULES OF BEHAVIOUR
Do not discharge SF6 into the atmosphere.
Use an SF6 servicing unit with ___________ filler system.
Check the connections for gas-tightness.
Work which generates strong heat, e.g. welding, is prohibited.
Do not smoke, eat, drink or store foodstuffs in the switchgear room.
Protect your hands: Wear protective gloves to avoid physical injury and contact with
liquid gas.
PROTECTIVE ACTION AND RULES OF BEHAVIOUR
Leakage: Turn off the gas supply. Ensure that valves and connections are tight and ventilate the
room well with fresh air.
SF6 does not burn, but fire will create decomposition products. Wear protective equipment when
firefighting.
Move cylinders/equipment out of the hazard zone or cool them.
FIRST AID
For all first aid actions: Ensure that you yourself are adequately protected, and contact a doctor
immediately.
On inhalation: Provide fresh air immediately. Lay the person in an inclined position with the head
downwards, and if they have breathing problems ensure they receive medical treatment.
First Aid staff_______________________ Emergency tel.: ________________________
CORRECT DISPOSAL
Return to the manufacturer if necessary.
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 23
Fig. 7.2: Sample works instruction, тАЬHandling of contaminated SF6тАЭ
Work Instruction
Works department:
Working area:
Responsible Person:
Sign
Issue date:
Work place:
Activity: Handling of contaminated SF6
HAZARDOUS MATERIAL DESIGNATION
Sulphur hexafluoride (SF6) with decomposition products (contaminated SF6)
SF6 in electrical systems may contain decomposition products тАУ gaseous sulphur fluorides and
sulphur oxyfluorides, solid (dust-form) metal fluorides, sulphides and oxides, hydrofluorides and
sulphur dioxide тАУ as a result of arcing effects.
HAZARDS TO PERSONS AND THE ENVIRONMENT
тИТ тИТ Decomposition products can be toxic or hazardous to health on inhalation, swallowing
or contact with the skin or eyes. They can irritate the respiratory organs or skin or cause
acid burns. On inhalation of large quantities there is a risk of lung damage (pulmonary
oedema) which may only become apparent at a much later date.
тИТ тИТ On escape of gas, there is a danger of asphyxiation due to displacement of oxygen,
especially at floor level and in deeper spaces.
PROTECTIVE MEASURES AND RULES OF BEHAVIOUR
Filling, emptying or evacuation of SF6 systems:
тИТтИТ Check the condition of the SF6 (e.g. humidity, proportion of air, decomposition products).
тИТтИТ Do not discharge SF6 into the atmosphere. Use servicing equipment and check the connection for tightness after connecting.
тИТтИТ Only channel contaminated SF6 into marked SF6 pressure vessels.
тИТтИТ Work generating strong heat and smoking are prohibited in the system room.
Opening of and working on or in opened SF6 gas compartments
(additional measures; please complete and delete where not applicable)
тИТтИТ Only open SF6 gas compartments after complete emptying and equalization with atmospheric pressure.
тИТтИТ Use personal protective equipment:
Protective gloves, acid resistantDisposable goggles
Protective overalls with hoodOvershoes
Breathing mask (filter or closed-circuit type)Skin protection
Safety shoesHelmet
тИТтИТ Remove dust with industrial vacuum cleaner ______________________ .
тИТтИТ Remove adhering decomposition products with _______________________. тИТтИТ Before breaks and after work, thoroughly clean the face, neck, arms and hands with
large amounts of water.
тИТтИТ Do not store foodstuffs or smoke, eat or drink in the system room.
PROTECTIVE ACTION AND RULES OF BEHAVIOUR
On escape of gas or perception of an unpleasant, pungent odour (like rotten eggs) indicating SF6
decomposition products, immediately leave or do not enter the system room or spaces below.
Only re-enter the room after thorough ventilation or with breathing apparatus (isolating equipment
___________________).
First Aid
тИТ тИТ When decomposition products come into contact with the skin or eyes, immediately rinse
the skin with ample water,
тИТ тИТ Thoroughly rinse the eye with water, covering the unaffected eye.
тИТ тИТ Move persons with breathing difficulties out of the hazardous area into the fresh air,
ensure they rest, cover them with blankets and call in a doctor (risk of toxic pulmonary
oedema).
тИТ тИТ First Aid staff_______________________ Emergency tel.: ________________________
Correct disposal
тИТ тИТ Only dispose of decomposition products, cleaning fluids and materials, disposable
overalls and filters (e.g. from SF6 systems, maintenance units, industrial vacuum cleaners or breathing masks) in __________________________________ waste containers.
24 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
SAFETY DATA SHEET
Appendix A
(to Directive 2001/58/EG)
SULPHUR HEXAFLUORIDE
1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND OF THE COMPANY/UNDERTAKING
1.1. Identification of the substance/preparation
Product name
:
SULPHUR HEXAFLUORIDE
Chemical name :
Sulphur hexafluoride
Molecular formula:SF6
Molecular weight:146 g/mol
1.2. Use of the Substance/Preparation
Recommended use
: - Electrical industry
- Metallurgy
1.3. Company / Undertaking Identification
Adress : SOLVAY FLUOR GmbH
HANS-BOECKLER-ALLEE 20 D- 30173 HANNOVER
Tel.:+495118570
Fax:+495118572146
1.4.
Emergency and contact telephone numbers
Emergency telephone :
+44(0)208 762 8322 [CareChem 24] Europe)
E-mail-adress:[email protected]
2. HAZARDS IDENTIFICATION
Appearance:compressed liquefied gas
Colour:colourless
Odour:odourless
тИТтИТ This substance is not classified as dangerous according to Directive 67/548/EEC..
тИТтИТ Hazardous decomposition products formed under fire conditions.
тИТтИТ Gaseous hydrogen fluoride(HF)
3. COMPOSITION / INFORMATION ON INGREDIENTS
Substance name ConcentrationClassificationR-phrase(s)
(CAS-Nr./ EG-Nr./ Anhang-1
(W/W)
Sulphur hexafluoride (2551-62-4 / 219-854-2) / --
тЙе 99,9%
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 25
4. FIRST AID MEASURES
4.1. Inhalation
тИТтИТ Remove to fresh air
тИТтИТ Oxygen or artificial respiration if needed.
тИТтИТ If symptoms persist, call a physician.
4.2. Eye contact
тИТтИТ K eep eyelids open to allow evaporation of product.
тИТтИТ Rinse thoroughly with plenty of water, also under the eyelids.
тИТтИТ -If eye irritation persists, consult a specialist.
4.3. Skin contact
тИТтИТ Allow to evaporate.
тИТтИТ Rinse with lukewarm running water.
тИТтИТ If symptoms persist, call a physician.
4.4. Ingestion
тИТтИТ Not applicable
5. FIRE-FIGHTING MEASURES
5.1. Suitable extinguishing media
тИТтИТ Use extinguishing measures that are appropriate to local circumstances and the surrounding environment.
5.2. Extinguishing media which shall not be used for safety reasons
тИТтИТ None.
5.3. Special exposure hazards in a fire
тИТтИТ The product is not flammable.
тИТтИТ Heating can release hazardous gases.
5.4. Special protective measures equipment for fire-fighters
тИТтИТ Wear self-contained breathing apparatus and protective suit.
тИТтИТ Fire fighters must wear fire resistant personnel protective equipment.
тИТтИТ Wear chemical resistant oversuit
тИТтИТ Protect intervention team with a water spray as they approach the fire.
тИТтИТ Clean contaminated surface thoroughly.
5.5. Other information
тИТтИТ Approach from upwind.
тИТтИТ Evacuate personnel to safe areas.
тИТтИТ Keep containers and surroundings cool with water spray.
тИТтИТ After the fire, proceed rapidly with cleaning of surfaces exposed to the fumes in order to limit equipment damage.
26 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
6. ACCIDENTAL RELEASE MEASURES
6.1. Personal precautions
тИТтИТ Refer to protective measures listed in section 7 and 8
тИТтИТ Approach from upwind.
тИТтИТ Suppress (knock down) gases/vapours/mists with a water spray jet.
тИТтИТ Avoid spraying the leak source.
тИТтИТ Try to re-position leaking containers, to have the leak in the gaseous phase.
тИТтИТ Vapours are heavier than air and can cause suffocation by reducing oxygen available for breathing.
тИТтИТ Prevent further leakage or spillage if safe to do so.
тИТтИТ Keep away from open flames, hot surfaces and sources of ignition.
тИТтИТ K eep away from incompatible products
6.2. Environmental precautions
тИТтИТ Should not be released into the environment.
6.3. Methods for cleaning up
тИТтИТ Allow to evaporate.
тИТтИТ Prevent product from entering drains.
7. HANDLING AND STORAGE
7.1. Handling
тИТтИТ Used in closed system
тИТтИТ Use only in well-ventilated areas.
тИТтИТ Use only equipment and materials which are compatible with the product.
тИТтИТ Prevent product vapours decomposition from contacting hot spots.
тИТтИТ Never return unused material to storage receptacle.
тИТтИТ Keep away from incompatible products
тИТтИТ Keep away from heat.
7.2. Storage
тИТтИТ Keep in a cool, well-ventilated place.
тИТтИТ Keep away from heat and sources of ignition.
тИТтИТ Keep container tightly closed.
тИТтИТ Store in original container.
тИТтИТ Keep away from Incompatible products.
7.3. Special use(s)
тИТтИТ For further information, please contact: Supplier
7.4. Packaging material
тИТтИТ Steel drum
7.5. Other precautions
тИТтИТ Refer to protective measures listed in sections 7 and 8.
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 27
8. EXPOSURE CONTROLS / PERSONAL PROTECTION
8.1. Exposure Limit values
Sulphur hexafluoride
тИТтИТ UK. EH40 Workplace Exposure Limits (WELs) 2005
time weighted average = 1,000 ppm
time weighted average = 6,070 mg / m3
тИТтИТ UK. EH40 Workplace Exposure Limits (WELs) 2005
Short term exposure limits = 1,250 ppm
Short term exposure limits = 7,590 mg / m3
тИТтИТ US. ACGIH Threshold Limit Values 01.2006
time weighted average = 1,000 ppm
8.2. Exposure controls
тИТтИТ Provide appropriate exhaust ventilation at machinery.
тИТтИТ Apply technical measures to comply with the occupational exposure limits.
тИТтИТ Refer to protective measures listed in sections 7 and 8.
8.2.1. Occupational exposure controls
8.2.1.1. Respiratory protection
тИТтИТ Self-contained breathing apparatus in medium confinement/insufficient oxygen/ in case of large
uncontrolled emissions/in all circumstances when the mask and cartridge do not give adequate
protection.
тИТтИТ Use only respiratory protection that conforms to international/ national standards.
тИТтИТ In the case of vapour formation use a respirator with an approved filter.
8.2.1.2. Hand protection
тИТтИТ Take note of the information given by the producer concerning permeability and break through times, and of special workplace conditions (mechanical strain, duration of contact).
тИТтИТ Protective gloves
тИТтИТ Heat insulating gloves
тИТтИТ Suitable Material : PVC, Neoprene, Natural Rubber
8.2.1.3. Eye protection
тИТтИТ Chemical resistant goggles must be worn.
тИТтИТ If splashes are likely to occur, wear:
тИТтИТ Face-shield
8.2.1.4. Skin and body protection
тИТтИТ Wear suitable protective clothing.
тИТтИТ In case of contact through splashing:
тИТтИТ Apron
тИТтИТ Boots
тИТтИТ Neoprene
8.2.1.5. Hygiene measures
тИТтИТ Use only in an area equipped with a safety shower.
тИТтИТ Eye wash bottle with pure water
тИТтИТ When using do not eat, drink or smoke.
тИТтИТ Gloves, overalls and boots have to be double layered (protection against cold temperature).
тИТтИТ Handle in accordance with good industrial hygiene and safety practice.
8.2.2. Environmental exposure controls
тИТтИТ Dispose of rinse water in accordance with local and national regulations.
28 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
9. PHYSICAL AND CHEMICAL PROPERTIES
9.1. General information (appearance, odour)
Form :
Compressed liquefied gas
Colour :
colourless
Odour : odourless
9.2. Important health, safety and environment information
pH : Remarks: neutral
Boiling point/boiling range :
-63,8 ┬░C
Remarks: Sublimation point
Flash point::
Remarks: does not flash
Flammability: Remarks: This product is not flammable.
Explosive properties :
Explosion danger:
Remarks: See section 10
Oxidizing properties
:
Remarks: Non oxidizer
Vapour pressure: 21.4 bar
Temperature: 20 ┬░C
: 37.1 bar
Temperature: 45 ┬░C
Relative Density / Density:1.56
Solubility :
Water
0.04 g / l
Remarks: slightly soluble
Temperature: 20 ┬░C
:Alcohol
:Ether
Partition coefficient
log P o/w
n-octanol/water :
1.68
Vapour density (air = 1) :
5.1
9.3. Other data
Freezing point :
-50.8 ┬░C
Decomposition temperature
200 ┬░C
Remarks: Decomposition under influence of moisture is highly accelerated by heating. 800 ┬░C
Remarks: Dry air
10. STABILITY AND REACTIVITY
10.1. Stability
тИТтИТStable under recommended storage conditions.
тИТтИТVapours are heavier than air and may spread along floors.
тИТтИТHazardous Polymerisation/Polymerization: no
10.2. Conditions to avoid
тИТтИТHeat
10.3. Materials to avoid
тИТтИТOxidizing agents
10.4. Hazardous decomposition products
тИТтИТGaseous hydrogen fluoride (HF)., Sulphur dioxide, Sulphur compounds
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 29
11. TOXICOLOGICAL INFORMATION
11.1. Toxicological data
Acute inhalation toxicity
тИТтИТ NOEC, 24 h, rat, > 4.777 g / l
Acute dermal toxicity
тИТтИТ LC50, Remarks: not applicable
Skin irritation
тИТ тИТ Rat, no skin irritation
Eye irritation
тИТ тИТ Rat, no eye irritation
Sensitisation
тИТ тИТ No data available
Irritation (other route)
тИТ тИТ No irritation signs noted during toxicity testing.
Chronic toxicity
тИТ тИТ Inhalation, Prolonged exposure, Human experience, no observed effects
Genetic toxicity in vitro
тИТ тИТ In vitro tests did not show mutagenic effects
Possible hazards (summary)
тИТ тИТ Health injuries are not known or expected under normal use
11.2. Health Effects
Inhalation
тИТ тИТ Symptoms: narcosis.
тИТ тИТ (in case of higher concentration): Asphyxia.
Eye contact
тИТ тИТ gas
тИТ тИТ Irritation
тИТ тИТ Liquefied gas
тИТ тИТ Severe eye irritation
тИТ тИТ Lachrymation
тИТ тИТ Redness
тИТ тИТ Swelling of tissue
тИТ тИТ Frostbite
тИТ тИТ Causes burns
Skin contact
тИТ тИТ Gas
тИТ тИТ None
тИТ тИТ Liquefied gas
тИТ тИТ Cold sensation followed by redness of the skin.
тИТ тИТ Frostbite.
тИТ тИТ Prolonged skin contact may defat the skin and produce dermatitis
Ingestion
тИТ тИТ gas
тИТ тИТ not applicable
30 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
12. ECOLOGICAL INFORMATION
12.1. Ecotoxicity
Acute toxicity
тИТтИТ Remarks: no data available
12.2. Mobility
тИТтИТ Air, HenryтАЩs law constant (H) = 452 kPa . m3 / mol
Conditions: calculated value
Remarks: considerable volatility
тИТтИТ Soil/sediments
Remarks: Non-significant adsorption.
тИТтИТ Water, Evaporates, t 1/2 = 3.5 h
Conditions: calculated value
12.3. Persistence and degradability
Abiotic degradation
тИТтИТ Air, t 1/2 > 1000 years
Result: not significant photolysis
тИТтИТ Water/soil, t 1/2 > 1000 years
Result: Non significant hydrolysis
Biodegradation
The methods for determining biodegradability are not applicable to inorganic substances.
тИТRemarks:
тИТ
12.4. Bioaccumulative potential
тИТтИТ Bioconcentration: Bioconcentration factor (BCF) = 89
Remarks: Calculated value
12.5. Other adverse effects
тИТтИТ Global Warming Potential
= 23,900
Remarks: GWP (ITH 100 y), Source IPCC (International Panel on Climate Change)
12.6. Possible hazards (summary)
тИТтИТ This product has no known eco-toxicological effects.
тИТтИТ Product is persistent in air.
тИТтИТ Other dangerous properties can not be excluded.
13. DISPOSAL CONSIDERATIONS
13.1. Waste from residues / unused products
тИТтИТ In accordance with local and national regulations.
тИТтИТ Refer to manufacturer/supplier for information on recovery/recycling.
13.2. Packaging treatment
тИТтИТ To avoid treatments, as far as possible, use dedicated containers.
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 31
14. TRANSPORT INFORMATION
UN-Number1080
IATA-DGR
Class2,2
ICAO-LabelsNON-FLAMMABLE COMPRESSED GAS
Proper shipping name: SULPHUR HEXAFLUORIDE
IMDG
Class2,2
IMDG-labelsNON-FLAMMABLE COMPRESSED GAS
HI/UN-No.1080
EmS:F-C,S-V
Proper shipping name: SULPHUR HEXAFLUORIDE
ADR
Class2
ADR/RID-Labels2,2
HI/UN-Nr.20/1080
Proper shipping name: SULPHUR HEXAFLUORIDE
15. REGULATORY INFORMATION
15.1. EG-Label
тИТтИТ This substance is not classified as dangerous according to Directive 67/548/EEC.
15.2 Inventory Informations
Australian Inventory of Chemical Sustances
: - In compliance with inventory
Canadian Domestic SubstancesList (DSL)
: - In compliance with inventory
Inventory of Existing Chemical Substances (China)(IECS)
: - In compliance with inventory
Japan (ENCS) List (ENCS((JP))
: - In compliance with inventory
New Zealand Single ComponentSub. List (NZ CLSC)
: - In compliance with inventory
Toxic Substance Control Act -Liste (TSCA)
: - In compliance with inventory
Liste der EU-Altstoffe (EINECS)
: - In compliance with inventory
Korea Existing Chemicals Inv. (KECI) (KECI(KR))
: - In compliance with inventory
Philippines PICCS (PICCS (PH))
: - In compliance with inventory
15.3. Other regulations
тИТтИТ European Waste Catalogue, Decision (2000/532/EC), Hazardous waste, Waste codes should be assigned by the user
based on the application for which the product was used.
32 | Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04
16. OTHER DETAILS
16.1. Administrative information
тИТтИТGeneral revision
тИТтИТDistribute new edition to clients
This SDS is only intended for the indicated country to which it is applicable. The European SDS format compliant with the applicable
European legislation is not intended for use nor distribution in countries outside the European Union with the exception of Norway and
Switzerland. Safety data sheets applicable in other countries/regions are available upon request. The information given corresponds
to the current state of our knowledge and experience of the product, and is not exhaustive. This applies to product which conforms
to the specification, unless otherwise stated. In this case of combinations and mixtures one must make sure that no new dangers can
arise. In any case, the user is not exempt from observing all legal, administrative and regulatory procedures relating to the product,
personal hygiene, and protection of human welfare and the environment.
Manual: Use of SF6 insulating gas in ZX-switchgear HB 605 en - Revision 04 | 33
For your notesтАж
Contact us
┬й Copyright ABB. 1VBA 680 605 P0102 (12.2014- ABB)
Note: We reserve the right to make technical changes or
modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars
shall prevail. ABB AG does not accept any responsibility
whatsoever for potential errors or possible lack of information
in this document.
We reserve all rights in this document and in the subject matter
and illustrations contained therein. Any reproduction, disclosure to
third parties or utilization of its contents - in whole or in parts - is
forbidden without prior written consent of ABB AG.
Copyright┬й 2010 ABB
All rights reserved
Your sales contact: www.abb.com/contacts
More product information: www.abb.com/productguide