AEG SF6 User manual

Opl rating instructions~lo. 127 B
Type 51-145 Fl/4(131/5R
with spring operating mechanism eRR 5

part A:
part B:
part C:
Erection and commissioning
Inspection, maintenance and reconditioning
General description
The three parts ~re bound separately. Parts A and Bare circuit-
breaker specifi I: whereas part Cis val id for the whole AEG
circuit-breaker ~eneration Sl F (SF6 circuit-breaker with spring
operating mechanism).
The SF6 circuit:breakers type Sl F have been designed for low
ma intenance and long maintenance interv a 1 s. However, adequate
care and adhere1ce to these instructions in this manual will
ensure the reliability of the circuit-breaker.
It is impossibh to consider every eventuality which might occur
during operation of a mechanical device. Therefore, kindly
contact yo~) ~0 al AEG agency in r~se you have any queries which
have not been i'cluded in this manual.
AEG reserves the right to alter these instructions if
necessitated by ongoing development of the breaker.
From the statenltmts, figures and descriptions no claims can be
asserted.
Errors and omis~ions excepted
-.
No part of this manual may be reproduced or copied by any means_
nor transmitted to a third party without the written permission
of AEG.

Par-t
B:
1
2
2.1
2.2
2.3
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.8.1
3.8.2
3.8.3
3.9
3.9.1
3.9.2
3.9.3
3.10
3.10.1
3.10.2
4
4.1
4.2
4.3
4.3 1
4.3,2
4.3,3
Survey of the Inspection-, Maintenance- and Reconditioning Works
Inspection
Maintenance
Reconditioning
Notes for the W:irks to be performed
Safety Precaut i:>ns
Cbeck of the AnI i-Condensation Heating
Functional Chec~-of the Electrical Control Circuits
Measurement of the Operating Times
Check of the SF~ Gas Quality
Measurement of the Resistance of the Main Circuit
Check of the Bolt Connections
Replacement of 1he Arcing Contacts
Preliminary Remr.rks
;--,::-isions
Procedure
Disassembling ol a Complete Pole Column
Preliminary Remr.rks
Provisions
Procedure
Cleaning, Greasing and Lubricating of the Operating Mechanism
Preliminary Remr.rks
Replacement of farts
Lubrication and Greasing
Designation.of .ubricants
Application of ~ubricants
Points of Lubrication
Pole Column
Base Frame
Linkage

5
5.1
5.2
6
6.1
6.2
6.3
I
II
III
Control System
SF6 Gas Supply
Revision Set
Overpressure Safet~' Device
Spare Parts and Accessories
Handling of SF6 Gas
Permissible Number of Short-Circuit Operations
List of Figures and Tables

The maintenance arid reconditioning works recommended include only
those parts that ar'e <:;Ilhjert to wear and tear and aging
The crucial variables influencing the condition of the breaker are:
number of short circuit interruptions
number of switcring operations
time in service
TheAEG maintenance program takes these variables into consideration
by .offering suitable inspection, maintenance and reconditioning
intervals.
Maintenance and reconditioning should be carried out according to
the following guidelines.
When equipment is operated in extreme ambient conditions, it is
advisable to shorten the inspection and maintenance intervals.
Such-conditions are the following:
permanent high ambient temperature
abrasive dust in the atmosphere
high dust content atmosphere
permanent high humidity
corrosive gas or vapors in the atmosphere
Due to the use of highly stable grease resp. dry self-lubricating
friction component~; the spring operating mechanisms do not require
any maintenance unlder normal conditions.
Maintenance and reconditioning should preferably be carried out by-
AEG specialists.
Service personnel (an be thoroughly trained on the job in .courses
offered by AEG.

occasionally visual inspection at
1ate-st after six years.
Regipnpl standards may shorten the
intervals.
after 12 and 24 years
after 2.000 CO-operations at rated
nonnal current or: ¢
after a summarized current
according to appendix II
2.1 Inspection
To be carried by'Erained staff. Adopt the relevant safety
precautions. An openii 19 of the pole columns is not necessary.
Check for corrosiol on
metallic parts ant pipings
- Check the ventilation apertures
- Check of the anti-:ondensation
heating
-•..
at the base frame and at the
cubicle
the SF6 density monitor in
the green range

To be carried out ly trained staff or AEG specialists. Take the
drCldt-breaker out of serv~ce. an nr
1
':,ning of the pole c~::. m:1s i$
not necessary.
fixed inside the operating
mechanism cubic'le
Check of the securing elements
of the linkage
- Functional check of the
electrical control circuits
- Measurement of tile operating
times
chapter 3.5
chapter 3.6- Measurement of t~le res i stance
of the main circllit
2.3 econditioning
To be carried out by trained staff or AEG specialists. Take the
circuit-o-reaker out of service, an opening of the pole columns is-
necessary.

Mandatory:
Isolate the breakel'.
The. position indicctor of th-e closing spring shows "discharged".
Earth both sides of the breaker as specified in the relevant
standards.
Disconnect supply clnd motor voltage. (For the works described in
the chapters 3.2, :1.3,3.4 the voltages are still necessary).
Mind the relevant :;afety regulations.
When opening a po' e column, pump the SF6 gas in a service unit
and evacuate the cl)lumns. Then ventilate the pole columns.
When opening a pole cl)lumn. proceed as follows:
Wear rubber gloves, protective clothing, gas mask and breathing
eouip'11ent during (I )ening and cleaning.
Remove decompos it i on products immediate ly after havi ng opened the
breaker (pole) or Iny subassembly.
Wipe off decompos~tion products with a piece of cloth or use a
vacuum cleaner.
Do not agitate declmposition products unnecessarily.
Neutral'ize deposits (arc products), adsorption filter and used -
cloth with a 3 %;oda solution for 24 hours, or dispose of as
harmful substance~:,.

3.2 Check of the Anti-Condensation Heating
Check the proper function of the anti-condensation heating within
the cubicle (see figure 84).
3.3,' Functi ona1 Check o [ the Electri ca1 Control Circui ts
Perform one CL.05E- and one OPEN-operation.
3.4i Measurement of theJlP.erating Times
Take the operating times on one CLOSE- and one OPEN-operation at
rated supply voltage.
The values have to correspond to those given in the routine test-
cert ificate.
The opening time is the time from energizing the opening release to
contact separation.
The closing time is the time from energizing the closing release to
contact touch.
3.5 Check of the SF6 GIS Quality
Check the gas qual il:ywith respect to the water content, SF6 content
and acidity. Use tre devices mentioned in chapter 6.3, pos. 9, 11
and 18. .
Nominal value (dew point):
Nominal value (SF6 content):
Nominal ·value (acidity):
-10°C at nominal pressure.
> 98 %
~ 10 ppm
Measure at the hv-t:~rminals directly. The values have to correspond
to those given in the routine test-certificate.

Check for the corre:t tightening torque on all accessible bolt
connections.
5 t Y'f.'ngth
I
8.8
.A2-70
A2-80
I
.
grade
I
I I
~ .'---'_.---- --------.,.-··:------1-----------------: --------------.~-~-
Nm ··:tlb
I
Nm ftlb
I
Nm ftlb
I I
I
I
iI
M6 10 7.4
I
10 ).4
I
13.7 10.1
I
I
M8 24.8 :.8.3
I
24.8 18.3
I
33 24.4
I I
MIO 49 ]6 : -""49 36
I
65 48
I
M12 86 li3
I
83
61
I
110 81
I
I
M16 210 :.55
I
202 149
I
270 200
I I
M20 410 ]03
I
394 291
I
525 388
I
I
M24 710 i25
I
377 278
I
I I
Table 84:
Tighteninq torques for bolts and nuts
This chapter descril:es the replacement of the arcing contacts as
required in table 83. Chapter 3.9 describes the disassembling of the
complete pole column.
Replace the arcing CJntacts in closed, dry and undusty rooms only.
Do not replace the I:rcing contacts in the substation in inclement
weather conditions or in windy conditions.
Clean all funct i ona'l elements with a pi ece of cloth that has been
soaked in a 1coho 1. and grease accord ing to the greas i ng
instructi.<:ns. Replac~ parts when necessary.
If bolt connections have been unscrewed during work, replace the
securing elements.

Always use new elastomer gaskets when assembling.
The adsorpt ion fiHer must be rep 1aced whenever a pole column has
been opened.
1
Torque wrench 30 - 150 Nm
2.0 kg
1278 793 1
2
Wrench for fixed arcing 0.5 kg 1915 617 1
contact
3
Revision set 26.0 kg
1 360 943 1
4
Assembling tOJl
0.5 kg
1 915 622 1
Table 85: Tools for the replacement of the arcing contacts
b) accessories
Item De~ignation
1
CRC anti-corrlsion spray
0.5 kg
1 061 830 1
2
Loctite green
1 271 250 10
cm
3
1 250 770 250
cm3
3
Loct ite blue 1 271 249 10
cm3
1 250 782 250
cm3
4
Scotch abrasi Ie pad 1 260 765 10
m x 100 mm
5
Cleaning a1ccilol 1 242 244 5 1

1.1.02 **
L 1.03· *-it.
1.1.04 **
1.1.05
1.1.07
1.1.08
1.1.09
1.1.10
1.3
1.4
1. 5.03
1.5.04
1.8.02
1.8.04
1.8.36
1.10
[107] ***
[108] ***
[109] ***
Fixed arcing
Mai n cont:.ct
Main contc,ct
PTFE-shield
Bolt
Thrust pif'ce
Main contc,ct segment (lower)
Main contc,ct clamping ring (lower)
Interrupt'E'runit complete
Chamber pl('rcelaingaskets
Guide strip PTFE
Guide strip PTFE
Locking pin
Filter cartridge
O-ring
Set of eXf,ansion bolts, camp 1ete
Pin
Bolt M6xH,
Sleeve
contact
S",nm~n+ {. "',n",
co,'
. -::1-"_ •. "". "", ;..<Iltl'r _.• j -
clamping ring (upper)
Rep 1acement not re quired. On 1y after heavy duty performed
** Special tools required
*** These parts are shown in fig. All, part A
Table 87: Spare part~, list for the replacement of the arcing
contacts
For detailed figures refer to part A of the operating
instructions,
- Breaker,;..in end-pas' tion OFF.
- Closing spring "di~,charged".
- Store the SF6 gas in a service unit and evacuate the columns.
Then ventilate the pole columns.
- Disconnect the SF6 piping at poles A, Band C at the crank cases.
- Disconnect the lin.age between pole columns and spring operating
mechanism.
- Fix a rope to the upper HV-terminals (fig.1, 1.9) of the pole
columns.

- Undo the four fCl;tening bolts of the crank case.
- Lift the pole columns, transport to the workshop and mount them
on an assembling trestle in upright position.
b) Change of the ard ng contacts
- . Loosen the expan~ion bolts at the fixed contact (1.1) and proceed
as described in ,:hapter 6.2.
- Lift the fixed ccntact up~ards out of chamber porcelain, place it
on a dry pad, c 11 ~an the surfaces and remove any adheri ng decom-
pos it i on product:;.
- Replace the fixE d arcing contact (1.1.02).
- Undo the bolts of the upper flange of the support porcelain (1.6)
(see figure 81, item 8).
- Lift the chamber porcelain, place it on a dry pad and clean the
inner surfaces f"om any decomposition products.
- .Uncoup1e the COII[P 1ete interrupter uni t (1. 3) by 1ooseni ng the
locking pin (1.8.02) (see figure 81, item 0). Use the assembling
tool mentioned ill table 85.
Pullout the comf1lete interrupter unit (for disassembl ing of the
complete pole columns proceed as described in chapter 3.9.3).
- Mnunt a new interrupter unit in the lower support for cont?ft
(~5) and couph W;;.ri a locking pin. Use the assemL:ihg ~JHl
mentioned in tab e 85.
. -
- Mount the chamber porcelain, fasten the bolts and tighten with
83 Nm.--
When mounting the fixed contact on the chamber porcelain, the
contact has to be positioned with respect to the interrupter unit.

- Move the interrupter unit in end-position ON.
- Position the fixed contact in the interrupter unit.
- Fasten the fixed contact by expansion bolts (chapter 6.2).
Replace the adsorption filter (see figure B2)
- Undo the cover (1.B 21) and p-ull out the filter housing (1.8.05).
- Remove used filter cartridge (1.8.04) from the filter housing,
insert a new cartridge and replace a complete filter housing.
- Mount the cover (L8.21) and fasten the bolts with.>10 Nm.
- Couple the linkage
- Connect the SF6 piping at poles A, Band C.
- Evacuate the breaker, top up with SF6 to the rated pressure and
put ..:itinto operat Lon. (The procedure is described in part A,
chapter 4.)
- Check all flange-ccnnections opened and the SF6 piping by a SF6
leak detector.

A)
B)
1.1 I. I. 07 1.1.08
1. 10
1.9
I~M
f
, I
"
:,
1. 1.05
:.
:,
1. 1. 03
"
t,
C)
I
1.5.02
:,
1. 1.04 "
i
1. 1.02 ~:/C)
i
1.5.03
"i
"
i
1.5.04
1.3
;.
::/B)
I
1.2 "i1.3
.
1. 1.09 "1.5.06
~~
I
1.1.10
. i
1.5
i
1.4 i1.5.04
1.5
I
1.5.05
I
1.8.29
D)
1.8.28
1.8.02
1.6 1.8.26
1.8.30
1.3.07
1.7
/F)
1.8.27
:s
1.8.39
:)
1.8.02
1.8.28
1.8 1.8.29
E)
F>
2x M8 8x M12
8x ;13

Item A: Disassemblinq of the fixed contact (Ll)
(see chapter 6.2)
Item B: Disassemblinp of the chamber porcelain (1.2)
- 8 bolts Ml;~ / 8 washers cj) 13'
~
- Interruptel' unit
- Lower support for contact
- Guide strip PTFE
- Guide strip PTFE
1.3
1..5
1.5.03
1.5.04
- Connecting tube
- Locking pirl
- Nut
- Connection
- Thrust pi ec:e MlO
- Cap nut
- Cannetion
- Pi n
- Sleeve
1.3.07
1.8.02
1.8.26
1.8.27
1.8.28
1.8.29
1.8.30
1.8.38
1.8.39
Item F: Disassemblin~1 of the support porcelain (1.6)
- 8 bolts Ml;~ / 8 washers cj) 13

Torque wrench 150 - 650 Nm 3.0 kg
Wrench for thE~
threaded insert 4.0 kg
b) Accessories (see chapter 3.8)
c) Spare parts (reqLired in addition to 3.8.2)
1.7
1.8.15
1.8.33
1.8.35
1.8.36
Suppcrt porcelain gasket
O-rirg
Pin
O-rirg
O-rirg
This 1 :s:t.de•.·. not take into a~c.uunt the replacement of separate
parts (e.g. contacts, insulating rod etc.).
Table 89: Spare parts list for disassembling the complete pole
column
Procedure
Proceed as described in the chapter II renewa 1 of the arcing-
contacts", up to:
Pullout the complete interrupter unit.
- Remove the lower support of contact (1.5, figure Bl, item E).
- Undo the support )orcelain (1.6) at the lower flange (figure B1,
item F) and 1ift it off. --
Undo the threaded insert (1.8.03) of the opening spring (1.8.06,
figure 82). Use the special wrench.
- Remove the opening spring from the crank case.

- Remove the filter housing (1.8.05).
- Dismount the shaH (1.8.19) by pulling off the cover shaft
(1.8.16) and the "nsert (1.8.25) with the outer part of the
needle bearing (1.E.13). Pullout the shaft with the inner ring
of the needle.bea~ing~
- Withdraw the camp"ete assembly of "insulating rod (1.8.07),
spring seat (1.8.09) and lever (1.8.10)" upwards out of the crank
case.
- Loosen the pin (1.:~,_.33) and disassemble completely.
- Clean all parts fnm all decomposition products, check and, if
necessary, replace the parts.
~ b~ ~~~ing instructi~:~s _c~_.~}.r contact and jointing surfaces.a~'r "f,;t<
as for static and dynamic gaskets.
- Replace a11 gasket~,.
- Tighten the threadll d insert with 80 Nm.
- Replace the sleeve (1.8.01) when coupling.
- Replace"'-three guicll~ strips PTFE for the interrupter unit (fig._
Bl, item C).
The mounting of the pille columns is described in detail in part A,
chapter 3.6 to 3.10.

--"""=====1
1.8.26 _""" "
1.8.30- .
1.8.27 iJt
1.8.39--- _
1.8.02======== :===== .'
" 1,8 ..7 l __ -'
1.8.29-------
1.8.03 el~
1.8.07---. --'"
1.8.04
1.8.05
1.8.06
1.8.32
1.8.31
1.8.01
1.8.08 S
1.8.34----~
1.8.33----:=:==::
1.8.09:::=--::::
1.8.10::::--------
1.8.11
1.8.22
1.8.23
1.8.12
1.8.24
1.8.35
1.8.36
1.8.13
1.8.25
U116- "
1.8.15-' - J
1.8.19
:lID J-- -~.:. ~-L ""
· I
· ""l i
· i 1.8.36
I:~ 1.8.17
:'~ 1.8.18
..
\
i 8.17 1.8.18
Fig. 82:
Crank casl~
Crank case compll te 1.8 - Shaft 1.8.19
Sleeve 1.8.01 - O-ring 1.8.20
Lock i.c.gpin 1.8.02 - Cover 1.8.21
Threaded insert 1.8.03 Sleeve 1.8.22
Filter cartridge 1.8.04 Gasket 1.8.23
Filter housing 1.8.05 - Gasket 1.8.24
-
Opening spring 1.8.06 - Insert 1.8.25
Insulating rod 1.8.07 - Nut 1.8.26
Locking pin 1.8.08 - Connection 1.8.27
Spring seat 1.8.09 - Connection 1.8.30
Lever, interna 1 1.8·.19 - SF6 coupling 1.8.31
Crank case 1.8.11 - O-ring 13.95x2,62 B 1.8.32
Ball bearing 1.8.12 - Pin 1.8.33
Needle bearing 1.8.13 - Connection 1.8.34
-
O-ring 50.39x3.~I:~C 1.8.15 - O-ring 62.87x5.33 C1.8.35
-
Cover shaft 1.8.16 - O-ring 78.74x5.33 B 1.8.36
Bolt M6 x 25 1.8.17 - Bearingp 1ate 1.8.37
-Washer
1.8.18
- Sleeve
1.8.39

;'\tnormal ambient cOfli1itions the spring op_erating mechanic:m dnes not
.require any greasing. At extreme ambient conditions the points indi-
'cated by the symbol (I. on the exploded view B3 should be lubricated.
Not.e:
Ensure that the olening spring is'udischarged
ll
- Before lubricatin~ disassemble the cabinet.
Lubricate all pdrts carefully. The reassembled parts should be
greased by using a highly stable grease (ASEL SYLITEA 4-018;
DIN 51825 T2-KTCLE H, see chapter 4.2).
--