con cámaras de extinción de arco en vacío
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Vacuum load-break sw it ch
Hochspannungstechnik Peters & Thieding GmbH
V
Peters
Hochspannungstechnik GmbH
Thieding&
AllgemeineElektroenergieanlagen
Deutschland
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The vacuu m loa d-brea k sw itch LTV is a mu lti-purp ose d iscon ne cto r sw itch o f class E 3,
i .e. it req uires low ma intena nce and h as the capa bility to interrupt higher rat ed cur-
rents an d to close more freq uent ly on short-circuit conditions.
It is a t og gle load -brea k sw itch w ith inte gra ted vacuum inte rrupting cham ber.
The simple, robu st structure a nd t he reliable a rc interrupt ing principle achieve a w ide
range of applications.
The product range comprises load-break switches for the following voltage levelsand rated currents:
12 kV 630 A (1250 A in prepa ra t ion)
24 kV in prepa ra t ion
The load-break switch is available in different versions:
Loa d-brea k sw itch w ith to gg le spring mechanism
Loa d-brea k sw itch w ith to gg le spring mechanism a nd ea rthing switch
Loa d-brea k sw itch w ith sto red en ergy mecha nism
Loa d-brea k sw itch w ith sto red energ y mecha nism a nd ea rthing sw itch
Loa d-brea k sw itch w ith stored energ y mechanism a nd HRC-fuse terminals
Loa d-brea k sw itch w ith stored energ y mechanism, ea rthing sw itch a nd HRC-fuse
terminals
Advantages
excellent electrica l chara cteristics (cla ss E 3), t hus o pera to r saf et y a chieved
no open arc occurs, thus neither t herma l stress (cont act b urn-off ) nor ga semmissions
no blow ing o f t he a rc necessary, thus simple me chanical structure an d reliable
switching o f small current s a chieved
low maintena nce, long lifetime
simple operation because of reduced w eight , low operating t orque a nd a ngle
comp lies w ith t he la t est sta nd a rd IEC 60265-1, 1998
OVERVIEW
2
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T ECHN ICAL DATA
3
Standards: IEC 60265-1 (1998), VDE 0670 Pa rt 301 (1999)
IEC 60694 (1996), VDE 0670 Pa rt 1000 (1998)
IEC 60420 (1993), VDE 0670 Pa rt 303 (1994)
IEC 60129 (1994), VDE 0670 Pa rt 2 (1998)
Electrical Data:
Rat ed voltag e (Ur) kV 12
Rat ed current (Ir) A 630
Rat ed short-time w ithsta nd current (IK) kA 25
Ra te d short -circuit d ura tion (t K) s 3
Rated peak withstand current (Ip) kA 63
Ra te d sho rt-circuit m a king current (Ima ) kV 50 (631))
Rat ed ligh tning impulse w ithsta nd voltag e 1,2/50µs kV 75/85
Ra t ed pow er-f req uency w ithst a nd vo lt a g e kV 28/32
Rat ed f reque ncy (f r) Hz 50/60
Rat ed m ainly active loa d b reaking current (I1) A 630
Rat ed closed loop brea king current (I2a
) A 630
Rat ed cable-charging brea king current (I4a ) A 50 (100)
Rat ed line-charging brea king current (I4b ) A 10
Rat ed e art h-fa ult breaking current (I6a ) A 160
Rat ed cable- an d line-cha rging brea king
current unde r ea rth-fa ult conditions (I6b )A 100
Eart hing sw itch (witho ut f use t erminals)
Rat ed short-time w ithsta nd current (IK) kA 25
Ra te s sho rt-circuit d ura tion (t K) s 3
Ra te d sho rt-circuit m a king current (Ima ) kA 63Cla ss B
Eart hing sw itch (w ith fu se t erminals)
Rat ed short-time w ithsta nd current (IK) kA 10
Ra te s sho rt-circuit d ura tion (t K) s 1
Ra te d sho rt-circuit m a king current (Ima ) kA 25
Cla ss B1) in cla ss E 2
Type tests: Dielectric pow er-freq uency and lightn ing impulse voltag e w ithsta nd t ests
Short-time an d pea k w ithsta nd current t ests
Making a nd brea king tests, test dut ies 1, 2a, 4a , 4b, 6a, 6b
Loa d-break sw itch-fuse-comb inat ion: te st dut ies 1, 4 und 5
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CONSTRUCTION
4
LTV 12 kV w ith stor ed energy m echanism,
fu se term inals and earth ing switch
The t hree po les of the LTV vacuum loa d-brea k sw itch a re mou nte d o n a ba se
fra me b y cast resin pin-type insulato rs a rrang ed in steps.
The cont a cts a re almost vertica l wh en op en, thus a sma ll insta lla tion d epth
is a chieved. Betw een th e conta ct blade s of ea ch pole there is the a rc inter-
rupting de vice with a uxilia ry cont a ct and a f ully encapsula ted vacuum inte r-
rupting chamb er.
This vacuum cha mbe r is a d evelopment of Peters & Thieding a nd is ma nu-
fa ctured t here as w ell. It consists of a f ixed a nd a moving contact , sealed b y
bellow s.
Vacuum chamber
LTV 12 kV w ith tog gle spring mechanism and earthin g sw itch
Fixed contact Moving contact
Contact blades
Curve plate
Draw-back springs
Interlock slide
Earthing contact
Earthing switchInterrupting device
Making contact
Wing
Actuating journal load-break switch
Stored energy drive mechanism
Actuating journal earthing switch
HRC-fuse
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FUNCTION
5
Figure 1: The sw itch is closed. The cont a ct blad es (1) a nd t he inte rrupting
de vice (2) a re con necte d t o t he m a king cont a ct (3). The cont a cts
inside of the vacuum cha mber (4) are closed a nd pressed t og eth er
by a spring inside of the chambe r enclosure.
Figure 2: The o pening procedu re beg ins. The m a in con ta ct ope ns. The
interrupting de vice is held on to the ma king conta ct b y a ho ok (5).
The current commut a te s to t he interrupt ing pa th . The ma in
contact continues opening. At a particular contact distance the
curve plat e (6) beg ins to push t he g uide bo lts (7) out w ard s and theherew ith conn ected conta cts inside of the vacuum cha mber open .
An a rc occurs in the vacuum cha mb er.
Figure 3: The conta cts inside of t he vacuum cha mber reach the ir ma xima l
distan ce. The a rc exting uishes an d t he current is interrupt ed . The
cont a cts are held in the m aximal dista nce by the curve plate .
Figure 4: During the further opening movement of the ma in conta ct the
release catch (8) reaches the end of the hook, the interrupting
device is relea sed a nd lea ves the ma king cont act.
Figure 5: The interrupting d evice is dra w n ba ck by the d raw -ba ck spring s
(9). The curve pla te a voids an immed iat e closing o f t he cont a cts
inside of the vacuum chamber after the release, but ensures a
w ay-dependent closing movement.
Figure 6: The ma in cont act ha s reached its final OFF-position a nd the inter-
rupting d evice is sw iveled ba ck bet w een t he cont act b lades. The
contacts inside of the vacuum chamber are closed again and the
sw itch is rea dy f or reclosing.
Figu re 1
Figu re 3
Figu re 4
Figu re 5
Figu re 2
Fixed contact
Release catch (8)
Swivel bearing
Enclosure with vacuum chamber
Guide bolt (7)
Figu re 6 Interrupt ing device (wi t hout outer encapsulat ion)
4
3
2
5
6
7
8
9
1
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DESCRIPTION
6
Drive mechanismThe LTV is a vai lab le in tw o varian ts: w ith t og g le spring
mechan ism a nd w ith sto red energ y mecha nism by spring s fo r
stora ge of the en ergy for opening. The stored energy mecha-
nism is charged during the closing operation of the switch,
thus a separa te cha rging o perat ion is not necessa ry.
OperationThe sw itch is f itte d w ith a 30 mm d ia. a ctua ting journa l, 90°for right hand or lef t hand mechanisms. Operating of the
sw itch can b e ef fected w ith a doub le-rod, bevel gear o r f lex-
ba ll mecha nism. For remote operat ion a gea red moto r w ith
emergency manua l operat ion in combinat ion w ith a doub le-
rod drive is ava ila ble.
Earthing switchBelow th e LTV a q uick-ma king ea rth ing swit ch type PTE can
be insta l led. I t is mecha nica l ly int erlocked w ith th e loa d-brea k sw itch by a n interlock slide . The slide ca n be disman t-
led a nd the interlock remo ved. The ea rthing sw itch is eq uip-
ped w ith a tog gle spring m echanism, actuat ing journal and
operat ion a re the same a s of t he load -break sw itch.
HRC-fuse terminalsFor the a pplication a s tra nsformer sw itch fuse termina ls fo r
HRC-fu ses a cc. to DIN VDE 0670 pa rt 4 a nd DIN 43625 can be
provided. In connection with a stored energy mechanism a
mechanical trip device is provided. It is released by the blo-w ing pin of one o f t he fuses an d t rips the sw itch three-phase.
Auxiliary switchesLoa d-break sw itch and earthing sw itch ca n be equipped w ith
a uxilia ry sw itches. They ha ve forced-ope rat ed con ta cts fo r
ON- a nd OFF-po sitio n a nd t hus f ully com ply w ith IEC 60694.
Numbe r, insta lla tion a nd a pplication o f t he a uxilia ry sw itches
a re show n in the o verview o f t he sw itch variant s a ccessories.
Moto r-operated double-rod drive
Drive lever with release
Fastener Fuse holder
Trip lever Trip rod Trip shaft
Drive plate(for manualoperation)
Drive rod
Position switchON
Position switchOFF
Stroke cylinder
Gear motor
LTV wit h HRC-fuse term inals
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7
SW IT CH VA RIA N T S LT V 12 KV
Po le cent res Drive mecha nism Drive sid e Ea rt hing Fuses Type Weig ht
mm sw it ch ca . kg
150 To g g le spring rig ht LTVK 1206 R 150 26
150 To g g le spring lef t LTVK 1206 L 150 26
210 To g g le spring rig ht LTVK 1206 R 210 27
210 To g g le spring lef t LTVK 1206 L 210 27
150 To g g le spring rig ht LTVKE 1206 R 150 36
150 To g g le spring lef t LTVKE 1206 L 150 36
210 To g g le spring rig ht LTVKE 1206 R 210 38
210 To g g le spring lef t LTVKE 1206 L 210 38
150 St o red energ y rig ht LTVS 1206 R 150 32
150 St o red energ y le f t LTVS 1206 L 150 32
210 St o red energ y rig ht LTVS 1206 R 210 33
210 St o red energ y lef t LTVS 1206 L 210 33
150 St o red energ y rig ht LTVSE 1206 R 150 42
150 St o red energ y le f t LTVSE 1206 L 150 42
210 St o red energ y rig ht LTVSE 1206 R 210 44
210 St o red energ y le f t LTVSE 1206 L 210 44
150 St o red energ y rig ht LTVF 1206 R 150 46
150 St o red energ y le f t LTVF 1206 L 150 46
210 St o red energ y rig ht LTVF 1206 R 210 47
210 St o red energ y le f t LTVF 1206 L 210 47
150 St o red energ y rig ht LTVFE 1206 R 150 56
150 St o red energ y le f t LTVFE 1206 L 150 56
210 St o red energ y rig ht LTVFE 1206 R 210 58
210 St o red energ y le f t LTVFE 1206 L 210 58
Accessories
Shunt trip coil Y2DC: 24, 48, 60, 110, 220 V
Moto r drive } AC: 115, 230 VBlocking ma gn et (at the drive mechan ism)
Auxiliary sw itche s:
Loa d -brea k sw it ch ON/OFF S1 a nd S2 2 C + 2 O o r 6 C + 6 O
Ea rthing sw it ch ON/OFF S18 a nd S28 2 C + 2 O o r 6 C + 6 OFuse t ripped S3 (sto red energ y mecha nism only) 1 C + 1 O
Po sit io n d rive ON/OFF S4 a nd S5 (st o re d e ne rg y m ech an ism o nly ) 1 C + 1 O
Loa d -brea k sw it ch ON/OFF S6 a nd S7 (mo tor d rive only) 1 C/O
Ea rthing sw it ch ON/OFF S8 a nd S9 (mo to r d rive only) 1 C/O
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INSTALLATION
8
The fo llow ing instructions are t o b e ob served on installat ion of the load -brea k sw itch
to ensure perfect function and avoid dama ges:
For safet y reasons, the sw itch is supplied in the closed po sition w ith th e t og gle
spring relaxed.
The o perating mechanism ha s to be rated for a breakaw ay t orque of max. 240 Nm
(ope ning t orq ue und er norma l con ditions : load -brea k sw itch 80 Nm, ea rthing
sw itch 130 Nm).
Do no t remo ve the g rease from t he conta cts, reg rease if necessary (lubricant type
Isof lex To pa s NB 52 or e q uivalen t ).
1.Insta ll the loa d-brea k sw itch on a flat , vertical an d strong pan el wa ll or correspon-
ding m ount ing rails. Take care tha t t he ba se fram e w ill not be be nt.
2.Adjust th e busbars an d screw the m in a w ay, tha t neither fo rce nor to rque is tra ns-
mitted to t he sw itch conn ections.
3. Insta l l the operating mechanism to match the posit ion of the actuating journal ,
right or lef t .
4. Conne ct au xilia ry sw itches, shunt t rip coil, etc., as fa r as be existing .
5. Check the cont acts fo r soiling, clea n a nd regrea se if n ecessary (see ab ove).
6.Check the conn ection to the sta tion ea rth, estab lish a flexible cable connection if
necessary.
S7
S6
S5
S4
S9
S8
Connect ion auxi l iary sw it ches Shun t t r ip co i l
Auxi l iary switches posit ion ing
S1, S2
S18, S28
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COM M ISSION IN G
M AINT ENAN CE
9
Commissioning1. Clean a ll insulate d pa rts (insulato rs, w ings, va cuum chamb er encapsula tion) with a
dry clot h.
2. Check th e conn ection o f a ll a ccessories (a ux. sw itches, shunt t rip coil, mot or).
3. Check the b usbar connections on tight ness.
4. Check the loa d-brea k switch and ea rthing sw itch on mecha nica l function, if a sto -
red ene rgy mecha nism is provided : check the m echanical tripping b y the fuse pin.
5. Sw itch o n t he a uxilia ry pow er supply, if ap plicable.
6.Check remote opera t ion a nd control , if a pplicable , i.e . function, a nnuncia t ions,
remote tripping.
Attention: Before closing the switch with stored energy mechanism the operationhandle has to be moved in OFF-position and pressed against the OFF-stop.
MaintenanceThe vacuum loa d-brea k swit ch LTV is of cla ss E 3, i.e. o nly low ma inten a nce is requ i-
red.
Reg ular servicing of t he sw itch is how ever recommend ed a ft er:
Operation period of 3 to 5 years, dependent on the ambient condit ions and the
sw itching freq uency.
1000 sw itching cycles indep ende nt of the current (until rat ed current).
3 short-circuit making operations.
Perform th e fo llow ing checks:
1. Clean t he switch w ith a d ry, non-fra ying cloth.
2. Visua l exa minat ion fo r soiling, moisture fo rmat ion, corrosion, exam inat ion of t he
insulation pa rts on creeping pa ths.
3.Clea n the ma in conta cts w ith f at -solvent , check for mechanical da ma ges and w ear.
4. Optiona l: Check the va cuum chamber o n leakag es with a high-volta ge tester (ava i-lable a s accessory): det a ch the dra w -ba ck spring s from t he interrupting device,
move the interrupting d evice backwa rds approx. 45° unti l the g uide b olts rea ch t he
circular section o f t he curve pla te. The cont a cts inside of the vacuum cha mbe r are
now completely open. Fix the interrupting d evice in this position by inserting a
screw, bo lt or similar. Conn ect the high-voltag e tester a cc. to t he relat ed o perat ion
ma nual a nd check the high-volta ge w ithstand capacity of the va cuum chamber.
After test ing pull ba ck the interrupting device bet w een th e conta ct b la des and refa-
sten the dra w -ba ck springs.
5. Grea se the ma in conta cts (lubricant type Isof lex Topa s NB 52 or eq uiva lent) and
lubricate t he bea rings and the m ovable pa rts of the drive mechanism.
6. Mechanical a nd electrica l function t ests of t he sw itch including a ccessories (mot or,
a uxilia ry sw itches, shunt trip coil).
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LTV 12 kV with toggle spring mechanism (right hand mechanism)
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LTV 12 kV with stored energy mechanism and fuse terminals (right hand mechanism)
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Peters
Hochspannungstechnik GmbH
Thieding&
Vacuum load-break sw it ch
V
Class E 3 acc. t o IEC 60265-1 (1998 )
Sw i t ch i n g o f l a r ge t r ansf o rm e r capaci t i e s
No op en a rc
Wear-f r ee con t act s, l o w m a in t enance
Com p act , sp ace sav in g con st r u ct i o n
Hochspannungstechnik Peters & Thieding GmbHSüdring 40 · D-21465 Went orf · P.O. Box 80 07 28 · D-21007 Ha mb urg · Ph on e + 49 (0) 40 72 92-30 · Fa x + 49 (0) 40 72 92-31 59
e-ma il: info @peters-th ieding.co m · Int ernet : htt p://w w w.p ete rs-th ieding .com
Peters & Thieding International GmbH Ringnet Pow er Products Peters & Thieding Romania S.A.Sudhausw eg 8 Room 2003, Queen ’s Place St rada 8 M art ie Nr. 4
D-01099 Dresden No. 74, Queen ’s Rd. Cent ral RO-4800 Baia M are
Germany Hongkong, P.R. China Romania
Phone +49 351 26633 0 Phone +852 25 300 760 Phone +40 62 213 581
Fax +49 351 26633 11 Fax +852 28 015 259 Fax +40 62 213 583
e-mail: p t -in t@aed-t d .com e-mail: k laus@iohk.com e-mail: p et ers& th ied ingro@mail.alphanet .ro
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