766e, Outdoor Switch-disconnector FLa 15/97 · 2 766 DRIESCHER - Outdoor Switch-Disconnector FLa...

766

DRIESCHER -

Outdoor Switch-Disconnector Type FLa 15/97

• Rated voltage 12 kV, 24 kV, 36 kV and 38.5 kV

• Rated current 400 A and 630 A

• 1-pole and 3-pole design

ELEKTROTECHNISCHE WERKEFRITZ DRIESCHER & SÖHNE GMBHD-85366 MOOSBURG • TEL. +49 87 61 6 81-0 • FAX +49 87 61 68 11 37http://www.driescher.com [email protected]

15/97

http://www.driescher.deFür Sie im Internet

FL

a

2

766

DRIESCHER - Outdoor Switch-Disconnector FLa 15/97according to EN 60265-1

content

• 3 Genaral, designs

• 4 Switching in a vaccum

• 5 Operation mode, technical data

Horizontal arrangement of the switch-disconnectors

• 6 FLa 15/97 mounted on wooden or concrete pole

• 7 Mouning supports, cu-tension straps

• 8 FLa 15/97 wide span system, coupling shafts for wide span system

• 9 Arrangement according to system “Tonnenbild“, arrangement for wide span system

• 10 Underframe, support bearing

• 11 Permissible tension angle, Tension units, Concrete cross-arm

• 12 FLa 15/97 - 64W

• 13 Accessories for tension units

Vertical arrangement of the switch-disconnectors

• 14 FLa 15/97 - 6400

• 15 FLa 15/97 - 6400 1-pole design

• 16 FLa 15/97 - 6410 - with fuse holders

• 17 FLa 15/97 - 6410 SA - with fuse holders and operating fuse

• 18 Arrangements of operators for Type FLa 15/97 - 6400, FLa 15/97 - 6410

• 19 Operation examples

• 20 Examples to use the switch-disconnectors

3

General

Contrary to former outdoor load-break switches inwhich it was common practice for the arc to be extin-guished in oil, with the new developed outdoorswitch-disconnector FLa 15/97 arc extinction takesplace in a vacuum interrupter.

Based on a patented insulating system there is alsono liquid or gaseous medium required for the exter-nal insulation strength of the vacuum interrupters.The vacuum quenching device is embedded in aweather-proof insulating housing.This switchgear is therefore also recommended forspecial applications (e.g. in water protection areas).

The outdoor switch-disconnector is capable of swit-ching on its rated current as well as its rated short-circuitmaking current via the main contact system. The disconnecting process is implemented via theshunt-connected vacuum interrupters, resulting in noexternal arcing phenomena.A fully developed eccentric make-and-break mecha-nism operates the vacuum interrupters and ensuresClass M2 with regard to the mechanical strength(corresponds to 5000 mechanical operating cycles).

The designs FLa 15/97 correspond in their maindimensions to the switches FLa 15/60, FLa 6400 andFLa 6410 (refer to brochure 762, 763), i.e. the fixingdimensions have remained unchanged.

Also the operating linkage (brochure 775) can beused in the common design.The switch frames and the operating shafts mountedin bronze bearings are hot-galvanized.

All insulators used in the design (brochure 712) are ofcycloaliphatic cast resin.The contacts with flanged ends in compliance withDIN 46206 as well as all other live components of thecontact system are of electrolytic copper and aresilver-plated in compliance with QTL 200.

Amply dimensioned cross-sections as well as theexternal spring mechanism at the contact jaw whichprovides constant contact pressure guarantee aneasy and satisfactory switching, even after manyyears of operation.

Connecting screws with nuts, washers and lockwashers are made of rustproof steel.

The outdoor switch-disconnector FLa 15/97 are avai-lable for rated voltages of 12 kV to 38.5 kV and ratedcurrents of 400 A and 630 A, and have been tested incompliance with the valid regulations.

By using adapters it is possible to retrofit alreadyinstalled equipment from the FLa 15/60 family (of themore recent design) with vacuum interrupters.

The attached earthing switches are, however, alwayswithout rapid breaking.

The external metal parts of the rapid make-and-breakmechanism (actuating fork) are made of rustproofsteel.

DRIESCHER - Outdoor Switch-Disconnector FLa 15/97

766

Designs

Vertical arrangement (switching angle 90°)

• FLa 15/97 - 6400

• FLa 15/97 - 6410; with fuses

• FLa 15/97 - 6410; with skew mounted fuses

• FLa 15/97 - 6410 SA; with fuse operates

• FLa 15/97 1-pole design

Horizontal arrangement

• FLa 15/97; for wodden- or concrete pole

• FLa 15/97; wide span system on concrete pole or steel cross arms

• FLa 15/97 - 64W; (switch angle 110°)

4


Switching in a vacuum

• The trend is to use a vacuum

During the Sixties basic research began on swit-ching in a vacuum. At this time low-oil switcheshad become firmly established in medium voltagenetworks, based on their reliable operation overdecades, and were accepted by users as reliabledevices. In laboratory tests it proved that the vacu-um switches were superior by far to the conventio-nally applied switching principles. The first experience with this vacuum technologywas gathered using our line sectionalizers inoverhead lines for railway operations, which havebeen successfully used since 1971. In principle, the proven arcing chamber methodhas been maintained in the new switchgears whichwere developed in 1997.

In distribution networks a reliable power supply isthe key criterion, wherein it is not the high numberof operating cycles which is so important, but ratherthe high degree of reliability. Even after many years of life the switchgear mustmake and break reliably.

All these requirements necessitate a switching unitwith electrical properties that preferably do notchange throughout its service life. The vacuum interrupter is hermetically sealed andthe purest materials ensure that the vacuum requiredfor reliable switching remains intact throughout theentire service life.

Also the contact resistances remain at very lowvalues as there is no oxidation process in a vacuum.

• Advantages of the switch-disconnector FLa 15/97over outdoor switch-disconnectors with conventionalextinguishing media:

• faster dielectric recoveryafter the breaking process

• high insulation resistance

• short total travel

• compact operating mechanism

• low contact wear and consequently

• high operating frequency

• very long service life

766

Description of operation:

During the disconnection the main contacts openfirst, while the current is commutated to the shunt-connected current path, the pivot arm and theactuating fork. Once a specified disconnecting position is reachedthe actuating fork operates the toggle mechanisminside the arcing chamber and causes the vacuuminterrupter to disconnect. The breaking arc in the vacuum arcing chamber issafely extinguished at the first current zero with noexternal arcing phenomena.The continued movement of the hinged insulatorthen provides the visible isolating distance.

During the making process the pivot arm strikesthe actuating fork (vacuum interrupter is still dis-connected). After the continued movement of thehinged insulator or immediately before makingcontact with the main contact a visible pre-arcingoccurs between the main contacts, which extin-guishes when the main contact system has full cur-rent carrying capacity. Immediately afterwards the shunted vacuum inter-rupter closes.

Guide

Pressure spring

Buffer

Push rod

Cam

Bearing

Pressure spring

Guide ring

Bushing

Vacuum interrupter

Gaiter

Housing

1

2

3

4

5

6

7

8

9

10

11

12

5

Technical data

Operation mode

Type

Rated voltageRated currentRated mainly active load breaking currentRated distribution line closed-loop breaking currentRated cable-charging breaking currentRated earth fault breaking currentRated cable breaking current under earth fault conditionsRated peak withstand currentRated short time current (1 sec.)Rated short-circuit making current

12 kV400 / 630 A

630 A630 A25 A

200 A

32 A40 kA16 kA25 kA

24 kV400 / 630 A

630 A630 A25 A

200 A

32 A40 kA16 kA25 kA

50 kV60 kV

125 kV145 kV

38.5 kV400 / 630 A

630 A630 A

-200 A

32 A40 kA16 kA10 kA

80 kV90 kV

180 kV210 kV

36 kV400 / 630 A

630 A630 A

-200 A

32 A40 kA16 kA10 kA

70 kV80 kV

170 kV195 kV

Rated power frequency withstand voltageLeiter - earth / conductor - conductorbreak gap

28 kV32 kV

Rated lightning impulse withstand voltageLeiter - earth / conductor - conductorbreak gap

75 kV85 kV


• Making Operation

• Breaking Operation

1) This data applys also for earthing switch

1) 1)1) 1)

766

Ur

IrI1I2a

I4a

I6a

I6b

IpIk

Ima

Ud

Up

FLa 15/97

Switch in "ON" positionMain and secondary contact system(vacuum interrupter) closed.

Switch in "ON" positionMain and secondary contact system(vacuum interrupter) closed

Switch during breaking phase.The main contact system is already openedwhen the secondary contact system breaks (vacuum interrupter is shunted).

Switch during the making phase. Themain contact system is still open duringthe closing via the secondary contactsystem (vacuum interrupter is parallelconnected)

Switch in "OFF" positionMain and secondary contact system (vacuum interrupter) open. The visible gapis attained.

Switch in "OFF" positionMain and secondary contactsystem (vacuum interrupter) open

6


FLa 15/97 - for mounting horizontal on wooden or concrete pole

1) Hex head bolt (caulked) with nut, washer and spring washer 2) Hex head bolt with screw, washer and spring washer

Equipment with auxiliary switches or motordrive only if ordered additionally.

Switches with rated current 630 A, please send inquiry (Connection with Cu-tensions straps with 4 layers).

766

d

146514652065246520652465

e

520520520520460460

l

153015302130253021302530

Drawing-no.

LT3-091445LT3-091445LT3-091445LT3-091445LT3-091979LT3-091979

Weightapprox.110 kg110 kg125 kg135 kg140 kg150 kg

Rated current400 A400 A400 A400 A400 A400 A400 A

b

405405405405455455

c

600600600600650650

p

700700

1000120010001200

a

215215215215265265

x/y

765765

1065126510651265

Part-no.

766 52011766 52011766 52013766 52014766 82013766 82014

Ratedvoltage12 kV24 kV24 kV24 kV36 kV36 kV

38.5 kV

p

700700

1000120010001200

≈ H2≈ H1

363363363363443443

774774774774774774

Drawing-no.

LT3-091445LT3-091445LT3-091445LT3-091445LT3-091979LT3-091979

Weightapprox.115 kg 125 kg145 kg160 kg170 kg170 kg

Part-no. withearthing switch

766 22111766 52111766 52113766 52114766 82113766 82114

Ratedvoltage12 kV24 kV24 kV24 kV36 kV36 kV

38.5 kV

Rated current400 A400 A400 A400 A400 A400 A400 A

planning in stage

planning in stage

•without earthing switch

• with earthing switch at side with chamber

7

766


12243612243624362436

Part-no. 531 71004 531 71006 531 71009 531 71011

Lengths 1100 mm 1340 mm 1540 mm 1740 mm (special length)

1100110013401340134015401340134015401540

1340134015401340134016401540154015401540

1111111111

Mounting supports

for switch-disconnectors see on page 6

on single pole

Drawing no. FT 4-44328 • Part no. 760 10124Weight (with accessories) approx. 14.4 kg

on double pole

Drawing no. FT 4-44328 • Part no. 760 10130Weight (with accessories) approx. 15.4 kg

1) Hexagonal screw with nut and spring washer2) Gewindebolt with nut and washers3) Hexagonal screw and washer

On wooden or concrete poleOn wooden or concrete poleOn wooden or concrete poleOn wooden or concrete poleOn wooden or concrete poleOn wooden or concrete poleOn concrete cross-arms (wide span system)On concrete cross-arms (wide span system)On concrete cross-arms (wide span system)On concrete cross-arms (wide span system)

Single stayingSingle stayingSingle stayingDouble stayingDouble stayingDouble stayingSingle stayingSingle stayingDouble stayingDouble staying

Switch mountingFor rated voltage

kVAnchoring

quantity of straps each

side and each pole • 400 A

Straps lengths

Fixed insulator side Hinged insulator side

Note: The tension straps with 3 layers 30 x 1 mm each are riveted together in the centre (page 9).

Cu-tension straps (3 x 30 x 1, tin-plated) • Standard lengths

8

766


FLa 15/97 wide span system for mounting on concrete cross-arms

2436

400400

766 56051766 86051

670990

719774

100135

of 1000 mm to 2400 mm steppedby 200 mm respectively 3)

Ratedvoltage

kV

Ratedcurrent

A

242424363636

400400400400400400

Ratedvoltage

kV

Ratedcurrent

A

tp

Fixed insulator sideHinged insulator side

Fixed and hinged insulator sideFixed insulator side

Hinged insulator sideFixed and hinged insulator side

Earthing switch

b≈ H

97.0118.0

670840840990990990

b

Weightapprox.

kg2)Part-no.

766 56151766 56251766 56351766 86151766 86251766 86351

Part-no.

LT3-091977in planning

Drawing-no.

113119135134134150

Weightapprox.

kg2)

LT3-091977LT3-091978LT3-091978

planningin

stage

Drawing-no.

• without earthing switch

• with earthing switch

10001200140016001800200022002400

3030303030404040

4.56.78.911.113.328.032.036.0

641 14460641 14360641 14370641 14390641 14400641 14420641 14430641 14440

9.013.417.822.226.656.064.072.0

13.520.126.733.339.984.096.0

108.0

Pole distance p Shaft diameter Part-no.

2 coupling shafts for switch

without earthing switch

Weight approx. kg


with 2 earthing switches

Weight approx. kg


with earthing switch

Weight approx. kg

Draw

ing-No. A

Z 4-38254

Coupling shafts for switch-disconnectors (wide span system)

2) The weights include the CU tension straps, but not the coupling shafts (for dimensions of Cu tension straps please refer to table on page 7) 3) For dimensions and weights and part numbers of the coupling shafts please refer to following table

For wide span system - comprising 3 single poles interconnected using coupling shafts

9


766

FLa 15/97 wide span system - arrangement according to system “Tonnenbild“

Arrangements of operating mechanisms for wide span system

Switch-disconnectorswitch FLa 15/97 in Three-plane arrangement

• comprising 3 single poles which are mounted oncross-bars arranged one above the other

• Joint actuation of the 3 poles is implementedusing a vertical operating linkage

The distances marked with x and y can be determined accordingly

single- double- triple- manually operated mechanism

Swtich dimensions see page 8

Earthing switch

Switch-disconnector

Switch-disconnector


10

766

for wide span system (drawing no. LH 3-43667) • Underframe fully assembled for three-pole switch-disconnector • rated voltage 24 kVPart no. 760 20120 (drawing no. LH 4-44069), weight approx. 32 kg, for oversized concrete cross-arms

Underframe

withoutwith

Part-no.

760 20105760 20106

Weight

approx. kg

1.93.1

h

85159

Drawing-no.

LH 4-44099LH 4-44099

Rated

voltage

24 kV24 kV

Underframe

withoutwith

Part-no.

760 20105760 20106

Weight

approx. kg

1.93.1

h

85159

Drawing-no.

LH 3-42752LH 3-42753

Support bearing for switch-disconnectors withearthing switches, rated voltage 36 kV, on request

Underframe

For switch-disconnectors without earthing switch for mounting on concrete cross arms (page 10)with appropriately cast threaded bushes

Support bearing

For switch-disconnectors with earthing switch for mounting on concrete cross-arms with appropriately cast threaded bushes

Support bearing

11

766


Permissible tension angle

Concrete cross arm

Design of tension units

a) for switches on wooden or concrete pole without top cross arm b) for switches on concrete cross-arm (wide span system)

1) For the insulator, all types of tension insulators with pin eyes of pin sizes K 11 and K 16 can be used.

Single staying Double staying

For mounting an outdoor switch-disconnector FLa 15/60 with tension units

The specified angles are not to beexceeded based on reasons concer-ning the functional operation. In the event of exceptions, pleaseconsult us first.

1) cast threaded bushes for shaft support bearings

Remark: For peak tensions (>30 kN) underframes are usually required for breaker pole mounting (see page 8).


12

FLa 15/97-64W (horizontal mounting)

Swtich dimensions see page 14

Mounting profiles

Attention:

With type FLa 15/97- 64 W (horizontal) always make sure that the insulator crank is applied right upto the dead center position in order to avoid any unintentional closing of the switch in the event of adefective operating mechanism. The switching angle is therefore 110° in this case. (Function of anover dead center switching)

Should you desire more detailed information, we would be pleased to forward this to you!

• Phase spacing p= 500 and P= 700 mm are possible

• For retrofitting existing concrete column lines

• With appropriate mounting profiles also possible for mounting on cross-bars

• Available with bird protection upon request

766


13

766

Small suspension hinge for switch On wooden or concrete pole withouttop cross arm (see page 5)(suspended in switch frame)

Strap for spacer

Spacer

Forked strap s=100 mm for switch on wooden pole

Forked strap s=250 mm for horn-breakswitch in wide span system version

Adjustable strap for switch on auf concrete pole with T-head crossarm in wide span system version(adjustable by 50 mm)

Tensioning stiffener up to 70 mm2

Clamping cable lug 35 to 70 mm2

(required in addition)

Cu tension straps 3 x 30 x 1 mmL= 1100 mmL= 1340 mmL= 1540 mmL= 1740 mm

2-760 10121

2-515 11064

2-775 43010

2-775 42010

2-760 20111

2-531 710042-531 710062-531 710092-531 71011

FT 4-17086

FT 4-17090/1

FT 4-38202/1

FT 4-38202/2

FT 4-15728

WN 4-37028

0,8

1,0

1,2

1,9

2,1

0,91,11,31,4

1

2

3

4

5

6

7

8

Designation Part-no. Drawing-No. Weight approx. kg

Accessories for tension units

14

766


FLa 15/97-6400

Attention!

• Switch angle of the switch-disconnector 90°

• Also possible for horizontal mounting (switch angle 110°, see page 12)

• Equipment with auxiliary switches or motordrive only if ordered additionally.

d

710760960

e

360375574

h1

261311390

h2

322392472

L

741793

1044

Weightapprox.99 kg

109 kg126 kg

Rated current630 A630 A630 A

b

101012101610

c

500550750

p

400500700

a

95011501550

x/y

700800950

Part-no.

767 34002767 64003767 94004

Rated voltage12 kV24 kV36 kV

p

400500700

t

315315390

≈ H2≈ H1

345575731

8459231162

Drawing-no.

LT3-091444LT3-090964LT3-091894

Weightapprox. 115 kg125 kg145 kg

Part-no. withearthing switch

767 34502767 64503767 94504

Rated voltage12 kV24 kV36 kV

Rated current630 A630 A630 A

1) Hex head bolt (caulked) with nut, washer and spring washer 2) Hex head bolt with screw, washer and spring washer 3) Support bearing for earthing switch shaft (only for 36 kV)


• with earthing mounted below, mechanical interlocking

15

766

Rated voltagekV24

Rated currentA

630

Part-no.

767 62 001

Weightapprox.43 kg

Drawing-no.

LT3-091997


for earth fault neutralizer


Single pole outodoor switch-disconnector FLa 15/97 - 6400


16

766


FLa 15/97-6410

Part-no.

767 26002767 56003767 99004

b

96711671462

f

1128,51330,51676,5

≈H1

8459231160

≈H2

526575699

≈h1

261311383

h2

322392472

w

617782952

x

700800950

y

700800950

a

90511051400

p

400500700

d

101012101610

c

95011501550

Weightapprox.108 kg133 kg182 kg

Part-no.

767 26502767 56105767 99104

t

487,5632,5802,5

x1

700800950

y1

700800950

s

325475570

p

400500700

v

756565

Weightapprox.121 kg148 kg200 kg

Drawing-no.

IT3-092001IT3-091994IT3-098279


• with earthing switch, mechanical interlocking

for missing dimensions refer to table above



Rated current

A630630630

Rated voltage

kV122436

Rated current

A630630630

Rated voltage

kV122436

with fuse holders mounted upright below for HV-HBC fuses of up to 200 A rated current

17

766

The SA special version of the outdoor fused switch-dis-connector FLa 15/6410 which has been well-provenover decades under very versatile operating conditions,has a disconnecting energy storage mechanism whichcarries out all-pole interruption of the switch if a HV-HBC fuse operates (with a tripping impact force of 120 N).It is therefore possible to also benefit from the advanta-ges of the HV-HBC fuses with thermal protection inoutdoor applications as well. The energy storagemechanism (patent application filed) is designed insuch a way that no additional effort has to be applied

when manually operated using the hand crank.Following a disconnection through operation of the fuse(SA) the stored energy mechanism is tensioned in theOFF position after the return of the operating mecha-nism. After changing the fuse and switching on, theswitch is ready to interrupt again.Stored energy mechanism and interrupting mechanismare securely housed in a hot galvanised steel platehousing which is also vented. Transparent covers pro-tect the release mechanism at the upper contact clipsof the HV-HBC fuses respectively.


Rated voltage kV122436

Rated currentA

630630630

Drawing-no.

planningin

stage

Rated voltagekV122436

Rated currentA

630630630

t

307472642

x1

700800950

y1

700800950

s

325475570

p

400500700

v

756565

Weightkg

127168229

planning in stage

planning in stage

Equipment with auxiliary switches only if ordered additionally.

FLa 15/97-6410 SA with fuse holders mounted below

with fuse holders mounted below for pin operated HV-HBC fuses of up to 200 A rated current


•with earthing switch

18

766


Arrangements of operatings (examples)

FLa 15/97-6400

• without earthing switch

• single manually operated mechanism

FLa 15/97-6400

• with earthing switch

• double manually operated mechanism

19

766


Operators (see brochure 776)

Example 2:control unit with mounted

motordrive UM20 for radio control

Example 1:Motordrive UM90 for

remote control (drawing)

triple manually operated mechanism

single manually operated mechanism

Example 3:double

manually operated mechanism

Bestellnr. 3-81707660 • 02-04

Examples of use

Examplel 2:FLa 15/97 -6400 for outgoing cable

with earthing switch

Example 1:FLa 15/97 -6400 for transformer stations

Dimensions, weights , diagrams and descriptions in the list are non-binding. Subject to change without notice.

Printed on chlorine free bleached paper. For nature´s sake.

switching • electricity • safely

ELEKTROTECHNISCHE WERKEFRITZ DRIESCHER & SÖHNE GMBHD-85366 MOOSBURG • TEL. +49 87 61 6 81-0 • FAX +49 87 61 68 11 37http://www.driescher.com [email protected]

766e, Outdoor Switch-disconnector FLa 15/97 · 2 766 DRIESCHER - Outdoor Switch-Disconnector FLa...

Documents

Transcript of 766e, Outdoor Switch-disconnector FLa 15/97 · 2 766 DRIESCHER - Outdoor Switch-Disconnector FLa...