Medium Voltage Switchgear and Switches - Ormazabal Voltage Switchgear and Switches ... The NVL...

Medium Voltage Switchgear and Switches

Medium Voltage Switches up to 24 kVVacuum Circuit Breaker

Type: NVL

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Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLIndex

Index

Page

Main features 3

Requirements 4Application examples 4Economic efficiency 4Reliability of supply 4High operator safety 4

Switchgear unit arrangement 5

Key to type references 6

Technical data/standards 7

Overview of modules 8

Delivery programme of vacuum circuit breakers 10

Vacuum circuit breaker equipment 11

Circuit diagram 12

Control and indicator elements 14

Notes 15

CA_508_GB_0710.book Seite 2 Freitag, 1. Februar 2008 11:31 11

Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLMain features

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Main features

Type NVL vacuum circuit breakers are type-tested switchgear devices for use throughout the world in medium voltage panels up to 24 kV.

• Compact design

• Simple and robust drive

• Long durability

• Low-maintenance

• High reliability

• High operator safety

• 10.000 mechanical switching operations

• Simple installation

• Ideally designed insulation for panel installation

• Options for customer-specific equipment


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLRequirements

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Application examples

NVL vacuum circuit breaker is suitable for use in switching stations for power generation and power distribution for:

• Utility companies• Combined heat and power stations• Power distribution at buildings• Steel industry• Heavy industry• Airport power distribution systems• Automotive industry• Chemical industry• Petro-chemical industry• Food industry• Main distribution substations• Shipbuilding• Stand-by generating supplies

Economic efficiency

The flexibility of the standardised NVL vacuum circuit breaker with its options for configuration to customer requirements allows it to be functionally matched to its application. The circuit-breaker can be extended or modified at a later date after installation.

Reliability of supply

The high quality of vacuum circuit breaker with separate compartments for busbars, switchgear and cable connections ensures a high degree of reliability in operation and supply for the application. Thus the devices can be equipped, for instance, with an auto-reclosure in order to restore availability as quickly as possible after a fault in the mains power supply.

High operator safety

The simple and clear arrangement of the operating and indicator elements and optional locking elements, e.g. key locks for actuating keys or electromechanical actuation locks, guide the user to actuate safely.


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLSwitch arrangement

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Switch arrangement

The NVL vacuum circuit breaker consists of the basic switch frame, the three switch poles and the switch mechanism. The baseframe must be earthed via a defined fixed earthing point.

The switch poles include the vacuum switching chamber with contact system, the contact pressure springs, the tripping springs, as well as cast-resin parts. The cast-resin parts are for insulation, support and protection. In addition to their insulating function, they also absorb external forces from the switching process, contacting and short-circuit forces. They also provide mechanical protection for the vacuum chamber.

A stored energy spring mechanism is used as an operating mechanism. The closing spring is charged using a crank handle or a motor drive. During the making process, the closing spring charges the contact pressure spring and closes the contacts. At the same time, the tripping springs are charged. To achieve operational capability short-time interruption, after the closing spring has been discharged it is recharged either manually or automatically if a motorised drive is mounted. By this means the necessary energy is stored for a short-time interruption, such as the switching sequence "OFF"-"ON"-"OFF".


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLKey to type references

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Key to type references NVL vacuum circuit breaker

The NVL circuit breaker can be equipped with a wide variety of standardised customer options. The types of device are differentiated in their widths, ratings and principal functions.

Example : NVL2A-12/25/1250-150A

Type of equipment:: VL = Vacuum circuit breaker

Type of insulating enclosure: 2, 3

Rated voltage: 12 = 12 kV17 = 17.5 kV24 = 24 kV

Rated short-circuit breaking current

16 = 16 kA20 = 20 kA25 = 25 kA31 = 31.5 kA

Rated current: 630 A1250 A1600 A2000 A2500 A

Distance between polecentres:

150 mm210 mm230 mm275 mm

N. . . . .A-. . . ./. . . . /. . . . -. . . .-A


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLTechnical data/standards

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Technical data for NVL vacuum circuit breaker

Standards

* in future** so far

Rated voltage Ur [kV]

12 17,5 24

Rated frequency fr Hz 50 50 50

Rated lightning impulse withstand voltage Up kV 75 95 125

Rated power-frequency withstand voltage Ud kV 28 38 50

Rated normal current Ir Optional A 630 630 630

A 1250 1250 1250

A 1600 1600

A 2000 2000

A 2500 2500

Rated short-circuit breaking current Isc Optional kA 16

kA 20 20 20

kA 25 25 25

kA 31.5 31.5

Rated peak withstand current Ip Optional kA 40

kA 50 50 50

kA 62.5 62.5 62.5

kA 80 80

Rated short-time withstand current Ikat tk = 3 s

Optional kA 16

kA 20 20 20

kA 25 25 25

kA 31.5 31.5

Ambient temperature T °C -5 to +40

Average measured over 24 h maximum °C +35

Relative humidity

Average measured over 24 h maximum % 95

Average measured over 1 month maximum % 90

Altitude maximum m 1000

Opening time ms <55

Closing time ms <45

Arcing time ms approx. 15

Rated operating sequence (for automatic reclosing) O-0.3s-CO-15s-CO

Classification M2, C2, E1

VDE 0671 part 100 IEC 62271-100

VDE 0670 part 1000 (VDE 0671 part 1*) IEC 62271-1 (IEC 60694**)

NVL vacuum circuit breaker satisfy the listed VDE standards andIEC publications:


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLOverview of modules

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X1 Terminal strip X0: Plug-in connector , 64-pole

K1 Anti-pumping relay

Y7 Electric closing lock-out

Stored energy spring mechanism manual winding

Q1 Auxiliary contacts/signalling switch, 10 or 20-pole M1 Stored energy spring mechanism motor Closing spring

Earthing terminal

Y6 3. Trip element OFF

S19 Signalling switch 1S,mech. push-button ON activated

S4 wipe contact, signal OFF

Y3/Y4/Y5 2. Trip element OFF

Y1 Trip element ON

Y2/Y5 1. Trip element OFF

Transport mount

S1/S2 Signalling/control switch (stored energy spring mechanism)


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLDelivery programme

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Delivery programme

Rated voltage Ur: 12 kVSwitch types:1)

NVL2A-12/20/630-150ANVL2A-12/25/630-150ANVL2A-12/31/630-150ANVL2A-12/20/1250-150ANVL2A-12/25/1250-150ANVL2A-12/31/1250-150ANVL2A-12/20/630-210ANVL2A-12/25/630-210ANVL2A-12/31/630-210ANVL2A-12/20/1250-210ANVL2A-12/25/1250-210ANVL2A-12/31/1250-210ANVL3A-12/20/1600-210ANVL3A-12/25/1600-210ANVL3A-12/31/1600-210ANVL3A-12/20/2000-210ANVL3A-12/25/2000-210ANVL3A-12/31/2000-210ANVL3A-12/20/2500-210ANVL3A-12/25/2500-210ANVL3A-12/31/2500-210A1) Key to type references → page 6.

Rated voltage Ur: 17.5 kVSwitch types:1)

NVL2A-17/20/630-150A 3)

NVL2A-17/25/630-150A 3)

NVL2A-17/31/630-150A 3)

NVL2A-17/20/1250-150A 3)

NVL2A-17/25/1250-150A 3)

NVL2A-17/31/1250-150A 3)

NVL2A-17/20/630-210ANVL2A-17/25/630-210ANVL2A-17/31/630-210A NVL2A-17/20/1250-210A NVL2A-17/25/1250-210A NVL2A-17/31/1250-210ANVL3A-17/20/1600-210A 3)

NVL3A-17/25/1600-210A 3)

NVL3A-17/31/1600-210A 3)

NVL3A-17/20/2000-210A 3)

NVL3A-17/25/2000-210A 3)

NVL3A-17/31/2000-210A 3)

NVL3A-17/20/2500-210A 3)

NVL3A-17/25/2500-210A 3)

NVL3A-17/31/2500-210A 3)

Rated voltage Ur: 24 kVSwitch types:1)

NVL2A-24/16/630-210A 3)

NVL2A-24/20/630-210A 3)

NVL2A-24/25/630-210A 3)

NVL2A-24/16/630-230A 3)

NVL2A-24/20/630-230A 3) 4)

NVL2A-24/25/630-230A 3) 4)

NVL2A-24/16/1250-230A 3)

NVL2A-24/20/1250-230A 3) 4)

NVL2A-24/25/1250-230A 3) 4)

NVL2A-24/16/630-275ANVL2A-24/20/630-275ANVL2A-24/25/630-275ANVL2A-24/16/1250-275ANVL2A-24/20/1250-275ANVL2A-24/25/1250-275A

Technical data and dimensions2):

Rated voltage Ur [kV]

12 17.5 24

Distance between pole centres a mm 150 210 210 1503) 210 2103) 2103) 2303) 275

Rated normal current Ir A 630 630 1600 630 630 1600 630 630 630

1250 1250 2000 1250 1250 2000 1250 1250

2500 2500

Type of insulating enclosure 2 2 3 2 2 3 2 2 2

Dimensions mm

b 435 555 555 435 555 555 555 595 685

c 370 370 390 370 370 390 431 431 431

d 594 594 594 594 594 594 594 594 594

e 255 255 300 255 255 300 255 255 255

f 198 198 153 198 198 153 198 198 198

g 66 66 66 66 66 66 66 66 66

h 402 402 402 402 402 402 402 402 4022) Additional technical data → page 7.3) possible additional insulation plates (phase insulation) required in the panel; not included in the scope of delivery4) In development. Date of delivery on request.

aa

b

106

h

fe

g

d

16

c

164


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLEquipment for vacuum circuit breaker

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Equipment for vacuum circuit breaker

Standard equipment:

Additional equipment:

Type: NVL....A-....../......./......... - ........AExample: NVL2A-12/25/1250-150A

charged spring drive with manual actuation

1. trip element "OFF"

auxiliary contacts 5 NO + 5 NC (up to 4 NO + 5 NC free available)

mechanical switching operation counter

mechanical push-buttons "ON" and "OFF"

mechanical position indicator

mechanical spring charge indicator

64-pin plug connector with mechanical interlocking

motorised accumulator drive incl. trip element "ON", annunciator switch for spring charging, anti-pumping relay

2. trip element "OFF"

3. trip element "OFF" with auxiliary contacts, extension 5 NO + 5 NC

transformer operated trip, alternative to 1. or 2. trip element

undervoltage release, 100 V AC (non-delayed) alternative to 2. trip element

auxiliary contact extension 5 NO + 5 NC

signalling switch spring accumulator tensioned

electric closing lock-out

fleeting contact switch message "OFF"

key interlocking for mechanical OFF-push-button

key interlocking for mechanical ON-push-button

signalling switch "mech. ON-push-button activated"

Auxiliary voltages for circuit-breaker 24 V DC 48 V DC 60 V DC 110 V DC 220 V DC 110 V AC 230 V AC

Motorised drive, stored energy spring mechanism

1. trip element "Off"



trip element "On"

electric closing lock-out


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLCircuit diagram

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2119

13

14

X0 A6

X0 A5

Y2

X1 9

X1 8

Q1

X1 7

18

53

54

Y3

X0 A8

X0 A7

17

16

33

63

64

Y6

X0 D2

X0 D1

32

31

20

Y4<U

V4

X0 C6

X0 C5

Y5I>

V5

X0 A9

X0 A10

X1 22

X1 X1

X1

Q1 Q1

X1 X1

X1 X1

Y7V7

X1 30

X0 C8

X1 29

X0 C7

2

X1

X0

S2

S1

M1

1

2

1

A2

X1 2

1

X0 A1

Y1 K1

A1

A2

11/13

1422

21

K1

23

24

11

12

X1

Q1

6

X0 A4

X1

X1 3

X0 A3

4

3

5

M~

S1

Circuit diagram

Description:

X0 Plug-in connector 64-poleX1 Terminal stripQ1 Auxiliary switchY2 1. trip element OFFY3 2. trip element OFFY4 Undervoltage release OFF (alternative to Y3)V4 Rectifier for Y4Y5 Transformer operated trip OFF (alternative to Y2 or Y3)V5 Rectifier for Y5Y6 3. trip element OFFY1 Trip element ONK1 Anti-pumping relayM1 Stored energy spring mechanism motorS1 Control switch (ON release and motor)S2 Signalling/control switch (spring accumulator tensioned)S4 Fleeting contact switch, message OFFS6 Fleeting contact break (in case of local actuation)S19 Signalling switch, mech. ON-push-button activatedS5 Control switch, interlocking of el. switching on (with drawer unit only)S7 Control switch, release interlocking of el. switching on (in conjunction

with Y7 only)Y7 Electric closing lock-outV7 Rectifier for Y7

Motor ONwith anti pumping relay

OFF (1) OFF (2) OFF (3) alternative trip elementOFF (2)

alternative trip elementOFF (2) if necessary (1)

electric closinglock-out

1. trip element 2. trip element 3. trip element Undervoltage release(non-delayed)

Transformeroperated trip

with control switch S7(integrated in

„ON"-release path)


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLCircuit diagram

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26

27 2

115

16

1

4

34

11

4

3

53

54

41

42

63

64

21

22

31

32 62

61

74

73

72

71

82

81 83 91 93 101 103

84 92 94 102 104

S4

S6S19

X0

C10

C2C4

S2

X0C11

C1C3

Q1

X0 B1B4

B7B9

X0B2

B3

B5

B6B10

B8

X0 C11

A11

A13 B11

B13

B15

C13

C15 D15

X0 C12

A12 A16 B14 C14

A14 B12 B16 C16 D16

51

52

A15

X1

X1

Messages

Sprin

g ac

cu-

mul

ator

tens

ione

d

ON-p

ush-

butto

n ac

tuat

ed

Flee

ting

cont

act

switc

h m

essa

ge

"OFF

"Auxiliary contactsAvailability optionalConsider the assembled trip elements

Sign

alPl

ug-in

con

nect

or


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLOperating and display elements

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Operating and display elements

The operating and display area is located on the front side of the vacuum circuit breaker.

All functional elements, e.g. the mechanical push-buttons for switching on and off, the indicator for the switch position and the stored energy spring mechanism are clearly arranged in order to ensure simple operation.

The operating push-buttons can be equipped with optional key interlocking devices.

Optional key interlocking devices for ON/OFF push-buttons

Switch position indicator

mechanical switching operation counter

Spring charge indicator

Operation opening for manual winding up of spring accumulator

Push-button ON

Push-button OFF


Medium voltage switches up to 24 kV, Vacuum circuit breaker type NVLNotes

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Notes

CA_508_GB_0710_04.fm Seite 15 Freitag, 22. Februar 2008 2:33 14

SF6-insulated switchgear

Type GAType GAEType CPG.0Type CPG.1

Air-insulated switchgear

Type EAType AMC

Air-insulated switches Type NVLType KL(F), T, DES

Subject to alteration

CA 508 GB 0710

Technical-Commercial Department

Tel.: +34 94 431 87 31Fax: +34 94 431 87 32E-Mail: [email protected]

Medium Voltage Switchgear and Switches - Ormazabal Voltage Switchgear and Switches ... The NVL...

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