understanding masterpact nt & nw nw breaker frame micrologic socket auxiliaries and accessories...

Understanding Masterpact NT & NW

NW breaker frame

Micrologic socket

Auxiliaries and accessories

Drawout installation

Fixed Installation

Range and performances

Understanding Masterpact NT & NW - 09/99 - DBTP213EN 3

ContentsNW breaker frame

Case

Moving contact

Current transformers

Power supply

Fixed contact

Assembly

Arc chamber

Opening of contacts

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Case

Supports the opening /closing mechanism

• stored energy mechanism (OCO sequence )

Insulated organic polymer material

Fire proof

• No halogen


Moving contact

Complete assembly

• fingers, braids, terminal

• no internal bolted joint

High electromechanical and

thermal withstand

• blow on

Specific limiter contact

assembly

• L1 performance

Direct link to

the OCO mechanism

Isolated compartments


Current transformers

Combined technology

• air core for measurement (Rogowsky)

– measurement precision 1%

– linearity from 40A to 400kA

– self powered

• iron core for trip unit power Integral connector

• automatically connected One CT per pole Mounted on bottom side of

moving contact


Micrologic trip unit power supply

Circuit breaker Micrologic Communication module

Basic protection

Trip unit power supply

Additionals functions (measurement,

analyses...)

Power supply

COM Module

Opticalcoupling

Optional external 24V DC power supply for :programmable contact power supply,when breaker is open :•Powers display, •Identification, adjustments through “Com” module

Iron CT

Air CT Isolation

Standard Internal voltage sensor oroptional external voltage sensor forµP power supply and measurement

ASIC Microprocesseur

BUS power supply


Fixed Contact

Breaking the arc

• arcing contact protects main contacts against wear

• high number of electrical operation

• increased life expectation

Top terminal

• no internal joint


Assembly

Reliability

• reduced number of components

• simple concept

• compact

• modular

Three cases (3x3P & 3x4P)

• NT06 - 16

• NW 08 - 40

• NW 40b - 63


Arc chamber

Increased arc impedance favors extinguishing properties

patented metallic filter • high porosity • energy and gas absorption

results in de-ionization of external gas

Reduced external projections Reduced enclosure pressure Safety clearance above arc

chamber• NW : not required• NT : D/O no, Fixed reduced

Removable for contact inspection

NT NW


Opening of contacts

Commutation principle

Contact pads protected from the electric arc for better performance

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ContentsMicrologic socket

Mitop trip solenoid

Making current release (DINF)

NW Interface

Trip alarm contact

Remote reset

2 contacts module

Communication module

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Mitop trip solenoid

Transforms the trip command into a mechanical operation to open the breaker

Activate the alarm contact (SDE)

NW


Making current release (DINF)

Self protection of the breaker when closing on very high fault current

Standard on all NT and NW breakers

NW


NW Interface

Accessory fixture

• Trip alarm contact SDE 1

• communication module

Auto trip controller :

• Missing trip unit

• security feature

• identical on NT

NW


Alarm trip contactSDE

Trip signalisation on electrical fault (Mitop command)

Standard changeover contact 10A 240V on all NT and NW breakers

Optional : second alarm trip contact SDE 2

• standard or low level

NT NW


Remote reset

Remote reset of a tripped

breaker

• automatic reset of the

mechanical indicator

2 voltages :

• 110 / 130 V AC

• 200 / 240 V AC

Exclusive with the second SDE

NT NW


2 contacts module M2C

programmable contacts :

• to energize bell or visual

alarms

• to shed and reconnect non

priority circuits …

2 closing contacts

10 A 240V AC

Monitored by

Micrologic P et H

M6C : 6 programmable

contacts in external DIN case

NT NW


Communication module

Independent modules Breaker module

• data transmission

• threshold adjustment

• breaker status

• breaker monitoring

• breaker identification

• wave form capture

• readings of histories & logs Chassis module

• transmission of « connected, test, disconnected » positions

NT

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ContentsAuxiliaries and accessories

Electrical operating mechanism

Voltage releases

Auxiliaries connection block

support

« OF » auxiliary switches

« Ready to close » contact

Locking accessories and BPFE

Control unit

Operation counter

Front cover

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Electrical operating mechanism MCH

Charges and automatically recharges the stored-energy spring upon breaker closing

AC • 50 / 60 Hz• 100V to 480V CA• 7 references

DC• 24V to 250V • 4 references

Charging time : 4 s maxi Easy installation : 1 screw Local and remote signalisation

of « spring charged »• mechanical indicator

«charged»• Changeover contact 10A 240V

NT NW


Voltage releases

Closing (XF) & opening (MX) coils

• AC 50/ 60 Hz– from 12V to 525V – 8 references – Com compatible 12 to

480V• DC

– from 24V to 250 V– 4 references

Security opening coils MN and MNR

• AC 50/ 60 Hz– from 24 to 525V – 7 references

• DC – from 24V to 250 V– 5 references

NT NW


NW Auxiliaries connection block support

Allows the fixation of auxiliary connectors

• MN or MX2

• MX1

• XF

• PF

• MCH

Supports the « OF » changeover switch block

NW


OF auxiliary switches

NW • standard : block of 4 OF

contacts• optional :2 additional blocks• changeover contact 10A 480V

low level compatible • simplified mounting : 2 screws• rotative contacts directly

operated by mechanism NT

• standard :4 OF contacts• identical to Compact NS• changeover switch 6A 480V• optional : low level contact

5A 480V• clip on type

NT NW


Ready to close contact PF

Changeover contact 10A 240V

Indicates :

• the breaker is open

• the stored energy mechanism is charged

• the mechanism is correctly reset

• the breaker opening push button is not locked

• no opening order is present

NT


Installation ofMicrologic socket

Left side

The socket supports

• communication module

• Micrologic control unit

NW


« open » position breaker locking

NW

• key locking :1 or 2 locks

• padlocking : up to 3 padlocks

• electrical closing pushbutton (BPFE) available on support

NT

• key locking :1lock

• padlocking : up to 3 padlocks

Locks

• Ronis, Profalux, Castel

NT NW


Micrologiccontrol units

4 protection levels

• LI, LSI, LSIG, LSIV Combined with 3 measurement levels

• A : current

• P : A + voltage + power + energy

• H : P + energy quality management (harmonics) Available functions

• monitoring and protection

• measure

• network monitoring

• maintenance help


Micrologiccontrol units

Common to all NT and NW breakers

CT rating / performance socket

• breaker rating

• breaking capacity (N1, H1, H2, H3, L1)

Circuit breaker is maintained in open position when control unit is missing

Interchangeable on site

NT NW


secondary wiring support control unit and « com » module

NW • Communication• ZSI• External neutral• Earth leakage protection (vigi)• Control unit external 24V

voltage supply• External voltage (phases and

neutral)• Programmable contacts M2C

or M6C NT

• identical except external voltage exclusive with M2C/M6C

NWNT


Operation counter

Sums the number of

operating cycles

(closing /opening)

maintenance help

Easy installation

Visible on the front panel

NW


Front cover

Front cover installed

provides double insulation

IP 20 : finger safe

Attractive design

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NT NW


ContentsDrawout installation

Drawout accessories

Chassis

Auxiliaries terminals

Extracting the rail

Racking sequence

Primary connectors

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Masterpact NTLateral side panels

Supports breaker on rails

Carrying handles

Easy installation with 4

screws

NT


Drawout connectors

Connection between beaker and chassis

Connectors

• Vertically oriented for optimal heat dissipation

NT NW

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Chassis

Back mold

Clusters

Shutters

Positions

Secondary terminals

Breaker installation


Back mold

Support interface

• primary clusters

• customer bus connection point

Location of the shutters

NW


Chassis assembly

Arc chute cover installed as standard

2 sizes of chassis

• 800 A - 4000 A

• 4000 A - 6300 A

2 variants

• 3P

• 4P

NT NW


Clusters

One fits all !

Vertical orientation for better heat dissipation

10 fingers on each cluster across the entire range

Clip on type

Number of clusters depends on breaker frame size

NT NW


Shutters actuator

Reversible

• upper and lower

Quick installation

Controlled by rear of breaker

NW


Safety shutter installation

Safety shutters « up » and « down » identical but independent

Shutter locking

• NW

– in front of the chassis

– on the primary stabs

• NT

– on the primary stabs only

NWNT


Chassis position contactsConnected - test - disconnected

NW

• 3 changeover contacts 10A 240V for each position

• activated by actuators

• Possible to replace the test and disconnected actuator by the connected actuator to get 9 CE contacts

NT

• 3 CE, 2 CD, 1 CT

Combined «connected/closed » contacts (EF)

NWNT


Auxiliaries terminals

2 wires from 0,75 to 2,5mm²

Predefined position

Simple identification

Quick connection

Easy installation

NT NW


Auxiliaries cover

Protection of auxiliary wires

Easy identification by tampoprinting

Quick mounting with 2 screws

NT NW

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Extracting the rails and installing the breaker

Interlock must be defeated before removing breaker

Provides guide for breaker

Breaker slides in manually to disconnected position

NT NW

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Racking sequencewith crank handle

Safety

• Automatically opens breaker

before connecting or

disconnecting

• mechanical stop in all

positions

• Push button for releasing

each mechanical stop

NT NW

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Primary connectors

Connector options

Rear connectors

Mixed connectors

Front connectors

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NW connector options

Rear connectors• NW 08- 32 & NW40b- 50

– Al (800 - 2000)– Cu (2500 - 5000)– vertical or horizontal

• NW 40 & NW 63– specific rear

connectors

Front connectors– Al (800 - 1600)– Cu (2000 - 3200)– thickness : 20 mm for

all connectors– identical top and

bottom connector

NW


NT connector options

Rear connectors• NT 06 - 16• copper 15 mm• identical for fixed and drawout

Front connectors• long connector on top• short connector on bottom

side• copper 15 mm

Options for front or rear connectors

• Spreaders– pole pitch 95 mm

• edgewise terminal extension• additional connectors ( eg: for

cripmled lugs)• identical for fixed and drawout

NT


Primary connectionVertical / horizontal rear

Connectors matched to

breaker size

• NT 06 - 16

• NW 08 - 32

• NW 40b - 63

• pole pitch :70, 115, 230 mm

Specific rear connectors for NW40

• Pole pitch :

– 150 mm horizontal

– 115 mm vertical identical for fixed and

drawout

NT NW


Primary connectionmixed

Without modification of the breaker depth, the primary connectors may be rotated

Mixed connectors

Coupling torque

• on the breaker 16mN

• busbars to primaries 50mN

NT NW


Front connection

NT

• Draw out breaker

– top side : long connectors

– bottom side : short connectors

• spreaders option

– pole pitch : 95 mm

NW

• Front connection limited to 3200 A

• Draw out breaker

– identical top and bottom connectors

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NW


Fixed installation

Support bracket• Vertical or horizontal

mounting up to 4000A Secondary terminals

• 2 wires from 0,75 to 2,5mm²• position predefined• simplified identification • quick connection• simple installation

Rotatable primary connectors• same as draw out breaker

NT NW


Fixed installationFront connection and accessories

NT• Identical top and bottom

connectors – thickness 12 mm

• Accessories – Spreaders

– pole pitch 95 mm– edgewise terminal extension– additional connectors ( eg:

for cripmled lugs)– thickness 12 mm for all

accessories– adaptable on fixed or draw

out NW

– top side: long connectors

– bottom side: short ones

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ContentsRange and performances

General characteristics

NT 3/4P dimensions

NW 3P dimensions

NW 4P dimensions

NT & NW performances

• IcU / Icw

• endurances

Micrologic range

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General characteristics

Insulation voltage : 1000V Impulse withstand voltage : 12kV rated voltage : 690V Specific versions

• Switch

• 1000V AC

• DC

• 400Hz - 16Hz 2/3 Transfer switches

• Manual, remote controlled

• Automatic

• by rods : 2 NT & 2NW

• by cables : 2NT, 1NT+1NW2NW, 3NW


F: 259

D: 322

F: 290

D: 277

3P F: 210 D: 288

4P F: 245 D: 358

Masterpact NT 06 - 16 3P / 4P

Overall dimensions• height and depth fixed

Weight • fixed : 13 / 18 Kg• draw out : 30 / 40 Kg

Neutral Pole• On left by default• protection : 1/2, full, off


Masterpact NW 08-40 & 40b-63 3P

Overall dimensions

• Height and depth fixed

• double poles construction for Masterpact NW 40b-63

Weight

• fixed :

– NW 08 - 40: 60 Kg

– NW 40b - 63 : 120 Kg

• draw out :

– NW 08 - 40: 90 Kg

– NW 40b - 63 : 225 Kg pole pitch :

• 115 mm / 230 mm

F: 352

D: 439

F: 297

D: 394

F: 422 D: 441

F: 297

D: 394

F: 352

D: 479

F: 774 D: 786


Masterpact NW 08-40 & 40b-63 4P

Neutral pole

• on left as default

• protection : 1/2, full, off Overall dimensions

• Height and depth fixed

• double poles construction for Masterpact NW 40b-63

weight • fixed

– NW 08 - 40: 80 Kg– NW 40b - 63 : 160 Kg

• draw out :– NW 08 - 40: 120 Kg– NW 40b - 63 : 300 Kg

F: 352

D: 439

F: 297

D: 394

F: 544 D: 556

F: 297

D: 394

F: 352

D: 479

F: 997 D: 1016


Icw (0,5 s)

Rating (A) kA

L1 630 - 1000 10

H1 630 - 1600 42

H1H1

L1L1

Masterpact NT Performances 220V to 440V


Icw (1s)

Rating (A) kA

L1 800 - 2000 30

H3 2000 - 4000 65

H2 800 - 4000 85

4000 - 6300 100

H1 800 - 4000 65

4000 - 6300 100

N1 800 - 1600 42N1N1H1H1

H2H2H3H3L1L1

Masterpact NW Performances 220V to 440V


PerformancesNT & NW endurance

01

23

456

789

10

8 à16

20 25 32 40 40 50 63

NT NW

0

5

10

15

20

25

08 - 16 20 - 32 40 40b - 630

NTNW

0

2

4

6

8

10

12

14

08 - 16 20 - 32 40 40b - 630

NTNW

Mechanical endurance :

Electrical endurance :

With maintenance Without maintenance

Without maintenance N

bre

de

cycl

es (

x100

0)

Nb

re d

e cy

cle

(x10

00)


Micrologic range

Micrologic 2. 0 A

Measurement type versionCurrent protection type

ACurrent protection type

2 : Distribution L, I

5 : Selective L, S, I

6: Selective and ground fault L, S, I, G

7 : Selective and earth leakage L, S, I, V

P H

2.0 A

5.0 A

6.0 A

7.0 A

5.0 P

6.0 P

7.0 P

5.0 H

6.0 H

7.0 H

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Things will never be the same

understanding masterpact nt & nw nw breaker frame micrologic socket auxiliaries and accessories...

Documents

nw breakers nw slide

alarm contact sde nw

moving contact slide

arc chamber nw

nw breakers optional

performances slide

halogen slide

contents nw breaker