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Prescription – Tarek Ismail - 12/04 2
Agenda
MCCB offer• Easypact
• Compact NS
ACB offer
• Masterpact NT
•Masterpact NW
Prescription – Tarek Ismail - 12/04 3
IEC 947-2 Definitions
In : Rated current
Ue : Rated operational voltage
Ui : Rated insulation voltage
Uimp : Rated impulse withstand
Icu : Rated ultimate short circuit breaking capacity
Ics : Rated service short circuit breaking capacity
Icw : Rated short circuit withstand capacity
Cat A & Cat B circuit breakers
Prescription – Tarek Ismail - 12/04 4
IEC 947-2 Definitions
Disconnector Circuit Breaker Disconnector-Circuit Breaker
Prescription – Tarek Ismail - 12/04 5
Characteristics of circuit breakers
Rated current & ambient temperature
Number of poles Cascading
Continuity of service : Selectivity Withdrawability
Trip unit ( TM & Electronic)
Accessories & Interlocking
Mechanical & electrical endurance
Network monitoring (Communication)
Prescription – Tarek Ismail - 12/04 6
Basic parts of a circuit breaker
Switching device- Arc chamber- Fixed contact- Moving contact- Spring
Trip unit- Thermal-Magnetic trip unit- Solid state trip unit
Prescription – Tarek Ismail - 12/04 7
Function of a circuit breaker
To switch on/off the circuit
Protection against :-- Over load- Short circuit
- Earth leakage
To guarantee :-- The dependability of your installation- The safety of the end-user and equipment’s
Prescription – Tarek Ismail - 12/04 8
How to choose a breaker ?
Basic Criteria- Rating ( U , I )
- Breaking capacity - Number of poles (Neutral distribution system)- IEC Standard- Type of Load to be protected :-(Generator , Motor , Direct current ,………ect.)
Prescription – Tarek Ismail - 12/04 9
How to choose a breaker ?
2 - “ Continuity of service “ Criteria - Selectivity - Withdrawability - Maintainability
3 - “ Performing “ Criteria- Cascading ( limitation of current )- Reverse feeding without reduction in performance
Prescription – Tarek Ismail - 12/04 10
How to choose a breaker ?
4 - “ Comfort “ Criteria- Simple to install , easy to work with .
- Field installable accessories ( e.g Timers , push buttton , impulse relays , ……ect. In Multi9 products )
- work monitoring and communication .
Prescription – Tarek Ismail - 12/04 11
Current Limitation
• The aim :
• To limit the fault current crossing downstream the breaker
• Advantage :
To reduce :
• Electromagnetic effects ( Measurements )
• Mechanical stresses ( Bas bars )
• Thermal effects ( Conductors )
Prescription – Tarek Ismail - 12/04 12
Cascading
• Cascading is the use of current limiting capacity of the circuit breaker to permit installation of lower rated and therefore lower cost down stream the breaker .
• Cascading advantages :-
• Reduce C.B cost
• Reduce mechanical effect ( Bas bars )
• Reduce thermal effects ( Cables )
• Reduce electromagnetic effect ( Measuring devices )
Cascading = Reduction of the installation cost
Prescription – Tarek Ismail - 12/04 16
MCCB offer presentation
New EasyPact up to 100A
New Compact NS up to 3200A
Prescription – Tarek Ismail - 12/04 21
New...MCCB Compact NS From 100 to 3200 A range
4 volumes from 100 to 3200 A
4 sizes from 25 to 150 kA
NS 80 H-MA
NS 400 to 630
NS 100 to 250
NS 630b to 1600
NS 1600b to 3200For
Motors
Prescription – Tarek Ismail - 12/04 22
New breaking technology roto-active breaking
0531
00
E62
669
E62
670
Fixed contact
Breakingenclosure
Breakingchamber
Breakingchamber
Mobile contact
Fixed contact
Piston
Short-circuit current
Breaking chamber
Arc
Arc
New breaking technology roto-active breaking pressure (“reflex” tripping)
E62
670
E62
669
Fixed contact
Breakingenclosure
Breakingchamber
Breakingchamber
Mobile contact
Fixed contact
Piston
Short-circuit current
Breaking chamberBreaking chamber
Short-circuit current
Provides an exceptional limiting capacity
Fixed contact
Breakingenclosure
Breakingchamber
Breakingchamber
Mobile contact
Fixed contact
E62
670
E62
669
Piston
Compact NS power distribution
Prescription – Tarek Ismail - 12/04 23
Icu and Ics performance
Category A Category B
L
H
N
150
100 160 250
70
3636
1600b 2000 2500 3200
85
70
630b 800 1000 1250 1600
50
70
150
Icu (kA) 380 / 415 V
400 630
50
150
70
100 %
Ics performance as Icu %
100 %
100 %
100 %
100 %
100 %
100 %
50 %
75 %
75 %
100 %
Prescription – Tarek Ismail - 12/04 24
The protection trip units
STR 43 ME, STR 53 UE electronic
DC specific
Micrologic units
NS 100 to 250 NS 400 to 630
STR 22 SE,STR 22 ME, STR 22 GE
electronic
TM thermal magnetic STR 23 electronic
NS 1600b to 3200NS 630b to 1600
Prescription – Tarek Ismail - 12/04 25
Auxiliaries and accessories NS 100 to 630
Electrical auxiliaries Auxiliary contacts Rotary handle
Motor mechanism Locking Connection Measurement module
Prescription – Tarek Ismail - 12/04 26
NS 630b to NS 3200: Extension to the existing Compact NS range
2P/3P/4P, Fixed / withdrawable up to 1600 A manual operation remote control up to 1600 A
Compact NS up to 3200ACompact NS up to 1600A
Prescription – Tarek Ismail - 12/04 27
315
1403P : 2104P : 280 160
3P : 4204P : 535
350
Optimized dimensions fixed version
Compact NSup to 1600A
Compact NSup to 3200A
Prescription – Tarek Ismail - 12/04 28
Auxiliaries and accessories NS 630b to 1600 A
Electrical auxiliaries Auxiliary contacts Rotary handle Spreader Lead-seal cover
Motor mechanism Locking Operation counter Connection
Prescription – Tarek Ismail - 12/04 29
Auxiliaries and accessories NS 1600b to 3200 A
Electrical auxiliaries Auxiliary contacts Locking Connection
Compact NS vid
Prescription – Tarek Ismail - 12/04 30
Agenda
MCCB offer• Easypact
• Compact NS
ACB offer
• Masterpact NT
• Masterpact NW
Prescription – Tarek Ismail - 12/04 31
Masterpact NTup to 1600A
Masterpact NWup to 6300A
479
395 3P : 786 4P : 1016
Masterpact NWup to 4000A
439322
3P : 288 4P : 358
278 3953P : 4414P : 556
439
The smallest in the world
Masterpact…The New Air ciruit breaker
4000 Arating
2 families, 3 sizes
Prescription – Tarek Ismail - 12/04 32
Masterpact NT: Icu & Icw performance
L1
H1
630 800 1000 1250 1600
42
150
Icu (kA) 220 / 415 V
2 levels of performance for each
L1
H1
630 800 1000 1250 1600
42
10
Icw (kA) / 0.5 s
Prescription – Tarek Ismail - 12/04 33
Masterpact NW: Icu performance
H2 100
800
H1
N1
1000 1250 1600 2000 3200 4000 5000 6300
65
42
100
150
Icu (kA) 220 / 415 V
H3
L1
150
150
2500
5 levels of performance
Prescription – Tarek Ismail - 12/04 35
Reduced number of Spare parts
296 69 réf.
Aux. Switches
Coils
Motor mechanism
Control units
Accessories for
connection
C801/1251, CMMasterpact M
Compact NS 630b – 3200Masterpact NT - NW
15 réf. 3 réf.
130 réf. 17 réf.
58 réf. 16 réf.
33 réf. 13 réf.
60 réf. 20 réf.
Prescription – Tarek Ismail - 12/04 36
Total discrimination with all MG circuit breakers
Multi 9
NS 160
NS - NT 800
NT - NW 1600
NS 400
NS 100
NS 250
NS 630
NS 1250
Increased continuity of supply
2 to 2.5 ratio between ratings
Prescription – Tarek Ismail - 12/04 37
Innovations
Metallic filters
Current sensors
Connectors
Trip unit
Prescription – Tarek Ismail - 12/04 38
Metallic filters on Masterpact NT and NW
Merlin Gerin solutions :
High technology 3 D metallic material
6 different materials have been intensively tested
Reduction of the safety perimeters to nearly zero (no
or very few ionized gas outside the arc chutes)
Problems of breaking a high current :
High temperature ionized gas (4000°C to 12 000°C) burning particles projections Installation constraints
Prescription – Tarek Ismail - 12/04 39
Existing technology
Advantages Drawbacks
Iron CT Enough power to supply the Trip Unit
One CT for every rating due to high saturation Measurement is not accurate
Rogowski toroid Air CT
Unlimited range of measurement High accuracy
Very low power delivered, not able to supply the control unit
Current sensors …(existing solutions)
Functions: 1- Supply the control units 2- Current measurement
Prescription – Tarek Ismail - 12/04 40
Dual air/iron sensors
Reduced number of the sensors (one fits all ratings from 400 to
3200A)
Current sensors …( Merlin Gerin solution )
Prescription – Tarek Ismail - 12/04 41
Merlin Gerin universal connectors … A new concept
Complete unit = Unit without terminal + connector kit
Field installation Flexibility right on time of the installation
front
rear : horizontal or vertical with 2 position terminal
mixed
Prescription – Tarek Ismail - 12/04 42
Zero safety perimeter
H3 : High discrimationIcu =IcsIcw =65kA
High performance : 150kA at 440V
High endurance : up to10 000 electrical cycles without maintenance
Masterpact… a differentiated Air circuit breaker
Safety of racking operation :positive stop in the 3 positions
Masterpact vid
Full rating up to 50°C rear vertical
50°C
Prescription – Tarek Ismail - 12/04 43
Micrologic : a new range of intelligent control units
Microprocessor based Levels of protection
LI, LSI, LSIG,LSIV Types of metering
A (current), P (power), H (harmonics)
Functions : Load protection network measurement network monitoring
With communication capability
Prescription – Tarek Ismail - 12/04 44
A comphehensive range of control units
Micrologic 2. 0 A
type of measurement versiontype of current protection
Types of current protection
2: Distribution L, I
5: Selective L, S, I
6: Selective and ground-fault protection L, S, I, G
7: Selective with earth-leakage protection L, S, I, V
Types of measurements
W/O A P H
2.0 2.0 A
5.0 5.0 A 5.0 P 5.0 H
6.0 A 6.0 P 6.0 H
7.0 A 7.0 P 7.0 H
Prescription – Tarek Ismail - 12/04 45
Standard characteristics for the whole range
Control unit interchangeable on site
Sealable front cover
Test socket
pre-trip alarm
Micrologic vid
Standard for MCCB Standard for ACB