The document discusses innovations on Masterpact circuit breakers from Schneider Electric. It summarizes that Masterpact breakers have a unique basic platform that can be used for all CEI, UL, and ANSI breakers. It also discusses over 60 patented solutions for the breakers. Specific innovations mentioned include reduced number of parts, universal connectors, segregated control unit functions, interfaces for control units, metallic filters, current sensors, combined auxiliary switches, reduced sizes for accessories and coils, and increased ratings and endurances.

1. Innovations on Masterpact

2.  One unique basic platform
• for all CEI, UL, ANSI
Schneider Electric breakers
 Innovations
More than 60 original
patented solutions

3. Innovations - 08/99 - DBTP214EN 3
Contents
Construction
 Main contact assembly
and frame sizes
 Reduced number of parts
 Universal connectors …
…a new concept
 Control units
 Interface for the control
unit
 Points that make the
differences
Return to general contents
Construction

4. Innovations - 08/99 - DBTP214EN 4
Main contact assembly and frame sizes
800 – 3200A 4000A 5000A 6300A
Masterpact
3P
4P
NW
3P
4P
M
Construction

5. Innovations - 08/99 - DBTP214EN 5
Reduced number of parts
example on IEC offer
 296  69 réf.
 Aux. switches
 Coils
 Motor
mechanism
 Control units
 Accessories for
connection
C801/1251, CM
Masterpact M
Compact NS 630b – 3200
Masterpact NT - NW
15 réf. 3 réf.
130 réf. 17 réf.
58 réf. 16 réf.
33 réf. 13 réf.
60 réf. 20 réf.
Construction

6. Innovations - 08/99 - DBTP214EN 6
Universal connectors...
…a new concept
 Complete unit
=
 Unit without terminal
+
 connector kit
• Field installation
• no added price for vertical
connection
• Flexibility right on time of
the installation
Construction

7. Innovations - 08/99 - DBTP214EN 7
Segregated functions of the Micrologic control
unit
 Principle
• Basic protection functions
are supplied by the fault
itself
• Added protection functions
are segregated and do not
interfere with the basic
protection
• Communication modules
are independent from the
control unit
Construction

8. Innovations - 08/99 - DBTP214EN 8
Micrologic power supply
Circuit breaker Micrologic Communication module
Basic protection
Trip unit
power supply
Additional functions
(measurement,
analyses...)
Power supply
COM Module
Optical
coupling
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 or
optional external voltage sensor for
µP power supply and measurement
ASIC Microprocessor
BUS power supply
Construction

9. Innovations - 08/99 - DBTP214EN 9
Interface for the control unit :
CT and performances plug
 A main plug is connected to the
basic unit to set the characteristics
of the breaker and allow the
interchangeability of the control
unit
• The main plug is set with the CT
rating and limits the rating of the
breaker to the capacity of the
copper circuit
• The secondary plug is set with the
breaker performances N1, H1, H2,
H3, L1(DIN/DINF)
 The control unit reads the
information on this interface
Construction

10. Innovations - 08/99 - DBTP214EN 1
0
Points that make the differences
Masterpact NW/NT versus Masterpact M
 Secondary disconnects
arranged by modules
 NT and Compact NS:
interchangeable mechanisms
on a same case
 Automatic unlatching
mechanism for high speed
opening NW
 Modular vertical clusters
 Common and interchangeable
control units for the whole
range
 Micrologic with the VIGI
function
 ANSI version
Return to contents
Construction

11. Innovations - 08/99 - DBTP214EN 1
1
Return to general contents
Contents
Innovations
 Current limitation on Masterpact NW
 Current limitation on Masterpact NT and
Compact NS 630b- 32000
 Performances
 Metallic filters
 Current sensors
 Auxiliary switches
 Contacts combined
 Masterpact NT size
 Reduced sizes for
accessories and coils

12. Innovations - 08/99 - DBTP214EN 1
2
Innovations
Current limitation on Masterpact NW
ANSI 200kA & UL-CEI 150kA
 Higher short circuit ratings.
 No more fuses needed for
200KA(USA).
 Selective coordination
at any level
• N1& H1 total
• H2 & H3 up to 65kA
• L1 up to 30kA
200kA ANSI
Icc
150kA CEI
130kA CEI
t

13. Innovations - 08/99 - DBTP214EN 1
3
Current limitation on Masterpact NT &
Compact NS 630b/1600 150kA
 630A, 800A, 1000A
 One size only
• No added block
 Ics = 100%Icu
 25kA / 690V
Innovations

14. Innovations - 08/99 - DBTP214EN 1
4
Endurances
0
1
2
3
4
5
6
7
8
9
10
8
to16
20
25
32
40
40
50
63
M
NW
0
5
10
15
20
25
08 - 16 20 - 32 40 40b - 630
M
NW
0
2
4
6
8
10
12
14
08 - 16 20 - 32 40 40b - 630
M
NW
 Mechanical:
• increased by 25%
 Electrical:
With maintenance Without maintenance
Without maintenace
Nber
of
cycles
(x1000)
Nber
of
cycle
(x1000)
Innovations

15. Innovations - 08/99 - DBTP214EN 1
5
Short circuit ratings Icu kA
 New H3 : the «unlatched» breaker
 H1 - H2 : standardized ratings
H1
65
65
65
 220/415V
 440V
 690V
L1
130 150
110 150
65 100
H2
100
100
85
L1
130 150
110 150
65 100
H2
100
100
85
H3
150
150
100
H2
100
100
85
H1
65
65
65
N1
42
42
42
800/1600A 2000A 2500/4000A
H1
65
65
65
H3
150
150
100
Innovations

16. Innovations - 08/99 - DBTP214EN 1
6
 H3 & L1 The new automatic unlatching mechanism for a better selective
coordination
 H3: selectivity up to 65 kA RMS - Icu 150kA
 L1: selectivity up to 30 kA RMS - Icu 150kA
Short time ratings Icw (kA)
H2
75 85
75 85
75
H2
75 85
75 85
75
H3
65
65
65
H3
65
65
65
H1
65
50 65
36
N1
42
30 42
22
800/1600A 2000A 2500/4000A
H1
65
65
36
H1
65
65
65
H2
65 85
50 85
32 75
L1
17 30
17 30
17 30
L1
17 30
17 30
17 30
0,5s
1s
3 s
Innovations

17. Innovations - 08/99 - DBTP214EN 1
7
Short circuit ratings Icu kA
 220/415V
 440V
 690V
H1
100
100
85 100
H2
150
150
85 100
4000A - 5000A - 6300A
Innovations

18. Innovations - 08/99 - DBTP214EN 1
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Short time ratings Icw (kA)
 Selectivity up to 100KA RMS
 0,5s
 1s
 3s
H1
100
100
100
H2
100
100
100
4000A - 5000A - 6300A
Innovations

19. Innovations - 08/99 - DBTP214EN 1
9
Metallic filters on
Masterpact NT and NW
 Highly reduced external gas and particules
projections
• Breaking a high current produces :
– High temperature ionized gas(4000°C
to 12 000°C)
– burning particles projections.
• Installation constraints:
– Safety perimeters
– Oversized enclosures to withstand
overpressures
Innovations

20. Innovations - 08/99 - DBTP214EN 2
0
Metallic filters on
Masterpact NT et NW
 High technology 3 D metallic material
• 6 different materials have been
intensively tested
• Excellent results with:
– High reduction of overpressures
inside the enclosure
– Reduction of the safety perimeters
to nearly zero (no or very few
ionized gas outside the arc chutes)
Innovations

21. Innovations - 08/99 - DBTP214EN 2
1
Existing
technology
Advantages Drawbacks
Iron CT Enough power to supply the
ASIC
One CT for every rating due to
high saturation
Measurement is not accurate
(1st wave, harmonics, high
current)
Rogowski toroid
Air CT
Unlimited range of
measurement
High accuracy including the first
wave, harmonics and high
currents
Very low power delivered, not
able to supply the control unit
Current sensors
 2 functions: supply the control units and give current measurement
Innovations

22. Innovations - 08/99 - DBTP214EN 2
2
Current sensors
 Dual air/iron sensors
• Iron CT’s with magnetic shunt
– Power supply
– Bring the necessary energy
whatever the primary current
• Rogowski air CT’s
– Give current measurement
• Cost effective thanks to:
– Reduced size of the iron CT
– Reduced number of the sensors
(one fits all ratings from 400 to
3200A)
Innovations

23. Innovations - 08/99 - DBTP214EN 2
3
Auxiliary switches OF
F 0
S2
S1
e
Innovations

24. Innovations - 08/99 - DBTP214EN 2
4
Dual functions
combined switches EF
F 0
S2
S1
e
E
D
Innovations

25. Innovations - 08/99 - DBTP214EN 2
5
Masterpact NT size
 The world smallest 1600A breaker
• 50% reduction compared to M16
• Miniature Masterpact
 70 mm pole pitch,
• Same as Compact NS
•
 Side mounted racking mechanism
Innovations

26. Innovations - 08/99 - DBTP214EN 2
6
Reduced size for
accessories and auxiliaries
Control unit
Coils Auxiliary switches
Motor mechanism
Return to contents
Innovations