1. Eaton Circuit Breakers (Cont.’d)
& Eaton Type Tested Assembly (X-Energy)
Technical Training
Prepared by: Eng. Ahmed Lotfy
(BO Technical Director and Factory Manager)
Barkouky Organization (BO)
(EATON) SYSTEM INTEGRATOR - EGYPT
Circuit Breakers and (TTA) X-Energy
Technical Training

2. ۲
Training Contents:
1. Eaton LV MCCB’s : Types and Selection
1.1: NZM & LZM (What is the difference?)
1.2: Circuit-Breaker or Switch Disconnector?
1.3: Switching Capacity at 415 VAC
1.4: Key to Type References
1.5: Samples of the Trip Units
2. Eaton Type Tested Assembly (TTA) X-Energy
2.1: Type Tests
2.2: Routine Tests
2.3: An Intelligent System from Eaton (5 Basic Types)
2.4: XP Power Section
Circuit Breakers and (TTA) X-Energy
Technical Training

3. ۳
1. Eaton LV MCCB’s : Types and Selection
Circuit Breakers and (TTA) X-Energy
Technical Training

4. ٤
Circuit Breakers and (TTA) X-Energy
Technical Training
IEC Range Approvals–NZM

5. ٥
Circuit Breakers and (TTA) X-Energy
Technical Training
IEC Range Approvals–LZM

6. ٦
Circuit Breakers and (TTA) X-Energy
Technical Training
NZM
PN
N
Breaker or Switch Disconnector-Circuit

7. ۷
Circuit Breakers and (TTA) X-Energy
Technical Training
25 kA
50 kA
100 kA
150 kA
36 kA
B
1 / 2
C
1 / 2 / 3
N
1 / 2
3 / 4
VAC415Switching Capacity at
H
1 / 4
2 / 3

8. ۸
Circuit Breakers and (TTA) X-Energy
Technical Training
Frame size: 1 - up to 160A
2 - up to 300A
3 - up to 630A
4 - up to 1600A
Switching capacity: B - Basic 25kA
415 V C - Comfort 36kA
N - Normal 50kA
H - High 150 / 100 / 85kA
Designation: NZM - Circuit-breaker
N - Switch-disconnector, with release function
PN - Switch-disconnector, without release funct.
NZM B 2 - 4 -A 200
Key to Type References

9. ۹
Trip release: A - distribution circuit protect., thermomagnetic
AE - distribution circuit protection, electronic
M - motor protection, thermomagnetic
ME - motor protection, electronic
S - motor protection without overload release
VE - selective (discriminitive) and generator
protection, electronic
Rated uninterrupted current: 20A to 1600A
Circuit Breakers and (TTA) X-Energy
Technical Training
Number of poles: - - 3-pole
-4- - 4-pole
NZM B 2 - 4 -A 200
Key to Type References (Cont.’d)

10. ۱۰
Ir = 0,8...1 x In
Ii = 6...10 x In
Ir = 0,5...1 x In
Ii = 2...12 x In
Trip Unit type (A)
distribution circuit protection
Thermo-Magnetic (TM)
Trip Unit type (AE)
distribution circuit protection
Electronic
Circuit Breakers and (TTA) X-Energy
Technical Training
Samples of the Trip Units

11. ۱۱
Ir = 0,8...1 x In
Ii = 8...14 x In
Ir = 0,5...1 x In
Ii = 2...14 x In
tr = 2...20s
Trip Unit type (M)
Motor protection
Thermo-Magnetic (TM)
Trip Unit type (ME)
Motor protection
Electronic
Circuit Breakers and (TTA) X-Energy
Technical Training

12. ۱۲
overload Ir
0,5 – 1,0
adjustable delayed
short-circuit release: Isd 2- 10
non-delayed
short-circuit release : Ii 2- 12
adjustable time-lag class
(heavy starting) tr 2 – 20 sec
Infinite ( without bimetal )
adjustable delay time
tsd 0 – 1000 ms
switchable I2t constant function
I²t : on or off
Selective Electronic Release type (VE)
Circuit Breakers and (TTA) X-Energy
Technical Training

13. ۱۳
2. Eaton Type Tested Assembly (TTA) X-Energy
Circuit Breakers and (TTA) X-Energy
Technical Training

14. ۱٤
Circuit Breakers and (TTA) X-Energy
Technical Training

15. ۱٥
Type Tests
Type tests are intended to verify compliance with the requirements of IEC 60439-1
Type tests will be carried out on a sample of such an ASSEMBLY or on such parts
of ASSEMBLIES manufactured to the same or a similar design. They shall be
carried out on the initiative of the manufacturer.
1. Verification of the temperature-rise limits
2. Verification of dielectric properties
3. Verification of the short-circuit withstand strength
4. Verification of the effectiveness of the protective
circuit
5. Verification of clearances and creepage distances
6. Verification of mechanical operation
7. Verification of degree of protection
Circuit Breakers and (TTA) X-Energy
Technical Training

16. ۱٦
Routine Tests
Routine tests are intended to detect faults in
materials and workmanship. They are carried
out on every new ASSEMBLY after it has been
assembled or on each transport unit. Another
routine test at the place of installation is
not required.
Routine tests include:
1. Inspection of the ASSEMBLY including
inspection of wiring and, if necessary, electrical
operation test.
2. Dielectric test
3. Checking of protective measures and of the
electrical continuity of the protective circuit
Circuit Breakers and (TTA) X-Energy
Technical Training

17. ۱۷
An Intelligent System from Eaton
XP Power sections
XG section
Fixed
Withdrawable
XF Outgoing sections
5 Basic types
XW Outgoing sections
XR Outgoing sections
Removable
New
General
Circuit Breakers and (TTA) X-Energy
Technical Training

18. ۱۸
• XP Power Section
IZMX16
630 - 1600A
IZM20
800 - 2000A
IZM32
800 - 3200A
IZM40
4000A
IZM63
4000 - 5000A
Circuit Breakers and (TTA) X-Energy
Technical Training

19. ۱۹
• XP Power Section (Cont.‘d)
Feeders / Outgoers / Connections
Compact Circuit Breaker
• 3 or 4-pole
• Fixed
• Withdrawable
NZM3
125 - 630A
Circuit Breakers and (TTA) X-Energy
Technical Training

20. ۲۰
End of Training for Today (DEC.,17,2014) …..
Thanks for your attention…
Eng. Ahmed Lotfy
(BO Technical Director and Factory Manager)
Circuit Breakers and (TTA) X-Energy
Technical Training