Siemens NXPLUS C User Manual

802-9081.9 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • Revision 11 77/293
Description
10.11 Endurance classes
The switching devices of NXPLUS C switchgear conform to the classes according to IEC 62271-
100, -102 and -103.
Overview
Circuit-breaker (standard)
Circuit-breaker up to 15 kV, 31.5 kA, 1250 A (option)
Three-position disconnector (standard)
Three-position disconnector up to 15 kV, 31.5 kA, 1250 A (option)
Panel type Circuit-breaker Disconnector Switch-disconnector Earthing switch
Circuit-breaker panel M2 M1
E2
1
1
By closing the circuit-breaker
E2
C2
Bus sectionalizer panel M2 M1
E2
1
E2
C2
Disconnector panel M1 E0
Vacuum contactor
panel
2
2
For the switching device "vacuum contactor", no classes have been defined in the standard.
M1 M1 E3 E2
Transformer panel M0 M1 E3 E2
Ring-main panel M1 M1 E3 E2
Metering panel M1 M1 E3 E2
Function Class Standard Property
BREAKING M2 IEC 62271-100 10000 times mechanically without maintenance
E2 IEC 62271-100 • 10000 times rated normal current
• 50 times rated short-circuit breaking current without
maintenance
C2 IEC 62271-100 Very low probability of restrikes
Function Class Standard Property
BREAKING M2 IEC 62 271-100 30000 times mechanically with maintenance
E2 IEC 62 271-100 30000 times rated normal current
50 times rated short-circuit breaking current
C2 IEC 62 271-100 Very low probability of restrikes
Function Class Standard Property
DISCONNECTING M1 IEC 62271-102 2000 times mechanically
READY-TO-EARTH M0
E0
IEC 62271-102
IEC 62271-102
1000 times mechanically
No making capacity
EARTHING
E2
1
1
The EARTHING function with class E2 is reached by closing the circuit-breaker in combination with
the three-position disconnector (class E0)
IEC 62721-200
IEC 62271-102
50 times rated short-circuit making current I
ma
Function Class Standard Property
DISCONNECTING M1 IEC 62271-102 5000 times mechanically
READY-TO-EARTH M0
E0
IEC 62271-102
IEC 62271-102
5000 times mechanically
No making capacity
EARTHING
E2
1
1
The EARTHING function with class E2 is reached by closing the circuit-breaker in combination with
the three-position disconnector (class E0)
IEC 62721-200
IEC 62271-102
50 times rated short-circuit making current I
ma

Siemens NXPLUS C Specifications

General

Brand	Siemens
Model	NXPLUS C
Category	Circuit breakers
Language	English