10
4.3.1. General characteristics of
fixed circuit-breakers Vmax
D
H
W
I
I
Standard fittings for fixed circuit-breakers
The basic versions of the fixed circuit-breakers are three-pole
and fitted with:
– EL type manual operating mechanism
– mechanical signalling device for closing springs charged/
discharged
– mechanical signalling device for circuit-breaker open/closed
– closing pushbutton
– opening pushbutton
– operation counter
– set of ten circuit-breaker open/closed auxiliary contacts
Note: application of the shunt opening release and/or
additional shunt opening release foresees the use of one
or two auxiliary make contacts (normally open), thereby
reducing the number of auxiliary contacts available.
– lever for manual closing spring charging
– auxiliary circuit support terminal board
Circuit-breaker Vmax 15
Fixed version
•
Standards
IEC 62271-100 •
CEI EN62271-100 (file 7642) •
C37.54 - C37.09 - C37.04 - C37.55 •
UL Recognized Component Mark •
Rated voltage Ur [kV] 15
Rated insulation voltage Us [kV] 15
Withstand voltage at 50 Hz Ud (1 min) [kV] 36 (at 60 Hz)
Impulse withstand voltage Up [kV] 95
Rated frequency fr [Hz] 60
Rated normal current (40 °C) Ir [A] 1200
Rated breaking capacity
(rated symmetrical short-circuit current)
Isc [kA]
25 (3 cycles)
31.5 (3 cycles)
Rated-short time withstand current (2s) Ik [kA]
25
31.5
Making capacity Ip [kA]
65
82
Operation sequence
[O - 0.3” - CO - 15” - CO] –
[O - 0.3” - CO - 3’ - CO] •
Opening time [ms] 27 ... 32.5
Arc duration [ms] 10 ... 17.5
Total interruption time [ms] <50
Closing time [ms] 45 ... 80
Maximum
overall dimensions
H [mm/in] 534/21.02
W [mm/in] 416/16.38
D [mm/in] 456/17.95
Pole centre I [mm/in] 133/5.24
Weight [kg/lb] 77/169.40
Standardized table of dimensions 1VCD003279
Operating temperature [°C] -30 ... +40
Tropicalization IEC: 60068-2-30, 60721-2-1 –
Electromagnetic compatibility IEC 62271-1
–
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