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 –
