Alstom GL314 - Technical Characteristics

Technical data
Technical characteristics
L10--006EN/02
1/2
08--2000
E ALSTOM
GL314 technical characteristics
Performances
The table below gives the circuit--breaker performances :
Designation
GL314
U
r
Rated voltage (r.m.s. value) kV 245 242
Standard IEC ANSI
I
r
Rated normal current A 3150 3150
f
r
Rated frequency Hz 50 60 60
I
p
Rated withstand current (peak value) kA 100 108 108
I
k
Short-- time withstand current (r.m.s. value) kA 40
Rated insulation level
(At sea level)
U
d
Rated short--duration power--frequency withstand
voltage
(r .m.s. value)
D Phase--to--earth and phase--to--phase kV 460 425
D Across open contacts kV 460 425
U
p
Rated lightning impulse withstand voltage (peak
value)
D Phase--to--earth and phase--to--phase kV 1050 900
D Across open contacts kV 1050 900
I
sc
Rated breaking current in symmetrical short--
circuit
kA 40
Rated making current (peak value) kA 100 108 108
Total break time ms 40 2
Rated operating sequence
C O -- 1 5 s -- C O
or
O--0.3s--CO--3min--CO
Resistance of main contacts
(new contact)
←τ
chamber without H.V. connectors
 55
The above characteristics are of a general nature, only those values given on
the circuit--breaker’s rating plates are contractually binding.
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