Eaton Magnefix MD4 - Page 10

Magnefix MD4
10
991.184 G01 03
type plate (main section) of the fixed part (example)
supplementary type plate (most commonly used) on vacuum circuit-breaker (example)
Variable
Description
unit
(English)
(English)
system
-
-
rel.
release
-
IEC
-
-
serial.no.
Serial number
-
year of constr.
year of construction
-
w.o.no.
work order number
-
U
r
rated voltage
kV
f
r
rated frequency
Hz
I
r
rated normal current
A
I
r T-off
rated normal current
A
switch/circuitbreaker
I
k
rated short time withstand voltage
kA
t
k
rated duration of short-circuit
s
I
p
rated peak withstand current
kA
U
p
rated lightning impulse withstand voltage (peak value)
kV
peak
U
d
rated power frequency withstand voltage
kV
peak
I
ma
rated short-circuit making current
kA
I
sc
rated short-circuit breaking current
kA
I
c
rated cable charging breaking current
A