參數(shù)資料
型號: B88069X1410C103
英文描述: GASENTLADUNGSABLEITER 90V 20KA OHNEDRAHT
中文描述: GASENTLADUNGSABLEITER 90V的20KA OHNEDRAHT
文件頁數(shù): 14/54頁
文件大?。?/td> 6102K
代理商: B88069X1410C103
21
EPCOS AG
Definitionen, Messbedingungen
Definitions, Measuring Conditions
DC spark-over voltage Vsdc
This value is determined by applying
a dc voltage with a low rate of rise
dv/dt = 100 V/s (Fig. 17).
Nominal dc spark-over voltage
VsdcN
This is a rated value used to desig-
nate a surge arrester. The operating
characteristics and tolerances as well
as limit and test values are referred
to VsdcN. It represents the individual
values of the dc spark-over voltage,
which are subject to statistical
variations due to the physical
phenomena of gas discharge.
Tolerance of VsdcN in %
The tolerance is generally specified
as a percentage of VsdcN. Tolerance
specifications take into account
individual and batch variations in
arrester production.
Impulse spark-over voltage vsi
The impulse spark-over voltage
characterizes the dynamic behavior
of a surge arrester. The values
specified in the product part refer to a
voltage rise rate of dv/dt = 100 V/s
and 1 kV/s (Fig. 17).Complete vsi
distribution data is available upon
request.
Nominal impulse discharge
current idiN
Rated discharge current of the
8/20 s wave (Fig. 18).
Requirements of ITU-T and DIN VDE:
10 discharges at intervals of:
ITU-T: no accumulation of the DUT
temperature.
DIN VDE: 1 min
Nominal alternating discharge
current IdaN
Rated rms value of an ac current
at 50 Hz, 1 s.
Requirements of:
ITU-T: 10 discharges (no accumula-
tion of the DUT temperature).
DIN VDE: 5 discharges at intervals
of 3 min
Maximum single-impulse
discharge current
Single loading with an 8/20 s
wave (Fig. 18).
AC discharge current
RMS value of ac current for 9 cycles
at 50 Hz (in accordance with RUS
PE-80 11 cycles at 60 Hz).
Maximum follow-on current
For the type series L71-… we specify
this performance feature as the
maximum permissible current which
may flow from the supply current
source through the arrester in the
interval between the decay of
the surge and the following zero
crossing of the ac voltage. This
discharge may be repeated ten
times during an interval of 30 s.
Stostromwelle 8/20 s
Standard Impulse Discharge Current 8/20 s
RAB00067
i
t
Ι m
/Ι
p
Stirn
Leading
edge
Rücken
Trailing
edge
r
t
/
s
T
Tr / d
t
Scheitel
Peak
0
10
50
90
100
%
1
Bild / Fig. 18
Kenngren
TS
Stirnzeit in s
Tr
Rückhalbwertzeit in s
01
Nennbeginn
Im
Scheitelwert
Characteristics
tr
Rise time in s
td
Decay time to half value in s
01
Nominal start
Ip
Peak value
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