B88069X4521B502 Datasheet, PDF (2/4 Pages) EPCOS – Surge arrester 3-electrode arrester

Surge arrester
3-electrode arrester
B88069X4521B502
EZ3-A250XF1
Features
ƒ Extremely small size
ƒ Fast response time
ƒ High current rating
ƒ Stable performance over life
ƒ Very low capacitance
ƒ High insulation resistance
ƒ Reliable failsafe device
ƒ RoHS-compatible
Applications
ƒ Branch exchange (MDF)
ƒ Line protection
ƒ Station protection
Electrical specifications
DC spark-over voltage ^{1) 2) 4)}
Impulse spark-over voltage ⁴⁾
at 100 V/µs - for 99 % of measured values
- typical values of distribution
at 1 kV/µs - for 99 % of measured values
- typical values of distribution
Service life
10 operations
1 operation
10 operations [5x (+) & 5x (–)]
1 operation
300 operations (alternating polarity)
Insulation resistance at 100 V_dc ⁴⁾
Capacitance at 1 MHz ⁴⁾
50 Hz, 1 s ⁵⁾
50 Hz, 0.18 s ⁵⁾
8/20 µs ⁵⁾
10/350 µs ⁵⁾
10/1000 µs ⁵⁾
DC holdover voltage ³⁾
at 135 V_dc / 1300 Ω
Transverse delay time ³⁾
Arc voltage at 1 A
Glow to arc transition current
Glow voltage
Weight
Storage temperature
Climatic category (IEC 60068-1)
Marking, blue negative
KB AB E / KB AB PM
Please read Cautions and warnings and
Important notes at the end of this document.
Page 2 of 4
250
V
± 20
%
< 600
V
< 450
V
< 750
V
< 600
V
5
A
5
A
5
kA
1
kA
200
A
>1
GΩ
< 1.5
pF
< 150
ms
< 0.2
µs
~ 10
V
~1
A
~ 80
V
~ 1.0
g
-40 ... +90
°C
40/ 90/ 21
EZ 250 YY O
EZ
- Series
250 - Nominal voltage
YY
- Year of production
O
- Non radioactive
Issue 02 / 2007-09-06