Datasheet

50
Pleas e read Important notes on page 4 and Cautions and warnings on page 69.
B i tte beachten Sie d i e S e i te 4 Wichtige Hinweise s owi e d i e
Warn- und Sicherheitshinweise auf S e i te 69.
3-Electrode Arresters
3-Elektroden-Ableiter
T2 Series
© EPCOS AG 2008
Type T20-A230X T20-A250X T20-A350X
Ordering code B88069X8710C203 B88069X8810C203 B88069X7320C203
T21-A230X T20-A230X T21-A250X T21-A350X T20-A420X
B88069X8920B252 on request B88069X8800B252 B88069X5120B252 B88069X7820C203
T23-A230X T23-A230X T23-A250X T23-A350X T23-A420X
B88069X8740B502 on request B88069X8840B502 B88069X7200B502 B88069X8070B502
Nom. DC spark-over 230 230 250 350 420 V
voltage V
sdcN
Tolerance of V
sdcN
±20±20 ±20±20 –17/+30 %
Impulse spark-over
voltage
@ 100 V/µs 99% of <400 <400 < 500 < 650 < 750 V
measured values
@ 100 V/µs typical < 350 < 350 < 400 < 550 < 700 V
values
@ 1 kV/µs 99% of < 500 < 450 < 600 < 700 < 850 V
measured values
@ 1 kV/µs typical < 450 < 400 < 550 < 600 < 800 V
values
Nom. alternating 10 10 10 10 10 A
discharge current
@ 50 Hz, 1s
Alternating 50 50 50 50 50 A
discharge current
@ 50 Hz, 9 cycles
Nom. impulse 20 20 20 20 20 kA
discharge current
10 operations 8/20 µs
Single impulse discharge 25 25 25 25 25 kA
current, 1 op. 8/20 µs
Impulse discharge cur-5 55 52kA
rent, 1 op. 10/350 µs
Impulse discharge cur-200 200 200 200 200 A
rent, 300 op. 10/1000 µs
Insulation resistance > 10 > 10 > 10 > 10 > 10 G Ω
Capacitance @ 1 MHz < 1.5 < 1.5 < 1.5 < 1.5 < 1.5 pF
Currents through center electrode, half value through each line electrode.
About packing see page 65.
Heavy-duty types
20 kA / 10 A • Ø 8 x 10 mm
RAB0002-2
10±0.3
4.25±0.15
ø7.2±0.2
1.5±0.1
ø8
+0.2
0.1
_
RAB0183-B
10±0.3
ø1
50±3
ø1
+0.2
0.1
ø8
_
22
+0.5
1.5
_
RAB0184-J
10±0.3
ø1
4.4±0.3
4.5+1.5
2 13.4
_
+0.2
0.1
ø8
_
15±0.5
4.4±0.3
T20-... T21-... T23-...
Ueberspannungsableiter_de-en_2009.qxd 03.11.2008 16:19 Uhr Seite 50