TSIxxB1

4/9

This test concerns the 10/700

µs waveform surge,

± 1.5 kV.

The surge generator used for the test has the

following circuitry (fig.2).

TEST # 1

LIGHTNING SIMULATION

Ω

Ω

Ω

Fig. 2 : 10/700

µs waveform surge generator circuit

The behaviour of the TSI200B1 to this lightning surge is given below (fig. 3).

Fig. 3 : Voltage across the TSI200B1 at the + and - terminations and current throught it

for a 1.5 kV positive surge (fig.3a) and negative surge (fig. 3b)

These curves show the peak voltage the surge

generates

across

the

TSI200B1

+

and

-

terminations. This lasts a short time (

′ 2 µs) and

after, as the internal protection gehaves like a

short circuit. The voltage drop across the TSIxxB1

becomes a few volts. In the meanwhile all the

surge current flows in the protection.

As far as the 10/700

µs waveform surge test is

concerned,the TSIxxB1 withstand the ±1.5 kV test.