ELECTRICAL TRANSIENTS REQUIREMENTS

ISO T/R

7637/1

Test Pulse

TEST LEVELS

I

II

III

IV

Delays and

Impedance

1

-25 V

-50 V

-75 V

-100 V

2 ms, 10

Ω

2

+25 V

+50 V

+75 V

+100 V

0.2 ms, 10

Ω

3a

-25 V

-50 V

-100 V

-150 V

0.1

µs, 50 Ω

3b

+25 V

+50 V

+75 V

+100 V

0.1

µs, 50 Ω

4

-4 V

-5 V

-6 V

-7 V

100 ms, 0.01

Ω

5

+26.5 V

+46.5 V

+66.5 V

+86.5 V

400 ms, 2

Ω

ISO T/R

7637/1

Test Pulse

TEST LEVELS RESULTS

I

II

III

IV

1C

C

C

C

2C

C

C

C

3a

CC

CC

3b

CC

CC

4C

C

C

C

5C

E

E

E

(With a series resistor

≥ 1 KΩ in input and status pins).

CLASS

CONTENTS

C

All function of the device are performed as designed after exposure to disturbance.

E

One or more functions of the device is not performed as designed after exposure and

cannot be returned to proper operation without replacing the device.

VN450

3/9