Atec NSG-5071 User Manual

NSG 5071

INDUCTIVE SWITCH TRANSIENT TEST CIRCUIT

The NSG 5071 is designed exactly in accordance with EMC-CS-2009.1 for test CI 220 pulses A1, A2-1, A2-2,
C1, C2 and RI 130 using an inductive/relay transient generator test circuit. The NSG 5071 also features

the CI 260 Waveform F in this test circuit which uses the same type of relay. This test circuit is defi ned
in annex F for the A, C pulses and RI 130 and fi gure 19-10 for CI 260 Waveform F.

The basic philosophy of this test circuit is better reproducibility of actual switching transients. The repro­ducibility of this test circuit comes not from the output characteristics as in traditional conducted auto-

motive immunity tests, but from a fi xed design of the generator using several pre-defi ned components.
Many of these components are defi ned in the standard as “critical” with no substitutions allowed. These

components are used as required in the standard.

Designed in accordance to Ford

standard EMC-CS-2009

Transients disturbances CI 220 A

and C pulses
CI 260 waveform F
User replaceable relays
Timer to track relay usage
Up to 30 A DUT current

The test circuit is based primarily around a Potter and Brumfi eld relay and two inductors from Osborne

Transformer. The relay is used in three ways: to switch the voltage off to inductors thus causing large
inductive kickback transients, to self-chatter, and in the case of Waveform F, to act as a randomized
dropout test.

The NSG 5071 is a convenient way of using the required com ponents in the different required confi gura-

tions in the standard to provide a single output to the EUT and maximize ease-of-use.

Technical specifications

Critical components used: Potter and Brumfi eld KUP-14A15-12

(as definied by the standard)

DC current (I

DC voltage (U

): 10 A with supplied relay

max

): 15 V

max

5 μH Osborn Transformer PN 8745
100 mH Osborn Transformer PN 32416

Up to 30 A with user-installed relay

NSG 5071

INDUCTIVE SWITCH TRANSIENT TEST CIRCUIT

Example pulses:

Teseq AG

Nordstrasse 11F 4542 Lute rbach Switzerland
T + 41 32 681 40 4 0 F + 41 32 681 40 48

[e-mail] www.teseq.com

© February 2011 Teseq®
Specifications subject to change without notice.

®

Tes eq

is an ISO-registered company. Its products

are designed and manufactured under the strict

quality and environmental requirements of the ISO

9001. This document has b een carefully checked.

However, Teseq

errors or inaccuracies.

691-271A February 2011

®

does not assum e any liability for