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ISO 7637

ISO 7637 Automotive EMC Compliance

The EMC Shop stock a variety of ISO 7637 automotive test equipment the different transient tests. Some of the ISO 7637 pulses are as follows. 

Pulse 1.

A simulation of transients due to supply disconnection from inductive loads; it applies to a DUT if as used in the vehicle, it remains connected directly in pa...

ISO 7637 Automotive EMC Compliance

The EMC Shop stock a variety of ISO 7637 automotive test equipment the different transient tests. Some of the ISO 7637 pulses are as follows. 

Pulse 1.

A simulation of transients due to supply disconnection from inductive loads; it applies to a DUT if as used in the vehicle, it remains connected directly in parallel with an inductive load.


Pulse 2a.

Simulates transients due to sudden interruption of currents in a device connected in parallel with the DUT due to the inductances of the wiring harness.


Pulse 2b.

Simulates transients from DC motors acting as generators after the ignition is switched off.


Pulse 3a/3b.

Occurs as the result of switching processes. The characteristics of this pulse are influenced by distributed capacitance and inductance of the wiring harness.

Pulse 4.

The voltage reduction caused by energizing the starter motor circuits of the internal combustion engines.


Pulse 4 variants.

Most manufacturer variations of pulse four are generally much more complicated. For example Ford requires up to four arbitrary generators with four outputs to be perfectly synchronized.


Pulse 5.

Simulation of a load dump transient occurring in the event of a discharged battery being disconnected while the alternator is generating charging current with other loads remaining on the alternator circuit at this moment.


Magnetic field immunity.

Simulates magnetic fields generated by electric motors, daytime running lamps, etc. for DUTs with magnetically sensitive devices.


Transformer coupled sine waves.

Sinusodial noise coupled on battery lines. Often referred to as ground shift.

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ISO 7637  There are 10 products.

Subcategories

  • Pulse 1, 2a

    ISO 7637 Pulse 1

    • A simulation of transients due to supply disconnection from inductive loads; it applies to a DUT if as used in the vehicle, it remains connected directly in parallel with an inductive load.

    ISO 7637 Pulse 2a

    • Simulates transients due to sudden interruption of currents in a device connected in parallel with the DUT due to the inductances of the wiring harness.

    ISO 7637 Test pulse 1 This test is a simulation of transients due to supply disconnection from inductive loads. It is applicable to DUTs which, as used in the vehicle, remain connected directly in parallel with an inductive load.

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  • Pulse 2b, 4

    ISO 7637 Pulse 2b

    simulates transients from d.c. motors acting as generators after the ignition is switched off.

    ISO 7637 Pulse 4

    This pulse simulates supply voltage reduction caused by energizing the starter-motor circuits of internal combustion engines, excluding spikes associated with starting.

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  • Pulse 3a, 3b

    ISO 7637 Pulse 3a/3b

    Occurs as the result of switching processes. The characteristics of this pulse are influenced by distributed capacitance and inductance of the wiring harness.

    The EMC Shop stocks EFT generators for ISO pulse 3a/3b and variants.

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  • Pulse 5a, 5b, 7

    ISO 7637-2 Test pulses 5a and 5b

    This test is a simulation of load dump transient, occurring in the event of a discharged battery being disconnected while the alternator is generating charging current and with other loads remaining on the alternator circuit at this moment; the load dump amplitude depends on the alternator speed and on the level of the alternator field excitation at the moment the battery is disconnected.

    • The pulse shape and parameters for an alternator with no centralized load dump suppression (pulse 5a).
    • The pulse shape and parameters for an alternator with centralized load dump suppression (pulse 5b).

    The EMC shop has a variety of solutions for ISO 7637 Load Dump Pulse 5a, 5b, 7 compliance.

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Showing 1 - 10 of 10 items
    • LD 200N Load Dump generator for ISO 7637 Pulses 5A, 5B, 7
    • VDS 200N50 Voltage Drop Simulator for ISO 7637  Pulses 2B and 4
    • UCS 200N Auto Transient/EFT Simulator for ISO 7637 Pulses 1, 2, 3A/3B
    • Load Dump CLD Module enables the LD 200N to generate clipped load dump pulses
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    • Simulator and power amplifier
    • Up to 60 Volts, 30 Amps
    • ISO 7637-2
    • ISO 16750-2
    • ISO 11452-8
    • Pulse 2b, Pulse 4
    • battery supply simulation and DC voltage source
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    • MT 5511 Micro Transients
    • FT 5531 Fast Transients
    • LD 5550 Load Dump Generator
    • Autostar 7 software
    • Built-in 100 A coupler/battery switch
    • CDN 5500
    • Contains space for up to three transient modules
    • Supports USB and GPIB
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    • ACS60C30 & DCP60C30 Package
    • Up to DC 60V, 30 Amps
    • ISO 7637-2
    • ISO 16750-2
    • ISO 11452-8
    • Pulse 2b, Pulse 4
    • battery supply simulation and DC voltage source
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  • $3,790.00
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    • ACS60C30 & DCP60C30 Package
    • Battery Supply Simulator and Power Amplifier
    • Up to DC 60V, 30 Amps
    • ISO 7637-2
    • ISO 16750-2
    • ISO 11452-8
    • Pulse 2b, Pulse 4
    • battery supply simulation and DC voltage source
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    • Load Dump generator according to ISO 7637, ISO 16750-2, SAE J1113, SAE J1455, JASO, Nissan and most car manufacturer requirements 
    • Generates Clipped Load Dump pulses 
    • Built-in 0.5 - 38 Ohm source impedance, selectable in 0.1 Ohm steps 
    • Pulse duration up to 1,200ms
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    • ISO PULSE 6 (12V/24V)
    • GOST PULSE 1B (24V)
    • Standalone test generator 
    • Test Voltage up to 1,100V
    • Includes 30, 50, 100, 150 and 200ohm source impedance
    • Built-in electronic battery switch
    • Built-in CDN 60V/25A DC
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    • Simulator and power amplifier
    • Up to 60 Volts, 30 Amps
    • ISO 7637-2
    • ISO 16750-2
    • ISO 11452-8
    • Pulse 2b, Pulse 4
    • battery supply simulation and DC voltage source
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    • Voltage up to 60V
    • Current up to 10A (peak up to 15 A)
    • Bipolar-amplifier models available
    • Low output impedance
    • Powerful DC voltage source
    • Pulses 4 and 2b (ISO 7637-2/ISO 16750-2)
    • Pre-programmed test routines to simulate various supply waveforms
    • Input for external signal generator to produce most complex waveforms
    • Software for Windows Vista & Windows 7
    • USB and GPIB interfaces
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Showing 1 - 10 of 10 items