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    Apter Power supports exact-match sourcing enquiries for legacy ABB SNAT 7902 58424099 input protection cards.

SNAT 7902 58424099

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ABB SNAT 7902 58424099 is the A8 input protection card used in SAMI GS ACS 502–506 converter modules for rectifier triggering and protection functions.
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Technical specifications for SNAT 7902 58424099

  • Manufacturer:
    ABB
  • Part Number:
    SNAT 7902 58424099
  • Product Family:
    ABB Drives
  • Product Type:
    Input Protection Card
  • Stock:
    1
  • ABB order code:
    58424099
  • ABB service designation:
    SNAT 7902 INP
  • Hardware position:
    A8
  • Drive platform:
    SAMI GS / ACS 502–506
  • Converter groups:
    380 V and 500 V units
  • Rectifier interface:
    Thyristor gate-trigger circuits
  • Bridge protection:
    Capacitors and varistors
  • Fan protection:
    Onboard fuses
  • Weight:
    0.26 kg
  • Estimated shipping dimensions:
    19x12.1x3cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Rectifier Drive Scope Diagnostics Applications

Features:

  • A8 input role: Installed in the SAMI GS inverter module.
  • Rectifier interface: Provides gate-trigger circuits for the rectifier thyristors.
  • Protection functions: Uses capacitors, varistors and fan-protection fuses.
SNAT 7902 58424099 connects the drive's incoming rectifier hardware with the control and protection functions assigned to the input card.

Its mixed trigger and protection role makes the exact A8 board identity important during converter troubleshooting.

ABB's component tables tie order code 58424099 to the supported ACS 50X converter groups used for maintenance selection.

Apter Power can assist with document and quotation support for the ABB SNAT 7902 58424099 Input Protection Card.
ABB SNAT 7902 58424099 Input Protection Card Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Trigger stage: Supplies gate-trigger circuits for rectifier thyristors.
  • Bridge protection: Capacitors and varistors protect the rectifier bridge.
  • Cooling protection: Onboard fuses protect the converter fan circuit.
  • Hardware position: ABB assigns the card to position A8.
  • 380 V group: Listed across the documented ACS 50X converter-module range.
  • 500 V group: Listed across the documented ACS 50X converter-module range.
  • Early-unit exception: Selected pre-December-1992 1400 V rectifier units use SNAT 7901.
  • 600 V boundary: ABB lists SNAT 7903 for that converter group.
  • Overtemperature path: Inspect cooling airflow and fan operation first.
  • Card-level check: ABB includes the SNAT 7902 fuses in the fault sequence.
  • Transformer check: Confirm the T61 primary and secondary connections.
  • Escalation boundary: Continue with approved ABB service support if the fault persists.
  • ACS 502: Input-protection service in enclosed SAMI GS drive assemblies.
  • ACS 504: Input-protection service in open-chassis converter modules.
  • ACS 506: Component selection within the documented SAMI GS converter family.
  • Legacy drive maintenance: Exact A8 board identification for rectifier and cooling-protection work.
Description
Within the SAMI GS inverter module, SNAT 7902 58424099 occupies the A8 input-protection position and interfaces with the rectifier section.

SNAT 7902 58424099 combines rectifier-thyristor gate-trigger circuits with capacitors and varistors that protect the bridge, while onboard fuses protect the converter fan circuit.

For drive service, SNAT 7902 58424099 links the board identity to defined ACS 50X converter configurations and provides a specific diagnostic point when ABB's fault-tracing sequence calls for the input-card fuses to be checked.
Alternative Names
SNAT7902 EFD SNAT-7902-EFD SNAT 7902 58424099 SNAT 7902 INP
Technical notes
SNAT 7902 58424099 carries rectifier gate-trigger and bridge-protection functions at the A8 position, so board identity is electrically significant. Isolate the drive and match order code, voltage group and converter generation before replacement; use SNAT 7903 for the documented 600 V group and resolve the early SNAT 7901 exception separately.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can SNAT 7902 58424099 be fitted when the installed A8 card carries a different ABB order code?
No. Position A8 confirms the function, but order code 58424099 must also match before the input-protection card is replaced.
Should SNAT 7902 58424099 be replaced immediately when an ACS 502 reports overtemperature?
Not before checking cooling airflow and fan operation. ABB's fault path brings the card fuses into the investigation after those cooling conditions are assessed.
Is SNAT 7902 58424099 the documented input card for a 600 V converter module?
No. ABB lists SNAT 7903 for the 600 V group, so stop and identify the correct voltage-specific card.
What legacy condition excludes SNAT 7902 58424099 from an early SAMI GS repair?
A pre-December-1992 unit with 1400 V rectifier modules uses the SNAT 7901 exception; establish both conditions before choosing the A8 card.
What should a drive-service RFQ include for SNAT 7902 58424099?
Provide order code 58424099, the complete ACS 50X type, voltage group, serial information and a record of the installed A8 board.
Why must bridge symptoms be reviewed before replacing SNAT 7902 58424099?
The card contains rectifier gate-trigger circuits plus capacitors and varistors for bridge protection, so a fault can involve the connected rectifier path rather than the board alone.