ISO 7400:1990 PDF

Mopeds — Alternating current flasher units

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Title (English):

ISO 7400:1990

Mopeds — Alternating current flasher units

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 7
Publication date:: November 1, 1990
Edition:: ISO IS 7400 edition 2 version 1
ICS:: 43.140

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Description (English):

Specifies the electrical characteristics with which a.c. flasher units are required to comply when submitted for type-testing. Applies to flashers intended for use with 6 V or 12 V systems. This second edition cancels and replaces the first edition (1984).

Technical details

Technical committee: ISO/TC 22/SC 38 - Motorcycles and mopeds
SKU: ISO 7400:1990

Abstract

Overview

ISO 7400:1990 - "Mopeds - Alternating current flasher units" - is the second edition (1990) international standard that specifies the electrical characteristics and type‑testing requirements for alternating‑current (a.c.) flasher units intended for mopeds. It replaces ISO 7400:1984 and applies to flashers designed for 6 V or 12 V electrical systems, for both simultaneous and alternating flashing arrangements.

Key topics and technical requirements

The standard focuses on electrical performance, marking, and environmental/mechanical durability tests. Important technical topics include:

Scope and identification
- Mandatory legible marking: manufacturer trade name/mark, rated voltage, short‑circuit current (Zcc), terminal identification and lamp wattages.
- Applies to flasher units for mopeds (per ISO 3833).
Electrical test conditions
- Test supply: alternating current at 50 Hz or 60 Hz.
- Working voltages for type tests:
  - 6 V systems: tests at specified r.m.s. voltages (see standard).
  - 12 V systems: tests at corresponding r.m.s. voltages.
- Filament lamp requirements reference IEC 810.
Performance criteria
- Flash‑rate and current “on”‑time requirements, measured after stabilization and defined cycles.
- Starting time and timing tolerances for first on/off events.
- Tell‑tale (indicator) behavior: must operate in phase or counterphase and indicate lamp failure by ceasing or changing frequency.
Electrical resilience
- Voltage drop limits between input/output terminals (specified maximum).
- Dielectric strength: withstand 1 min at 1 000 V r.m.s. between terminals and exposed metallic parts.
- Overload strength and short‑circuit current capability (Zcc defined in the standard related to lamp wattage and nominal voltage).
Environmental and mechanical tests
- Temperature and humidity resistance: tests at elevated humidity, high and low temperatures (e.g., +40 °C/90–95% RH, +80 °C, −40 °C).
- Vibration tests: sinusoidal 20–200 Hz, acceleration ~50 m/s²; endurance over axes.
- Impact test: pendulum strike arrangement (500 mm wire, 25 kg block).
- Endurance: long‑term cycling (e.g., 100 h of 15 s on/15 s off or 50 h continuous).
Sampling and sequence
- Typical sample size: 20 units with a prescribed sequence of individual tests.

Applications - who uses ISO 7400:1990

Moped component manufacturers and flasher‑unit designers for product development and type‑approval.
Test laboratories and vehicle homologation authorities conducting type‑testing and regulatory compliance.
Quality assurance and supplier engineers for production verification and durability testing.
Vehicle manufacturers integrating flasher units into electrical systems (6 V / 12 V).

Related standards

ISO 3833 - Road vehicles: terms and definitions
IEC 810 - Lamps for road vehicles (filament lamp performance)
ISO 7398 / ISO 7399 / ISO 8052 - Related motorcycle and moped flasher unit standards

Keywords: ISO 7400:1990, mopeds, alternating current flasher units, flasher type‑testing, 6 V, 12 V, flash‑rate, dielectric strength, vibration test, ISO standards.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and technical requirements

The standard focuses on electrical performance, marking, and environmental/mechanical durability tests. Important technical topics include:

Scope and identification
- Mandatory legible marking: manufacturer trade name/mark, rated voltage, short‑circuit current (Zcc), terminal identification and lamp wattages.
- Applies to flasher units for mopeds (per ISO 3833).
Electrical test conditions
- Test supply: alternating current at 50 Hz or 60 Hz.
- Working voltages for type tests:
  - 6 V systems: tests at specified r.m.s. voltages (see standard).
  - 12 V systems: tests at corresponding r.m.s. voltages.
- Filament lamp requirements reference IEC 810.
Performance criteria
- Flash‑rate and current “on”‑time requirements, measured after stabilization and defined cycles.
- Starting time and timing tolerances for first on/off events.
- Tell‑tale (indicator) behavior: must operate in phase or counterphase and indicate lamp failure by ceasing or changing frequency.
Electrical resilience
- Voltage drop limits between input/output terminals (specified maximum).
- Dielectric strength: withstand 1 min at 1 000 V r.m.s. between terminals and exposed metallic parts.
- Overload strength and short‑circuit current capability (Zcc defined in the standard related to lamp wattage and nominal voltage).
Environmental and mechanical tests
- Temperature and humidity resistance: tests at elevated humidity, high and low temperatures (e.g., +40 °C/90–95% RH, +80 °C, −40 °C).
- Vibration tests: sinusoidal 20–200 Hz, acceleration ~50 m/s²; endurance over axes.
- Impact test: pendulum strike arrangement (500 mm wire, 25 kg block).
- Endurance: long‑term cycling (e.g., 100 h of 15 s on/15 s off or 50 h continuous).
Sampling and sequence
- Typical sample size: 20 units with a prescribed sequence of individual tests.

Applications - who uses ISO 7400:1990

Moped component manufacturers and flasher‑unit designers for product development and type‑approval.
Test laboratories and vehicle homologation authorities conducting type‑testing and regulatory compliance.
Quality assurance and supplier engineers for production verification and durability testing.
Vehicle manufacturers integrating flasher units into electrical systems (6 V / 12 V).

Related standards

ISO 3833 - Road vehicles: terms and definitions
IEC 810 - Lamps for road vehicles (filament lamp performance)
ISO 7398 / ISO 7399 / ISO 8052 - Related motorcycle and moped flasher unit standards

Keywords: ISO 7400:1990, mopeds, alternating current flasher units, flasher type‑testing, 6 V, 12 V, flash‑rate, dielectric strength, vibration test, ISO standards.

ISO 7400:1990 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Applications - who uses ISO 7400:1990

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Applications - who uses ISO 7400:1990

Related standards

Related standards

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