BS G 261-1:1996

Committees responsible
National foreword
Specification
1 Scope
2 Normative references
3 Definitions
4 General requirements
5 Performance detail requirements
6 Tests
7 Qualification
Annexes
A Example of an individual specification sheet
B Bibliography
Tables
1 Strength of threaded terminals
2 Contact arrangements, symbols and terminal marking
3 Auxiliary terminals
4 Symbols and marking for terminals
5 Dual coil markings
6 Dissimilar metals
7 Contact circuit voltage drop
8 Minimum values for high voltage tests
9 Pull force
10 Categorization of standard vibration test requirements by
    aircraft types and equipment locations
11 Categorization of severe vibration test requirements for
    fixed-wing turbojet engine aircraft and equipment
    locations
12 Overload values and durations
13 Rupture values and durations
14 Duty cycle
15 Contact voltage drop
16 Untitled
17 Contaminant test temperatures
18 Untitled
19 Untitled
20 Production acceptance tests
21 Qualification inspection
Figures
1 Inspection aid
2 Contact bounce (typical circuit)
3 Electromagnetic interference test circuit
4 Typical transient voltage
5 Range curve for vibration tests
6 Standard random vibration test curves for equipment
    installed in fixed-wing aircraft with turbojet engines
7 Standard sinusoidal vibration test curves for equipment
    installed in fixed-wing aircraft with turbojet engines
8 Standard sinusoidal vibration test curves for equipment
    installed in fixed-wing aircraft with reciprocating or
    turbopropeller engines
9 Standard sinusoidal vibration test curves for equipment
    installed in helicopters
10 Robust random vibration test curves for equipment
    installed in fixed-wing aircraft with turbojet engines
11 Test circuit, three-phase load transfer
12 Alternative test circuit, three-phase load transfer

States the performance requirements for electromagnetic relays and contactors for use in nominal 28 V d.c. or 115 V/200 V3-phase, 400 Hz a.c. systems with characteristics as in ISO 1540, particularly the performance requirements for relays and contactors with nominal contact ratings of 5 A a.c., 5 A d.c or greater. It applies to single-pole and multi-pole relays and contactors.

This part of ISO 5867 specifies the performance requirements for electromagnetic relays and contactors for use in nominal 28 V d.c. or 115 V/200 V 3-phase, 400 Hz, a.c. systems having the characteristics specified in ISO 1540.

This part of ISO 5867 specifies the performance requirements for relays and contactors having nominal contact ratings of 5 A a.c., 5 A d.c. or greater. Auxiliary contacts, where applicable, may be rated at lower currents. Three temperature classes and three classes of sealing are specified.

This part of ISO 5867 is applicable to single-pole and multi-pole relays and contactors, electromagnetically operated and magnetically held, or electromagnetically operated and mechanically or magnetically latched, controlled by a voltage of 28 V d.c. or 115 V, 400 Hz, a.c.