MODUK DEF STAN 00-970: PT 1: SEC 6 PDF

This leaflet specifies the characteristics of electrical power supplied to the terminals of airborne equipment and defines limits for those aspects of utilisation equipment that may adversely affect the characteristics of electrical power supplied to other equipment.

The characteristics specified in this leaflet are based on the following assumptions:

(a) the system capacity is not less than 1.5 kW;

(b) the normal loading on the system is between 5% and 85% of the power supply system capacity;

(c) the load balance in A.C. systems is such that under steady state conditions the maximum difference in line current on any power source does not exceed 15% of the rated current of that power source; and

(d) the power factor in A.C. systems is between 0.8 lag and 1.0 at loads between 30% and 85% of rated load, and between 0.5 lag and 1.0 at loads between 5 % and 30% of rated load.