{"id":417632,"date":"2024-10-20T06:16:59","date_gmt":"2024-10-20T06:16:59","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-2794-0042014-2\/"},"modified":"2024-10-26T11:42:20","modified_gmt":"2024-10-26T11:42:20","slug":"bs-en-2794-0042014-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-2794-0042014-2\/","title":{"rendered":"BS EN 2794-004:2014"},"content":{"rendered":"
This European Standard specifies the characteristics of single-pole circuit breakers, temperature compensated with a rated current from 20 A to 25 A, used in aircraft on-board circuits at a temperature between \u2013 55 \u00b0C and 125 \u00b0C and at an altitude of 15 000 m max.<\/p>\n
These circuit breakers are operated by a push-pull type single push button (actuator), with delayed action \u201ctrip-free\u201d tripping.<\/p>\n
They will continue to function up to the short -circuit current.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
---|---|---|---|---|---|---|---|
5<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
6<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 4 Dimensions and mass 4.1 Dimensional characteristics <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | Figure 1 \u2014 Configuration \u2013 Dimensions \u2013 Tolerances 4.2 Electrical diagram <\/td>\n<\/tr>\n | ||||||
8<\/td>\n | Figure 2 \u2014 Electrical diagram 4.3 Mass 4.4 Panel cut-out 5 Characteristics 5.1 Material, surface treatment 5.2 Mechanical characteristics 5.2.1 Fasteners 5.2.2 Recommended tightening torque of attaching nut for installation <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | 5.2.3 Recommended tightening torque of connection hardware for installation 5.2.4 Resistance to vibrations 5.2.4.1 Combined test: ambient temperature at 70 C and vibrations 5.2.4.2 Combined test: ambient temperature at 85 C, altitude and vibrations 5.2.5 Resistance to shocks 5.2.6 Mechanical endurance 5.3 Environment characteristics 5.3.1 Humidity 5.3.2 Corrosion 5.3.3 Contaminating liquids 5.3.4 Overvoltage caused by lightning 5.4 Electrical characteristics 5.4.1 Nominal voltage of operational circuits Table 1 <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 5.4.2 Voltage drop at \u0399n Table 2 5.4.3 Minimum and maximum tripping thresholds Table 3 5.4.4 Overload trip Table 4 <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 5.4.5 Short-circuit values Table 5 5.4.6 No-Load and load endurance Table 6 5.4.7 Dielectric rigidity Table 7 5.4.8 Insulation resistance <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 6 Designation 7 Rated current code Table 8 8 Delivery hardware code Table 9 <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 9 Marking 10 Technical specification <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Aerospace series. Circuit breakers, single-pole, temperature compensated, rated currents 20 A to 50 A – UNC thread terminals. Product standard<\/b><\/p>\n |