RTCA/DO-160D, section 22
RTCA/DO-160D, section 22
(OP)
anyone know the way of this test for
it is a pressure switch to monitor the hydraulic pressure. (like your home well water pump switch.) It is just a pair of on-off contacts. In old days, +28 VDC in, thru the switch out to the lamp, then go back to -28 VDC. (nowadays, maybe lower voltage and mA current to PC.)
How to test this PRESSURE SWITCH per RTCA/160D, section 22, waveform 3, table 22-3 cable bundle, level 4, 1500 V and 300A?
Thanks
it is a pressure switch to monitor the hydraulic pressure. (like your home well water pump switch.) It is just a pair of on-off contacts. In old days, +28 VDC in, thru the switch out to the lamp, then go back to -28 VDC. (nowadays, maybe lower voltage and mA current to PC.)
How to test this PRESSURE SWITCH per RTCA/160D, section 22, waveform 3, table 22-3 cable bundle, level 4, 1500 V and 300A?
Thanks





RE: RTCA/DO-160D, section 22
"These test methods and procedures apply idealized wavefmms to verify the capability of equipment to withstand effects of lightning induced electrical transients. The criteria for equipment performance in the presence of lightning transients shall be defined in the applicable equipment specification."
TTFN
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FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: RTCA/DO-160D, section 22
"4.4.4.1. Indirect Lightning Effects Testing
The Indirect Effects testing shall be performed per DO-160D Section 22 using Waveform 3, Table 22-3 cable bundles, Level 4, 1500 Volts or 300 Amperes."
thanks.
RE: RTCA/DO-160D, section 22
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: RTCA/DO-160D, section 22
BUT, how we physically do this section 22 test? you definitely will not flow 300 amp thru the switch.
thanks.
RE: RTCA/DO-160D, section 22
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: RTCA/DO-160D, section 22
says not much to me with my little knowledge of it.
if i understand correctly, as an airplane hit by a lightning, the current goes from the cloud through the plane's skin and finally reaches ground. (or another cloud, or another part of the cloud.)
any thing inside the plane will subject to some V/A BY the induction.
then the V/A magnitude all depend upon how the equipment is located against the plane skin.
the para 4.4.4.1 tells nothing. the 1500V and 300A are the magnitude of the lightning, so test can not be performed to the pressure switch ALONE.
help?
RE: RTCA/DO-160D, section 22
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers