nanog mailing list archives
Re: Rack rails on network equipment
From: Bryan Fields <Bryan () bryanfields net>
Date: Fri, 24 Sep 2021 23:28:53 -0400
On 9/24/21 10:58 PM, Owen DeLong via NANOG wrote:
Meh… Turn off power supply input switch, open chassis carefully, apply high-wattage 1Ω resistor across capacitor terminals for 10 seconds.
If dealing with a charged capacitor, do not use a low resistance such as a ohm. This is the same as using a screwdriver, and will cause a big arc. You want to use a 100k ohm device for a couple seconds, this will bleed it off over 5-10 seconds. Most (all?) power supplies will have a bleeder over any large value caps, and will likely be shielded/encased near the input anyways. If you let it sit for 5-10 minutes the leakage resistance will dissipate the charge in any typical capacitor. -- Bryan Fields 727-409-1194 - Voice http://bryanfields.net
Current thread:
- Re: Rack rails on network equipment, (continued)
- Re: Rack rails on network equipment Brandon Butterworth (Sep 24)
- Re: Rack rails on network equipment Jay Hennigan (Sep 24)
- Re: Rack rails on network equipment Denis Fondras (Sep 24)
- Re: Rack rails on network equipment Martin Hannigan (Sep 24)
- Re: Rack rails on network equipment William Herrin (Sep 24)
- Re: Rack rails on network equipment Chris Adams (Sep 24)
- Re: Rack rails on network equipment Niels Bakker (Sep 24)
- Re: Rack rails on network equipment William Herrin (Sep 24)
- Re: Rack rails on network equipment Chris Adams (Sep 24)
- Re: Rack rails on network equipment Owen DeLong via NANOG (Sep 24)
- Re: Rack rails on network equipment Bryan Fields (Sep 24)
- Re: Rack rails on network equipment Chris Adams (Sep 24)
- Re: Rack rails on network equipment Sabri Berisha (Sep 25)
- Re: Rack rails on network equipment Randy Carpenter (Sep 24)
- Re: Rack rails on network equipment Lady Benjamin Cannon (Sep 26)
- Re: Rack rails on network equipment Joe Greco (Sep 24)