[dsg-svt] Fwd: Re: Fwd: SVT Cooling System Trip Analysis (Hardware Interlock)

[Yuri Gotra]

Could you please provide update on this request, we are about to have 
beam and the cable from the hardware interlock box to the pump relay box 
is not yet installed. This could lead to the CVT down time due to the 
issues with circuit breaker I reported. Thank you


-------- Forwarded Message --------
Subject: 	Re: [dsg-svt] Fwd: SVT Cooling System Trip Analysis (Hardware 
Interlock)
Date: 	Fri, 10 Aug 2018 08:51:22 -0400
From: 	Yuri Gotra <gotra at jlab.org>
To: 	dsg-svt <dsg-svt at jlab.org>

Today's trip is caused by the circuit breaker. Around 4 am I started
warming up the tracker to prepare for the target alignment work. The
chiller and the external pump are on the same 20 A breaker (connected
via the relay). The chiller draws 15 A and the pump 3 A. When heater is
operational there could be current jumps over 20 A. Bob requested
separation of the pump and the chiller power which requires extra relay
box. Could you please provide another relay box with additional control
line from the hardware interlock box connected to the interlock system
the same way as for the existing relay box. I believe splitting the same
control line would do. Thank you

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