Main%Dump%Resistor%for%Capacitor%Banks% Discharge% …
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Main Dump Resistor for Capacitor Banks Discharge
Steve Chappa, Hogan Nguyen
March 2nd 2017
We Opened Up the Capacitor Bank Units for PS1, PS2, PS3 This is to confirm the Dump Resistor, according to BNL Drawings D19-‐E71 and D19-‐E78 The Dump Resistor for Cap Bank Unit for PS1 is Confirmed ! The Dump Resistor for Cap Bank Units for PS2 and PS3 appears to be by passed. This is may be a simple misconnec@on.
R5 = 10 KOhm Main Dump Resistor. AcUvated when power is OFF
PorUon of D19-‐E78
Connects To R5 (10 K Ohm Dump Resistor)
+ HV
SCR Thyristor to charge the Blumlein Kilovac
Relay
Capacitor Bank Unit a\ached to PS1
R5 = 10 KOhm Power Resistor
Posi3ve Terminal of Capacitor
Nega3ve Terminal of Capacitor
This AGREES with drawing BNL E821 drawings d19-‐71 and d19-‐78
10 KOhm Power Resistor
Capacitor Bank Unit a\ached to PS3
R5 = 10 KOhm Power Resistor
Posi3ve Terminal of Capacitor
Posi3ve Terminal of Capacitor
This DOES NOT agree with drawing BNL E821 drawings d19-‐71 and d19-‐78. 10 KOhm has been bypassed since both ends of the resistor are connected to +HV