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Electrical Engineering session - summary

Electrical Engineering session - summary. Bozhidar : 13kA EE systems Installation of s nubber capacitors in RQD/F EE systems New arc chambers for RQD/F EE switches All d ump resistors re-configuration RB dump resistors (DQRB) mechanical modification throughout

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Electrical Engineering session - summary

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  1. Electrical Engineering session- summary • Bozhidar: 13kA EE systems • Installation of snubber capacitors in RQD/F EEsystems • New arc chambers for RQD/F EE switches • All dump resistors re-configuration • RB dump resistors (DQRB) • mechanical modification throughout • thermostat replacementinRR73 and RR77 • 4 water cooling stations relocationin P1 and P5 • Power switching relay (230V/8V) of holding coil(RL4,6,8,10 in BCMs) • Water cooled cable exchange 13kA EE systems • P4 right RB, RQD/F • P6 left & right RB, RQD/F • P8 left & right RB, RQD/F • General maintenance of all 13kA EE systems • IST • SCT • HWC TE-MPE LS1 Workshop, Knud, Edward,23-Nov-2012

  2. Electrical Engineering session- summary • Gert: 600A EE systems • Loosening of holding coil mechanism • Micro-switch not actuated • Main axle fixation • Improvement of existing Voltage Measurement Channel • Replacement of Voltage Divider by low impedance divider and noise reduction components • Replacement of Measurement Board by low noise separation amplifier • Replacement of DQAMS by 12 bit to 24 bit ADC • Voltage measurement taps to be improved • Hi-level SW for on-line analysis • Installation of Thermostats • Reprogramming of Firmware in all 404 interface cards • Visual inspection of main axles – Endoscope • IST • SCT • HWC TE-MPE LS1 Workshop, Knud, Edward, 23-Nov-2012

  3. Electrical Engineering session- summary • Gert: Cabling activities • Securing cables and cable-ends • Installation of new instrumentation cables on the IPQs Q8, Q9 and Q10 • Extension/replacement of cables connected to the DYPB and DYPQ racks TE-MPE LS1 Workshop, Knud, Edward, 23-Nov-2012

  4. Electrical Engineering session- summary Questions / Answers / Open points • Bozhidar: 13kA EE systems • Rudiger: Can we speed up the cool down of the dump resistors from 2h to 1h? • Gert: 600A EE systems • Rudiger: Is „Opening time measurement” needed in the tunnel? Gert: Yes, after such a big intervention on the breakers. • Reiner: DQAMS can be delivered after LS1 because it is not a critical issue. • Edward: Is it needed to put signals from thermostat mounted on the equalizing resistor to the interlock? Monitoring/threshold? • Gert: Cablingactivities • Gert: Has sent a proposal to EN/EL concerning the production of the required cables – no answer. • Knud: No „spaghetti” cables after LS1. • Andrzej: Why have the missing cables not been measured/produced yet? TE-MPE LS1 Workshop, Knud, Edward, 23-Nov-2012

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