Caroline County, Virginia Request for Proposals Project 25 Radio ...

More documents

Recommendations

Info

UHF/700 MHz P25 Radio Communications SystemRequestion for ProposalsCaroline County, Virginia2. A fuel level monitoring device capable of triggering low fuel alarm shall beprovided3. Multi-valve for filling, pressure relief and gauging6.5 Site PowerA. The County prefers DC rectifiers and batteries; however, REPONDENTS maypropose either an AC powered site with an uninterruptable power supply or a DCpower supply/rectifiers and batteries.6.5.1 Uninterruptable Power Supply (UPS)A. The SELECTED VENDOR shall provide single phase, online, double conversion,static type, uninterruptible power supply (UPS) at each shelter with the followingfeatures:1. Surge suppression2. Input harmonics reduction3. Rectifier / charger4. Inverter5. Static bypass transfer switch6. Battery and battery disconnect device7. Internal maintenance bypass / isolation switch8. Output isolation transformer9. Remote UPS monitoring provisions10. Battery monitoring11. Remote monitoringB. SELECTED VENDOR shall perform electrical loading analysis for shelterequipment, excluding HVAC subsystems, during preliminary design to verify UPSsize required. All electrical loading calculations shall include a 25% expansionfactor, and all assumptions regarding power consumption and duty factor shall bethoroughly explained.C. For the purpose of the proposal, RESPONDENT shall assume the following:May 27, 2011 Page 65 of 134
UHF/700 MHz P25 Radio Communications SystemRequestion for ProposalsCaroline County, Virginia1. 10 kVA output2. Single phase3. 60 Hz4. 0.8 Power Factor5. Minimum one hour run timeD. Operational Requirements:1. Automatic operation includes the following:a. Normal Conditions – Load is supplied with power flowing from thenormal power input terminals, through the rectifier-charger andinverter, with the battery connected in parallel with the rectifierchargeroutput.b. Abnormal Supply Conditions – If normal supply deviates fromspecified and adjustable voltage, voltage waveform, or frequencylimits, the battery supplies energy to maintain constant, regulatedinverter power output to the load without switching or disturbance.c. If normal power fails, energy supplied by the battery through theinverter continues supply-regulated power to the load withoutswitching or disturbance.d. When power is restored at the normal supply terminals of thesystem, controls automatically synchronize the inverter with theexternal source before transferring the load. The rectifier-chargerthen supplies power to the load through the inverter andsimultaneously recharges the battery.e. If the battery becomes discharged and normal supply is available,the rectifier-charger charges the battery. On reaching full charge,the rectifier-charger automatically shifts to float-charge mode.f. If any element of the UPS system fails and power is available at thenormal supply terminals of the system, the static bypass transferswitch switches the load to the normal AC supply circuit withoutdisturbance or interruption.g. If a fault occurs in the system supplied by the UPS, and currentflows in excess of the overload rating of the UPS system, the staticbypass transfer switch operates to bypass the fault current to thenormal AC supply circuit for fault clearing.May 27, 2011 Page 66 of 134
Page 4 and 5:
UHF/700 MHz P25 Radio Communication
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16: UHF/700 MHz P25 Radio Communication
Page 65: UHF/700 MHz P25 Radio Communication
Page 103 and 104: 700 MHz P25 Radio Communications Sy
Page 105 and 106: Caroline County, VA APPENDIX BRFP f
Page 115 and 116: Caroline County, VA APPENDIX CRFP f
Page 117 and 118:
Caroline County, VA APPENDIX CRFP f
Page 119 and 120:
Caroline County, VA APPENDIX DRFP f
Page 121 and 122:
Caroline County, VARFP for Radio Co
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135:
show all

Caroline County, Virginia Request for Proposals Project 25 Radio ...

Create successful ePaper yourself

Delete template?

Save as template?