2930 MAPLE ST KAISER PERMANENTE 2025-05-12

KAISER PERMANENTE Site Prep #1 Electrical Service ASC & Clinic (HUB) March 18, 2020 Everett, WA Project No. 19.05002.00 G. Current Transmitters (split -core): Designed for three phase or single phase installations to convert monitored AC current to a proportional DC voltage of 0-10 VDC,4-20 mA output or connected to DDC Network. Transmitter shall be selected based on maximum primary current, voltage and size of conductor. Minimum 2,000 VAC internal isolation and 600 VAC case insulation. Accuracy +/-1-percent of full scale. Complete with LED indicator for normal and fault status. Repeatability plus or minus 2-percent of full scale. Response time 100 milliseconds. Each phase shall be monitored for Equipment Energy consumption (kWh) or demand (kW) metering. H. Current Sensing Relay: 100-percent solid state with adjustable range (+/- 1-percent of range) trip set point to monitor AC current. Provide with contact transfer with no calibration drift, complete with LED status indicator. Limit off -state leakage to 2 mA or less. Rating (200 ampere minimum) shall exceed equipment being monitored. I. Control Relays: Relays shall be rated for the application, with a minimum of two sets of Form C contacts, enclosed in a dustproof enclosure. Relays shall be rated for a minimum life of one million operations. Operating time shall be 20 milliseconds or less, with release time of 10 milliseconds or less. Relays should be equipped with coil transient suppression devices to limit transients to 150 percent of rated coil voltage. J. Contactors: Single coil electrically operated. Contacts shall be double break silver to silver. Number of contacts and rating shall be selected for the application intended. Operating and release times shall be 100 milliseconds or less. Contactors shall be equipped with coil transient suppression devices to limit transients to 150 percent of rated coil voltage. K. Nameplates: Nameplates shall be in accordance with Division 23 Section "Identification for Mechanical Piping and Equipment." L. Carbon Dioxide (Air Quality) Sensors: 0-2,000 ppm, Carbon Dioxide CO2 sensors (wall mounted) with integral transducers and LCD display. Output signal shall be 4 to 20 mA or 0-10 VDC. Accuracy shall be <+1 ppm, +2-percent of measure value. Calibration shall not be required for a minimum of 5-years. M. Nitrogen Dioxide (Air Quality) Sensors: 0-100 ppm, Carbon Dioxide NO2 sensors (wall mounted) with integral transducers and LCD display. Output signal shall be 4 to 20 mA or 0-10 VDC. Accuracy shall be <+0.1 ppm, +2-percent of measure value. Calibration shall not be required for a minimum of 5-years. 2.6 FIRE ALARM SYSTEM INTERFACE A. Fire Alarm System Interface: Fire alarm system and air handling equipment smoke detectors shall be provided under Division 26. Provide all hardware, software and wiring required for DDC system interface. Coordinate DDC requirements with Fire Alarm System Contractor. PART 3 - EXECUTION 3.1 EXAMINATION A. Prior to starting work, carefully inspect installed work of other trades and verify that such work is complete to the point where work of this Section may properly commence. B. Notify the Owner Representative in writing of conditions detrimental to the proper and timely completion of the work. INSTRUMENTATION AND CONTROLS FOR HVAC 23 09 00 - 8