Pool Main Pump Motor
The main pool pump motor at the facility (as of August 2021) is a Leeson Model C254T17DK13A (catalog #199987.00). It is rated for 15 HP (11 kW), 37 FLA @ 230 VAC. It is inverter duty rated (confirmed by the local manufacturer's rep) with a 10:1 PWM ratio (60 Hz, 1770 RPM down to 6 Hz, 177 RPM).
It has a month/year manufacturing designation of "H2016" - presumably corresponding with August (H=8) 2016. This makes sense, as the pump was noted to have been replaced in early 2017.
Power Factor Correction Capacitor (PFCC)
At present (as of August 2021), no power factor correction capacitor (PFCC) is in use. It was decided that given cost priorities, a PFCC would not offer sufficient payback to justify its purchase.
Myron Zucker was contacted in August 2020 and provided two options, both rated for 240 VAC, 5 kVAr, 3-phase, 60 Hz:
- KNM23005-3 (NEMA 12 for indoor use, 14" H x 9.25" W x 5.25" D)
- KNM23005-3N3 (NEMA 3R suitable for outdoor use, 16" H x 12" W x 6" D)
Applying a 5 kVAr PFCC would reduce the FLA from 37 A to 31 A. This would reduce i-squared-R losses by 6 A. Actual losses are then based upon the cable run.
Variable Frequency Drive (VFD)
IMPORTANT: At this time, this section is for investigation purposes only. It has not been determined when/if a VFD will be implemented.
Configuration
- Variable Torque (VT) for pump control (power is proportional to the cube of the speed)
Safety
Options
All drives are sized to drive a 15 HP motor, 230 VAC three-phase.
Unless otherwise noted, all support Modbus RTU (via RS-485).
- Fuji Electric FRN0047C2S-2U (47.0 FLA, 10.24" H x 8.66" W x 7.48" D, no STO)
- Hitachi WJ200-110LF (56.0 FLA VT, 11.65" H x 7.09" W x 6.89" D, with STO)
- DC Reactor: DCL-L-11
- Input Side AC Reactor: ALI-22L2 (
- Input Side Noise Filter: NF-L60
- Radio Noise Filter: ZCL-A (zero-phase reactor) or CFI-L (capacitor filter)
Wiring
- #4 AWG? (75 °C rated)