About RLA | HVAC-Talk: Heating, Air & Refrigeration Discussion
Nov 4, 2004 · What mean RLA?...I know that literally mean Rated Load Amperage, but my question is what really means. Example: a compressor nameplate say RLA=16, but an ammeter say amperage …
AMPS ?? R.L.A.,F.L.A.,L.R.A. - HVAC-Talk
Jul 6, 2012 · RLA - Rated Load Amps: The maximum current a compressor should draw under any operating conditions. Often mistakenly called running load amps which leads people to believe, …
RLA verses FLA - HVAC-Talk
Apr 14, 2008 · RLA is a mathematical calculation required to meet Underwriters Laboratories (UL) approval. The compressor manufacturer must run a series of tests to determine the Maximum …
Why do People Use RLA to Determine Compressor Amp Draw?
Oct 4, 2019 · This one bothers me. Technicians think the compressor RLA is the maximum current it will draw. To see how that isn't true, first we need to found out what the RLA is. RLA is short for Rated …
LRA CONVERSION TO TONNAGE - HVAC-Talk
Mar 3, 2006 · LRA & RLA conversions This thread brings a smile to my face, takes me back to the year 1982, the year I first enrolled in HVAC school! We did the same calculations, it was fun. I'm …
Compressor contactor ratings - HVAC-Talk
Feb 10, 2011 · Can someone provide an accurate explanation for compressor contactor ratings such as double pole, single pole,FLA, LRA,RLA,RES ,etcetera. I understand what each stands for (like FLA = …
Centrifugal chiller run unload vs starts - HVAC-Talk
Sep 25, 2023 · I've seen some with oversized motors not go below 70% of rla. Wsc with a vfd can unload to ~5% of the rated load. Look at the evap delta T and flow rate to determine capacity & % of …
Generator for central A/C based on LRA - HVAC-Talk
Aug 9, 2020 · I want a portable generator to handle a Trane 3-ton central air conditioner with a LRA of 63. I'm confused about the required watts to handle the A/C start-up and would appreciate …
Dunham Bush 540 TON Air-Cooled Chillers AT OVER 60 F
Feb 25, 2025 · QTY 4 Product Description Dunham-Bush AVX-A AVX-A 540M - AR H R 540 TON Air-Cooled Chillers Tag - CH-101, 102,103,104 Manufacturer DBM Base Price (R-134a Unit, Voltage: …
Why do AC motors pull high amps when they go bad?
Sep 5, 2021 · What is the explanation in terms of physics? Let's say that you are doing a tune up, and a compressor has a RLA of 6.0 amps. When you tested the amp draw on the compressor, the …