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ACA-20RM-4-AC3-RL-C Datasheet(PDF) 4 Page - Murata Power Solutions Inc. |
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ACA-20RM-4-AC3-RL-C Datasheet(HTML) 4 Page - Murata Power Solutions Inc. |
4 / 5 page FRONT VIEW 1.280 (32.51) 0.187 (4.75) RECOMMENDED DRILL AND PANEL CUTOUT DIMENSIONS 1.826 (46.38) 0.838 (21.29) 1.626 (41.30) 1.07 (27.18) INTERNAL CORNER RADII: 0.032 (0.81) MAX. 0.093 (2.362) DIAMETER (4 REQUIRED) 0.116 (2.95) 1.336 (33.93) 0.145 (3.68) 0.55 (13.97) MPM_ACA-20RM_B02 Page 4 of 5 ACA-20RM Series True-RMS-AC Ammeters with Built-in CT Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com PANEL INSTALLATIONS BEZEL AND PANEL CUTOUT All connections to ACA-20RM Series ammeters must be made after the ammeter is securely attached to its panel and with all associated load and supply voltages de-energized (off). However, using extreme caution and observing all safety measures applicable to the user’s installation, 50A split-core CT models can be connected to energized current-carry- ing load conductors, but connections to TB1 must always be made with the ammeter’s power source off. Care should be exercised when passing the load-carrying conductor through the meter’s built-in CT---particularly when larger conductors are used. The installed wire-positions should be such that minimal mechani- cal forces are applied to the built-in CT, TB1, or to the ammeter itself. In high-vibration environments, it is strongly recommended that adequate strain reliefs be used for all load and supply wiring. Figure 4. Panel Installation Using Figure 4 as a guide, carefully insert the bezel/color filter assembly into the panel opening. From the rear of the panel, install the four round plastic standoffs over the bezel’s threaded studs. Install the pc-board assembly then attach and securely tighten all four hex nuts. Use only the factory-supplied hardware as the use of substitute hardware could result in an unsafe installation and/or adversely affect the reliability of the ammeter itself. The recommended range of panel thickness that can be used with the supplied hardware is 0.040 inches (1.0mm) to 0.125 inches (3.2mm). Panel thickness outside of this range will require additional user-supplied hardware and/or modifications. PANEL |
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