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ACA-20PC-3-AC1-RL-L-C Datasheet(PDF) 1 Page - Murata Power Solutions Inc. |
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ACA-20PC-3-AC1-RL-L-C Datasheet(HTML) 1 Page - Murata Power Solutions Inc. |
1 / 6 page AC INPUT POWER 3½ DIGIT A/D CONVERTER +V –V – + RMS-to-DC CONVERTER CAL. BUILT-IN CURRENT TRANSFORMER LED DISPLAY POWER CONVERTER TB1 A B (L1) MEASURED AC LOAD CURRENT ACA-20PC Series Digital, LED-Display AC Ammeters with Built-in Current Transformers www.murata-ps.com Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 For full details go to www.murata-ps.com/rohs SIMPLIFIED SCHEMATIC DIAGRAM Figure 1. ACA-20PC Series simplified schematic Now Available with Wire Lead CTs MPM_ACA_20PC.B05 Page 1 of 6 FEATURES ■ Built-in Current Transformers for direct measurement of 0 to 2/20/50/100 Amps ■ Functionally complete: On-board current transformers Scaling/interface circuitry Precision A/D converters Bright red LED displays ■ 8 different models ■ Subminiature, 1.38" x 0.88" package ■ Easy-to-read, 0.37"/9.4mm digits ■ AC powered models 85-264Vac @ 50/60Hz ■ "Self-powered" 85-264Vac, 2A and 20A models feature built-in load connections ■ +5-40V dc powered models ■ 2000V isolation; UL/CSA recognized DATEL's new ACA-20PC Series are the first digital ac ammeters to incorporate on-board current transformers (CT’s), and they are amazingly easy to use. Simply pass the current-carrying load wire through the ACA-20PC’s on-board CT, apply power to the meter's two supply terminals, and you’re instantly measuring ac currents over one of four ranges (0-2A with 1mA resolu- tion, 0-20A with 10mA resolution, or 0-50A and 0-100A with 100mA resolution). Absolutely no external components, such as expensive low-value shunts or 5A "donut" CT’s, are required. Meters are ac powered (120/220Vac @ 50/60Hz) or dc powered (+5-40V) and impose minimal loads (50mA max. and 120mA max., respectively) on their supplies. All models employ auto-zeroing circuits, precision bandgap references, and super stable thin-film resistors for unsurpassed accuracy (±0.15%FS) and stability. The functionally complete ACA-20PC ammeters provide all the scaling/interface circuitry to mate the CT’s output to a precision (3½ digit) A/D converter. The A/D's output goes directly to drivers for the meters’ large (0.37"/9.4mm digit height), easy-to-read, LED displays. AC-pow- ered units have on-board AC/DC converters, and wide-range dc-powered units have on-board linear regulators. AC-powered models can be powered by the same ac supply whose current they are monitoring. The 2A and 20A, 85-264Vac, 50/60Hz ("AC1") models feature additional on-board terminal blocks to supply power to the external load. All models provide 2000Vdc iso- lation between the measured ac current and their power supply, and all are UL/CSA recognized. Each meter is housed in a subminiature, 1.38" x 0.88", epoxy-encapsulated package. Total behind-the-panel installation depth is approximately 2 inches. |
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