ACA-20RM-0-AC3-RL-C Murata Power Solutions Inc, ACA-20RM-0-AC3-RL-C Datasheet

Digital Panel Meters 199.9mAInput TrueRMS-AC

ACA-20RM-0-AC3-RL-C

Manufacturer Part Number
ACA-20RM-0-AC3-RL-C
Description
Digital Panel Meters 199.9mAInput TrueRMS-AC
Manufacturer
Murata Power Solutions Inc
Type
AC Ammetersr
Datasheet
1.ACA-20RM-5-AC3-RL-C.pdf (5 pages)

Specifications of ACA-20RM-0-AC3-RL-C

Equipment Type
AC Ammeters
Display Type
3 - 1/2 Digit LED
Primary Voltage Rating
85 V to 140 V
Secondary Current Rating
30 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
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www.murata-ps.com
Built-in CTs provide true-rms values of complex
waveforms
Perfect for measuring AC current in IT applications
Five ranges measure: 0-0.2A, 0-2A, 0-20A, 0-30A
and 0-50A
50A models features a split-core CT for easy installation
Self-powered from 85-140Vac or 170-264Vac
Large, easy-to-read, red LED display with 0.37” digits
Reliable single-board construction
Digital replacement for analog meters
UL and CSA recognized components
www.murata-ps.com/rohs
For full details go to
　
www.murata-ps.com/dpm
Murata Power Solution’s new ACA-20RM Series are the world’s fi rst digital ac-ammeters
to incorporate a built-in current transformer (CT) to directly measure the true-rms value of
complex, non-sinusoidal ac currents from 2 to 50A – no bulky and expensive 5A “donut”
CTs are required! Operation and setup is straightforward: simply pass the load-carrying
wire through the on-board CT, apply power, and the ammeter is fully operational.
0-20 amps (0.01A resolution), 0-30 amps (0.1A resolution) or 0-50 amps (0.1A resolution).
The 50A model features an oversized split-core current transformer that easily accommo-
dates wires sizes up to 4 AWG (21.2mm
(47-63Hz), and 170-264V (47-63Hz).
sumption from a nominal 120V or 220V ac supply is less than 50mA. And, precision auto-
zeroing circuitry, super-stable components, and an rms-to-dc converter circuit combine to
achieve excellent performance when measuring the complex, non-sinusoidal, ac currents
found in today’s computer/telecom equipment.
LED-displays and a built-in bezel/fi lter assembly that features metal fasteners. They are
panel-cutout compatible with MPS’s DMS-20 Series of ac voltage and frequency monitors,
making ACA-20RM ammeters perfect replacements for older, less reliable, analog panel
meters in today’s sophisticated IT instrumentation.
Five input ranges measure 0-0.2 amps (0.1mA resolution), 0-2 amps (0.001A resolution),
All models are totally self-contained; no external components are required. Power con-
ACA-20RM Series ammeters feature full-size, 0.37” (9.4mm) high, 3½ digit, bright red
True-RMS-AC Ammeters with Built-in CT
2
). Two power supply options are available: 85-140V
26 Jan 2011 MPM_ACA-20RM_B05 Page 1 of 5
ACA-20RM Series
email: sales@murata-ps.com

ACA-20RM-0-AC3-RL-C Summary of contents

Page 1

... True-RMS-AC Ammeters with Built-in CT Murata Power Solution’s new ACA-20RM Series are the world’s fi rst digital ac-ammeters to incorporate a built-in current transformer (CT) to directly measure the true-rms value of complex, non-sinusoidal ac currents from 2 to 50A – no bulky and expensive 5A “donut” ...

Page 2

... Stated accuracy is measured using a sine- wave input at, or close to, the specifi ed full scale input nominal line frequency of 60HZ. 2. Calibration: Periodic recalibration of ACA-20RM ammeters is not required under normal indoor environments. If user calibration is deemed necessary, it must be performed by qualifi ed technical personnel since potentially lethal voltages and currents are applied to the ACA-20RM during the calibration process ...

Page 3

... AC Supply Polarity and Grounding: The two supply inputs, TB1 ‘A’ and ‘B’, on ACA-20RM ammeters are not polarity sensitive, that is, they have no ‘AC LO’ or ‘AC HI’ designations. Also, ac-powered ACA-20RM amme- ters do not include or require a connection to earth/chassis ground. ...

Page 4

... PANEL INSTALLATIONS 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’ ...

Page 5

... CAL TB1 L1 0.35 (8.9) Diameter 0.250 (6.35) 1.00 (2.54) For 2A and 20A Models MECHANICAL DIMENSIONS: Inches (mm) TOLERANCES DEC ±0.02 (±0.51 DEC ±0.010 (±0.254) © 2011 Murata Power Solutions, Inc. email: sales@murata-ps.com 26 Jan 2011 MPM_ACA-20RM_B05 Page 1.750 (44.45) 0.26 (6.6) Diameter ...