DMR20-1-ACV_V01 MURATA-PS | Alldatasheet
Document overview
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Technical content
Murata Power Solutions’ new DMR20-1-ACV self-powered, AC line-voltage monitors are designed to measure and display the true-rms voltage of AC power systems. Simply con- nect any 85 to 264Vac 50/60Hz power source and these meters are fully operational—no additional components or power sources are required. The unit can also measure distorted AC power sources including triangle, square, and the quasi-sine output of many DC to AC power inverters. The DMR20-1-ACV is housed in a rugged, round polycarbonate case that provides excellent protection against moisture, dust, shock and vibration. Panel installation is straightforward: Using readily available tooling, simply drill and punch a 1.2 inch (30.5mm) diameter hole and anti-rotation notch, insert the meter and gasket, and securely fasten the meter using the sup- plied hex nut. The supplied hardware is designed to provide protection to IP67/NEMA 6. Their large, 0.30"/7.6mm, bright LED displays can be easily read from 10 feet away (3 meters). These meters accurately display ac voltages with 0.1V resolution. A built-in reset- table fuse assures long term reliability. All DMR20-1-ACVs employ a 13-bit A/D converter and precision metal-film resistors to achieve outstanding performance over an operating temperature range of –25 to +60°C. ➀ Operation and accuracy at inputs above or below these ranges are not specified. Performance/Functional Specifications Typical at Ta = +25°C, Vin = 250Vac / 60Hz sine wave, unless otherwise noted AC Input (TB1) Voltage Range ➀ 85 to 264Vac (47-63 Hz) Current Consumption @Vin = 250Vac: 30mA (max.) @Vin = 120Vac: 15mA (max.) UL/IEC61010-1 Measurement Category II Performance Sampling Rate 2.5 readings/second Resolution 0.1Vac Accuracy @ +25°C ±0.6Vac (typ.), ±1.3Vac (max.) Temperature Drift (–25 to +60°C) ±0.05V/°C (max.) Mechanical Dimensions 1.50"diameter x 1.15 depth" (38.1 x 29.2mm) Display Type Four digit, LED, 0.30" high (7.6mm) Weight 0.8 ounce (23 grams) Case Material Polycarbonate Terminal Block Torque 2.2 lb·in (0.25 N·m) ±20% Wire Size And Type 18-22AWG (0.83-0.33mm2) copper, solid or stranded Wire Insulation Strip Length 0.25" (6.4mm) Environmental Operating Temperature –25 to +60°C Storage Temperature –40 to +75°C Humidity (non-condensing) 0 to 85%
Ordering Information
DMR20-1-ACV-R-C 85 to 264Vac voltage monitor (Red LED) Knockout Punches DMR20-1-KP 1.2" (30.5mm) Round knockout punch (no keying notch) DMR20-2-KP 1.2" (30.5mm) Round knockout punch (with four keying notches) DMR20-3-KP 1/8" and 3/16" (3.2 and 4.7mm) key-notch nibbler tool Note: An M30 x 1.5 nylon hex nut and EPDM sealing gasket are supplied with each meter. The “-C” suffix denotes RoHS compliance. E156931 www.murata-ps.com www.murata-ps.com/support For full details go to www.murata-ps.com/rohs DMR20-1-ACV Self-Powered, 85 to 264Vac, LED Display Line Monitor MPM_DMR20-1-ACV.B03 Page 1 of 4 NANO
FEATURES
Universal 85 to 264Vac measurement range Self-powered directly from the AC supply Installs in “oiltight”1.20 inch (30.5mm) round cutouts Four-digit LED display with overvoltage indication Reads true-rms value to 0.1V resolution Knockout punches and tooling available Digital replacement for analog panel meters Screw-style terminal block simplifies installation Self-resetting internal fuse for long-term reliability Provides moisture resistance to IP67/NEMA 6 Supplied with EPDM rubber gasket and plastic hex nut Approvals to UL/cUL/IEC/ 61010-1
any doubt regarding installation or operation.
- Measurement T ype: DMR20-1-ACV series AC voltmeters employ a
nents up to 65kHz will be measured with minimal additional error.
- Calibration: DMR20-1-ACV voltmeters are factory calibrated; there are
no provisions for calibrating these meters in the field.
- Operating Range: As the AC input voltage is lowered to 95.0Vac (50 or
mately one-second intervals.
- P anel Installation: All electrical connections to DMR20-1-ACV must
for typical panel mounting details. approximately 17 in-lbs (1.9 N-m). against environmental effects. vibration, dust, and moisture ingress.
- AC Input Fusing and Wiring: DMR20-1-ACV voltmeters contain an
applicable regulatory codes. used to supply power to external loads.
- AC Input P olarity and Grounding: The AC supply inputs TB1-A and
include, nor require, a connection to earth/chassis ground. Figure 1. Panel Installation
Dimensions are in inches (mm). Tolerances (unless otherwise specified): .XX ± 0.02 (0.51) Angles ± 2˚ Components are shown for reference only. 1.50 (38.1) 1.08 (27.4) 1.18 (29.8) 0.655 (16.64) 0.55 (14) 0.080 (2.03) 0.10 (2.5) 0.062 (1.58) 0.100 (2.54) 1.210 (30.73) AC VOLTS V TRUE RMS TB1A B Recommended panel cutout 3D models are available at www.murata-ps.com/en/3d/meters.html 1. Description of safety marks: Caution, risk of electrical shock Caution, risk of danger Equipment is protected throughout by double or reinforced insulation 2. Cleaning Instructions: Gently clean with dry cloth only. 3. Caution: if the equipment is used in a manner not specified by Murata Power Solutions, the protection provided by the equipment may be impaired. www.murata-ps.com/support DMR20-1-ACV Self-Powered, 85 to 264Vac, LED Display Line Monitor MPM_DMR20-1-ACV.B03 Page 3 of 4 NANO
The graphs below show typical DMR20-1-ACV readings when the unit is powered from six common ac-voltage waveforms. www.murata-ps.com/support Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2023 Murata Power Solutions, Inc. Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ DMR20-1-ACV Self-Powered, 85 to 264Vac, LED Display Line Monitor MPM_DMR20-1-ACV.B03 Page 4 of 4 NANO