DMS-20PC-1-LM-B-C Ver la hoja de datos (PDF) - Murata Power Solutions

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DMS-20PC-1-LM-B-C

Self-Powered 3 Digit, LED Display AC Line Voltage Monitors

Murata Power Solutions 

DMS-20PC-1-LM

Power Supply Polarity, Grounding, Fusing, and Wiring

1. Polarity and Grounding:

DMS-20PC-1-LM’s two ac-supply input terminals are not polarity sensitive,

that is, they have no “AC LO” or “AC HI” designations. These units do not

include nor require a connection to earth/chassis ground. All ac-supply wiring

must be rated for the voltages and currents they will conduct and comply

with any code or application-mandated requirements pertaining to the user’s

specific installation. Additional model-specific information is provided below.

2. UL Recognized Panel Mount Models with Screw Terminals:

C

®

US E156931

DMS-20PC-1-LM AC voltmeters are not internally fused. The supply wires

feeding these voltmeters must be fused with a 0.25A/250V time delay/time lag

fuse, in accordance with applicable regulatory codes. The rear threaded stand-

off input-terminals are to be used only for powering the voltmeter’s internal

circuitry; they must not be used to supply power to external loads.

The recommended wire size is 16AWG to 20AWG (1.31mm2 to 0.52mm2)

stranded copper wire. Wires must be properly stripped and attached to the

threaded standoffs such that their insulation is not pinched by the supplied

6-32 screws. Rated tightening torque for the 6-32 screws is 7 to 8 pound-

inches (0.8 to 0.9N-m). 300V UL rated wire suitable for the intended applica-

tion is required.

Self-Powered 3 Digit, LED Display

AC Line Voltage Monitors

3. UL Listed Models with “Plug-in” Blade Terminals:

Plug-in DMS-20PC-1-LM-XF models are not internally fused and must be

protected by an external current limiting circuit breaker or fuse in accordance

with applicable regulatory codes. These models are designed to be plugged

into NEMA 1-15R, NEMA 5-15R, and NEMA 5-20R receptacles.

4. Description of the safety marks:

Caution, risk of electrical shock

Caution, risk of danger

Equipment is protected throughout by double or reinforced insulation

5. Cleaning Instructions: Gently clean with dry cloth only.

6. Caution: if the equipment is used in a manner not specified by Murata

Power Solutions, the protection provided by the equipment may be

impaired.

1.30

(33.0)

#6-32

UNC THD

0.44

(11.2) 0.80

(20.3)

0.04

(1.016)

0.04

(1.016)

0.04

(1.016)

0.88 0.37

(22.4) (9.4)

0.75

(19.1)

0.32

(8.1)

1.00

(25.4)

#2-56 INSERT

0.156 (3.96) DEEP

0.19

(4.8)

1.38

(35.1)

1.07

(27.2)

0.10

(2.5)

Murata Power Solutions, Inc.

11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.

ISO 9001 and 14001 REGISTERED

www.murata-ps.com/support

DMS-BZL3-C

Optional Bezel

1.63 (41.4)

1.83 (46.5)

1.28

(32.5)

0.10

(2.5)

Dimensions in inches (millimeters)

Tolerances: 2 PL Dec ±0.02 (±0.51)

3 PL Dec ±0.010 (±0.254)

Recommended panel cutout dimensions:

1.336 (33.93)W × 0.838 (21.29)H

Internal corner radii 0.032 (0.81) Max.

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/

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.

© 2015 Murata Power Solutions, Inc.

MPM_DMS-20PC-1-LM.D01 Page 2 of 2

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