DMS-30798-C Murata Power Solutions Inc, DMS-30798-C Datasheet

AMMETER LED 85-264VAC 30A RED

DMS-30798-C

Manufacturer Part Number
DMS-30798-C
Description
AMMETER LED 85-264VAC 30A RED
Manufacturer
Murata Power Solutions Inc
Series
ACA-20PCr
Type
Ammeterr
Datasheet
1.ACA-20PC-3-AC1-RL-C.pdf (6 pages)

Specifications of DMS-30798-C

Measuring Range
0 ~ 30A
Display Style
Red Characters, Black Background
Display Type
LED
Display Face Size
1.30" L x 0.80" W (33.0 x 20.3mm)
Display Digits
3.5
Display Digits - Height
0.370" (9.40mm)
Backlight
Without
Mounting Type
Panel Mount
Termination
Wire Leads
Voltage - Supply
85 ~ 264VAC
No. Of Digits / Alpha
3-1/2
Meter Function
AC Ammeter
Meter Range
0A To 30A
Digit Height
9.4mm
Operating Temperature Range
0°C To +60°C
Meter Signal Input
Current
Character Size
0.37"
Meter Output
Current
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
811-1102
FEATURES
■
■
■
■
■
■
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www.murata-ps.com
SIMPLIFIED SCHEMATIC DIAGRAM
Built-in Current Transformers for direct measurement
of 0 to 2/20/50/100 Amps
Functionally complete:
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
On-board current transformers
Scaling/interface circuitry
Precision A/D converters
Bright red LED displays
www.murata-ps.com/rohs
For full details go to
　
TRANSFORMER
CURRENT
BUILT-IN
www.murata-ps.com/dpm
LOAD CURRENT
MEASURED AC
CONVERTER
RMS-to-DC
DATEL's new ACA-20PC Series are the fi rst 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.
minimal loads (50mA max. and 120mA max., respectively) on their supplies. All models employ
auto-zeroing circuits, precision bandgap references, and super stable thin-fi lm resistors for
unsurpassed accuracy (±0.15%FS) and stability.
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.
behind-the-panel installation depth is approximately 2 inches.
(L1)
Meters are ac powered (120/220Vac @ 50/60Hz) or dc powered (+5-40V) and impose
The functionally complete ACA-20PC ammeters provide all the scaling/interface circuitry to
Each meter is housed in a subminiature, 1.38" x 0.88", epoxy-encapsulated package. Total
+
–
+V
AC INPUT POWER
A/D CONVERTER
CONVERTER
CAL.
A
POWER
3½ DIGIT
B
Digital, LED-Display AC Ammeters with
TB1
–V
Figure 1. ACA-20PC Series simplifi ed schematic
16 Feb 2011 MPM_ACA_20PC.B08 Page 1 of 6
Built-in Current Transformers
ACA-20PC Series
LED DISPLAY
email: sales@murata-ps.com

DMS-30798-C Summary of contents

Page 1

FEATURES ■ Built-in Current Transformers for direct measurement 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 ■ ...

Page 2

... Maximum reverse polarity protection on "DC1" models is –40Vdc. Ordering Information 0.25 inches DMS-30798-C: 30Amp model with a wire lead CT and “-AC1” 0.25 inches power supply specifi cations. See Mechanical section for dimensions. Accessories: DMS-20-CP Panel cutout punch A DMS-BZL4-C bezel assembly with sealing gasket is supplied with each ammeter. ...

Page 3

... Following the four-step sequence shown in Figure 2 below—being careful not to apply excessive force or twisting motions—insert the ammeter into the panel opening. When using the DMS-BZL4 bezel assembly, install its sealing gasket positioned between the ammeter’s front fl ange and panel front surface (see Mechanical Specifi ...

Page 4

Step 1. Panel TYPICAL WIRING DIAGRAM First pass and carefully dress one external load wire through the on-board CT (L1). Then connect the ac supply and load wires to TB1 as shown. If required, verify that correct line-power polarities are ...

Page 5

MECHANICAL SPECIFICATIONS ACA-20PC-1 & 2-AC1-RL 2A and 20A, 85-264V ac-powered models Hole Diameter: 0.27 (6.9) min. 1.00 (25.4) 0.040 (1.02) 0.040 1.30 0.040 (1.02) (33.0) (1.02) 1.38 (35.1) FRONT VIEW CAL. ACA-20PC-3 Series 50A models Hole Diameter: 0.35 (8.9) min. ...

Page 6

... MECHANICAL SPECIFICATIONS, CONTINUED ACA-20PC-4-XXX-L (100A model) DMS-30798-C (30A model) OD: 100A Model: 1.18 (30.0) DMS-30798-C (30A): 0.87 (22.0) ID: 100A Model: 0.58 (14.7) DMS-30798-C (30A): 0.35 (8.9) Lead Length: 2.0 (50.5) min. 1.00 (25.4) 0.040 (1.02) 0.040 1.30 0.040 (1.02) (33.0) (1.02) 1.38 (35 ...