Performance/Functional Specifications

➀

The specified Full-Scale Current is the current carried by the single wire passing through

the center hole of the ACA5-20PC's on-board CT. It is not the load current ultimately being

measured. the Overcurrent Rating is a continuous rating that applies to the Full-Scale

Current. It does not apply to any circuitry external to the meter.

➁

Listed accuracy specifications apply over the range of the Rated Full-Scale Current over

frequencies of 45-450Hz.

➂

Maximum reverse polarity protection on "DC1" models is –40Vdc.

➃

All specified maximum power supply currents are steady-state. AC-powered models can

draw larger surges at initial turn on.

ACA5 - 20PC - 1 - AC1 - RL - C

1 = 50.0A

2 = 75.0A

3 = 100.0A

4 = 150.0A

5 = 199.9A

6 = 250A

7 = 300A

8 = 400A

9 = 500A

10 = 600A

11 = 750A

12 = 1000A

13 = 1500A

14 = 1999A

RL = Red Standard

AC1 = 85-264Vac@50/60Hz

DC1 = +5-40Vdc

Input Range:

(45-450Hz)

LED Color:

Power Supply:

Accessories: DMS-20-CP Panel cutout punch

A DMS-BZL4 bezel assembly with sealing gasket is supplied with each ammeter.

Matching 5A Current Transformers: 5A current transformers for all ACA5-20PC

ac ammeters are available from Murata Power Solutions at nominal cost. For

technical information, visit www.murata-ps.com, select Digital Panel Meters,

then Accessories.

Ordering Information

Add -C for RoHS

Full-Scale Current ➀ ➁

Min.

Typ.

Max.

Units

All Models

–

–

5.0

Amps

Overcurrent Rating ➀

1.5 x rated full-scale current

Performance

Sampling Rate

2.5 reading per second

Accuracy ➁

±0.15%FS ±6 Counts

Measurement Type

Sine wave input, full-wave averaging,

rms calibrated

Temperature Drift (0 = +60°C)

–

±0.2

±0.4

Cnts/°C

Zero Reading

“–001”

“000”

“001”

Counts

Dielectric Withstanding Voltage

2000

–

–

Vdc

Power Supply Voltage ➂

ACA-20PC-X-AC1-RL (47-99Hz)

85

120

264

Vac

ACA-20PC-X-DC1-RL

+4.75

–

+40

Vdc

Power Supply Current ➃

ACA-20PC-X-AC1-RL (47-99Hz)

–

30

50

mA

ACA-20PC-X-DC1-RL

–

+8

+12

mAdc

Power Supply Terminal Block

Wire Size and Type

16-22AWG (solid or stranded)

Insulation Strip Length

0.25 inches

Screw Tightening Torque

3.6 pounds/inches (0.4Nm)

Display

Display Type and Size

3½ digit, 0.37"/9.4mm high LED

Overrange Indication

“1_ _ _“

Decimal Point

Model dependent. See Ordering Info.

Physical/Environmental

Operating Temperature

0

–

+60

°C

Storage Temperature

–40

–

+75

°C

Humidity (non-condensing)

0

–

95

%

Case Material

Polycarbonate

Dimensions

1.38”W x 0.88”H. Depth is model depen-

dent (see mechanical specification)

Weight: (All models)

1.1 Ounces (31 grams)

7020-01036-0

7020-01037-0

7020-01038-0

7020-01039-0

7020-01040-0

7020-01041-0

39-3681407 *

39-3681408 *

39-3681409 *

7020-01042-0

7020-01043-0

7020-01044-0

7020-01045-0

7020-01046-0

5A CT Partno.

* Not RoHS Compliant

MPM_ACA520PC_B02 Page 2 of 5

ACA5-20PC Series

5 Amp Input LED-Display AC Ammeters

www.murata-ps.com

　

For full details go to

www.murata-ps.com/rohs

IMPORTANT! To ensure safe and reliable operation, ACA5-20PC

ammeters must be installed and serviced by qualified technical per-

sonnel. Contact Murata Power Solutions if there is any doubt regarding

ammeter installation and/or operation.

1

. Measurement Type: ACA5-20PC ac ammeters employ a full-wave-

rectified, average responding, rms-calibrated circuit to measure the

stepped-down output of their built-in L1 current transformer (CT) .

Stated accuracy specifications are measured using a sine-wave cur-

rent at or close to the full-scale input level, at nominal line frequency.

2. Calibration: Periodic recalibration of ACA5-20PC ammeters is not

required under normal, indoor operating environments. If user calibra-

tion is necessary, it should be performed by qualified technical personnel.

Calibration is performed with potentially lethal voltages applied to the

ACA5-20PC and its associated wiring, with the specified full-scale

current flowing through the ammeter’s built-in current transformer.

A plastic, fully-insulated adjusting tool must be used to access the

recessed calibration potentiometer located on the back of the meter

(see Mechanical Specifications). Contact MPS if additional information

is required regarding calibration, setup, or any other technical issue

pertaining to ACA5-20PC ammeters.

3. Wire Gauges and Fusing: Wires specified in the Functional Specifica-

tions section must be used for making connections to ACA5-20PC

Series ammeters. All power-supply and load wiring must be rated for

the supply voltages and currents they will conduct and must comply

with any code or application-mandated requirements pertaining to the

user’s specific installation.

TECHNICAL NOTES