ACA5-20RM-5-AC3-RL-C【PDF 2/5 页】AMMETER AC 200A 120VAC RED

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ACA5-20RM Series

True-rms-AC Ammeters with 5A CT Inputs

Performance/Functional Speci?cations

Typical at T A = +25°C, unless otherwise noted.

? The speci?ed full-scale current is the ac current circulating through the meter’s

built-in 5A current transformer’s primary circuit L1 (i.e., the external current

transformer’s 0-5A output current).

Full-Scale Primary Current ?

All Models

Min.

–

Typ.

–

Max.

5.0

Units

rms Amps

? The overcurrent rating of 1.5 times the rated full-scale current is a continuous

rms rating and applies to the current passing through the built in current trans-

Overcurrent Rating ?

1.5 x Rated full-scale rms current

former (CT). Accuracy is only guaranteed up to the rated full-scale CT current of

5Arms.

Display Readings with 5A Flowing through the Ammeter’s Current Transformer

? Speci?ed accuracy applies to inputs with crest factors (CF) up to 2.0, where CF

Model Number

ACA5-20RM-3-ACX-RL

ACA5-20RM-5-ACX-RL

ACA5-20RM-9-ACX-RL

Performance

Sampling Rate

Display Reading

100.0

199.9

500

2.5 Samples per second

= Vpeak/Vrms. Crest factors of 2 to 5 introduce an additional error of ±3% of full

scale. Ammeters are calibrated with a 5.00Arms/60Hz current ?owing through

the ammeter’s built-in 5A CT.

? All speci?ed maximum power supply currents are steady state; larger surge

currents can occur at initial turn-on.

Ordering Information

Accuracy ?

Input Frequency Range

Measurement Type

±0.4%FS ±3 Counts with 60Hz

Sine-Wave Input

47–63 Hz

rms Responding, Crest Factors of 1-5

ACA5-20RM-3-AC3-RL-C

ACA5-20RM-3-AC4-RL-C

ACA5-20RM-5-AC3-RL-C

ACA5-20RM-5-AC4-RL-C

100.0A Range, 85-140Vac power

100.0A Range, 170-264Vac power

199.9A Range, 85-140Vac power

199.9A Range170-264Vac power

Temperature Drift (0 to 60 °C)

–

±0.2

±0.4

Cnts/°C

Zero-Current Reading (within 30 sec.)

Breakdown Voltage

–001

2000

000

–

001

–

Cnts

Vdc

ACA5-20RM-9-AC3-RL-C

ACA5-20RM-9-AC4-RL-C

500A Range, 85-140Vac power

500A Range, 170-264Vac power

UL/IEC61010-1

Power Supply Voltage

Measurement category II

Accessory Current Transformers for above*:

ACA5-20RM-X-AC3-RL

ACA5-20RM-X-AC4-RL

85

170

120

220

140

264

Vac/47-63Hz

Vac/47-63Hz

7020-01038-0

7020-01040-0

39-3681409

100A Current Transformer, RoHS compliant

200A Current Transformer, RoHS compliant

500A Current Transformer, not RoHS compliant

Power Supply Current ?

ACA5-20RM-X-AC3-RL

ACA5-20RM-X-AC4-RL

—

—

30

30

50

50

mA/47-63Hz

mA/47-63Hz

* See data sheet titled “Current Transformers” at www.murata-ps.com for more

information

Power Supply Terminal Block (all models)

TECHNICAL NOTES

Wire Size

Insulation Strip Length

Screw Tightening Torque

Rated Voltage

Display

Display Type and Size

Overrange Indication

Display Reading/Decimal Point

Physical/Environmental

16-22AWG, Solid or stranded

0.250 inches

2.2 lb·in (0.25 N·m) ±20%

310Vac

3? Digit Red LED, 0.37”/9.4mm High

“1___ ”

Model dependent; see

“Display Readings” above

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

ammeters must be installed and serviced by quali?ed technical

personnel. Contact Murata Power Solutions if there is any doubt

regarding ammeter installation and/or operation.

1. Measurement Type: ACA5-20RM ac ammeters employ a true rms

input circuit to measure the output of external 5A current transform-

ers. Stated accuracy speci?cations are measured using a sine-wave

current at, or close to, the full-scale input range, at nominal line

frequency of 60Hz.

2. Calibration: Periodic recalibration of ACA5-20RM ammeters is

Operating Temperature

Storage Temperature

Humidity (non-condensing)

0

–40

–

–

–

–

+60

+75

85

°C

°C

%

not required under normal, indoor operating environments. If user

calibration is necessary, it should be performed by quali?ed technical

personnel. Calibration is performed with potentially lethal voltages

applied to the ACA5-20RM and its associated wiring, with 5.0 amps

Dimensions

Weight

All models

Model dependent, see page 4 & 5

1.1 Ounces (31 grams) nominal

?owing through the ammeter’s built-in toroid sensor. A plastic,

fully-insulated adjusting tool must be used to access the calibration

potentiometer located on the back of the meter (see Mechanical

Speci?cations). Contact MPS if additional information is required

regarding calibration, setup, or any other technical issue pertaining to

ACA5-20RM ammeters.

www.murata-ps.com/support

MPM_ACA5-20RM.A08 Page 2 of 5

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