ACA-20PC-4-AC3-GS Просмотр технического описания (PDF) - DATEL Data Acquisition products

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ACA-20PC-4-AC3-GS

Digital, LED-Display AC Ammeters with Built-in Current Transformers

DATEL Data Acquisition products  

ACA-20PC Series

3½ D I G I T , L E D D I S P L A Y , A C A M M E T E R S

Performance/Functional Specifications

Typical at TA = +25°C, unless otherwise noted. Œ

Rated Full-Scale Current 

Min. Typ. Max.

Units

ACA-20PC-1-XXX-XX

—

— 1.999

Amps

ACA-20PC-2-XXX-XX Ž

—

— 19.99

Amps

ACA-20PC-3-XXX-XX

—

— 50.0

Amps

ACA-20PC-4-XXX-XX

—

— 100.0

Amps

Overcurrent Rating 

1.5 x rated full-scale current

Performance

Sampling Rate

2.5 samples per second

Accuracy 

±0.15%FS ±6 counts

Measurement Type

Sine wave input, full-wave

averaging, rms calibrated

Temperature Drift (0 to +60°C)

— ±0.2 ±0.4

Counts/°C

Zero-Current Reading

–001 000 001

Counts

Dielectric Withstanding Voltage 2000 —

—

Vdc

Power Supply Voltage 

ACA-20PC-X-AC1-XX

85 120 264 Vac@47-99Hz

ACA-20PC-X-AC2-XX

85 120 140 Vac@350-450Hz

ACA-20PC-X-AC3-XX

240 264 310 Vac@47-99Hz

ACA-20PC-X-DC1-XX

+4.75 — +40

Vdc

ACA-20PC-X-DC2-XX

+36 — +75

Vdc

ACA-20PC-X-DC3-XX

+4.75 — +5.25

Vdc

Power Supply Current 

ACA-20PC-X-AC1,3-XX

—

30

50

mA@47-99Hz

ACA-20PC-X-AC2-XX

—

30

50 mA@350-450Hz

ACA-20PC-X-DC1,2-XX

— +8 +12

mAdc

ACA-20PC-X-DC3-XX

— +80 +120

mAdc

Power Supply Terminal Block

ACA-20PC-1-AC1-RL & ACA-20PC-2-AC1-RL

(2A and 20A ac-powered models with 4-position terminal blocks):

Wire Size & Type

12-20AWG (solid), 14-20AWG (stranded)

Insulation Strip Length

0.25 inches

Screw Tightening Torque

4.4 pound-inches (0.5Nm)

Maximum Rated Current

20A with 12AWG solid wire;

15A with 14AWG solid or stranded wire

Maximum Rated Voltage

630V (VDE 0110-V. Group 2);

250V (VDE 0110-V. Group 3)

ACA-20PC-X-XXX-XX

(All other ac/dc-powered models with 2-position terminal blocks):

Wire Size & Type

16-24AWG (solid or stranded)

Insulation Strip length

0.25 inches

Screw Tightening Torque

3.6 pound-inches (0.4Nm)

Maximum Rated Voltage

310Vac

Display

Display Type and Size

3½ digit LED, 0.37”/9.4mm digit height

Overrange Indication

"1_ _ _ "

Decimal Point

Fixed, model dependent

Physical/Environmental

Operating Temperature

0

— +60

°C

Storage Temperature

–40 — +75

°C

Humidity (non-condensing)

0

—

95

%

Case Material

Polycarbonate

Physical/Environmental

Dimensions

Weight:

ACA-20PC-1-XXX-XX

ACA-20PC-2-XXX-XX

ACA-20PC-3-XXX-XX

ACA-20PC-4-XXX-XX

1.38"W x 0.88"H Depth is model

dependent (see Mechanical Specifications)

1.1 ounces (31 grams)

1.1 ounces (31 grams)

1.3 ounces (37 grams)

1.5 ounces (43 grams)

ΠThe ACA-20PC-1-AC1-RL and ACA-20PC-2-AC1-RL have 4-position on-board terminal

blocks. All other models have 2-position terminal blocks.

 Specified full-scale currents are those passing through the built-in CT's primary (load) circuit,

over the frequency of 45-450Hz. The Overcurrent Rating is a continuous rating that applies to

the measured ac load current. It does not apply to any circuitry external to the meter.

Accuracy is guaranteed to the rated current.

 For the ACA-20PC-2-AC1-RL, if the load is connected to the meter's on-board 4-position

terminal block, the 20A full scale range requires 12AWG solid copper wire on all connections.

If 14AWG solid copper wire is used, the current should be limited to 15A. See Figure 3.

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

can draw higher surges at initial turn-on.

 Maximum reverse polarity protection on "DC1" models is –40Vdc, and –50Vdc on "DC2"

models. "DC3" models provide no reverse polarity protection.

Ordering Information

ACA - 20PC - 1 - AC1 - RL

Input Range:

1 = 1.999A

2 = 19.99A

3 = 50.0A

4 = 100.0A

LED Color:

RL = Red Standard

RH = High-Intensity Red*

GS = Green Standard*

Power Supply:

* Available on "DC3" +5V

powered models only

AC1 = 85-264Vac@50/60Hz

AC2 = 85-140Vac@400Hz

AC3 = 240-310Vac@50/60Hz

DC1 = +5-40Vdc

DC2 = +36-75Vdc

DC3 = +5Vdc

Accessories: DMS-20-CP Panel cutout punch

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

Technical Notes

IMPORTANT! To ensure safe and reliable operation, ACA-

20PC ammeters must be installed and serviced by qualified

technical personnel. Contact DATEL if there is any doubt

regarding ammeter installation and/or operation.

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

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

stepped-down output of their on-board, L1 current transformer (CT) .

Stated accuracy specifications are measured using a sine-wave

current at or close to the specified full scale input level, at nominal line

frequency.

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

required under normal, indoor operating environments. If user

calibration is necessary, it should be performed by qualified technical

personnel. Calibration is performed with potentially lethal voltages

applied to the ACA-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

DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • E–mail: sales@datel.com • Internet: www.datel.com

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