DATEL ACA5-20PC-9-DC3-RL, ACA5-20PC-9-DC3-RH, ACA5-20PC-9-DC3-GS, ACA5-20PC-9-DC2-RL, ACA5-20PC-9-DC1-RL Datasheet

®

®

Order on-line

at www.datel.com

E156931

Features

∙Scales and displays the output of 50:5A to 2000:5A current transformers

∙14 ranges (0-50 Amp to 0-2000 Amp)

∙3 LED options, 6 power options, 112 models

∙Functionally complete:

On-board 5A current transformers

Scaling/interface circuitry

Precision A/D converters

Bright red or green LED displays

∙Subminiature, 1.38" x 0.88" package

∙Easy-to-read, 0.37"/9.4mm digits

∙AC powered models: 120Vac @ 400Hz, 120/220/277Vac @ 50/60Hz

∙AC models can be "self-powered"

∙DC powered models: +5V, +5-40V, +36-75V

∙2000V isolation; UL/CSA recognized

∙Digital replacements for analog ammeters

ACA5-20PC Series

Digital-Readout

LED-Display

50-2000A AC Ammeters

ACA5-20PC Series AC Ammeters are designed to scale and digitally display the output of standard, 5A-output current transformers (50:5A, 500:5A, 1000:5A, etc.). Simply pass the secondary/output wires of the "primary" CT through the ACA5-20PC's on-board CT, apply power to the meter, and you're instantly measuring ac currents over one of 14 ranges from 0-50A (with 100mA resolution) to 0-2000A (with 1A resolution). Because they accept outputs from previously installed high-current CT's, ACA5-20PC's can instantly bring modern digital precision to older ac ammeters.

The functionally completeACA5-20PC ammeters incorporate scaling/interface circuitry to mate the on-board CT to a precision (3½ digit) A/D converter. The A/D's output directly drives the meters' large (0.37"/9.4mm digit height), easy-to-read, LED displays. All models employ auto-zero circuits, precision bandgap references, and super stable metal-film resistors for unsurpassed accuracy (±0.15%FS) and stability.

ACA5-20PC meters are either ac (120/220/277Vac @ 50/60Hz or 120Vac @ 400Hz) or dc (+5V, +5-40V, or +36-75V) powered.AC models can be powered by the same ac supply whose current they are monitoring. All ACA5-20PC's provide 2000Vdc isolation between the measured ac current and their power supply, and all models are UL/CSA recognized.

Each meter is housed in a subminiature, 1.38" x 0.88", epoxy-encapsulated package whose behind-the-panel installation depth is 2 inches. Display color options include standard red, high-intensity red, and standard green. Each meter is supplied with a plastic bezel assembly with sealing gaskets (DATEL DMS-BZL4).

CAL.

+

3½ DIGIT

A/D CONVERTER

–

+V

–V

LED DISPLAY

PRECISION

FULL-WAVE

RECTIFIER

			POWER
	(L1)		CONVERTER
BUILT-IN
			A	B
0-5A CURRENT
TRANSFORMER			+	–

TB1

	OUTPUT FROM 50:5A
	TO 2000:5A EXTERNAL	AC or DC
	CURRENT TRANSFORMER
		INPUT POWER

Figure 1. ACA5-20PC Series Simplified Schematic

DATEL, Inc., Mansfield, MA 02048 (USA) ∙ Tel: [phone] Fax: [phone] ∙ E–mail: [e-mail] ∙ Internet: www.datel.com

	ACA5-20PC Series			5 A I N P UT , 3 ½ D I G I T , L E D D I S P LA Y ,				A C A M M E T E R S
	Performance/Functional Specifications					Order on-line at www.datel.com
	Typical at TA = + 25°C, unless otherwise noted.
	Rated Full-Scale Current	Min.	Typ.	Max.	Units	Ordering Information
	All Models	—	—	5.0	Amps	ACA5 - 20PC - 1 - AC1 - RL
	Overcurrent Rating		1.5 x rated full-scale current
	Performance					Input Range:
	Sampling Rate		2.5 samples per second
						1 = 50.0A		LED Color:
	Accuracy		±0.15%FS ±6 counts
						2 = 75.0A		RL =	Red Standard
	Measurement Type		Sine wave input, full-wave
						3 = 100.0A		RH = High-Intensity Red*
			averaging, rms calibrated			4 = 150.0A		GS =	Green Standard*
	Temperature Drift (0 to +60°C)	—	±0.2	±0.4	Counts/°C	5 = 199.9A			* Available on "DC3" +5V
	Zero-Current Reading	-001	000	001	Counts	6 = 250A	Power Supply:		powered models only
						7 = 300A
	Dielectric WithstandingVoltage	2000	—	—	Vdc		AC1 = 85-264Vac@50/60Hz
	Power SupplyVoltage					8 = 400A	AC2	= 85-140Vac@400Hz
						9 = 500A
	ACA5-20PC-X-AC1-XX	85	120	264	Vac@47-99Hz		AC3	= 240-310Vac@50/60Hz
						10 = 600A
	ACA5-20PC-X-AC2-XX	85	120	140	Vac@350-450Hz		DC1	= +5-40Vdc
						11 = 750A
							DC2	= +36-75Vdc
	ACA5-20PC-X-AC3-XX	240	264	310	Vac@47-99Hz
						12 = 1000A
							DC3	= +5Vdc
	ACA5-20PC-X-DC1-XX	+4.75	—	+40	Vdc	13 = 1500A
	ACA5-20PC-X-DC2-XX	+36	—	+75	Vdc	14 = 1999A
	ACA5-20PC-X-DC3-XX	+4.75	—	+5.25	Vdc	Accessories: DMS-20-CP Panel cutout punch
	Power Supply Current
						A DMS-BZL4 bezel assembly with sealing gasket is supplied with each ammeter.
	ACA5-20PC-X-AC1,3-XX	—	30	50	mA@47-99Hz
	ACA5-20PC-X-AC2-XX	—	30	50	mA@350-450Hz
	ACA5-20PC-X-DC1,2-XX	—	+8	+12	mAdc
	ACA5-20PC-X-DC3-XX	—	+80	+120	mAdc	Technical Notes
	Power Supply Terminal Block
	Wire Size &Type		16-22AWG (solid or stranded)			IMPORTANT! To ensure safe and reliable operation, ACA5-20PC
	Insulation Strip Length			0.25 inches
						ammeters must be installed and serviced by qualified technical
	Screw Tightening Torque		3.6 pound-inches (0.4Nm)			personnel. Contact DATEL if there is any doubt regarding
	Maximum RatedVoltage			310Vac		ammeter installation and/or operation.
	Display					1. Measurement Type: ACA5-20PC ac ammeters employ a full-wave-
	Display Typeand Size	3½ digit LED, 0.37"/9.4mm digit height
						rectified, average responding, rms-calibrated circuit to measure the
	Overrange Indication			"1_ _ _"		stepped-down output of their built-in L1 current transformer (CT) .
	Display Reading/Decimal Point	Model dependent. See Ordering Info.				Stated accuracy specifications are measured using a sine-wave
	Physical/Environmental					current at or close to the full-scale input level, at nominal line
	Operating Temperature	0	—	+60	°C	frequency.
	Storage Temperature	–40	—	+75	°C	2. Calibration: Periodic recalibration of ACA5-20PC ammeters is not
	Humidity (non-condensing)	0	—	95	%	required under normal, indoor operating environments. If user
	Case Material			Polycarbonate		calibration is necessary, it should be performed by qualified technical
	Dimensions	1.38"W x 0.88"H Depth is model				personnel. Calibration is performed with potentially lethal voltages
		dependent (see Mechanical Specifications)				applied to the ACA5-20PC and its associated wiring, with the specified
	Weight (all models)		1.1 ounces (31 grams)			full-scale current flowing through the ammeter’s built-in current
						transformer. A plastic, fully-insulated adjusting tool must be used to
	The specified Full-Scale Current is the current carried by the single wire passing through the					access the recessed calibration potentiometer located on the back of
	center hole of the ACA5-20PC's on-board CT. It is not the load current ultimately being					the meter (see Mechanical Specifications). Contact DATEL if additional
	measured. the Overcurrent Rating is a continuous rating that applies to the Full-Scale					information is required regarding calibration, setup, or any other
	Current. It does not apply to any circuitry external to the meter.
	Listed accuracy specifications apply over the range of the Rated Full-Scale Current over					technical issue pertaining to ACA5-20PC ammeters.
	frequencies of 45-450Hz.					3. Wire Gauges and Fusing: Wires specified in the Functional
	Maximum reverse polarity protection on "DC1" models is –40Vdc, and –50Vdc on "DC2"
						Specifications section must be used for making connections to ACA5-
	models. "DC3" models provide no reverse polarity protection.
	All specified maximum power supply currents are steady-state. AC-powered models can					20PC Series ammeters. All power-supply and load wiring must be
	draw larger surges at initial turn on.					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.
	DATEL, Inc., Mansfield, MA 02048 (USA)		∙ Tel: [phone]			Fax: [phone]	∙ E–mail: [e-mail] ∙ Internet: www.datel.com

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