Omega DP18-RT1 specifications Specifications, Front View, Rear View, Range Selection, S1 Selector

An OME GA Te c h n o l o g i e s Co m p a n y

DP18 Series

Model DP18-RT1

True RMS Ammeter

INSTRUCTION

SHEETM2107/1294

True RMS Ammeter for current transformer X/5

3 ½ DIGITS AC AMMETER, TRUE-RMS VALUES, WITH SELECTABLE RANGES ON THE SIGNAL CONDITIONER BY PLUG-IN JUMPERS. THE READING CAN NOT BE MODIFIED IN ENGINEERING UNITS, UNLESS THE AMPLIFIER IS MODIFIED. THEREFORE USING THE STANDARD AMPLIFIER THE DISPLAY WILL SHOW THE VALUES INDICATED ON THE TABLE. THE INPUT ALLOWS DIRECT CONNECTION TO A CURRENT TRANSFORMER (CT) WITH A 5 Aac. SECONDARY, WITHOUT NEED FOR AN INTERMEDIATE STEP DOWN.

SPECIFICATIONS

DISPLAYS	3 ½ digits, 7 segment, red LED
HEIGHT	0.56" (14.2 mm.)
SYMBOLS	1.8.8.8
DECIMALPOINTS	Selectable by jumpers
OVERRANGEINDICATION	Display flashes 1999
INPUTCONFIGURATION	Bipolar single
ZERO	Automatic
SPANADJUSTMENT	± 5 %
CONVERTER	Dual-slope, average value
SIGNALINTEGRATIONPERIOD	80 ms.
READ RATE	3.12 / sec.
RANGES	See table selection fig. 3
HOLD	Optional

NOISEREJECTIONNMR . . . . . . . . . . . 50 dB. 50/60 Hz. ACCURACY . . . . . . . . . . . . . . . . . . . . 0.2 % ± 1 count WARMUP TO RATED ACCURACY . . . 2 minutes SPANTEMPCO . . . . . . . . . . . . . . . . . . 150 ppm.

ZEROTEMPCO . . . . . . . . . . . . . . . . . . 2.5 µV/°C.

OPERATINGTEMPERATURE . . . . . . . 0 to 50 °C (32 to 122 °F) STORAGETEMPERATURE . . . . . . . . . -40 to 80 °C (-40 to 176 °F) WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . 310 gr. (0.68 lb)

CASE MATERIAL . . . . . . . . . . . . . . . . ABS, DIN 43700, black color STANDARDPOWER . . . . . . . . . . . . . . 115 Vac. ± 10 %, 50/60 Hz. POWERCONSUMPTION . . . . . . . . . . . 5.5 VA for AC. ELECTRICALCONNECTIONS . . . . . . . Push-in cable connectors BURN-IN . . . . . . . . . . . . . . . . . . . . . . . 24 h.

FIG. 1 FRONT VIEW

SPAN OFFSET

SPAN : ADJUST THE MAXIMUM READING.

OFFSET : NOT IN SERVICE

SPAN ADJUSTMENT IS ACCESSIBLE BEHIND THE LOW DOOR.

REAR VIEW

FIG. 2	Setpoint R2		Setpoint R1
	(option)		(option)
Isolated digital output
(option)
	D
SIGNAL	C		1
	B 10
INPUT	A
ANALOG	OUTPUT	+
		-
(OPTION)
HOLD, latch the reading
display, while these pins			POWERSUPPLY
are linked
			see instrument label

FIG. 3

SIGNALINPUT

5 Aac.

RANGE SELECTION

	B		D	F
	IC2
C	A	C	E	G
B	SIGNALCONDITIONER
A	COMPONENTSVIEW

S1 SELECTOR

PLACE THE PLUG-IN JUMPER ON THE SELECTOR S1, IN FUNCTION OF THE

NOMINALCURRENT TRANSFORMER, AND THE DECIMAL

POINT JUMPER ON THE CORRESPONDING POSITION (FIG. 5). TO OBTAIN THE INDICATED PERFOR-

MANCE, USE CURRENT TRANSFORMERS CLASS 0.5 OR BETTER

I NOMINAL	READING	CLOSE	RESOLUTION
Amp.AC	Amp.AC	JUMPER	Amp.AC
5	5.00	F	0.01
10	10.00	C
15	15.0	B
40	40.0	G
50	50.0	F	0.1
60	60.0	E
75	75.0	D
100	100.0	C

I NOMINAL	READING	CLOSE	RESOLUTION
Amp.AC	Amp.AC	JUMPER	Amp.AC
150	150.0	B	0.1
400	400	G
500	500	F
600	600	E
750	750	D	1
1000	1000	C
1500	1500	B
2000	1999	A

CCD1294APC2BA