An O ME GA Te c h n o l o g i e s Co m p a n y
M2107/1294
INSTRUCTION
SHEET
DP18 Series
Model DP18-RT1
True RMS Ammeter
CCD1294APC2BA
FIG. 3
A
C
E
G
F
D
B
SIGNAL INPUT
5 Aac.
A
SPAN
OFFSET
1
10
D
C
B
A
+
-
REAR VIEW
Setpoint R1
(option)
Setpoint R2
(option)
FRONT VIEW
FIG. 2
FIG. 1
SIGNAL
INPUT
SPAN : ADJUST THE MAXIMUM READING.
OFFSET : NOT IN SERVICE
SPAN ADJUSTMENT IS ACCESSIBLE BEHIND THE LOW DOOR.
Isolated digital output
(option)
RANGE SELECTION
0.01
0.1
S1 SELECTOR
HOLD,
latch the reading
display, while these pins
are linked
ANALOG OUTPUT
(OPTION)
POWER SUPPLY
see instrument label
150
150.0
B
400
400
G
500
500
F
600
600
E
750
750
D
1000
1000
C
1500
1500
B
2000
1999
A
CLOSE
RESOLUTION
READING
I NOMINAL
Amp.AC
Amp.AC
JUMPER
Amp.AC
Amp.AC
Amp.AC
5
5.00
F
10
10.00
C
15
15.0
B
40
40.0
G
50
50.0
F
60
60.0
E
75
75.0
D
100
100.0
C
JUMPER
Amp.AC
I NOMINAL
READING
CLOSE
RESOLUTION
B
C
SIGNAL CONDITIONER
COMPONENTS VIEW
IC2
0.1
1
PLACE THE PLUG-IN JUMPER ON THE
SELECTOR S1, IN FUNCTION OF THE
NOMINAL CURRENT
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
DISPLAYS . . . . . . . . . . . . . . . . . . . . . . 3 digits, 7 segment, red LED
HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . 0.56" (14.2 mm.)
SYMBOLS . . . . . . . . . . . . . . . . . . . . . . 1.8.8.8
DECIMAL POINTS . . . . . . . . . . . . . . . . Selectable by jumpers
OVERRANGE INDICATION . . . . . . . . . Display flashes 1999
INPUT CONFIGURATION . . . . . . . . . . . Bipolar single
ZERO . . . . . . . . . . . . . . . . . . . . . . . . . Automatic
SPAN ADJUSTMENT . . . . . . . . . . . . . . ± 5 %
CONVERTER . . . . . . . . . . . . . . . . . . . . Dual-slope, average value
SIGNAL INTEGRATION PERIOD . . . . . 80 ms.
READ RATE . . . . . . . . . . . . . . . . . . . . 3.12 / sec.
RANGES . . . . . . . . . . . . . . . . . . . . . . . See table selection fig. 3
HOLD . . . . . . . . . . . . . . . . . . . . . . . . . Optional
NOISE REJECTION NMR . . . . . . . . . . . 50 dB. 50/60 Hz.
ACCURACY . . . . . . . . . . . . . . . . . . . . 0.2 % ± 1 count
WARMUP TO RATED ACCURACY . . . 2 minutes
SPAN TEMPCO . . . . . . . . . . . . . . . . . . 150 ppm.
ZERO TEMPCO . . . . . . . . . . . . . . . . . . 2.5 µV/°C.
OPERATING TEMPERATURE . . . . . . . 0 to 50 °C (32 to 122 °F)
STORAGE TEMPERATURE . . . . . . . . . -40 to 80 °C (-40 to 176 °F)
WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . 310 gr. (0.68 lb)
CASE MATERIAL . . . . . . . . . . . . . . . . ABS, DIN 43700, black color
STANDARD POWER . . . . . . . . . . . . . . 115 Vac. ± 10 %, 50/60 Hz.
POWER CONSUMPTION . . . . . . . . . . . 5.5 VA for AC.
ELECTRICAL CONNECTIONS . . . . . . . Push-in cable connectors
BURN-IN . . . . . . . . . . . . . . . . . . . . . . . 24 h.
½
SPECIFICATIONS
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.
True RMS Ammeter for current transformer X/5
