D e l t a M u lt i- C ir c u i t P o w e r M e t e r D P M - M A11 2 1 U s e r M a n u a l
2 - 2
_2
2.1
Electrical Specification
Input
Wiring
method
DC Voltage, 5 Hall sensor
Voltage
10~100VDC
Current
Determined with ±4V external Hall sensor
Operation
Measuring Category
：
CAT II
Power
Functional Range
20 ~ 56 VDC
（
Power consumption 4W
）
Communicatio
n Interface
RS-485 Interface
MODBUS-RTU
Baud Rate 1200 / 2400 / 4800 / 9600 / 19200 / 38400 bps
Exterior
Dimensions (W x H x D)
54 * 81 * 65.5 mm
IP Protections
IP20
Environment
Operating Temperature
0°C ~ +60°C
（
32°F ~ +140°F
）
Storage Temperature
- 20 °C ~ +70 °C
（
-4°F ~ +158°F
）
Relative Humidity
0~ 80 % RH Non-condensing
Altitude
Below 2000 meters
Display
Screen display type
LCD display
Background light
White backlight
Electromagnetic compatibility
Electrostatic discharge
IEC 61000-4-2:2008
Immunity to radiated fields
IEC 61000-4-3:2006+A1:2007+A2:2010
Immunity to fast transients
IEC 61000-4-4:2012
Immunity to impulse waves
IEC 61000-4-5:2014+A1:2017
Conducted immunity
IEC 61000-4-6:2013/COR1:2015
Immunity to magnetic fields
IEC 61000-4-8:2009
Harmonics emissions
EN 61000-3-2:2014
Flicker emissions
EN 61000-3-3:2013
Accuracy Class
Quantity of
electricity
Voltage, Current
± 0.5 %
Energy
±0.5%
Power
± 0.5 %
