Model
product brand name	SENTRON
product designation	Multimeter
design of the product	basic
product type designation	7KM PA3220
Measurements
measuring procedure ● for voltage measurement ● for current measurement	TRMS TRMS
type of measured value detection	complete
voltage curve	Sinusoidal or distorted
measurable line frequency ● initial value 45 Hz ● full-scale value	45 Hz 65 Hz
operating mode for measured value detection automatic line frequency detection	Yes
operating mode for measured value detection ● set at 50 Hz ● set to 60 Hz	No No
Supply voltage
design of the power supply	Extra-low voltage power supply unit
type of voltage of the supply voltage	DC
supply voltage at DC	24 … 60 V
Degree of protection protection class
protection class IP on the front	IP65
Suitability
suitability for operation	Installation in stationary panels in closed rooms
Product Functions
product function ● voltage measurement ● current measurement ● active power measurement ● reactive power measurement ● frequency measurement	Yes Yes Yes Yes Yes
Display and operation
design of the display	LCD
height of the display	54 mm
width of the display	72 mm
color of the background of the display	white
illuminance of display backlight adjustable	No
time-controlled reduction of the illuminance of display backlight possible	Yes
display contrast adjustable	Yes
national language on the display screen is supported	de, en, fr, spa, ita, por, tur, chi, pol
number of keys	4
Communication
transfer rate minimum	10 000 kbit/s
transfer rate maximum	101 000 kbit/s
number of interfaces according to Fast Ethernet	2
type of electrical connection of the fast Ethernet interface	2 x RJ45
protocol at the Ethernet interface is supported	MODBUS TCP
Fault limits
reference condition for metering accuracy	In accordance with IEC61557-12, IEC62053-22 and IEC62053-23
formula for relative total measurement inaccuracy ● for measured variable voltage ● for measured variable current ● for measured variable active power ● for measured variable reactive power ● for measured variable output factor ● for measured variable active energy ● for measured variable reactive energy	+/- 0.2 % +/- 0.2 % +/- 0.5 % +/- 1 % +/- 0,5 % Cl. 0.5 acc. to… IEC62053-22 Class 2 according to IEC61557-12 and/or IEC62053-23
Inputs Outputs
number of digital inputs	2
type of electrical connection at the digital inputs	screw-type terminals
operating conditions for digital inputs external voltage supply	Yes
input voltage at digital input at DC maximum	30 V
input current at digital input ● initial value for signal<1>-recognition	7 mA
number of digital outputs	2
type of switching output	bidirectional
digital output version	switching or pulse output function
operating voltage as output voltage at DC maximum permissible	30 V
type of electrical connection at the digital outputs	screw-type terminals
output current ● at the digital outputs at DC limited to 100 ms maximum	130 mA
internal resistance at the digital outputs	55 Ω
standard for pulse emitter	according to IEC62053-31
pulse duration ● initial value ● full-scale value	30 ms 500 ms
adjustable time period minimum	10 ms
switching frequency at digital output maximum	17 Hz
property of the output short-circuit proof	Yes
Measuring inputs
measurable supply voltage between (PE)N and L at AC maximum rated value	400 V
measurable supply voltage between (PE)N and L at AC ● minimum ● maximum	11.5 V 480 V
measurable supply voltage between the line conductors at AC maximum rated value	690 V
voltage measuring range extension with external voltage transformers	yes
line conductors and neutral conductors internal resistance for voltage measurement	1.5 MΩ
measuring category for voltage measurement	CAT III
measurable current ● 1 at AC rated value ● 2 at AC rated value	1A 5A
relative measurable current at AC ● minimum ● maximum	1% 100%
current measuring range extension with external current transformers	Yes
zero point suppression for current measurement	0…10%
apparent power consumption for current measurement ● with measuring range 5 A per phase	0.3 VA
measuring category for current measurement	CATIII
Connections
type of electrical connection ● at the measurement inputs for voltage ● at the measurement inputs for current	screw-type terminals screw-type terminals
Mechanical Design
fastening method DIN-rail mounting	No
size of Power Monitoring Device	size 96
height	96 mm
width	96 mm
depth	56 mm
installation depth	51 mm
net weight	325 g
mounting position	vertical
Environmental conditions
ambient temperature during operation ● minimum ● maximum	-25 °C 55 °C
ambient temperature during storage ● minimum ● maximum	-25 °C 70 °C
relative humidity at 25 °C without condensation during operation maximum	75%
installation altitude at height above sea level maximum	2 000 m
degree of pollution	2