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LEM EM4TII+ - 7 Technical Data; General Specifications

LEM EM4TII+
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05November2020/V1.0 Page 32/33
7. Technical data
7.1 General specifications
Measuring input channels
• 4 galvanic isolated inputs for connection of U- and I-sensors
(either for AC, DC or ACDC), or
• for connection of one U-sensor (DC) and up to three
I-sensors (DCDCDC)
Ranges for rated input values
Rated voltage (secondary)
Rated current (secondary)
AC: 70 – 300 V or 17,9 – 100 mA
DC: 17,9 – 100 mA
AC: 50 – 2000 mA or 5A
DC: 50 – 2000 mA
Accuracy
Class 0,5 R (acc. to EN 50463-2) for ranges specified in the
line above.
In case of rated input values out these limits or for a multi-
system energy meter the class accuracy may be higher (0,75R
or 1,0R).
Frequency
DC, 16,7 Hz, 50Hz and 60 Hz
Sampling interval
4800 Hz
ADC resolution
16 Bit
Load profile
• Recording of consumed and regenerated active and reactive
energy, units kWh or kvarh
• Recording period length min. 1 minute
• Recording of location and status information according to
EN 50463-3
• Memory depth at least 300 days for 5-minute period length (60
days for 1 minute period length)
Clock accuracy
< 20 ppm
Interfaces
• 1 x RS-interface (bidirectional, RS232, RS422 or RS485) with
2 connections in parallel (screw terminals and pin header), e.g.
for modem connection; data protocol according to EN 50463-3
and IEC 62056-21.
• 1 x RS232 (unidirectional) for registration of GPS-data
telegrams according to NMEA 0183
Display
LCD, self-luminous, letter height approx. 4 mm
Degree of protection
IP 65
Supply voltage
24 – 48 or 72 – 110 V (according to EN 50155),
Power consumption (without modem) 3 W,
Inrush current 500 mA max (without modem supply)
Supply voltage for modem
(optional)
12 V continuous load 3W, peak value 6W
Daily modem reset by EM4TII+
Temperature ranges
Operating temperature: -40 °C – +75 °C (limited legibility of the
display screen is to be expected between –40 °C and –30 °C)
Storage temperature: -40 °C – +85 °C
Altitude range Application area
EN 50125-1:2014: Class A1 (max. 1400m)
Connections
Terminal blocks inside the device
Dimensions
165 x 289 x 70 mm (W x H x D)
Weight
approx. 1,5 kg