SMS ISKRA MT375 - Technical Data

Mx37y_Technical_Description_ENG_v2.00.doc
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Mx37y
─ Single- and three-phase electronic meters with built-in DLC
modem, GSM/GPRS modem or RS485 comm. interface
Outputs
Hardware type Function
Terminal
High voltage (250 V, 100
mA)
Optomos 33
Common 35
High voltage (250 V, 6 A) Load control 34
Communication interface – M-Bus
Hardware type Function
Terminal
Communication interface Common 90
Communication interface Mini master 91
13. Technical data
GENERAL METER MEASURING CHARACTERISTICS
Accuracy class
- Active: 2 or 1 (IEC 62052-11)
Active: A or B (MID)
- Reactive: 3 or 2 (IEC 62052-11)
- Apparent energy measurement,
3.0%
Nominal current 5 A
Max. current –
direct connection
85 A
Max. current –
direct connection
120 A
I
max
– transformer
connection
6 A
Thermal current 1.2 I
max
– direct connection
Starting current
<0.005 I
b
at cos ϕ = 1, for class 2
<0.004 I
b
at cos ϕ = 1, for class 1
Short-circuit
current
30 I
max
Nominal voltage
3x230/400 V, 3x400 V
other voltages on request
Voltage range 0.8 U
n
... 1.15 U
n
Nominal frequency 50 Hz or 60 Hz
Meter constant
(impulse LED),
active and reactive
measurement
1000 imp/kWh at Imax = 85 A
500 imp/kWh at Imax = 120 A
10000 imp/kWh at Imax = 6 A
Temperature
range of operation
-25 ° C ... +60 ° C
Extended
temperature range
-40 ° C ... +70 ° C
Storing
temperature
-40 ° C ... +80 ° C
Voltage circuit
self-consumption
< 2 W / 10 VA
Current circuit self-
consumption
< 0.16 VA irrespective of nominal
current I
n
INTERNAL CLOCK
Accuracy (@25 ° C) ≤ 5 ppm or ≤ ± 3 min / year
Reserve power
supply
> 150 hours, super-capacitor
Clock signal Quartz crystal 32 kHz
OPTICAL COMMUNICATION INTERFACE
Interface IEC62056-21 Mode E,
Protocol
IEC62056-46,
Registers marking in compliance
with OBIS (IEC62056-61)
Transmission rate 19200 bit/sec
DLC modem
Protocol DLMS (IEC 62056-46),
Data identification
code
OBIS (IEC 62056-61)
Data transmission
rate via low-
voltage network
max. 1.200 bit/sec
Data transmission
rate between the
microprocessor and
the DLC modem
4,800 bit/sec
RS485 communication interface
Protocol
IEC62056-46,
marking of registers in compliance
with OBIS (IEC62056-61)
Data transmission
rate
19200 bit/sec
GSM/GPRS communication interface
Protocol IEC62056-46,
Data transmission
rate
GSM: 9600 bit/sec
GPRS: 28000 bit/sec
Actual rate depends on network
configuration!
LOAD- PROFILE
No. of load-profiles 2
OUTPUTS
Control output -
high voltage
output
Hardware type: Bistable relay
Output type; Load control
Switching voltage: 250 V
Switching current: 6 A
Control output -
high voltage
output
Hardware type: Optomos
Output type; Service control
Switching voltage: 250 V
Switching current: 100 mA
Low voltage output
Hardware type: Transistor
Output type; switching device
control or impulse output
Switching voltage: 24 V
Switching current: 27 mA
INPUTS
Low voltage input
HW type: Passive transistor input
Input type: Alarm input (1 and 2)
Switching voltage: 3 – 24 V AC/DC
SWITCHING DEVICE
Switching device
Input type:; 3(4) x Bistable relay
Switching voltage: 3 x 440 V
Switching current: 3(4) x 100 A
METER RESISTANCE TO ELECTROMAGNETIC
DISTURBANCES
Insulation strength 4 kV, 50 Hz, 1 min
Electrostatic
discharges
15 kV (IEC 1000-4–2)
Electromagnetic
field
10 V/m (IEC 1000-4–3)
Burst test – high-
freq. disturbances
4 kV (IEC 1000–4–4)
Shock voltage
12 kV, 1,2/50 µ s (IEC 62053-21) –
to meter main circuit
DIMENSIONS
ME37y meter:
Mass
200 x 132 x 82 mm
approx. 800 g
MT371 meter
Mass
250 x 178 x 55 mm
approx. 1000 g